sparrowwallet/openpnp-capture
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base: sparrowwallet:master
Branches Tags
sparrowwallet:master
sparrowwallet:libjpeg-turbo-3.1.2
sparrowwallet:convert-yu12
sparrowwallet:update-min-cmake
sparrowwallet:macos-continuity-camera
sparrowwallet:nv12-converter
sparrowwallet:initialize-structures
sparrowwallet:remove-manual-dealloc
sparrowwallet:fix-memory-leak
sparrowwallet:fix-logging
sparrowwallet:v0.0.30-1
sparrowwallet:v0.0.28-9
sparrowwallet:v0.0.28-8
sparrowwallet:v0.0.28-7
sparrowwallet:v0.0.28-6
sparrowwallet:v0.0.28-5
sparrowwallet:v0.0.28-4
sparrowwallet:v0.0.28-3
sparrowwallet:v0.0.28-2
..
compare: sparrowwallet:initialize-structures
Branches Tags
sparrowwallet:libjpeg-turbo-3.1.2
sparrowwallet:convert-yu12
sparrowwallet:master
sparrowwallet:update-min-cmake
sparrowwallet:macos-continuity-camera
sparrowwallet:nv12-converter
sparrowwallet:initialize-structures
sparrowwallet:remove-manual-dealloc
sparrowwallet:fix-memory-leak
sparrowwallet:fix-logging
sparrowwallet:v0.0.30-1
sparrowwallet:v0.0.28-9
sparrowwallet:v0.0.28-8
sparrowwallet:v0.0.28-7
sparrowwallet:v0.0.28-6
sparrowwallet:v0.0.28-5
sparrowwallet:v0.0.28-4
sparrowwallet:v0.0.28-3
sparrowwallet:v0.0.28-2

No commits in common. "master" and "initialize-structures" have entirely different histories.
master ... initialize

881 changed files with 81680 additions and 143224 deletions
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88
.github/workflows/build.yml vendored
View File

@ -1,18 +1,18 @@
name: Build
on: workflow_dispatch
on:
push:
pull_request:
jobs:
macos_x86_64:
strategy:
matrix:
os: [macos-13]
os: [macos-latest]
arch: [x86_64]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout Repo
uses: actions/checkout@v5
uses: actions/checkout@v2
- name: Build
run: |
@ -26,22 +26,31 @@ jobs:
cp build/libopenpnp-capture.dylib deploy/libopenpnp-capture-${{ matrix.os }}-${{ matrix.arch }}.dylib
- name: Upload Artifacts
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v2
with:
name: openpnp-capture - ${{ runner.os }} ${{ runner.arch }}
path: |
deploy/*
- name: Create Release
if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
uses: ncipollo/release-action@v1
with:
artifacts: "deploy/*"
token: ${{ secrets.GITHUB_TOKEN }}
allowUpdates: true
macos_arm64:
strategy:
matrix:
os: [macos-14]
os: [macos-latest]
arch: [arm64]
runs-on: ${{ matrix.os }}
# Currently runs on Jason's Mac using a Github self hosted runner because
# Github doesn't yet support runners for Apple Silicon on macOS.
runs-on: [self-hosted, macOS, ARM64]
steps:
- name: Checkout Repo
uses: actions/checkout@v5
uses: actions/checkout@v2
- name: Build
run: |
@ -55,22 +64,29 @@ jobs:
cp build/libopenpnp-capture.dylib deploy/libopenpnp-capture-${{ matrix.os }}-${{ matrix.arch }}.dylib
- name: Upload Artifacts
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v2
with:
name: openpnp-capture - ${{ runner.os }} ${{ runner.arch }}
path: |
deploy/*
- name: Create Release
if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
uses: ncipollo/release-action@v1
with:
artifacts: "deploy/*"
token: ${{ secrets.GITHUB_TOKEN }}
allowUpdates: true
windows_x86_64:
strategy:
matrix:
os: [windows-2022]
os: [windows-latest]
arch: [x86_64]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout Repo
uses: actions/checkout@v5
uses: actions/checkout@v2
- name: Visual Studio shell
uses: egor-tensin/vs-shell@v2
@ -87,22 +103,31 @@ jobs:
cp build/Release/openpnp-capture.dll deploy/libopenpnp-capture-${{ matrix.os }}-${{ matrix.arch }}.dll
- name: Upload Artifacts
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v2
with:
name: openpnp-capture - ${{ runner.os }} ${{ runner.arch }}
path: |
deploy/*
- name: Create Release
if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
uses: ncipollo/release-action@v1
with:
artifacts: "deploy/*"
token: ${{ secrets.GITHUB_TOKEN }}
allowUpdates: true
linux_arm64:
strategy:
matrix:
os: [ubuntu-22.04-arm]
os: [ubuntu-20.04]
arch: [arm64]
runs-on: ${{ matrix.os }}
# Currently runs on Jason's Mac using a Github self hosted runner because
# Github doesn't yet support runners for Apple Silicon on macOS.
runs-on: [self-hosted, Linux, ARM64]
steps:
- name: Checkout Repo
uses: actions/checkout@v5
uses: actions/checkout@v2
- name: "Build"
run: |
@ -117,22 +142,29 @@ jobs:
cp build/libopenpnp-capture.so deploy/libopenpnp-capture-${{ matrix.os }}-${{ matrix.arch }}.so
- name: Upload Artifacts
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v2
with:
name: openpnp-capture - ${{ runner.os }} ${{ runner.arch }}
path: |
deploy/*
- name: Create Release
if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
uses: ncipollo/release-action@v1
with:
artifacts: "deploy/*"
token: ${{ secrets.GITHUB_TOKEN }}
allowUpdates: true
linux_x86_64:
strategy:
matrix:
os: [ubuntu-22.04]
os: [ubuntu-20.04]
arch: [x86_64]
runs-on: ${{ matrix.os }}
steps:
- name: Checkout Repo
uses: actions/checkout@v5
uses: actions/checkout@v2
- name: "Build"
run: |
@ -147,9 +179,15 @@ jobs:
cp build/libopenpnp-capture.so deploy/libopenpnp-capture-${{ matrix.os }}-${{ matrix.arch }}.so
- name: Upload Artifacts
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v2
with:
name: openpnp-capture - ${{ runner.os }} ${{ runner.arch }}
path: |
deploy/*
- name: Create Release
if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
uses: ncipollo/release-action@v1
with:
artifacts: "deploy/*"
token: ${{ secrets.GITHUB_TOKEN }}
allowUpdates: true

102
CMakeLists.txt
View File

@ -10,34 +10,17 @@
# Author: Niels A. Moseley, Jason von Nieda
#
cmake_minimum_required(VERSION 3.16)
cmake_minimum_required(VERSION 3.1)
project (openpnp-capture)
set(OPENPNP_CAPTURE_LIB_VERSION "0.0.30" CACHE STRING "openpnp-capture library version")
set(OPENPNP_CAPTURE_LIB_VERSION "0.0.28" CACHE STRING "openpnp-capture library version")
set(OPENPNP_CAPTURE_LIB_SOVERSION "0" CACHE STRING "openpnp-capture library soversion")
# Library type options
option(BUILD_SHARED_LIBS "Build shared library" ON)
option(BUILD_STATIC_LIBS "Build static library" OFF)
# Validate library type options
if(BUILD_STATIC_LIBS AND BUILD_SHARED_LIBS)
message(WARNING "Both BUILD_STATIC_LIBS and BUILD_SHARED_LIBS are enabled. Building static library only.")
set(BUILD_SHARED_LIBS OFF)
elseif(NOT BUILD_STATIC_LIBS AND NOT BUILD_SHARED_LIBS)
message(STATUS "Neither BUILD_STATIC_LIBS nor BUILD_SHARED_LIBS specified. Defaulting to shared library.")
set(BUILD_SHARED_LIBS ON)
endif()
# make sure the libjpegturbo is compiled with the
# position independent flag -fPIC
IF (UNIX)
set(POSITION_INDEPENDENT_CODE TRUE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
# Add O3 optimizations and native architecture for release builds
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -march=native")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -march=native")
ENDIF()
# make CMAKE search the current cmake dir inside the
@ -71,25 +54,16 @@ else(CMAKE_BUILD_TYPE MATCHES Release)
add_definitions(-D__BUILDTYPE__="debug")
endif(CMAKE_BUILD_TYPE MATCHES Release)
# add include directory
include_directories(include)
# create our capture library
if(BUILD_STATIC_LIBS AND NOT BUILD_SHARED_LIBS)
set(LIBRARY_TYPE STATIC)
add_definitions(-DOPENPNPCAPTURE_STATIC)
message(STATUS "Building static library")
else()
set(LIBRARY_TYPE SHARED)
message(STATUS "Building shared library")
endif()
add_library(openpnp-capture SHARED common/libmain.cpp
common/context.cpp
common/logging.cpp
common/stream.cpp)
add_library(openpnp-capture ${LIBRARY_TYPE} common/libmain.cpp
common/context.cpp
common/logging.cpp
common/stream.cpp)
target_include_directories(openpnp-capture PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>
)
# define common properties
set_target_properties(openpnp-capture PROPERTIES
VERSION ${OPENPNP_CAPTURE_LIB_VERSION}
@ -151,58 +125,30 @@ ELSEIF(UNIX)
linux/yuvconverters.cpp)
# force include directories for libjpeg-turbo
include_directories(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/linux/contrib/libjpeg-turbo-3.1.2")
include_directories(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/linux/contrib/libjpeg-turbo-dev")
# add pthreads library
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(openpnp-capture PRIVATE Threads::Threads)
target_link_libraries(openpnp-capture PUBLIC Threads::Threads)
# add turbojpeg library
find_package(PkgConfig REQUIRED)
pkg_search_module(TurboJPEG libturbojpeg)
if( TurboJPEG_FOUND )
target_link_directories(openpnp-capture PRIVATE ${TurboJPEG_LIBDIR})
target_include_directories(openpnp-capture PRIVATE ${TurboJPEG_INCLUDE_DIRS})
target_link_libraries(openpnp-capture PRIVATE ${TurboJPEG_LIBRARIES})
link_directories(${TurboJPEG_LIBDIR})
target_include_directories(openpnp-capture PUBLIC ${TurboJPEG_INCLUDE_DIRS})
target_link_libraries(openpnp-capture PUBLIC ${TurboJPEG_LIBRARIES})
else()
# compile libjpeg-turbo for MJPEG decoding support using ExternalProject
include(ExternalProject)
set(LIBJPEG_TURBO_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/libjpeg-turbo)
set(LIBJPEG_TURBO_INSTALL_DIR ${LIBJPEG_TURBO_PREFIX}/install)
ExternalProject_Add(libjpeg-turbo-external
SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/linux/contrib/libjpeg-turbo-3.1.2
CMAKE_ARGS
-DCMAKE_INSTALL_PREFIX=${LIBJPEG_TURBO_INSTALL_DIR}
-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-DENABLE_SHARED=OFF
-DWITH_SIMD=ON
-DWITH_TOOLS=OFF
-DWITH_JAVA=OFF
-DCMAKE_C_FLAGS=-fPIC
-DCMAKE_CXX_FLAGS=-fPIC
-DCMAKE_C_FLAGS_RELEASE=-O3
-DCMAKE_CXX_FLAGS_RELEASE=-O3
BUILD_BYPRODUCTS
${LIBJPEG_TURBO_INSTALL_DIR}/lib/libturbojpeg.a
)
# Create imported target for turbojpeg
add_library(turbojpeg-static STATIC IMPORTED)
set_target_properties(turbojpeg-static PROPERTIES
IMPORTED_LOCATION ${LIBJPEG_TURBO_INSTALL_DIR}/lib/libturbojpeg.a
)
# Set up include directories
target_include_directories(openpnp-capture PRIVATE ${LIBJPEG_TURBO_INSTALL_DIR}/include)
# Make openpnp-capture depend on the external project
add_dependencies(openpnp-capture libjpeg-turbo-external)
add_dependencies(turbojpeg-static libjpeg-turbo-external)
target_link_libraries(openpnp-capture PRIVATE turbojpeg-static)
# compile libjpeg-turbo for MJPEG decoding support
# right now, we need to disable SIMD because it
# causes a compile problem.. we need to fix this
# later...
set(ENABLE_SHARED OFF)
set(WITH_SIMD OFF)
set(TurboJPEG_LIBRARIES turbojpeg-static)
add_subdirectory(linux/contrib/libjpeg-turbo-dev)
target_link_libraries(openpnp-capture PRIVATE ${TurboJPEG_LIBRARIES})
endif()
# add linux-specific test application

3
QtCaptureTest/QtCaptureTest.pro
View File

@ -14,6 +14,9 @@ TEMPLATE = app
macx:CONFIG -= app_bundle
#CONFIG += console
# add the openpnp-capture include path
INCLUDEPATH += ../include
SOURCES += main.cpp\
mainwindow.cpp

2
README.md
View File

@ -44,7 +44,7 @@ Documentation for openpnp-capture needs improvement. We would love your [help!](
# Building OpenPnP Capture
## Dependencies
* CMAKE 3.16 or better
* CMAKE 3.1 or better
* MAKE (osx, linux)
* Visual Studio 2013 + NMake or Ninja Build (windows)
* NASM for building libjpeg-turbo (linux)

