diff options
Diffstat (limited to 'core/fxcodec/codec/ccodec_jpegmodule.cpp')
| -rw-r--r-- | core/fxcodec/codec/ccodec_jpegmodule.cpp | 580 |
1 files changed, 580 insertions, 0 deletions
diff --git a/core/fxcodec/codec/ccodec_jpegmodule.cpp b/core/fxcodec/codec/ccodec_jpegmodule.cpp new file mode 100644 index 0000000000..e6aef3c05b --- /dev/null +++ b/core/fxcodec/codec/ccodec_jpegmodule.cpp @@ -0,0 +1,580 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fxcodec/codec/ccodec_jpegmodule.h" + +#include <setjmp.h> + +#include <memory> +#include <utility> + +#include "core/fxcodec/codec/ccodec_scanlinedecoder.h" +#include "core/fxcodec/fx_codec.h" +#include "core/fxcrt/fx_memory.h" +#include "core/fxcrt/fx_safe_types.h" +#include "core/fxge/dib/cfx_dibbase.h" +#include "core/fxge/fx_dib.h" +#include "third_party/base/logging.h" +#include "third_party/base/ptr_util.h" + +extern "C" { +#undef FAR +#if defined(USE_SYSTEM_LIBJPEG) +#include <jpeglib.h> +#elif defined(USE_LIBJPEG_TURBO) +#include "third_party/libjpeg_turbo/jpeglib.h" +#else +#include "third_party/libjpeg/jpeglib.h" +#endif +} // extern "C" + +class CJpegContext final : public CCodec_JpegModule::Context { + public: + CJpegContext(); + ~CJpegContext() override; + + jmp_buf* GetJumpMark() override { return &m_JumpMark; } + + jmp_buf m_JumpMark; + jpeg_decompress_struct m_Info; + jpeg_error_mgr m_ErrMgr; + jpeg_source_mgr m_SrcMgr; + unsigned int m_SkipSize; + void* (*m_AllocFunc)(unsigned int); + void (*m_FreeFunc)(void*); +}; + +static pdfium::span<const uint8_t> JpegScanSOI( + pdfium::span<const uint8_t> src_span) { + if (src_span.empty()) + return {}; + + for (size_t offset = 0; offset < src_span.size() - 1; ++offset) { + if (src_span[offset] == 0xff && src_span[offset + 1] == 0xd8) + return src_span.subspan(offset); + } + return src_span; +} + +extern "C" { + +static void _src_do_nothing(struct jpeg_decompress_struct* cinfo) {} + +static void _error_fatal(j_common_ptr cinfo) { + longjmp(*(jmp_buf*)cinfo->client_data, -1); +} + +static void _src_skip_data(struct jpeg_decompress_struct* cinfo, long num) { + if (num > (long)cinfo->src->bytes_in_buffer) { + _error_fatal((j_common_ptr)cinfo); + } + cinfo->src->next_input_byte += num; + cinfo->src->bytes_in_buffer -= num; +} + +static boolean _src_fill_buffer(j_decompress_ptr cinfo) { + return 0; +} + +static boolean _src_resync(j_decompress_ptr cinfo, int desired) { + return 0; +} + +static void _error_do_nothing(j_common_ptr cinfo) {} + +static void _error_do_nothing1(j_common_ptr cinfo, int) {} + +static void _error_do_nothing2(j_common_ptr cinfo, char*) {} + +#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ +static void _dest_do_nothing(j_compress_ptr cinfo) {} + +static boolean _dest_empty(j_compress_ptr cinfo) { + return false; +} +#endif // _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ +} // extern "C" + +#ifdef PDF_ENABLE_XFA +static void JpegLoadAttribute(struct jpeg_decompress_struct* pInfo, + CFX_DIBAttribute* pAttribute) { + if (!pAttribute) + return; + + pAttribute->m_nXDPI = pInfo->X_density; + pAttribute->m_nYDPI = pInfo->Y_density; + pAttribute->m_wDPIUnit = pInfo->density_unit; +} +#endif // PDF_ENABLE_XFA + +static bool JpegLoadInfo(pdfium::span<const uint8_t> src_span, + int* width, + int* height, + int* num_components, + int* bits_per_components, + bool* color_transform) { + src_span = JpegScanSOI(src_span); + struct jpeg_decompress_struct cinfo; + struct jpeg_error_mgr jerr; + jerr.error_exit = _error_fatal; + jerr.emit_message = _error_do_nothing1; + jerr.output_message = _error_do_nothing; + jerr.format_message = _error_do_nothing2; + jerr.reset_error_mgr = _error_do_nothing; + jerr.trace_level = 0; + cinfo.err = &jerr; + jmp_buf mark; + cinfo.client_data = &mark; + if (setjmp(mark) == -1) + return false; + + jpeg_create_decompress(&cinfo); + struct jpeg_source_mgr src; + src.init_source = _src_do_nothing; + src.term_source = _src_do_nothing; + src.skip_input_data = _src_skip_data; + src.fill_input_buffer = _src_fill_buffer; + src.resync_to_restart = _src_resync; + src.bytes_in_buffer = src_span.size(); + src.next_input_byte = src_span.data(); + cinfo.src = &src; + if (setjmp(mark) == -1) { + jpeg_destroy_decompress(&cinfo); + return false; + } + int ret = jpeg_read_header(&cinfo, true); + if (ret != JPEG_HEADER_OK) { + jpeg_destroy_decompress(&cinfo); + return false; + } + *width = cinfo.image_width; + *height = cinfo.image_height; + *num_components = cinfo.num_components; + *color_transform = + cinfo.jpeg_color_space == JCS_YCbCr || cinfo.jpeg_color_space == JCS_YCCK; + *bits_per_components = cinfo.data_precision; + jpeg_destroy_decompress(&cinfo); + return true; +} + +class CCodec_JpegDecoder final : public CCodec_ScanlineDecoder { + public: + CCodec_JpegDecoder(); + ~CCodec_JpegDecoder() override; + + bool Create(pdfium::span<const uint8_t> src_buf, + int width, + int height, + int nComps, + bool ColorTransform); + + // CCodec_ScanlineDecoder + bool v_Rewind() override; + uint8_t* v_GetNextLine() override; + uint32_t GetSrcOffset() override; + + bool InitDecode(); + + jmp_buf m_JmpBuf; + struct jpeg_decompress_struct cinfo; + struct jpeg_error_mgr jerr; + struct jpeg_source_mgr src; + pdfium::span<const uint8_t> m_SrcSpan; + std::unique_ptr<uint8_t, FxFreeDeleter> m_pScanlineBuf; + bool m_bInited = false; + bool m_bStarted = false; + bool m_bJpegTransform = false; + + private: + uint32_t m_nDefaultScaleDenom = 1; +}; + +CCodec_JpegDecoder::CCodec_JpegDecoder() { + memset(&cinfo, 0, sizeof(cinfo)); + memset(&jerr, 0, sizeof(jerr)); + memset(&src, 0, sizeof(src)); +} + +CCodec_JpegDecoder::~CCodec_JpegDecoder() { + if (m_bInited) + jpeg_destroy_decompress(&cinfo); +} + +bool CCodec_JpegDecoder::InitDecode() { + cinfo.err = &jerr; + cinfo.client_data = &m_JmpBuf; + if (setjmp(m_JmpBuf) == -1) + return false; + + jpeg_create_decompress(&cinfo); + m_bInited = true; + cinfo.src = &src; + src.bytes_in_buffer = m_SrcSpan.size(); + src.next_input_byte = m_SrcSpan.data(); + if (setjmp(m_JmpBuf) == -1) { + jpeg_destroy_decompress(&cinfo); + m_bInited = false; + return false; + } + cinfo.image_width = m_OrigWidth; + cinfo.image_height = m_OrigHeight; + int ret = jpeg_read_header(&cinfo, true); + if (ret != JPEG_HEADER_OK) + return false; + + if (cinfo.saw_Adobe_marker) + m_bJpegTransform = true; + + if (cinfo.num_components == 3 && !m_bJpegTransform) + cinfo.out_color_space = cinfo.jpeg_color_space; + + m_OrigWidth = cinfo.image_width; + m_OrigHeight = cinfo.image_height; + m_OutputWidth = m_OrigWidth; + m_OutputHeight = m_OrigHeight; + m_nDefaultScaleDenom = cinfo.scale_denom; + return true; +} + +bool CCodec_JpegDecoder::Create(pdfium::span<const