74
README_BUILD.md
View File

@ -1,74 +0,0 @@
# Building OpenPnP Capture Library
## Windows Build Options
The bootstrap.bat script now provides multiple build options for Windows:
### Using bootstrap.bat
Run `bootstrap.bat` and choose from the following options:
1. **Visual Studio with NMake (Shared Library - Release)** - Default shared library build
2. **Visual Studio with Ninja Build (Shared Library - Release)** - Shared library with Ninja
3. **Visual Studio with NMake (Static Library - Release)** - Static library, Release mode
4. **Visual Studio with NMake (Static Library - Debug)** - Static library, Debug mode
5. **Visual Studio with Ninja Build (Static Library - Release)** - Static library with Ninja, Release
6. **Visual Studio with Ninja Build (Static Library - Debug)** - Static library with Ninja, Debug
7. **Exit**
### Manual CMake Configuration
You can also configure the build manually using CMake options:
#### For Shared Library (default):
```bash
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -G "NMake Makefiles" ..
```
#### For Static Library:
```bash
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "NMake Makefiles" ..
```
#### For Debug Static Library:
```bash
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "NMake Makefiles" ..
```
## CMake Options
- `BUILD_SHARED_LIBS`: Build shared library (default: ON)
- `BUILD_STATIC_LIBS`: Build static library (default: OFF)
**Note**: If both options are enabled, the build will default to static library with a warning.
## Usage in Your Project
### When Using Static Library
When linking against the static library, make sure to define `OPENPNPCAPTURE_STATIC` in your project to ensure correct symbol linkage:
```cpp
#define OPENPNPCAPTURE_STATIC
#include "openpnp-capture.h"
```
Or add it as a compile definition in your CMakeLists.txt:
```cmake
target_compile_definitions(your_target PRIVATE OPENPNPCAPTURE_STATIC)
```
### When Using Shared Library
No special definitions are needed for shared library usage:
```cpp
#include "openpnp-capture.h"
```

46
bootstrap.bat
View File

@ -1,21 +1,13 @@
@ECHO OFF
ECHO Please choose build system:
ECHO 1. Visual Studio with NMake (Shared Library - Release)
ECHO 2. Visual Studio with Ninja Build (Shared Library - Release)
ECHO 3. Visual Studio with NMake (Static Library - Release)
ECHO 4. Visual Studio with NMake (Static Library - Debug)
ECHO 5. Visual Studio with Ninja Build (Static Library - Release)
ECHO 6. Visual Studio with Ninja Build (Static Library - Debug)
ECHO 7. Exit
ECHO 1. Visual Studio with NMake
ECHO 2. Visual Studio with Ninja Build
ECHO 3. Exit
ECHO .
CHOICE /C 1234567 /M "Enter your choice:"
CHOICE /C 123 /M "Enter your choice:"
IF ERRORLEVEL 7 GOTO End
IF ERRORLEVEL 6 GOTO NinjaStaticDebug
IF ERRORLEVEL 5 GOTO NinjaStaticRelease
IF ERRORLEVEL 4 GOTO VSStaticDebug
IF ERRORLEVEL 3 GOTO VSStaticRelease
IF ERRORLEVEL 3 GOTO End
IF ERRORLEVEL 2 GOTO NinjaBuild
IF ERRORLEVEL 1 GOTO VS
@ -33,32 +25,4 @@ cmake -DCMAKE_BUILD_TYPE=Release -G "Ninja" ..
cd ..
GOTO End
:VSStaticRelease
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "NMake Makefiles" ..
cd ..
GOTO End
:VSStaticDebug
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "NMake Makefiles" ..
cd ..
GOTO End
:NinjaStaticRelease
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "Ninja" ..
cd ..
GOTO End
:NinjaStaticDebug
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DBUILD_SHARED_LIBS=OFF -DBUILD_STATIC_LIBS=ON -G "Ninja" ..
cd ..
GOTO End
:End

13
common/context.cpp
View File

@ -166,7 +166,14 @@ int32_t Context::openStream(CapDeviceID id, CapFormatID formatID)
}
else
{
LOG(LOG_DEBUG, "FOURCC = %s\n", fourCCToString(s->getFOURCC()).c_str());
printf("[DBG ] FOURCC = ");
uint32_t fcc = s->getFOURCC();
for(uint32_t i=0; i<4; i++)
{
printf("%c", (fcc & 0xff));
fcc >>= 8;
}
printf("\n");
}
int32_t streamID = storeStream(s);
@ -198,9 +205,9 @@ uint32_t Context::isOpenStream(int32_t streamID)
return 0;
}
if (m_streams.find(streamID) == m_streams.cend())
if (static_cast<uint32_t>(streamID) >= m_streams.size())
{
LOG(LOG_ERR, "isOpenStream was called with an invalid stream ID\n");
LOG(LOG_ERR, "isOpenStream was called with an out-of-bounds stream ID\n");
return 0;
}

9
include/openpnp-capture.h
View File

@ -42,13 +42,8 @@
#define SO_IMPORT
#define SO_EXPORT
#elif defined(_MSC_VER)
#ifndef OPENPNPCAPTURE_STATIC
#define SO_IMPORT __declspec(dllimport)
#define SO_EXPORT __declspec(dllexport)
#else
#define SO_IMPORT
#define SO_EXPORT
#endif
#define SO_IMPORT __declspec(dllimport)
#define SO_EXPORT __declspec(dllexport)
#else
#error("Unknown compiler")
#endif

6
linux/contrib/README.md
View File

@ -1,5 +1,5 @@
The libjpeg-turbo source was downloaded from GITHUB:
The libjpeg-turbo-dev was downloaded from GITHUB:
https://github.com/libjpeg-turbo/libjpeg-turbo/
https://github.com/libjpeg-turbo/libjpeg-turbo/tree/dev
on 21-10-2025.
on 28-9-2017.

2119
linux/contrib/libjpeg-turbo-3.1.2/CMakeLists.txt
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2447
linux/contrib/libjpeg-turbo-3.1.2/ChangeLog.md
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37
linux/contrib/libjpeg-turbo-3.1.2/cmakescripts/GenerateWrappers.cmake
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@ -1,37 +0,0 @@
if(NOT DEFINED SOURCE_DIR)
message(FATAL_ERROR "SOURCE_DIR must be specified")
endif()
foreach(FILE jcapistd.c jccolor.c jcdiffct.c jclossls.c jcmainct.c jcprepct.c
jcsample.c jdapistd.c jdcolor.c jddiffct.c jdlossls.c jdmainct.c jdpostct.c
jdsample.c jutils.c rdppm.c wrppm.c)
foreach(BITS 8 12 16)
string(REGEX REPLACE "\\.c" "-${BITS}.c" WRAPPER_FILE ${FILE})
if(BITS EQUAL 8)
set(BITS_RANGE "2 to 8")
elseif(BITS EQUAL 12)
set(BITS_RANGE "9 to 12")
else()
set(BITS_RANGE "13 to 16")
endif()
configure_file(${SOURCE_DIR}/template.c ${SOURCE_DIR}/${WRAPPER_FILE})
endforeach()
endforeach()
foreach(FILE jccoefct.c jcdctmgr.c jdcoefct.c jddctmgr.c jdmerge.c jfdctfst.c
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c jquant2.c
rdcolmap.c wrgif.c)
foreach(BITS 8 12)
string(REGEX REPLACE "\\.c" "-${BITS}.c" WRAPPER_FILE ${FILE})
set(BITS_RANGE ${BITS})
configure_file(${SOURCE_DIR}/template.c ${SOURCE_DIR}/${WRAPPER_FILE})
endforeach()
endforeach()

13
linux/contrib/libjpeg-turbo-3.1.2/cmakescripts/PackageInfo.cmake
View File

@ -1,13 +0,0 @@
# This file is included from the top-level CMakeLists.txt. We just store it
# here to avoid cluttering up that file.
set(PKGNAME ${CMAKE_PROJECT_NAME} CACHE STRING
"Distribution package name (default: ${CMAKE_PROJECT_NAME})")
set(PKGVENDOR "The ${CMAKE_PROJECT_NAME} Project" CACHE STRING
"Vendor name to be included in distribution package descriptions (default: The ${CMAKE_PROJECT_NAME} Project)")
set(PKGURL "https://${CMAKE_PROJECT_NAME}.org" CACHE STRING
"URL of project web site to be included in distribution package descriptions (default: https://${CMAKE_PROJECT_NAME}.org)")
set(PKGEMAIL "information@${CMAKE_PROJECT_NAME}.org" CACHE STRING
"E-mail of project maintainer to be included in distribution package descriptions (default: information@${CMAKE_PROJECT_NAME}.org")
set(PKGID "com.${CMAKE_PROJECT_NAME}.${PKGNAME}" CACHE STRING
"Globally unique package identifier (reverse DNS notation) (default: com.${CMAKE_PROJECT_NAME}.${PKGNAME})")

71
linux/contrib/libjpeg-turbo-3.1.2/cmakescripts/tjbenchtest.cmake
View File

@ -1,71 +0,0 @@
if(NOT DEFINED PRECISION)
message(FATAL_ERROR "PRECISION must be specified")
endif()
if(NOT DEFINED WITH_JAVA)
message(FATAL_ERROR "WITH_JAVA must be specified")
endif()
macro(check_error program)
if(NOT RESULT EQUAL 0)
message(FATAL_ERROR "${program} failed.")
endif()
endmacro()
macro(run_test PROG ARGS)
string(REPLACE ";" " " SPACED_ARGS "${ARGS}")
message(STATUS "${PROG} ${SPACED_ARGS}")
execute_process(COMMAND ${CMAKE_CURRENT_BINARY_DIR}/test/${PROG} ${ARGS}
RESULT_VARIABLE RESULT)
check_error("${PROG} ${SPACED_ARGS}")
endmacro()
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-precision;${PRECISION}")
run_test(tjbenchtest "-precision;${PRECISION};-alloc")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-precision;${PRECISION};-yuv")
run_test(tjbenchtest "-precision;${PRECISION};-yuv;-alloc")
run_test(tjbenchtest "-precision;${PRECISION};-optimize")
run_test(tjbenchtest "-precision;${PRECISION};-optimize;-yuv")
endif()
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-precision;${PRECISION};-progressive")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-precision;${PRECISION};-progressive;-yuv")
endif()
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-precision;${PRECISION};-arithmetic")
run_test(tjbenchtest "-precision;${PRECISION};-progressive;-arithmetic")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-precision;${PRECISION};-arithmetic;-yuv")
endif()
run_test(tjbenchtest "-precision;${PRECISION};-lossless")
run_test(tjbenchtest "-precision;${PRECISION};-lossless;-alloc")
if(WITH_JAVA)
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-java;-precision;${PRECISION}")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-java;-precision;${PRECISION};-yuv")
run_test(tjbenchtest "-java;-precision;${PRECISION};-optimize")
run_test(tjbenchtest "-java;-precision;${PRECISION};-optimize;-yuv")
endif()
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive;-yuv")
endif()
if(PRECISION EQUAL 8 OR PRECISION EQUAL 12)
run_test(tjbenchtest "-java;-precision;${PRECISION};-arithmetic")
run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive;-arithmetic")
endif()
if(PRECISION EQUAL 8)
run_test(tjbenchtest "-java;-precision;${PRECISION};-arithmetic;-yuv")
endif()
run_test(tjbenchtest "-java;-precision;${PRECISION};-lossless")
endif()

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if(NOT DEFINED WITH_JAVA)
message(FATAL_ERROR "WITH_JAVA must be specified")
endif()
macro(check_error program)
if(NOT RESULT EQUAL 0)
message(FATAL_ERROR "${program} failed.")
endif()
endmacro()
macro(run_test PROG ARGS)
string(REPLACE ";" " " SPACED_ARGS "${ARGS}")
message(STATUS "${PROG} ${SPACED_ARGS}")
execute_process(COMMAND ${CMAKE_CURRENT_BINARY_DIR}/test/${PROG} ${ARGS}
RESULT_VARIABLE RESULT)
check_error("${PROG} ${SPACED_ARGS}")
endmacro()
run_test(tjcomptest "")
run_test(tjdecomptest "")
run_test(tjtrantest "")
if(WITH_JAVA)
run_test(tjcomptest "-java")
run_test(tjdecomptest "-java")
run_test(tjtrantest "-java")
endif()

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@ -1,301 +0,0 @@
.TH DJPEG 1 "17 June 2024"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
.B djpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B djpeg
decompresses the named JPEG file, or the standard input if no file is named,
and produces an image file on the standard output. PBMPLUS (PPM/PGM), BMP,
GIF, or Targa output format can be selected.
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-colors " N"
Reduce image to at most N colors [legacy feature]. This reduces the number of
colors used in the output image so that it can be stored in a colormapped file
format. This feature cannot be used when decompressing lossless JPEG images.
.TP
.BI \-quantize " N"
Same as
.BR \-colors .
.B \-colors
is the recommended name.
.B \-quantize
is provided only for backward compatibility.
.TP
.B \-fast
Select recommended processing options for low-quality output [legacy feature].
(The default options are chosen for highest-quality output.) Currently, this
is equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR. On
modern CPUs, these settings have little or no performance benefit and are
retained solely for backward compatibility.
.TP
.B \-grayscale
Force grayscale output even if JPEG file is full-color. This feature cannot be
used when decompressing full-color lossless JPEG images.
.TP
.B \-rgb
Force RGB output even if JPEG file is grayscale. This feature cannot be used
when decompressing grayscale lossless JPEG images.
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently the scale factor must be
M/8, where M is an integer between 1 and 16 inclusive, or any reduced fraction
thereof (such as 1/2, 3/4, etc.) Scaling is handy if the image is larger than
your screen. This feature cannot be used when decompressing lossless JPEG
images.
.TP
.B \-bmp
Select BMP output format (Windows flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
format is emitted. This format can only be used when decompressing
8-bit-per-sample JPEG images.
.TP
.B \-gif
Select GIF output format (LZW-compressed) [legacy feature]. Since GIF does not
support more than 256 colors,
.B \-colors 256
is assumed (unless you specify a smaller number of colors). If you specify
.BR \-fast,
the default number of colors is 216. This format can only be used when
decompressing 8-bit-per-sample or 12-bit-per-sample lossy JPEG images.
.TP
.B \-gif0
Select GIF output format (uncompressed) [legacy feature]. Since GIF does not
support more than 256 colors,
.B \-colors 256
is assumed (unless you specify a smaller number of colors). If you specify
.BR \-fast,
the default number of colors is 216. This format can only be used when
decompressing 8-bit-per-sample or 12-bit-per-sample lossy JPEG images.
.TP
.B \-os2
Select BMP output format (OS/2 1.x flavor) [legacy feature]. 8-bit colormapped
format is emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
format is emitted. This format can only be used when decompressing
8-bit-per-sample JPEG images.
.TP
.B \-pnm
Select PBMPLUS (PPM/PGM) output format (this is the default format).
PGM is emitted if the JPEG file is grayscale or if
.B \-grayscale
is specified; otherwise PPM is emitted.
.TP
.B \-targa
Select Targa output format [legacy feature]. Grayscale format is emitted if
the JPEG file is grayscale or if
.B \-grayscale
is specified; otherwise, colormapped format is emitted if
.B \-colors
is specified; otherwise, 24-bit full-color format is emitted. This format can
only be used when decompressing 8-bit-per-sample JPEG images.
.PP
Switches for advanced users:
.TP
.B \-dct int
Use accurate integer DCT method (default).
.TP
.B \-dct fast
Use less accurate integer DCT method [legacy feature].
When the Independent JPEG Group's software was first released in 1991, the
decompression time for a 1-megapixel JPEG image on a mainstream PC was measured
in minutes. Thus, the \fBfast\fR integer DCT algorithm provided noticeable
performance benefits. On modern CPUs running libjpeg-turbo, however, the
decompression time for a 1-megapixel JPEG image is measured in milliseconds,
and thus the performance benefits of the \fBfast\fR algorithm are much less
noticeable. On modern x86/x86-64 CPUs that support AVX2 instructions, the
\fBfast\fR and \fBint\fR methods have similar performance. On other types of
CPUs, the \fBfast\fR method is generally about 5-15% faster than the \fBint\fR
method.
If the JPEG image was compressed using a quality level of 85 or below, then
there should be little or no perceptible quality difference between the two
algorithms. When decompressing images that were compressed using quality
levels above 85, however, the difference between the \fBfast\fR and \fBint\fR
methods becomes more pronounced. With images compressed using quality=97, for
instance, the \fBfast\fR method incurs generally about a 4-6 dB loss in PSNR
relative to the \fBint\fR method, but this can be larger for some images. If
you can avoid it, do not use the \fBfast\fR method when decompressing images
that were compressed using quality levels above 97. The algorithm often
degenerates for such images and can actually produce a more lossy output image
than if the JPEG image had been compressed using lower quality levels.
.TP
.B \-dct float
Use floating-point DCT method [legacy feature].
The \fBfloat\fR method does not produce significantly more accurate results
than the \fBint\fR method, and it is much slower. The \fBfloat\fR method may
also give different results on different machines due to varying roundoff
behavior, whereas the integer methods should give the same results on all
machines.
.TP
.B \-dither fs
Use Floyd-Steinberg dithering when quantizing colors [legacy feature].
.TP
.B \-dither ordered
Use ordered dithering when quantizing colors [legacy feature].
.TP
.B \-dither none
Do not use dithering when quantizing colors [legacy feature]. By default,
Floyd-Steinberg dithering is applied when quantizing colors. This is slower
but usually produces the best results. Ordered dithering is a compromise
between speed and quality. No dithering is faster but usually looks awful.
Note that these switches have no effect unless color quantization is being
done. Ordered dithering is only available in
.B \-onepass
mode.
.TP
.BI \-icc " file"
Extract ICC color management profile to the specified file.
.TP
.BI \-map " file"
Quantize to the colors used in the specified image file [legacy feature]. This
is useful for producing multiple files with identical color maps, or for
forcing a predefined set of colors to be used. The
.I file
must be a GIF or PPM file. This option overrides
.B \-colors
and
.BR \-onepass .
.TP
.B \-nosmooth
Use a faster, lower-quality upsampling routine.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization [legacy feature]. The
one-pass method needs less memory, but it produces a lower-quality image.
.B \-onepass
is ignored unless you also specify
.B \-colors
.IR N .
Also, the one-pass method is always used for grayscale output. (The two-pass
method has no improvement in that case.)
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, an error will occur.
.TP
.BI \-maxscans " N"
Abort if the JPEG image contains more than
.I N
scans. This feature demonstrates a method by which applications can guard
against denial-of-service attacks instigated by specially-crafted malformed
JPEG images containing numerous scans with missing image data or image data
consisting only of "EOB runs" (a feature of progressive JPEG images that allows
potentially hundreds of thousands of adjoining zero-value pixels to be
represented using only a few bytes.) Attempting to decompress such malformed
JPEG images can cause excessive CPU activity, since the decompressor must fully
process each scan (even if the scan is corrupt) before it can proceed to the
next scan.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.BI \-memsrc
Load input file into memory before decompressing. This feature was implemented
mainly as a way of testing the in-memory source manager (jpeg_mem_src().)
.TP
.BI \-report
Report decompression progress.
.TP
.BI \-skip " Y0,Y1"
Decompress all rows of the JPEG image except those between Y0 and Y1
(inclusive.) Note that if decompression scaling is being used, then Y0 and Y1
are relative to the scaled image dimensions.
.TP
.BI \-crop " WxH+X+Y"
Decompress only a rectangular subregion of the image, starting at point X,Y
with width W and height H. If necessary, X will be shifted left to the nearest
iMCU boundary, and the width will be increased accordingly. Note that if
decompression scaling is being used, then X, Y, W, and H are relative to the
scaled image dimensions. Currently this option only works with the
PBMPLUS (PPM/PGM), GIF, and Targa output formats.
.TP
.BI \-strict
Treat all warnings as fatal. This feature also demonstrates a method by which
applications can guard against attacks instigated by specially-crafted
malformed JPEG images. Enabling this option will cause the decompressor to
abort if the JPEG image contains incomplete or corrupt image data.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.TP
.B \-version
Print version information and exit.
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg and saves the output in 8-bit
BMP format in foo.bmp:
.IP
.B djpeg \-bmp
.I foo.jpg
.B >
.I foo.bmp
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.PP
This file was modified by The libjpeg-turbo Project to include only information
relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
features not present in libjpeg.

7
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code {
color: #4665A2;
}
th.markdownTableHeadNone {
color: black;
}

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linux/contrib/libjpeg-turbo-3.1.2/doc/turbojpeg/dynsections.js
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/*
@licstart The following is the entire license notice for the JavaScript code in this file.
The MIT License (MIT)
Copyright (C) 1997-2020 by Dimitri van Heesch
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@licend The above is the entire license notice for the JavaScript code in this file
*/
function toggleVisibility(linkObj)
{
var base = $(linkObj).attr('id');
var summary = $('#'+base+'-summary');
var content = $('#'+base+'-content');
var trigger = $('#'+base+'-trigger');
var src=$(trigger).attr('src');
if (content.is(':visible')===true) {
content.hide();
summary.show();
$(linkObj).addClass('closed').removeClass('opened');
$(trigger).attr('src',src.substring(0,src.length-8)+'closed.png');
} else {
content.show();
summary.hide();
$(linkObj).removeClass('closed').addClass('opened');
$(trigger).attr('src',src.substring(0,src.length-10)+'open.png');
}
return false;
}
function updateStripes()
{
$('table.directory tr').
removeClass('even').filter(':visible:even').addClass('even');
$('table.directory tr').
removeClass('odd').filter(':visible:odd').addClass('odd');
}
function toggleLevel(level)
{
$('table.directory tr').each(function() {
var l = this.id.split('_').length-1;
var i = $('#img'+this.id.substring(3));
var a = $('#arr'+this.id.substring(3));
if (l<level+1) {
i.removeClass('iconfopen iconfclosed').addClass('iconfopen');
a.html('&#9660;');
$(this).show();
} else if (l==level+1) {
i.removeClass('iconfclosed iconfopen').addClass('iconfclosed');
a.html('&#9658;');
$(this).show();
} else {
$(this).hide();
}
});
updateStripes();
}
function toggleFolder(id)
{
// the clicked row
var currentRow = $('#row_'+id);
// all rows after the clicked row
var rows = currentRow.nextAll("tr");
var re = new RegExp('^row_'+id+'\\d+_$', "i"); //only one sub
// only match elements AFTER this one (can't hide elements before)
var childRows = rows.filter(function() { return this.id.match(re); });
// first row is visible we are HIDING
if (childRows.filter(':first').is(':visible')===true) {
// replace down arrow by right arrow for current row
var currentRowSpans = currentRow.find("span");
currentRowSpans.filter(".iconfopen").removeClass("iconfopen").addClass("iconfclosed");
currentRowSpans.filter(".arrow").html('&#9658;');
rows.filter("[id^=row_"+id+"]").hide(); // hide all children
} else { // we are SHOWING
// replace right arrow by down arrow for current row
var currentRowSpans = currentRow.find("span");
currentRowSpans.filter(".iconfclosed").removeClass("iconfclosed").addClass("iconfopen");
currentRowSpans.filter(".arrow").html('&#9660;');
// replace down arrows by right arrows for child rows
var childRowsSpans = childRows.find("span");
childRowsSpans.filter(".iconfopen").removeClass("iconfopen").addClass("iconfclosed");
childRowsSpans.filter(".arrow").html('&#9658;');
childRows.show(); //show all children
}
updateStripes();
}
function toggleInherit(id)
{
var rows = $('tr.inherit.'+id);
var img = $('tr.inherit_header.'+id+' img');
var src = $(img).attr('src');
if (rows.filter(':first').is(':visible')===true) {
rows.css('display','none');
$(img).attr('src',src.substring(0,src.length-8)+'closed.png');
} else {
rows.css('display','table-row'); // using show() causes jump in firefox
$(img).attr('src',src.substring(0,src.length-10)+'open.png');
}
}
var opened=true;
// in case HTML_COLORSTYLE is LIGHT or DARK the vars will be replaced, so we write them out explicitly and use double quotes
var plusImg = [ "var(--fold-plus-image)", "var(--fold-plus-image-relpath)" ];
var minusImg = [ "var(--fold-minus-image)", "var(--fold-minus-image-relpath)" ];
// toggle all folding blocks
function codefold_toggle_all(relPath) {
if (opened) {
$('#fold_all').css('background-image',plusImg[relPath]);
$('div[id^=foldopen]').hide();
$('div[id^=foldclosed]').show();
} else {
$('#fold_all').css('background-image',minusImg[relPath]);
$('div[id^=foldopen]').show();
$('div[id^=foldclosed]').hide();
}
opened=!opened;
}
// toggle single folding block
function codefold_toggle(id) {
$('#foldopen'+id).toggle();
$('#foldclosed'+id).toggle();
}
function init_codefold(relPath) {
$('span[class=lineno]').css(
{'padding-right':'4px',
'margin-right':'2px',
'display':'inline-block',
'width':'54px',
'background':'linear-gradient(var(--fold-line-color),var(--fold-line-color)) no-repeat 46px/2px 100%'
});
// add global toggle to first line
$('span[class=lineno]:first').append('<span class="fold" id="fold_all" '+
'onclick="javascript:codefold_toggle_all('+relPath+');" '+
'style="background-image:'+minusImg[relPath]+';"></span>');
// add vertical lines to other rows
$('span[class=lineno]').not(':eq(0)').append('<span class="fold"></span>');
// add toggle controls to lines with fold divs
$('div[class=foldopen]').each(function() {
// extract specific id to use
var id = $(this).attr('id').replace('foldopen','');
// extract start and end foldable fragment attributes
var start = $(this).attr('data-start');
var end = $(this).attr('data-end');
// replace normal fold span with controls for the first line of a foldable fragment
$(this).find('span[class=fold]:first').replaceWith('<span class="fold" '+
'onclick="javascript:codefold_toggle(\''+id+'\');" '+
'style="background-image:'+minusImg[relPath]+';"></span>');
// append div for folded (closed) representation
$(this).after('<div id="foldclosed'+id+'" class="foldclosed" style="display:none;"></div>');
// extract the first line from the "open" section to represent closed content
var line = $(this).children().first().clone();
// remove any glow that might still be active on the original line
$(line).removeClass('glow');
if (start) {
// if line already ends with a start marker (e.g. trailing {), remove it
$(line).html($(line).html().replace(new RegExp('\\s*'+start+'\\s*$','g'),''));
}
// replace minus with plus symbol
$(line).find('span[class=fold]').css('background-image',plusImg[relPath]);
// append ellipsis
$(line).append(' '+start+'<a href="javascript:codefold_toggle(\''+id+'\')">&#8230;</a>'+end);
// insert constructed line into closed div
$('#foldclosed'+id).html(line);
});
}
/* @license-end */