uint8_t> src_span, + int width, + int height, + int nComps, + bool ColorTransform) { + m_SrcSpan = JpegScanSOI(src_span); + jerr.error_exit = _error_fatal; + jerr.emit_message = _error_do_nothing1; + jerr.output_message = _error_do_nothing; + jerr.format_message = _error_do_nothing2; + jerr.reset_error_mgr = _error_do_nothing; + src.init_source = _src_do_nothing; + src.term_source = _src_do_nothing; + src.skip_input_data = _src_skip_data; + src.fill_input_buffer = _src_fill_buffer; + src.resync_to_restart = _src_resync; + m_bJpegTransform = ColorTransform; + if (m_SrcSpan.size() >= 2) { + const_cast<uint8_t*>(m_SrcSpan.data())[m_SrcSpan.size() - 2] = 0xFF; + const_cast<uint8_t*>(m_SrcSpan.data())[m_SrcSpan.size() - 1] = 0xD9; + } + m_OutputWidth = m_OrigWidth = width; + m_OutputHeight = m_OrigHeight = height; + if (!InitDecode()) + return false; + + if (cinfo.num_components < nComps) + return false; + + if ((int)cinfo.image_width < width) + return false; + + m_Pitch = + (static_cast<uint32_t>(cinfo.image_width) * cinfo.num_components + 3) / + 4 * 4; + m_pScanlineBuf.reset(FX_Alloc(uint8_t, m_Pitch)); + m_nComps = cinfo.num_components; + m_bpc = 8; + m_bStarted = false; + return true; +} + +bool CCodec_JpegDecoder::v_Rewind() { + if (m_bStarted) { + jpeg_destroy_decompress(&cinfo); + if (!InitDecode()) { + return false; + } + } + if (setjmp(m_JmpBuf) == -1) { + return false; + } + cinfo.scale_denom = m_nDefaultScaleDenom; + m_OutputWidth = m_OrigWidth; + m_OutputHeight = m_OrigHeight; + if (!jpeg_start_decompress(&cinfo)) { + jpeg_destroy_decompress(&cinfo); + return false; + } + if ((int)cinfo.output_width > m_OrigWidth) { + NOTREACHED(); + return false; + } + m_bStarted = true; + return true; +} + +uint8_t* CCodec_JpegDecoder::v_GetNextLine() { + if (setjmp(m_JmpBuf) == -1) + return nullptr; + + uint8_t* row_array[] = {m_pScanlineBuf.get()}; + int nlines = jpeg_read_scanlines(&cinfo, row_array, 1); + return nlines > 0 ? m_pScanlineBuf.get() : nullptr; +} + +uint32_t CCodec_JpegDecoder::GetSrcOffset() { + return static_cast<uint32_t>(m_SrcSpan.size() - src.bytes_in_buffer); +} + +std::unique_ptr<CCodec_ScanlineDecoder> CCodec_JpegModule::CreateDecoder( + pdfium::span<const uint8_t> src_span, + int width, + int height, + int nComps, + bool ColorTransform) { + if (src_span.empty()) + return nullptr; + + auto pDecoder = pdfium::MakeUnique<CCodec_JpegDecoder>(); + if (!pDecoder->Create(src_span, width, height, nComps, ColorTransform)) + return nullptr; + + return std::move(pDecoder); +} + +bool CCodec_JpegModule::LoadInfo(pdfium::span<const uint8_t> src_span, + int* width, + int* height, + int* num_components, + int* bits_per_components, + bool* color_transform) { + return JpegLoadInfo(src_span, width, height, num_components, + bits_per_components, color_transform); +} + +extern "C" { + +static void _error_fatal1(j_common_ptr cinfo) { + auto* pContext = reinterpret_cast<CJpegContext*>(cinfo->client_data); + longjmp(pContext->m_JumpMark, -1); +} + +static void _src_skip_data1(struct jpeg_decompress_struct* cinfo, long num) { + if (cinfo->src->bytes_in_buffer < static_cast<size_t>(num)) { + auto* pContext = reinterpret_cast<CJpegContext*>(cinfo->client_data); + pContext->m_SkipSize = (unsigned int)(num - cinfo->src->bytes_in_buffer); + cinfo->src->bytes_in_buffer = 0; + } else { + cinfo->src->next_input_byte += num; + cinfo->src->bytes_in_buffer -= num; + } +} + +static void* jpeg_alloc_func(unsigned int size) { + return FX_Alloc(char, size); +} + +static void jpeg_free_func(void* p) { + FX_Free(p); +} + +} // extern "C" + +CJpegContext::CJpegContext() + : m_SkipSize(0), m_AllocFunc(jpeg_alloc_func), m_FreeFunc(jpeg_free_func) { + memset(&m_Info, 0, sizeof(m_Info)); + m_Info.client_data = this; + m_Info.err = &m_ErrMgr; + + memset(&m_ErrMgr, 0, sizeof(m_ErrMgr)); + m_ErrMgr.error_exit = _error_fatal1; + m_ErrMgr.emit_message = _error_do_nothing1; + m_ErrMgr.output_message = _error_do_nothing; + m_ErrMgr.format_message = _error_do_nothing2; + m_ErrMgr.reset_error_mgr = _error_do_nothing; + + memset(&m_SrcMgr, 0, sizeof(m_SrcMgr)); + m_SrcMgr.init_source = _src_do_nothing; + m_SrcMgr.term_source = _src_do_nothing; + m_SrcMgr.skip_input_data = _src_skip_data1; + m_SrcMgr.fill_input_buffer = _src_fill_buffer; + m_SrcMgr.resync_to_restart = _src_resync; +} + +CJpegContext::~CJpegContext() { + jpeg_destroy_decompress(&m_Info); +} + +std::unique_ptr<CCodec_JpegModule::Context> CCodec_JpegModule::Start() { + // Use ordinary pointer until past the possibility of a longjump. + auto* pContext = new CJpegContext(); + if (setjmp(pContext->m_JumpMark) == -1) { + delete pContext; + return nullptr; + } + + jpeg_create_decompress(&pContext->m_Info); + pContext->m_Info.src = &pContext->m_SrcMgr; + pContext->m_SkipSize = 0; + return pdfium::WrapUnique(pContext); +} + +void CCodec_JpegModule::Input(Context* pContext, + const unsigned char* src_buf, + uint32_t src_size) { + auto* ctx = static_cast<CJpegContext*>(pContext); + if (ctx->m_SkipSize) { + if (ctx->m_SkipSize > src_size) { + ctx->m_SrcMgr.bytes_in_buffer = 0; + ctx->m_SkipSize -= src_size; + return; + } + src_size -= ctx->m_SkipSize; + src_buf += ctx->m_SkipSize; + ctx->m_SkipSize = 0; + } + ctx->m_SrcMgr.next_input_byte = src_buf; + ctx->m_SrcMgr.bytes_in_buffer = src_size; +} + +#ifdef PDF_ENABLE_XFA +int CCodec_JpegModule::ReadHeader(Context* pContext, + int* width, + int* height, + int* nComps, + CFX_DIBAttribute* pAttribute) { + auto* ctx = static_cast<CJpegContext*>(pContext); + int ret = jpeg_read_header(&ctx->m_Info, true); + if (ret == JPEG_SUSPENDED) + return 2; + if (ret != JPEG_HEADER_OK) + return 1; + + *width = ctx->m_Info.image_width; + *height = ctx->m_Info.image_height; + *nComps = ctx->m_Info.num_components; + JpegLoadAttribute(&ctx->m_Info, pAttribute); + return 0; +} +#endif // PDF_ENABLE_XFA + +bool CCodec_JpegModule::StartScanline(Context* pContext, int down_scale) { + auto* ctx = static_cast<CJpegContext*>(pContext); + ctx->m_Info.scale_denom = static_cast<unsigned int>(down_scale); + return !!jpeg_start_decompress(&ctx->m_Info); +} + +bool CCodec_JpegModule::ReadScanline(Context* pContext, + unsigned char* dest_buf) { + auto* ctx = static_cast<CJpegContext*>(pContext); + unsigned int nlines = jpeg_read_scanlines(&ctx->m_Info, &dest_buf, 1); + return nlines == 1; +} + +uint32_t CCodec_JpegModule::GetAvailInput(Context* pContext, + uint8_t** avail_buf_ptr) { + auto* ctx = static_cast<CJpegContext*>(pContext); + if (avail_buf_ptr) { + *avail_buf_ptr = nullptr; + if (ctx->m_SrcMgr.bytes_in_buffer > 0) { + *avail_buf_ptr = (uint8_t*)ctx->m_SrcMgr.next_input_byte; + } + } + return (uint32_t)ctx->m_SrcMgr.bytes_in_buffer; +} + +#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ +#define JPEG_BLOCK_SIZE 1048576 +bool CCodec_JpegModule::JpegEncode(const RetainPtr<CFX_DIBBase>& pSource, + uint8_t** dest_buf, + size_t* dest_size) { + struct jpeg_error_mgr jerr; + jerr.error_exit = _error_do_nothing; + jerr.emit_message = _error_do_nothing1; + jerr.output_message = _error_do_nothing; + jerr.format_message = _error_do_nothing2; + jerr.reset_error_mgr = _error_do_nothing; + + struct jpeg_compress_struct cinfo; + memset(&cinfo, 0, sizeof(cinfo)); + cinfo.err = &jerr; + jpeg_create_compress(&cinfo); + int Bpp = pSource->GetBPP() / 8; + uint32_t nComponents = Bpp >= 3 ? (pSource->IsCmykImage() ? 4 : 3) : 1; + uint32_t pitch = pSource->GetPitch(); + uint32_t width = pdfium::base::checked_cast<uint32_t>(pSource->GetWidth()); + uint32_t height = pdfium::base::checked_cast<uint32_t>(pSource->GetHeight()); + FX_SAFE_UINT32 safe_buf_len = width; + safe_buf_len *= height; + safe_buf_len *= nComponents; + safe_buf_len += 1024; + if (!safe_buf_len.IsValid()) + return false; + + uint32_t dest_buf_length = safe_buf_len.ValueOrDie(); + *dest_buf = FX_TryAlloc(uint8_t, dest_buf_length); + const int MIN_TRY_BUF_LEN = 1024; + while (!(*dest_buf) && dest_buf_length > MIN_TRY_BUF_LEN) { + dest_buf_length >>= 1; + *dest_buf = FX_TryAlloc(uint8_t, dest_buf_length); + } + if (!(*dest_buf)) + return false; + + struct jpeg_destination_mgr dest; + dest.init_destination = _dest_do_nothing; + dest.term_destination = _dest_do_nothing; + dest.empty_output_buffer = _dest_empty; + dest.next_output_byte = *dest_buf; + dest.free_in_buffer = dest_buf_length; + cinfo.dest = &dest; + cinfo.image_width = width; + cinfo.image_height = height; + cinfo.input_components = nComponents; + if (nComponents == 1) { + cinfo.in_color_space = JCS_GRAYSCALE; + } else if (nComponents == 3) { + cinfo.in_color_space = JCS_RGB; + } else { + cinfo.in_color_space = JCS_CMYK; + } + uint8_t* line_buf = nullptr; + if (nComponents > 1) + line_buf = FX_Alloc2D(uint8_t, width, nComponents); + + jpeg_set_defaults(&cinfo); + jpeg_start_compress(&cinfo, TRUE); + JSAMPROW row_pointer[1]; + JDIMENSION row; + while (cinfo.next_scanline < cinfo.image_height) { + const uint8_t* src_scan = pSource->GetScanline(cinfo.next_scanline); + if (nComponents > 1) { + uint8_t* dest_scan = line_buf; + if (nComponents == 3) { + for (uint32_t i = 0; i < width; i++) { + dest_scan[0] = src_scan[2]; + dest_scan[1] = src_scan[1]; + dest_scan[2] = src_scan[0]; + dest_scan += 3; + src_scan += Bpp; + } + } else { + for (uint32_t i = 0; i < pitch; i++) { + *dest_scan++ = ~*src_scan++; + } + } + row_pointer[0] = line_buf; + } else { + row_pointer[0] = (uint8_t*)src_scan; + } + row = cinfo.next_scanline; + jpeg_write_scanlines(&cinfo, row_pointer, 1); + if (cinfo.next_scanline == row) { + *dest_buf = + FX_Realloc(uint8_t, *dest_buf, dest_buf_length + JPEG_BLOCK_SIZE); + dest.next_output_byte = *dest_buf + dest_buf_length - dest.free_in_buffer; + dest_buf_length += JPEG_BLOCK_SIZE; + dest.free_in_buffer += JPEG_BLOCK_SIZE; + } + } + jpeg_finish_compress(&cinfo); + jpeg_destroy_compress(&cinfo); + FX_Free(line_buf); + *dest_size = dest_buf_length - static_cast<size_t>(dest.free_in_buffer); + + return true; +} +#endif // _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_ |