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<div class="headertitle"><div class="title">tjregion Struct Reference<div class="ingroups"><a class="el" href="group___turbo_j_p_e_g.html">TurboJPEG</a></div></div></div>
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<p>Cropping region.
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<p><code>#include &lt;turbojpeg.h&gt;</code></p>
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Data Fields</h2></td></tr>
<tr class="memitem:a4b6a37a93997091b26a75831fa291ad9" id="r_a4b6a37a93997091b26a75831fa291ad9"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#a4b6a37a93997091b26a75831fa291ad9">x</a></td></tr>
<tr class="memdesc:a4b6a37a93997091b26a75831fa291ad9"><td class="mdescLeft">&#160;</td><td class="mdescRight">The left boundary of the cropping region. <br /></td></tr>
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<tr class="memitem:a7b3e0c24cfe87acc80e334cafdcf22c2" id="r_a7b3e0c24cfe87acc80e334cafdcf22c2"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#a7b3e0c24cfe87acc80e334cafdcf22c2">y</a></td></tr>
<tr class="memdesc:a7b3e0c24cfe87acc80e334cafdcf22c2"><td class="mdescLeft">&#160;</td><td class="mdescRight">The upper boundary of the cropping region. <br /></td></tr>
<tr class="separator:a7b3e0c24cfe87acc80e334cafdcf22c2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab6eb73ceef584fc23c8c8097926dce42" id="r_ab6eb73ceef584fc23c8c8097926dce42"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#ab6eb73ceef584fc23c8c8097926dce42">w</a></td></tr>
<tr class="memdesc:ab6eb73ceef584fc23c8c8097926dce42"><td class="mdescLeft">&#160;</td><td class="mdescRight">The width of the cropping region. <br /></td></tr>
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<tr class="memitem:aecefc45a26f4d8b60dd4d825c1710115" id="r_aecefc45a26f4d8b60dd4d825c1710115"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjregion.html#aecefc45a26f4d8b60dd4d825c1710115">h</a></td></tr>
<tr class="memdesc:aecefc45a26f4d8b60dd4d825c1710115"><td class="mdescLeft">&#160;</td><td class="mdescRight">The height of the cropping region. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Cropping region. </p>
</div><h2 class="groupheader">Field Documentation</h2>
<a id="aecefc45a26f4d8b60dd4d825c1710115" name="aecefc45a26f4d8b60dd4d825c1710115"></a>
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<p>The height of the cropping region. </p>
<p>Setting this to 0 is the equivalent of setting it to the height of the source JPEG image - y. </p>
</div>
</div>
<a id="ab6eb73ceef584fc23c8c8097926dce42" name="ab6eb73ceef584fc23c8c8097926dce42"></a>
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<p>The width of the cropping region. </p>
<p>Setting this to 0 is the equivalent of setting it to the width of the source JPEG image - x. </p>
</div>
</div>
<a id="a4b6a37a93997091b26a75831fa291ad9" name="a4b6a37a93997091b26a75831fa291ad9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4b6a37a93997091b26a75831fa291ad9">&#9670;&#160;</a></span>x</h2>
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<p>The left boundary of the cropping region. </p>
<p>For lossless transformation, this must be evenly divisible by the iMCU width (see <a class="el" href="group___turbo_j_p_e_g.html#ga9e61e7cd47a15a173283ba94e781308c" title="iMCU width (in pixels) for a given level of chrominance subsampling">tjMCUWidth</a>) of the destination image. For decompression, this must be evenly divisible by the scaled iMCU width of the source image. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7b3e0c24cfe87acc80e334cafdcf22c2">&#9670;&#160;</a></span>y</h2>
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<p>The upper boundary of the cropping region. </p>
<p>For lossless transformation, this must be evenly divisible by the iMCU height (see <a class="el" href="group___turbo_j_p_e_g.html#gabd247bb9fecb393eca57366feb8327bf" title="iMCU height (in pixels) for a given level of chrominance subsampling">tjMCUHeight</a>) of the destination image. </p>
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<p>Scaling factor.
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<p><code>#include &lt;turbojpeg.h&gt;</code></p>
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<tr class="memdesc:a9b011e57f981ee23083e2c1aa5e640ec"><td class="mdescLeft">&#160;</td><td class="mdescRight">Numerator. <br /></td></tr>
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<tr class="memitem:aefbcdf3e9e62274b2d312c695f133ce3" id="r_aefbcdf3e9e62274b2d312c695f133ce3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3">denom</a></td></tr>
<tr class="memdesc:aefbcdf3e9e62274b2d312c695f133ce3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Denominator. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Scaling factor. </p>
</div><h2 class="groupheader">Field Documentation</h2>
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<p>Denominator. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9b011e57f981ee23083e2c1aa5e640ec">&#9670;&#160;</a></span>num</h2>
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<p>Numerator. </p>
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<p>Lossless transform.
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<p><code>#include &lt;turbojpeg.h&gt;</code></p>
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<tr class="memitem:ac324e5e442abec8a961e5bf219db12cf" id="r_ac324e5e442abec8a961e5bf219db12cf"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structtjregion.html">tjregion</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#ac324e5e442abec8a961e5bf219db12cf">r</a></td></tr>
<tr class="memdesc:ac324e5e442abec8a961e5bf219db12cf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Cropping region. <br /></td></tr>
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<tr class="memitem:a2525aab4ba6978a1c273f74fef50e498" id="r_a2525aab4ba6978a1c273f74fef50e498"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#a2525aab4ba6978a1c273f74fef50e498">op</a></td></tr>
<tr class="memdesc:a2525aab4ba6978a1c273f74fef50e498"><td class="mdescLeft">&#160;</td><td class="mdescRight">One of the <a class="el" href="group___turbo_j_p_e_g.html#ga2de531af4e7e6c4f124908376b354866">transform operations</a>. <br /></td></tr>
<tr class="separator:a2525aab4ba6978a1c273f74fef50e498"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac0e74655baa4402209a21e1ae481c8f6" id="r_ac0e74655baa4402209a21e1ae481c8f6"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#ac0e74655baa4402209a21e1ae481c8f6">options</a></td></tr>
<tr class="memdesc:ac0e74655baa4402209a21e1ae481c8f6"><td class="mdescLeft">&#160;</td><td class="mdescRight">The bitwise OR of one of more of the <a class="el" href="group___turbo_j_p_e_g.html#gaecaaa3b7e2af812592c015d83207f010">transform options</a>. <br /></td></tr>
<tr class="separator:ac0e74655baa4402209a21e1ae481c8f6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a688fe8f1a8ecc12a538d9e561cf338e3" id="r_a688fe8f1a8ecc12a538d9e561cf338e3"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#a688fe8f1a8ecc12a538d9e561cf338e3">data</a></td></tr>
<tr class="memdesc:a688fe8f1a8ecc12a538d9e561cf338e3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Arbitrary data that can be accessed within the body of the callback function. <br /></td></tr>
<tr class="separator:a688fe8f1a8ecc12a538d9e561cf338e3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0dc7697d59a7abe48afc629e96cbc1d2" id="r_a0dc7697d59a7abe48afc629e96cbc1d2"><td class="memItemLeft" align="right" valign="top">int(*&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structtjtransform.html#a0dc7697d59a7abe48afc629e96cbc1d2">customFilter</a> )(short *coeffs, <a class="el" href="structtjregion.html">tjregion</a> arrayRegion, <a class="el" href="structtjregion.html">tjregion</a> planeRegion, int componentID, int transformID, struct <a class="el" href="structtjtransform.html">tjtransform</a> *transform)</td></tr>
<tr class="memdesc:a0dc7697d59a7abe48afc629e96cbc1d2"><td class="mdescLeft">&#160;</td><td class="mdescRight">A callback function that can be used to modify the DCT coefficients after they are losslessly transformed but before they are transcoded to a new JPEG image. <br /></td></tr>
<tr class="separator:a0dc7697d59a7abe48afc629e96cbc1d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Lossless transform. </p>
</div><h2 class="groupheader">Field Documentation</h2>
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<td class="memname">int(* tjtransform::customFilter) (short *coeffs, <a class="el" href="structtjregion.html">tjregion</a> arrayRegion, <a class="el" href="structtjregion.html">tjregion</a> planeRegion, int componentID, int transformID, struct <a class="el" href="structtjtransform.html">tjtransform</a> *transform)</td>
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<p>A callback function that can be used to modify the DCT coefficients after they are losslessly transformed but before they are transcoded to a new JPEG image. </p>
<p>This allows for custom filters or other transformations to be applied in the frequency domain.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">coeffs</td><td>pointer to an array of transformed DCT coefficients. (NOTE: This pointer is not guaranteed to be valid once the callback returns, so applications wishing to hand off the DCT coefficients to another function or library should make a copy of them within the body of the callback.)</td></tr>
<tr><td class="paramname">arrayRegion</td><td><a class="el" href="structtjregion.html" title="Cropping region.">tjregion</a> structure containing the width and height of the array pointed to by <code>coeffs</code> as well as its offset relative to the component plane. TurboJPEG implementations may choose to split each component plane into multiple DCT coefficient arrays and call the callback function once for each array.</td></tr>
<tr><td class="paramname">planeRegion</td><td><a class="el" href="structtjregion.html" title="Cropping region.">tjregion</a> structure containing the width and height of the component plane to which <code>coeffs</code> belongs</td></tr>
<tr><td class="paramname">componentID</td><td>ID number of the component plane to which <code>coeffs</code> belongs. (Y, Cb, and Cr have, respectively, ID's of 0, 1, and 2 in typical JPEG images.)</td></tr>
<tr><td class="paramname">transformID</td><td>ID number of the transformed image to which <code>coeffs</code> belongs. This is the same as the index of the transform in the <code>transforms</code> array that was passed to <a class="el" href="group___turbo_j_p_e_g.html#gaff23ba1dcabed456794b844791613920" title="Losslessly transform a JPEG image into another JPEG image.">tj3Transform()</a>.</td></tr>
<tr><td class="paramname">transform</td><td>a pointer to a <a class="el" href="structtjtransform.html" title="Lossless transform.">tjtransform</a> structure that specifies the parameters and/or cropping region for this transform</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if the callback was successful, or -1 if an error occurred. </dd></dl>
</div>
</div>
<a id="a688fe8f1a8ecc12a538d9e561cf338e3" name="a688fe8f1a8ecc12a538d9e561cf338e3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a688fe8f1a8ecc12a538d9e561cf338e3">&#9670;&#160;</a></span>data</h2>
<div class="memitem">
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<tr>
<td class="memname">void* tjtransform::data</td>
</tr>
</table>
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<p>Arbitrary data that can be accessed within the body of the callback function. </p>
</div>
</div>
<a id="a2525aab4ba6978a1c273f74fef50e498" name="a2525aab4ba6978a1c273f74fef50e498"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2525aab4ba6978a1c273f74fef50e498">&#9670;&#160;</a></span>op</h2>
<div class="memitem">
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<table class="memname">
<tr>
<td class="memname">int tjtransform::op</td>
</tr>
</table>
</div><div class="memdoc">
<p>One of the <a class="el" href="group___turbo_j_p_e_g.html#ga2de531af4e7e6c4f124908376b354866">transform operations</a>. </p>
</div>
</div>
<a id="ac0e74655baa4402209a21e1ae481c8f6" name="ac0e74655baa4402209a21e1ae481c8f6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac0e74655baa4402209a21e1ae481c8f6">&#9670;&#160;</a></span>options</h2>
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<tr>
<td class="memname">int tjtransform::options</td>
</tr>
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<p>The bitwise OR of one of more of the <a class="el" href="group___turbo_j_p_e_g.html#gaecaaa3b7e2af812592c015d83207f010">transform options</a>. </p>
</div>
</div>
<a id="ac324e5e442abec8a961e5bf219db12cf" name="ac324e5e442abec8a961e5bf219db12cf"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac324e5e442abec8a961e5bf219db12cf">&#9670;&#160;</a></span>r</h2>
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<tr>
<td class="memname"><a class="el" href="structtjregion.html">tjregion</a> tjtransform::r</td>
</tr>
</table>
</div><div class="memdoc">
<p>Cropping region. </p>
</div>
</div>
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<li><b>turbojpeg.h</b></li>
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This file was part of the Independent JPEG Group's software:
Copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
libjpeg-turbo Modifications:
Copyright (C) 2010, 2012, 2014-2017, 2020-2024, D. R. Commander.
For conditions of distribution and use, see the accompanying README.ijg file.
USAGE instructions for the Independent JPEG Group's JPEG software
=================================================================
This file describes usage of the JPEG conversion programs cjpeg and djpeg,
as well as the utility programs jpegtran, rdjpgcom and wrjpgcom. (See
the other documentation files if you wish to use the JPEG library within
your own programs.)
If you are on a Unix machine you may prefer to read the Unix-style manual
pages in files cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1.
INTRODUCTION
These programs implement JPEG image encoding, decoding, and transcoding.
JPEG (pronounced "jay-peg") is a standardized compression method for
full-color and grayscale images.
GENERAL USAGE
We provide two programs, cjpeg to compress an image file into JPEG format,
and djpeg to decompress a JPEG file back into a conventional image format.
On most systems, you say:
cjpeg [switches] [imagefile] >jpegfile
or
djpeg [switches] [jpegfile] >imagefile
The programs read the specified input file, or standard input if none is
named. They always write to standard output (with trace/error messages to
standard error). These conventions are handy for piping images between
programs.
If you defined TWO_FILE_COMMANDLINE when compiling the programs, you can
instead say:
cjpeg [switches] imagefile jpegfile
or
djpeg [switches] jpegfile imagefile
i.e., both the input and output files are named on the command line. This
style is a little more foolproof, and it loses no functionality if you don't
have pipes.
You can also say:
cjpeg [switches] -outfile jpegfile imagefile
or
djpeg [switches] -outfile imagefile jpegfile
This syntax works on all systems, so it is useful for scripts.
The currently supported image file formats are: PPM (PBMPLUS color format),
PGM (PBMPLUS grayscale format), BMP, GIF [legacy feature], and Targa [legacy
feature]. cjpeg recognizes the input image format automatically, with the
exception of some Targa files. You have to tell djpeg which format to
generate.
JPEG files are in the defacto standard JFIF file format. There are other,
less widely used JPEG-based file formats, but we don't support them.
All switch names may be abbreviated; for example, -grayscale may be written
-gray or -gr. Most of the "basic" switches can be abbreviated to as little as
one letter. Upper and lower case are equivalent (-BMP is the same as -bmp).
British spellings are also accepted (e.g., -greyscale), though for brevity
these are not mentioned below.
CJPEG DETAILS
The basic command line switches for cjpeg are:
-quality N[,...] Scale quantization tables to adjust image quality.
Quality is 0 (worst) to 100 (best); default is 75.
(See below for more info.)
-grayscale Create monochrome JPEG file from color input. By
specifying -grayscale, you'll get a smaller JPEG file
that takes less time to process.
-rgb Create RGB JPEG file. Using this switch suppresses the
conversion from RGB colorspace input to the default
YCbCr JPEG colorspace.
-optimize Perform optimization of entropy encoding parameters.
Without this, default encoding parameters are used.
-optimize usually makes the JPEG file a little smaller,
but cjpeg runs somewhat slower and needs much more
memory. Image quality and speed of decompression are
unaffected by -optimize.
-progressive Create progressive JPEG file (see below). Implies
-optimize unless -arithmetic is also specified.
-targa Input file is Targa format [legacy feature]. Targa
files that contain an "identification" field will not
be automatically recognized by cjpeg. For such files,
you must specify -targa to make cjpeg treat the input
as Targa format. For most Targa files, you won't need
this switch.
The -quality switch lets you trade off compressed file size against quality of
the reconstructed image: the higher the quality setting, the larger the JPEG
file, and the closer the output image will be to the original input. Normally
you want to use the lowest quality setting (smallest file) that decompresses
into something visually indistinguishable from the original image. For this
purpose the quality setting should generally be between 50 and 95 (the default
is 75) for photographic images. If you see defects at -quality 75, then go up
5 or 10 counts at a time until you are happy with the output image. (The
optimal setting will vary from one image to another.)
-quality 100 will generate a quantization table of all 1's, minimizing loss
in the quantization step (but there is still information loss in subsampling,
as well as roundoff error.) For most images, specifying a quality value above
about 95 will increase the size of the compressed file dramatically, and while
the quality gain from these higher quality values is measurable (using metrics
such as PSNR or SSIM), it is rarely perceivable by human vision.
In the other direction, quality values below 50 will produce very small files
of low image quality. Settings around 5 to 10 might be useful in preparing an
index of a large image library, for example. Try -quality 2 (or so) for some
amusing Cubist effects. (Note: quality values below about 25 generate 2-byte
quantization tables, which are considered optional in the JPEG standard.
cjpeg emits a warning message when you give such a quality value, because some
other JPEG programs may be unable to decode the resulting file. Use -baseline
if you need to ensure compatibility at low quality values.)
The -quality option has been extended in this version of cjpeg to support
separate quality settings for luminance and chrominance (or, in general,
separate settings for every quantization table slot.) The principle is the
same as chrominance subsampling: since the human eye is more sensitive to
spatial changes in brightness than spatial changes in color, the chrominance
components can be quantized more than the luminance components without
incurring any visible image quality loss. However, unlike subsampling, this
feature reduces data in the frequency domain instead of the spatial domain,
which allows for more fine-grained control. This option is useful in
quality-sensitive applications, for which the artifacts generated by
subsampling may be unacceptable.
The -quality option accepts a comma-separated list of parameters, which
respectively refer to the quality levels that should be assigned to the
quantization table slots. If there are more q-table slots than parameters,
then the last parameter is replicated. Thus, if only one quality parameter is
given, this is used for both luminance and chrominance (slots 0 and 1,
respectively), preserving the legacy behavior of cjpeg v6b and prior. More (or
customized) quantization tables can be set with the -qtables option and
assigned to components with the -qslots option (see the "wizard" switches
below.)
JPEG files generated with separate luminance and chrominance quality are fully
compliant with standard JPEG decoders.
CAUTION: For this setting to be useful, be sure to pass an argument of
-sample 1x1 to cjpeg to disable chrominance subsampling. Otherwise, the
default subsampling level (2x2, AKA "4:2:0") will be used.
The -progressive switch creates a "progressive JPEG" file. In this type of
JPEG file, the data is stored in multiple scans of increasing quality. If the
file is being transmitted over a slow communications link, the decoder can use
the first scan to display a low-quality image very quickly, and can then
improve the display with each subsequent scan. The final image is exactly
equivalent to a standard JPEG file of the same quality setting, and the total
file size is about the same --- often a little smaller.
Switches for advanced users:
-precision N Create JPEG file with N-bit data precision.
N is 2 to 16; default is 8. If N is not 8 or 12, then
-lossless must also be specified. Note that only the
PBMPLUS input file format supports data precisions other
than 8. Note also that PBMPLUS input files are silently
scaled to the target data precision, even if it is lower
than the precision of the input file. Passing an
argument of -verbose to cjpeg will cause it to print
information about the precision of the input file.
CAUTION: only 8-bit data precision is widely
implemented, so many decoders will be unable to handle
JPEG files with other data precisions.
"-precision 12" implies -optimize unless -arithmetic is
also specified.
-lossless psv[,Pt] Create a lossless JPEG file using the specified
predictor selection value (1 - 7) and optional point
transform (0 - {precision}-1, where {precision} is the
JPEG data precision in bits). A point transform value
of 0 (the default) is necessary in order to create a
fully lossless JPEG file. (A non-zero point transform
value right-shifts the input samples by the specified
number of bits, which is effectively a form of lossy
color quantization.) CAUTION: lossless JPEG is not yet
widely implemented, so many decoders will be unable to
handle a lossless JPEG file at all. In most cases,
compressing and decompressing a lossless JPEG file is
considerably slower than compressing and decompressing
a lossy JPEG file, and lossless JPEG files are much
larger than lossy JPEG files. Also note that the
following features will be unavailable when compressing
or decompressing a lossless JPEG file:
* Quality/quantization table selection
* Color space conversion (the JPEG image will use the
same color space as the input image)
* Color quantization
* DCT/IDCT algorithm selection
* Smoothing
* Downsampling/upsampling
* IDCT scaling
* Partial image decompression
* Transformations using jpegtran
Any switches used to enable or configure those features
will be ignored.
-arithmetic Use arithmetic coding. CAUTION: arithmetic-coded JPEG
is not yet widely implemented, so many decoders will
be unable to handle an arithmetic-coded JPEG file at
all.
-dct int Use accurate integer DCT method (default).
-dct fast Use less accurate integer DCT method [legacy feature].
When the Independent JPEG Group's software was first
released in 1991, the compression time for a
1-megapixel JPEG image on a mainstream PC was measured
in minutes. Thus, the fast integer DCT algorithm
provided noticeable performance benefits. On modern
CPUs running libjpeg-turbo, however, the compression
time for a 1-megapixel JPEG image is measured in
milliseconds, and thus the performance benefits of the
fast algorithm are much less noticeable. On modern
x86/x86-64 CPUs that support AVX2 instructions, the
fast and int methods have similar performance. On
other types of CPUs, the fast method is generally about
5-15% faster than the int method.
For quality levels of 90 and below, there should be
little or no perceptible quality difference between the
two algorithms. For quality levels above 90, however,
the difference between the fast and int methods becomes
more pronounced. With quality=97, for instance, the
fast method incurs generally about a 1-3 dB loss in
PSNR relative to the int method, but this can be larger
for some images. Do not use the fast method with
quality levels above 97. The algorithm often
degenerates at quality=98 and above and can actually
produce a more lossy image than if lower quality levels
had been used. Also, in libjpeg-turbo, the fast method
is not fully accelerated for quality levels above 97,
so it will be slower than the int method.
-dct float Use floating-point DCT method [legacy feature].
The float method does not produce significantly more
accurate results than the int method, and it is much
slower. The float method may also give different
results on different machines due to varying roundoff
behavior, whereas the integer methods should give the
same results on all machines.
-icc FILE Embed ICC color management profile contained in the
specified file.
-restart N Emit a JPEG restart marker every N MCU rows, or every N
MCUs if "B" is attached to the number.
In typical JPEG images, an MCU (Minimum Coded Unit) is
the minimum set of interleaved "data units" (8x8 DCT
blocks if the image is lossy or samples if the image is
lossless) necessary to represent at least one data unit
per component. (For example, an MCU in an interleaved
lossy JPEG image that uses 4:2:2 subsampling consists
of two luminance blocks followed by one block for each
chrominance component.) In single-component or
non-interleaved JPEG images, an MCU is the same as a
data unit. An MCU row is a row of MCUs spanning the
entire width of the image.
-restart 0 (the default) means no restart markers.
-smooth N Smooth the input image to eliminate dithering noise.
N, ranging from 1 to 100, indicates the strength of
smoothing. 0 (the default) means no smoothing.
-maxmemory N Set limit for amount of memory to use in processing
large images. Value is in thousands of bytes, or
millions of bytes if "M" is attached to the number.
For example, -max 4m selects 4000000 bytes. If more
space is needed, an error will occur.
-memdst Compress to memory instead of a file. This feature was
implemented mainly as a way of testing the in-memory
destination manager (jpeg_mem_dest()), but it is also
useful for benchmarking, since it reduces the I/O
overhead.
-report Report compression progress.
-strict Treat all warnings as fatal. Enabling this option will
cause the compressor to abort if an LZW-compressed GIF
input image contains incomplete or corrupt image data.
-verbose Enable debug printout. More -v's give more output.
or -debug Also, version information is printed at startup.
-version Print version information and exit.
The -restart option inserts extra markers that allow a JPEG decoder to
resynchronize after a transmission error. Without restart markers, any damage
to a compressed file will usually ruin the image from the point of the error
to the end of the image; with restart markers, the damage is usually confined
to the portion of the image up to the next restart marker. Of course, the
restart markers occupy extra space. We recommend -restart 1 for images that
will be transmitted across unreliable networks such as Usenet.
The -smooth option filters the input to eliminate fine-scale noise. This is
often useful when converting dithered images to JPEG: a moderate smoothing
factor of 10 to 50 gets rid of dithering patterns in the input file, resulting
in a smaller JPEG file and a better-looking image. Too large a smoothing
factor will visibly blur the image, however.
Switches for wizards:
-baseline Force baseline-compatible quantization tables to be
generated. This clamps quantization values to 8 bits
even at low quality settings. (This switch is poorly
named, since it does not ensure that the output is
actually baseline JPEG. For example, you can use
-baseline and -progressive together.)
-qtables file Use the quantization tables given in the specified
text file.
-qslots N[,...] Select which quantization table to use for each color
component.
-sample HxV[,...] Set JPEG sampling factors for each color component.
-scans file Use the scan script given in the specified text file.
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, DON'T USE THEM. These switches are documented
further in the file wizard.txt.
DJPEG DETAILS
The basic command line switches for djpeg are:
-colors N Reduce image to at most N colors [legacy feature].
or -quantize N This reduces the number of colors used in the output
image so that it can be stored in a colormapped file
format. This feature cannot be used when decompressing
lossless JPEG images. (-colors is the recommended
name. -quantize is provided only for backward
compatibility.)
-fast Select recommended processing options for low-quality
output [legacy feature]. (The default options are
chosen for highest-quality output.) Currently, this is
equivalent to "-dct fast -nosmooth -onepass -dither
ordered". On modern CPUs, these settings have little
or no performance benefit and are retained solely for
backward compatibility.
-grayscale Force grayscale output even if JPEG file is full-color.
This feature cannot be used when decompressing
full-color lossless JPEG images.
-rgb Force RGB output even if JPEG file is grayscale. This
feature cannot be used when decompressing grayscale
lossless JPEG images.
-scale M/N Scale the output image by a factor M/N. Currently the
scale factor must be M/8, where M is an integer between
1 and 16 inclusive, or any reduced fraction thereof
(such as 1/2, 3/4, etc.) Scaling is handy if the image
is larger than your screen. This feature cannot be
used when decompressing lossless JPEG images.
-bmp Select BMP output format (Windows flavor). 8-bit
colormapped format is emitted if -colors or -grayscale
is specified, or if the JPEG file is grayscale;
otherwise, 24-bit full-color format is emitted. This
format can only be used when decompressing
8-bit-per-sample JPEG images.
-gif Select GIF output format (LZW-compressed) [legacy
feature]. Since GIF does not support more than 256
colors, -colors 256 is assumed (unless you specify a
smaller number of colors). If you specify -fast, the
default number of colors is 216. This format can only
be used when decompressing 8-bit-per-sample or
12-bit-per-sample lossy JPEG images.
-gif0 Select GIF output format (uncompressed) [legacy
feature]. Since GIF does not support more than 256
colors, -colors 256 is assumed (unless you specify a
smaller number of colors). If you specify -fast, the
default number of colors is 216. This format can only
be used when decompressing 8-bit-per-sample or
12-bit-per-sample lossy JPEG images.
-os2 Select BMP output format (OS/2 1.x flavor) [legacy
feature]. 8-bit colormapped format is emitted if
-colors or -grayscale is specified, or if the JPEG file
is grayscale; otherwise, 24-bit full-color format is
emitted. This format can only be used when
decompressing 8-bit-per-sample JPEG images.
-pnm Select PBMPLUS (PPM/PGM) output format (this is the
default format). PGM is emitted if the JPEG file is
grayscale or if -grayscale is specified; otherwise PPM
is emitted.
-targa Select Targa output format [legacy feature]. Grayscale
format is emitted if the JPEG file is grayscale or if
-grayscale is specified; otherwise, colormapped format
is emitted if -colors is specified; otherwise, 24-bit
full-color format is emitted. This format can only be
used when decompressing 8-bit-per-sample JPEG images.
Switches for advanced users:
-dct int Use accurate integer DCT method (default).
-dct fast Use less accurate integer DCT method [legacy feature].
When the Independent JPEG Group's software was first
released in 1991, the decompression time for a
1-megapixel JPEG image on a mainstream PC was measured
in minutes. Thus, the fast integer DCT algorithm
provided noticeable performance benefits. On modern
CPUs running libjpeg-turbo, however, the decompression
time for a 1-megapixel JPEG image is measured in
milliseconds, and thus the performance benefits of the
fast algorithm are much less noticeable. On modern
x86/x86-64 CPUs that support AVX2 instructions, the
fast and int methods have similar performance. On
other types of CPUs, the fast method is generally about
5-15% faster than the int method.
If the JPEG image was compressed using a quality level
of 85 or below, then there should be little or no
perceptible quality difference between the two
algorithms. When decompressing images that were
compressed using quality levels above 85, however, the
difference between the fast and int methods becomes
more pronounced. With images compressed using
quality=97, for instance, the fast method incurs
generally about a 4-6 dB loss in PSNR relative to the
int method, but this can be larger for some images. If
you can avoid it, do not use the fast method when
decompressing images that were compressed using quality
levels above 97. The algorithm often degenerates for
such images and can actually produce a more lossy
output image than if the JPEG image had been compressed
using lower quality levels.
-dct float Use floating-point DCT method [legacy feature].
The float method does not produce significantly more
accurate results than the int method, and it is much
slower. The float method may also give different
results on different machines due to varying roundoff
behavior, whereas the integer methods should give the
same results on all machines.
-dither fs Use Floyd-Steinberg dithering when quantizing colors
[legacy feature].
-dither ordered Use ordered dithering when quantizing colors [legacy
feature].
-dither none Do not use dithering when quantizing colors [legacy
feature]. By default, Floyd-Steinberg dithering is
applied when quantizing colors. This is slower but
usually produces the best results. Ordered dithering
is a compromise between speed and quality. No
dithering is faster but usually looks awful. Note that
these switches have no effect unless color quantization
is being done. Ordered dithering is only available in
-onepass mode.
-icc FILE Extract ICC color management profile to the specified
file.
-map FILE Quantize to the colors used in the specified image file
[legacy feature]. This is useful for producing
multiple files with identical color maps, or for
forcing a predefined set of colors to be used. The
FILE must be a GIF or PPM file. This option overrides
-colors and -onepass.
-nosmooth Use a faster, lower-quality upsampling routine.
-onepass Use one-pass instead of two-pass color quantization
[legacy feature]. The one-pass method needs less
memory, but it produces a lower-quality image.
-onepass is ignored unless you also specify -colors N.
Also, the one-pass method is always used for grayscale
output. (The two-pass method has no improvement in
that case.)
-maxmemory N Set limit for amount of memory to use in processing
large images. Value is in thousands of bytes, or
millions of bytes if "M" is attached to the number.
For example, -max 4m selects 4000000 bytes. If more
space is needed, an error will occur.
-maxscans N Abort if the JPEG image contains more than N scans.
This feature demonstrates a method by which
applications can guard against denial-of-service
attacks instigated by specially-crafted malformed JPEG
images containing numerous scans with missing image
data or image data consisting only of "EOB runs" (a
feature of progressive JPEG images that allows
potentially hundreds of thousands of adjoining
zero-value pixels to be represented using only a few
bytes.) Attempting to decompress such malformed JPEG
images can cause excessive CPU activity, since the
decompressor must fully process each scan (even if the
scan is corrupt) before it can proceed to the next
scan.
-memsrc Load input file into memory before decompressing. This
feature was implemented mainly as a way of testing the
in-memory source manager (jpeg_mem_src().)
-report Report decompression progress.
-skip Y0,Y1 Decompress all rows of the JPEG image except those
between Y0 and Y1 (inclusive.) Note that if
decompression scaling is being used, then Y0 and Y1 are
relative to the scaled image dimensions.
-crop WxH+X+Y Decompress only a rectangular subregion of the image,
starting at point X,Y with width W and height H. If
necessary, X will be shifted left to the nearest iMCU
boundary, and the width will be increased accordingly.
Note that if decompression scaling is being used, then
X, Y, W, and H are relative to the scaled image
dimensions. Currently this option only works with the
PBMPLUS (PPM/PGM), GIF, and Targa output formats.
-strict Treat all warnings as fatal. This feature also
demonstrates a method by which applications can guard
against attacks instigated by specially-crafted
malformed JPEG images. Enabling this option will cause
the decompressor to abort if the JPEG image contains
incomplete or corrupt image data.
-verbose Enable debug printout. More -v's give more output.
or -debug Also, version information is printed at startup.
-version Print version information and exit.
HINTS FOR CJPEG
Color GIF files are not the ideal input for JPEG; JPEG is really intended for
compressing full-color (24-bit through 48-bit) images. In particular, don't
try to convert cartoons, line drawings, and other images that have only a few
distinct colors. GIF works great on these; JPEG does not. If you want to
convert a GIF to JPEG, you should experiment with cjpeg's -quality and -smooth
options to get a satisfactory conversion. -smooth 10 or so is often helpful.
Avoid running an image through a series of JPEG compression/decompression
cycles. Image quality loss will accumulate; after ten or so cycles the image
may be noticeably worse than it was after one cycle. It's best to use a
lossless format while manipulating an image, then convert to JPEG format when
you are ready to file the image away.
The -optimize option to cjpeg is worth using when you are making a "final"
version for posting or archiving. It's also a win when you are using low
quality settings to make very small JPEG files; the percentage improvement
is often a lot more than it is on larger files. (At present, -optimize
mode is always selected when generating progressive JPEG files.)
HINTS FOR BOTH PROGRAMS
If the memory needed by cjpeg or djpeg exceeds the limit specified by
-maxmemory, an error will occur. You can leave out -progressive and -optimize
(for cjpeg) or specify -onepass (for djpeg) to reduce memory usage.
On machines that have "environment" variables, you can define the environment
variable JPEGMEM to set the default memory limit. The value is specified as
described for the -maxmemory switch. JPEGMEM overrides the default value
specified when the program was compiled, and itself is overridden by an
explicit -maxmemory switch.
JPEGTRAN
jpegtran performs various useful transformations of lossy (DCT-based) JPEG
files. It can translate the coded representation from one variant of JPEG to
another, for example from baseline JPEG to progressive JPEG or vice versa. It
can also perform some rearrangements of the image data, for example turning an
image from landscape to portrait format by rotation. For EXIF files and JPEG
files containing Exif data, you may prefer to use exiftran instead.
jpegtran works by rearranging the compressed data (DCT coefficients), without
ever fully decoding the image. Therefore, its transformations are lossless:
there is no image degradation at all, which would not be true if you used
djpeg followed by cjpeg to accomplish the same conversion. But by the same
token, jpegtran cannot perform lossy operations such as changing the image
quality. However, while the image data is losslessly transformed, metadata
can be removed. See the -copy option for specifics.
jpegtran uses a command line syntax similar to cjpeg or djpeg.
On most systems, you say:
jpegtran [switches] [inputfile] >outputfile
If you defined TWO_FILE_COMMANDLINE when compiling the program, you can instead
say:
jpegtran [switches] inputfile outputfile
where both the input and output files are JPEG files.
To specify the coded JPEG representation used in the output file,
jpegtran accepts a subset of the switches recognized by cjpeg:
-optimize Perform optimization of entropy encoding parameters.
-progressive Create progressive JPEG file.
-arithmetic Use arithmetic coding.
-restart N Emit a JPEG restart marker every N MCU rows, or every
N MCUs if "B" is attached to the number.
-scans file Use the scan script given in the specified text file.
See the previous discussion of cjpeg for more details about these switches.
If you specify none of these switches, you get a plain baseline-JPEG output
file. The quality setting and so forth are determined by the input file.
The image can be losslessly transformed by giving one of these switches:
-flip horizontal Mirror image horizontally (left-right).
-flip vertical Mirror image vertically (top-bottom).
-rotate 90 Rotate image 90 degrees clockwise.
-rotate 180 Rotate image 180 degrees.
-rotate 270 Rotate image 270 degrees clockwise (or 90 ccw).
-transpose Transpose image (across UL-to-LR axis).
-transverse Transverse transpose (across UR-to-LL axis).
The transpose transformation has no restrictions regarding image dimensions.
The other transformations operate rather oddly if the image dimensions are not
a multiple of the iMCU size (usually 8 or 16 pixels), because they can only
transform complete blocks of DCT coefficient data in the desired way.
jpegtran's default behavior when transforming an odd-size image is designed
to preserve exact reversibility and mathematical consistency of the
transformation set. As stated, transpose is able to flip the entire image
area. Horizontal mirroring leaves any partial iMCU column at the right edge
untouched, but is able to flip all rows of the image. Similarly, vertical
mirroring leaves any partial iMCU row at the bottom edge untouched, but is
able to flip all columns. The other transforms can be built up as sequences
of transpose and flip operations; for consistency, their actions on edge
pixels are defined to be the same as the end result of the corresponding
transpose-and-flip sequence.
For practical use, you may prefer to discard any untransformable edge pixels
rather than having a strange-looking strip along the right and/or bottom edges
of a transformed image. To do this, add the -trim switch:
-trim Drop non-transformable edge blocks.
Obviously, a transformation with -trim is not reversible, so strictly speaking
jpegtran with this switch is not lossless. Also, the expected mathematical
equivalences between the transformations no longer hold. For example,
"-rot 270 -trim" trims only the bottom edge, but "-rot 90 -trim" followed by
"-rot 180 -trim" trims both edges.
If you are only interested in perfect transformations, add the -perfect switch:
-perfect Fail with an error if the transformation is not
perfect.
For example, you may want to do
jpegtran -rot 90 -perfect foo.jpg || djpeg foo.jpg | pnmflip -r90 | cjpeg
to do a perfect rotation, if available, or an approximated one if not.
This version of jpegtran also offers a lossless crop option, which discards
data outside of a given image region but losslessly preserves what is inside.
Like the rotate and flip transforms, lossless crop is restricted by the current
JPEG format; the upper left corner of the selected region must fall on an iMCU
boundary. If it doesn't, then it is silently moved up and/or left to the
nearest iMCU boundary (the lower right corner is unchanged.) Thus, the output
image covers at least the requested region, but it may cover more. The
adjustment of the region dimensions may be optionally disabled by attaching an
'f' character ("force") to the width or height number.
The image can be losslessly cropped by giving the switch:
-crop WxH+X+Y Crop to a rectangular region of width W and height H,
starting at point X,Y.
If W or H is larger than the width/height of the input image, then the output
image is expanded in size, and the expanded region is filled in with zeros
(neutral gray). Attaching an 'f' character ("flatten") to the width number
will cause each block in the expanded region to be filled in with the DC
coefficient of the nearest block in the input image rather than grayed out.
Attaching an 'r' character ("reflect") to the width number will cause the
expanded region to be filled in with repeated reflections of the input image
rather than grayed out.
A complementary lossless wipe option is provided to discard (gray out) data
inside a given image region while losslessly preserving what is outside:
-wipe WxH+X+Y Wipe (gray out) a rectangular region of width W and
height H from the input image, starting at point X,Y.
Attaching an 'f' character ("flatten") to the width number will cause the
region to be filled with the average of adjacent blocks rather than grayed out.
If the wipe region and the region outside the wipe region, when adjusted to the
nearest iMCU boundary, form two horizontally adjacent rectangles, then
attaching an 'r' character ("reflect") to the width number will cause the wipe
region to be filled with repeated reflections of the outside region rather than
grayed out.
A lossless drop option is also provided, which allows another JPEG image to be
inserted ("dropped") into the input image data at a given position, replacing
the existing image data at that position:
-drop +X+Y filename Drop (insert) another image at point X,Y
Both the input image and the drop image must have the same subsampling level.
It is best if they also have the same quantization (quality.) Otherwise, the
quantization of the output image will be adapted to accommodate the higher of
the input image quality and the drop image quality. The trim option can be
used with the drop option to requantize the drop image to match the input
image. Note that a grayscale image can be dropped into a full-color image or
vice versa, as long as the full-color image has no vertical subsampling. If
the input image is grayscale and the drop image is full-color, then the
chrominance channels from the drop image will be discarded.
Other not-strictly-lossless transformation switches are:
-grayscale Force grayscale output.
This option discards the chrominance channels if the input image is YCbCr
(ie, a standard color JPEG), resulting in a grayscale JPEG file. The
luminance channel is preserved exactly, so this is a better method of reducing
to grayscale than decompression, conversion, and recompression. This switch
is particularly handy for fixing a monochrome picture that was mistakenly
encoded as a color JPEG. (In such a case, the space savings from getting rid
of the near-empty chroma channels won't be large; but the decoding time for
a grayscale JPEG is substantially less than that for a color JPEG.)
jpegtran also recognizes these switches that control what to do with "extra"
markers, such as comment blocks:
-copy none Copy no extra markers from source file. This setting
suppresses all comments and other metadata in the
source file.
-copy comments Copy only comment markers. This setting copies
comments from the source file but discards any other
metadata.
-copy icc Copy only ICC profile markers. This setting copies the
ICC profile from the source file but discards any other
metadata.
-copy all Copy all extra markers. This setting preserves
miscellaneous markers found in the source file, such
as JFIF thumbnails, Exif data, and Photoshop settings.
In some files, these extra markers can be sizable.
Note that this option will copy thumbnails as-is;
they will not be transformed.
The default behavior is -copy comments. (Note: in IJG releases v6 and v6a,
jpegtran always did the equivalent of -copy none.)
Additional switches recognized by jpegtran are:
-icc FILE
-maxmemory N
-maxscans N
-outfile filename
-report
-strict
-verbose
-debug
-version
These work the same as in cjpeg or djpeg.
THE COMMENT UTILITIES
The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file.
Although the standard doesn't actually define what COM blocks are for, they
are widely used to hold user-supplied text strings. This lets you add
annotations, titles, index terms, etc to your JPEG files, and later retrieve
them as text. COM blocks do not interfere with the image stored in the JPEG
file. The maximum size of a COM block is 64K, but you can have as many of
them as you like in one JPEG file.
We provide two utility programs to display COM block contents and add COM
blocks to a JPEG file.
rdjpgcom searches a JPEG file and prints the contents of any COM blocks on
standard output. The command line syntax is
rdjpgcom [-raw] [-verbose] [inputfilename]
The switch "-raw" (or just "-r") causes rdjpgcom to output non-printable
characters in JPEG comments. These characters are normally escaped for
security reasons.
The switch "-verbose" (or just "-v") causes rdjpgcom to also display the JPEG
image dimensions. If you omit the input file name from the command line,
the JPEG file is read from standard input. (This may not work on some
operating systems, if binary data can't be read from stdin.)
wrjpgcom adds a COM block, containing text you provide, to a JPEG file.
Ordinarily, the COM block is added after any existing COM blocks, but you
can delete the old COM blocks if you wish. wrjpgcom produces a new JPEG
file; it does not modify the input file. DO NOT try to overwrite the input
file by directing wrjpgcom's output back into it; on most systems this will
just destroy your file.
The command line syntax for wrjpgcom is similar to cjpeg's. On most systems,
it is
wrjpgcom [switches] [inputfilename]
The output file is written to standard output. The input file comes from
the named file, or from standard input if no input file is named.
If you defined TWO_FILE_COMMANDLINE when compiling the program, the syntax is:
wrjpgcom [switches] inputfilename outputfilename
where both input and output file names must be given explicitly.
wrjpgcom understands three switches:
-replace Delete any existing COM blocks from the file.
-comment "Comment text" Supply new COM text on command line.
-cfile name Read text for new COM block from named file.
(Switch names can be abbreviated.) If you have only one line of comment text
to add, you can provide it on the command line with -comment. The comment
text must be surrounded with quotes so that it is treated as a single
argument. Longer comments can be read from a text file.
If you give neither -comment nor -cfile, then wrjpgcom will read the comment
text from standard input. (In this case an input image file name MUST be
supplied, so that the source JPEG file comes from somewhere else.) You can
enter multiple lines, up to 64KB worth. Type an end-of-file indicator
(usually control-D or control-Z) to terminate the comment text entry.
wrjpgcom will not add a COM block if the provided comment string is empty.
Therefore -replace -comment "" can be used to delete all COM blocks from a
file.
These utility programs do not depend on the IJG JPEG library. In
particular, the source code for rdjpgcom is intended as an illustration of
the minimum amount of code required to parse a JPEG file header correctly.

64
linux/contrib/libjpeg-turbo-3.1.2/fuzz/CMakeLists.txt
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@ -1,64 +0,0 @@
if(NOT ENABLE_STATIC)
message(FATAL_ERROR "Fuzz targets require static libraries.")
endif()
if(NOT WITH_TURBOJPEG)
message(FATAL_ERROR "Fuzz targets require the TurboJPEG API library.")
endif()
set(FUZZ_BINDIR "" CACHE PATH
"Directory into which fuzz targets should be installed")
if(NOT FUZZ_BINDIR)
message(FATAL_ERROR "FUZZ_BINDIR must be specified.")
endif()
message(STATUS "FUZZ_BINDIR = ${FUZZ_BINDIR}")
set(FUZZ_LIBRARY "" CACHE STRING
"Path to fuzzer library or flags necessary to link with it")
if(NOT FUZZ_LIBRARY)
message(FATAL_ERROR "FUZZ_LIBRARY must be specified.")
endif()
message(STATUS "FUZZ_LIBRARY = ${FUZZ_LIBRARY}")
enable_language(CXX)
set(EFFECTIVE_CXX_FLAGS
"${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message(STATUS "C++ Compiler flags = ${EFFECTIVE_CXX_FLAGS}")
add_executable(cjpeg_fuzzer${FUZZER_SUFFIX} cjpeg.cc ../src/cdjpeg.c
../src/rdbmp.c ../src/rdgif.c ../src/rdppm.c ../src/rdswitch.c
../src/rdtarga.c)
set_property(TARGET cjpeg_fuzzer${FUZZER_SUFFIX} PROPERTY COMPILE_FLAGS
${COMPILE_FLAGS})
target_link_libraries(cjpeg_fuzzer${FUZZER_SUFFIX} ${FUZZ_LIBRARY} jpeg-static)
install(TARGETS cjpeg_fuzzer${FUZZER_SUFFIX}
RUNTIME DESTINATION ${FUZZ_BINDIR} COMPONENT bin)
macro(add_fuzz_target target source_file)
add_executable(${target}_fuzzer${FUZZER_SUFFIX} ${source_file})
target_link_libraries(${target}_fuzzer${FUZZER_SUFFIX} ${FUZZ_LIBRARY}
turbojpeg-static)
install(TARGETS ${target}_fuzzer${FUZZER_SUFFIX}
RUNTIME DESTINATION ${FUZZ_BINDIR} COMPONENT bin)
endmacro()
add_fuzz_target(compress compress.cc)
add_fuzz_target(compress_yuv compress_yuv.cc)
add_fuzz_target(compress_lossless compress_lossless.cc)
add_fuzz_target(compress12 compress12.cc)
add_fuzz_target(compress12_lossless compress12.cc)
add_fuzz_target(compress16_lossless compress16_lossless.cc)
# NOTE: This target is named libjpeg_turbo_fuzzer instead of decompress_fuzzer
# in order to preserve the corpora from Google's OSS-Fuzz target for
# libjpeg-turbo, which this target replaces.
add_fuzz_target(libjpeg_turbo decompress.cc)
add_fuzz_target(decompress_yuv decompress_yuv.cc)
add_fuzz_target(transform transform.cc)

33
linux/contrib/libjpeg-turbo-3.1.2/fuzz/build.sh
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@ -1,33 +0,0 @@
#!/bin/bash
set -u
set -e
FUZZER_SUFFIX=
if [ $# -ge 1 ]; then
FUZZER_SUFFIX="$1"
FUZZER_SUFFIX="`echo $1 | sed 's/\./_/g'`"
fi
if [ "$SANITIZER" = "memory" ]; then
export CFLAGS="$CFLAGS -DZERO_BUFFERS=1"
fi
cmake . -DCMAKE_BUILD_TYPE=RelWithDebInfo -DENABLE_STATIC=1 -DENABLE_SHARED=0 \
-DCMAKE_C_FLAGS_RELWITHDEBINFO="-g -DNDEBUG" \
-DCMAKE_CXX_FLAGS_RELWITHDEBINFO="-g -DNDEBUG" -DCMAKE_INSTALL_PREFIX=$WORK \
-DWITH_FUZZ=1 -DFUZZ_BINDIR=$OUT -DFUZZ_LIBRARY=$LIB_FUZZING_ENGINE \
-DFUZZER_SUFFIX="$FUZZER_SUFFIX"
make "-j$(nproc)" "--load-average=$(nproc)"
make install
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/cjpeg_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress_yuv_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress_lossless_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress12_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress12_lossless_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/compress_fuzzer_seed_corpus.zip $OUT/compress16_lossless_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/decompress_fuzzer_seed_corpus.zip $OUT/libjpeg_turbo_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/decompress_fuzzer_seed_corpus.zip $OUT/decompress_yuv_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip
cp $SRC/decompress_fuzzer_seed_corpus.zip $OUT/transform_fuzzer${FUZZER_SUFFIX}_seed_corpus.zip

82
linux/contrib/libjpeg-turbo-3.1.2/fuzz/cjpeg.cc
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@ -1,82 +0,0 @@
/*
* Copyright (C)2021, 2024 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* This fuzz target wraps cjpeg in order to test esoteric compression options
as well as the GIF and Targa readers. */
#define main cjpeg_main
#define CJPEG_FUZZER
extern "C" {
#include "../src/cjpeg.c"
}
#undef main
#undef CJPEG_FUZZER
#include <stdint.h>
#include <unistd.h>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
char filename[FILENAME_MAX] = { 0 };
char *argv1[] = {
(char *)"cjpeg", (char *)"-dct", (char *)"float", (char *)"-memdst",
(char *)"-optimize", (char *)"-quality", (char *)"100,99,98",
(char *)"-restart", (char *)"2", (char *)"-sample", (char *)"4x1,2x2,1x2",
(char *)"-targa", NULL
};
char *argv2[] = {
(char *)"cjpeg", (char *)"-arithmetic", (char *)"-dct", (char *)"float",
(char *)"-memdst", (char *)"-quality", (char *)"90,80,70", (char *)"-rgb",
(char *)"-sample", (char *)"2x2", (char *)"-smooth", (char *)"50",
(char *)"-targa", NULL
};
int fd = -1;
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_cjpeg_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
argv1[12] = argv2[13] = filename;
cjpeg_main(13, argv1);
cjpeg_main(14, argv2);
argv1[12] = argv2[13] = NULL;
argv1[11] = argv2[12] = filename;
cjpeg_main(12, argv1);
cjpeg_main(13, argv2);
bailout:
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
return 0;
}

127
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress.cc
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@ -1,127 +0,0 @@
/*
* Copyright (C)2021, 2023-2025 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 7
struct test {
enum TJPF pf;
enum TJSAMP subsamp;
int quality;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
unsigned char *srcBuf = NULL, *dstBuf = NULL;
int width = 0, height = 0, fd = -1, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_RGB, TJSAMP_444, 100 },
{ TJPF_BGR, TJSAMP_422, 90 },
{ TJPF_RGBX, TJSAMP_420, 80 },
{ TJPF_BGRA, TJSAMP_411, 70 },
{ TJPF_XRGB, TJSAMP_GRAY, 60 },
{ TJPF_GRAY, TJSAMP_GRAY, 50 },
{ TJPF_CMYK, TJSAMP_440, 40 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize, i, sum = 0;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_FASTDCT, ti == 1);
tj3Set(handle, TJPARAM_OPTIMIZE, ti == 6);
tj3Set(handle, TJPARAM_PROGRESSIVE, ti == 1 || ti == 3);
tj3Set(handle, TJPARAM_ARITHMETIC, ti == 2 || ti == 3);
tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
tj3Set(handle, TJPARAM_RESTARTROWS, ti == 1 || ti == 2 ? 2 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage8() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage8(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, tests[ti].subsamp);
if (tj3Get(handle, TJPARAM_NOREALLOC)) {
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
} else
dstBuf = NULL;
tj3Set(handle, TJPARAM_SUBSAMP, tests[ti].subsamp);
tj3Set(handle, TJPARAM_QUALITY, tests[ti].quality);
if (tj3Compress8(handle, srcBuf, width, 0, height, pf, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

127
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress12.cc
View File

@ -1,127 +0,0 @@
/*
* Copyright (C)2021, 2023-2025 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 7
struct test {
enum TJPF pf;
enum TJSAMP subsamp;
int quality;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
short *srcBuf = NULL;
unsigned char *dstBuf = NULL;
int width = 0, height = 0, fd = -1, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_RGB, TJSAMP_444, 100 },
{ TJPF_BGR, TJSAMP_422, 90 },
{ TJPF_RGBX, TJSAMP_420, 80 },
{ TJPF_BGRA, TJSAMP_411, 70 },
{ TJPF_XRGB, TJSAMP_GRAY, 60 },
{ TJPF_GRAY, TJSAMP_GRAY, 50 },
{ TJPF_CMYK, TJSAMP_440, 40 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress12_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize, i, sum = 0;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_FASTDCT, ti == 0);
tj3Set(handle, TJPARAM_PROGRESSIVE, ti == 1 || ti == 3);
tj3Set(handle, TJPARAM_ARITHMETIC, ti == 2 || ti == 3);
tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
tj3Set(handle, TJPARAM_RESTARTROWS, ti == 1 || ti == 2 ? 2 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage12() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage12(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, tests[ti].subsamp);
if (tj3Get(handle, TJPARAM_NOREALLOC)) {
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
} else
dstBuf = NULL;
tj3Set(handle, TJPARAM_SUBSAMP, tests[ti].subsamp);
tj3Set(handle, TJPARAM_QUALITY, tests[ti].quality);
if (tj3Compress12(handle, srcBuf, width, 0, height, pf, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

125
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress12_lossless.cc
View File

@ -1,125 +0,0 @@
/*
* Copyright (C)2021-2024 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 7
struct test {
enum TJPF pf;
int precision, psv, pt;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
short *srcBuf = NULL;
unsigned char *dstBuf = NULL;
int width = 0, height = 0, fd = -1, i, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_RGB, 12, 1, 0 },
{ TJPF_BGR, 11, 2, 2 },
{ TJPF_RGBX, 10, 3, 4 },
{ TJPF_BGRA, 9, 4, 7 },
{ TJPF_XRGB, 12, 5, 5 },
{ TJPF_GRAY, 12, 6, 3 },
{ TJPF_CMYK, 12, 7, 0 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int sum = 0, pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
tj3Set(handle, TJPARAM_PRECISION, tests[ti].precision);
tj3Set(handle, TJPARAM_RESTARTROWS, ti == 0 || ti == 6 ? 1 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage12() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage12(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, TJSAMP_444);
if (tj3Get(handle, TJPARAM_NOREALLOC)) {
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
} else
dstBuf = NULL;
tj3Set(handle, TJPARAM_LOSSLESS, 1);
tj3Set(handle, TJPARAM_LOSSLESSPSV, tests[ti].psv);
tj3Set(handle, TJPARAM_LOSSLESSPT, tests[ti].pt);
if (tj3Compress12(handle, srcBuf, width, 0, height, pf, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

125
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress16_lossless.cc
View File

@ -1,125 +0,0 @@
/*
* Copyright (C)2021-2025 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 7
struct test {
enum TJPF pf;
int precision, psv, pt;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
unsigned short *srcBuf = NULL;
unsigned char *dstBuf = NULL;
int width = 0, height = 0, fd = -1, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_RGB, 16, 1, 0 },
{ TJPF_BGR, 15, 2, 2 },
{ TJPF_RGBX, 14, 3, 4 },
{ TJPF_BGRA, 13, 4, 7 },
{ TJPF_XRGB, 16, 5, 5 },
{ TJPF_GRAY, 16, 6, 3 },
{ TJPF_CMYK, 16, 7, 0 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize, i, sum = 0;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
tj3Set(handle, TJPARAM_PRECISION, tests[ti].precision);
tj3Set(handle, TJPARAM_RESTARTROWS, ti == 0 || ti == 6 ? 1 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage16() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage16(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, TJSAMP_444);
if (tj3Get(handle, TJPARAM_NOREALLOC)) {
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
} else
dstBuf = NULL;
tj3Set(handle, TJPARAM_LOSSLESS, 1);
tj3Set(handle, TJPARAM_LOSSLESSPSV, tests[ti].psv);
tj3Set(handle, TJPARAM_LOSSLESSPT, tests[ti].pt);
if (tj3Compress16(handle, srcBuf, width, 0, height, pf, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

124
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress_lossless.cc
View File

@ -1,124 +0,0 @@
/*
* Copyright (C)2021-2025 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 7
struct test {
enum TJPF pf;
int precision, psv, pt;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
unsigned char *srcBuf = NULL, *dstBuf = NULL;
int width = 0, height = 0, fd = -1, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_RGB, 8, 1, 0 },
{ TJPF_BGR, 7, 2, 5 },
{ TJPF_RGBX, 6, 3, 4 },
{ TJPF_BGRA, 5, 4, 1 },
{ TJPF_XRGB, 4, 5, 3 },
{ TJPF_GRAY, 3, 6, 2 },
{ TJPF_CMYK, 2, 7, 0 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize, i, sum = 0;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
tj3Set(handle, TJPARAM_PRECISION, tests[ti].precision);
tj3Set(handle, TJPARAM_RESTARTROWS, ti == 0 || ti == 6 ? 1 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage8() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage8(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, TJSAMP_444);
if (tj3Get(handle, TJPARAM_NOREALLOC)) {
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
} else
dstBuf = NULL;
tj3Set(handle, TJPARAM_LOSSLESS, 1);
tj3Set(handle, TJPARAM_LOSSLESSPSV, tests[ti].psv);
tj3Set(handle, TJPARAM_LOSSLESSPT, tests[ti].pt);
if (tj3Compress8(handle, srcBuf, width, 0, height, pf, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

131
linux/contrib/libjpeg-turbo-3.1.2/fuzz/compress_yuv.cc
View File

@ -1,131 +0,0 @@
/*
* Copyright (C)2021-2025 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#define NUMTESTS 6
struct test {
enum TJPF pf;
enum TJSAMP subsamp;
int quality;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
unsigned char *srcBuf = NULL, *dstBuf = NULL, *yuvBuf = NULL;
int width = 0, height = 0, fd = -1, ti;
char filename[FILENAME_MAX] = { 0 };
struct test tests[NUMTESTS] = {
{ TJPF_XBGR, TJSAMP_444, 100 },
{ TJPF_XRGB, TJSAMP_422, 90 },
{ TJPF_BGR, TJSAMP_420, 80 },
{ TJPF_RGB, TJSAMP_411, 70 },
{ TJPF_BGR, TJSAMP_GRAY, 60 },
{ TJPF_GRAY, TJSAMP_GRAY, 50 }
};
snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_yuv_fuzz.XXXXXX");
if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
goto bailout;
if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
goto bailout;
for (ti = 0; ti < NUMTESTS; ti++) {
int pf = tests[ti].pf;
size_t dstSize = 0, maxBufSize, i, sum = 0;
/* Test non-default compression options on specific iterations. */
tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
tj3Set(handle, TJPARAM_FASTDCT, ti == 1);
tj3Set(handle, TJPARAM_OPTIMIZE, ti == 4);
tj3Set(handle, TJPARAM_PROGRESSIVE, ti == 1 || ti == 3);
tj3Set(handle, TJPARAM_ARITHMETIC, ti == 2 || ti == 3);
tj3Set(handle, TJPARAM_NOREALLOC, 1);
tj3Set(handle, TJPARAM_RESTARTBLOCKS, ti == 3 || ti == 4 ? 4 : 0);
tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
/* tj3LoadImage8() will refuse to load images larger than 1 Megapixel, so
we don't need to check the width and height here. */
if ((srcBuf = tj3LoadImage8(handle, filename, &width, 1, &height,
&pf)) == NULL)
continue;
dstSize = maxBufSize = tj3JPEGBufSize(width, height, tests[ti].subsamp);
if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
goto bailout;
if ((yuvBuf =
(unsigned char *)malloc(tj3YUVBufSize(width, 1, height,
tests[ti].subsamp))) == NULL)
goto bailout;
tj3Set(handle, TJPARAM_SUBSAMP, tests[ti].subsamp);
tj3Set(handle, TJPARAM_QUALITY, tests[ti].quality);
if (tj3EncodeYUV8(handle, srcBuf, width, 0, height, pf, yuvBuf, 1) == 0 &&
tj3CompressFromYUV8(handle, yuvBuf, width, 1, height, &dstBuf,
&dstSize) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < dstSize; i++)
sum += dstBuf[i];
}
free(dstBuf);
dstBuf = NULL;
free(yuvBuf);
yuvBuf = NULL;
tj3Free(srcBuf);
srcBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * maxBufSize)
goto bailout;
}
bailout:
free(dstBuf);
free(yuvBuf);
tj3Free(srcBuf);
if (fd >= 0) {
close(fd);
if (strlen(filename) > 0) unlink(filename);
}
tj3Destroy(handle);
return 0;
}

142
linux/contrib/libjpeg-turbo-3.1.2/fuzz/decompress.cc
View File

@ -1,142 +0,0 @@
/*
* Copyright (C)2021-2024 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdlib.h>
#include <stdint.h>
#define NUMPF 4
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
void *dstBuf = NULL;
int width = 0, height = 0, precision, sampleSize, pfi;
/* TJPF_RGB-TJPF_BGR share the same code paths, as do TJPF_RGBX-TJPF_XRGB and
TJPF_RGBA-TJPF_ARGB. Thus, the pixel formats below should be the minimum
necessary to achieve full coverage. */
enum TJPF pixelFormats[NUMPF] =
{ TJPF_RGB, TJPF_BGRX, TJPF_GRAY, TJPF_CMYK };
if ((handle = tj3Init(TJINIT_DECOMPRESS)) == NULL)
goto bailout;
/* We ignore the return value of tj3DecompressHeader(), because malformed
JPEG images that might expose issues in libjpeg-turbo might also have
header errors that cause tj3DecompressHeader() to fail. */
tj3DecompressHeader(handle, data, size);
width = tj3Get(handle, TJPARAM_JPEGWIDTH);
height = tj3Get(handle, TJPARAM_JPEGHEIGHT);
precision = tj3Get(handle, TJPARAM_PRECISION);
sampleSize = (precision > 8 ? 2 : 1);
/* Ignore 0-pixel images and images larger than 1 Megapixel, as Google's
OSS-Fuzz target for libjpeg-turbo did. Casting width to (uint64_t)
prevents integer overflow if width * height > INT_MAX. */
if (width < 1 || height < 1 || (uint64_t)width * height > 1048576)
goto bailout;
tj3Set(handle, TJPARAM_SCANLIMIT, 500);
for (pfi = 0; pfi < NUMPF; pfi++) {
int w = width, h = height;
int pf = pixelFormats[pfi], i;
int64_t sum = 0;
/* Test non-default decompression options on the first iteration. */
tj3Set(handle, TJPARAM_BOTTOMUP, pfi == 0);
tj3Set(handle, TJPARAM_FASTUPSAMPLE, pfi == 0);
if (!tj3Get(handle, TJPARAM_LOSSLESS)) {
tj3Set(handle, TJPARAM_FASTDCT, pfi == 0);
/* Test IDCT scaling on the second iteration. */
if (pfi == 1) {
tjscalingfactor sf = { 1, 2 };
tj3SetScalingFactor(handle, sf);
w = TJSCALED(width, sf);
h = TJSCALED(height, sf);
} else
tj3SetScalingFactor(handle, TJUNSCALED);
/* Test partial image decompression on the fourth iteration, if the image
is large enough. */
if (pfi == 3 && w >= 97 && h >= 75) {
tjregion cr = { 32, 16, 65, 59 };
tj3SetCroppingRegion(handle, cr);
} else
tj3SetCroppingRegion(handle, TJUNCROPPED);
}
if ((dstBuf = tj3Alloc(w * h * tjPixelSize[pf] * sampleSize)) == NULL)
goto bailout;
if (precision == 8) {
if (tj3Decompress8(handle, data, size, (unsigned char *)dstBuf, 0,
pf) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < w * h * tjPixelSize[pf]; i++)
sum += ((unsigned char *)dstBuf)[i];
} else
goto bailout;
} else if (precision == 12) {
if (tj3Decompress12(handle, data, size, (short *)dstBuf, 0, pf) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < w * h * tjPixelSize[pf]; i++)
sum += ((short *)dstBuf)[i];
} else
goto bailout;
} else {
if (tj3Decompress16(handle, data, size, (unsigned short *)dstBuf, 0,
pf) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < w * h * tjPixelSize[pf]; i++)
sum += ((unsigned short *)dstBuf)[i];
} else
goto bailout;
}
free(dstBuf);
dstBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > ((1LL << precision) - 1LL) * 1048576LL * tjPixelSize[pf])
goto bailout;
}
bailout:
free(dstBuf);
tj3Destroy(handle);
return 0;
}

118
linux/contrib/libjpeg-turbo-3.1.2/fuzz/decompress_yuv.cc
View File

@ -1,118 +0,0 @@
/*
* Copyright (C)2021-2024 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <turbojpeg.h>
#include <stdlib.h>
#include <stdint.h>
#define NUMPF 3
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
tjhandle handle = NULL;
unsigned char *dstBuf = NULL, *yuvBuf = NULL;
int width = 0, height = 0, jpegSubsamp, pfi;
/* TJPF_RGB-TJPF_BGR share the same code paths, as do TJPF_RGBX-TJPF_XRGB and
TJPF_RGBA-TJPF_ARGB. Thus, the pixel formats below should be the minimum
necessary to achieve full coverage. */
enum TJPF pixelFormats[NUMPF] =
{ TJPF_BGR, TJPF_XRGB, TJPF_GRAY };
if ((handle = tj3Init(TJINIT_DECOMPRESS)) == NULL)
goto bailout;
/* We ignore the return value of tj3DecompressHeader(), because malformed
JPEG images that might expose issues in libjpeg-turbo might also have
header errors that cause tj3DecompressHeader() to fail. */
tj3DecompressHeader(handle, data, size);
width = tj3Get(handle, TJPARAM_JPEGWIDTH);
height = tj3Get(handle, TJPARAM_JPEGHEIGHT);
jpegSubsamp = tj3Get(handle, TJPARAM_SUBSAMP);
/* Ignore 0-pixel images and images larger than 1 Megapixel. Casting width
to (uint64_t) prevents integer overflow if width * height > INT_MAX. */
if (width < 1 || height < 1 || (uint64_t)width * height > 1048576)
goto bailout;
tj3Set(handle, TJPARAM_SCANLIMIT, 500);
for (pfi = 0; pfi < NUMPF; pfi++) {
int w = width, h = height;
int pf = pixelFormats[pfi], i, sum = 0;
/* Test non-default decompression options on the first iteration. */
if (!tj3Get(handle, TJPARAM_LOSSLESS)) {
tj3Set(handle, TJPARAM_BOTTOMUP, pfi == 0);
tj3Set(handle, TJPARAM_FASTUPSAMPLE, pfi == 0);
tj3Set(handle, TJPARAM_FASTDCT, pfi == 0);
/* Test IDCT scaling on the second iteration. */
if (pfi == 1) {
tjscalingfactor sf = { 3, 4 };
tj3SetScalingFactor(handle, sf);
w = TJSCALED(width, sf);
h = TJSCALED(height, sf);
} else
tj3SetScalingFactor(handle, TJUNSCALED);
}
if ((dstBuf = (unsigned char *)tj3Alloc(w * h * tjPixelSize[pf])) == NULL)
goto bailout;
if ((yuvBuf =
(unsigned char *)tj3Alloc(tj3YUVBufSize(w, 1, h,
jpegSubsamp))) == NULL)
goto bailout;
if (tj3DecompressToYUV8(handle, data, size, yuvBuf, 1) == 0 &&
tj3DecodeYUV8(handle, yuvBuf, 1, dstBuf, w, 0, h, pf) == 0) {
/* Touch all of the output pixels in order to catch uninitialized reads
when using MemorySanitizer. */
for (i = 0; i < w * h * tjPixelSize[pf]; i++)
sum += dstBuf[i];
} else
goto bailout;
free(dstBuf);
dstBuf = NULL;
free(yuvBuf);
yuvBuf = NULL;
/* Prevent the code above from being optimized out. This test should never
be true, but the compiler doesn't know that. */
if (sum > 255 * 1048576 * tjPixelSize[pf])
goto bailout;
}
bailout:
free(dstBuf);
free(yuvBuf);
tj3Destroy(handle);
return 0;
}

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