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author | Tom Sepez <tsepez@chromium.org> | 2018-08-28 22:25:49 +0000 |
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committer | Chromium commit bot <commit-bot@chromium.org> | 2018-08-28 22:25:49 +0000 |
commit | 126927eaec336153e3be43086deee672829395f1 (patch) | |
tree | 1d00d1ad571fcc412fac54433b4061d36b570beb /core/fxcodec/codec/fx_codec_jpeg.cpp | |
parent | 4d92af5ace491a2e87a6c73e5afa9ed53ac86bd0 (diff) | |
download | pdfium-126927eaec336153e3be43086deee672829395f1.tar.xz |
Use std::span<> in CCodec_JPEGModule
Also rename .cpp file to match class name and .h file.
Modify some helper functions to operate on spans.
Move some initializations to member declarations.
Change-Id: Ie0889bda91daaef80fae6f5681f8ce068e92453b
Reviewed-on: https://pdfium-review.googlesource.com/41534
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Diffstat (limited to 'core/fxcodec/codec/fx_codec_jpeg.cpp')
-rw-r--r-- | core/fxcodec/codec/fx_codec_jpeg.cpp | 595 |
1 files changed, 0 insertions, 595 deletions
diff --git a/core/fxcodec/codec/fx_codec_jpeg.cpp b/core/fxcodec/codec/fx_codec_jpeg.cpp deleted file mode 100644 index d8e94b0285..0000000000 --- a/core/fxcodec/codec/fx_codec_jpeg.cpp +++ /dev/null @@ -1,595 +0,0 @@ -// 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 <setjmp.h> - -#include <memory> -#include <utility> - -#include "core/fxcodec/codec/ccodec_jpegmodule.h" -#include "core/fxcodec/codec/ccodec_scanlinedecoder.h" -#include "core/fxcodec/fx_codec.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*); -}; - -extern "C" { - -static void JpegScanSOI(const uint8_t** src_buf, uint32_t* src_size) { - if (*src_size == 0) - return; - - uint32_t offset = 0; - while (offset < *src_size - 1) { - if ((*src_buf)[offset] == 0xff && (*src_buf)[offset + 1] == 0xd8) { - *src_buf += offset; - *src_size -= offset; - return; - } - offset++; - } -} - -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(const uint8_t* src_buf, - uint32_t src_size, - int* width, - int* height, - int* num_components, - int* bits_per_components, - bool* color_transform) { - JpegScanSOI(&src_buf, &src_size); - 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_size; - src.next_input_byte = src_buf; - 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(const uint8_t* src_buf, - uint32_t src_size, - 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; - const uint8_t* m_SrcBuf; - uint32_t m_SrcSize; - uint8_t* m_pScanlineBuf; - - bool m_bInited; - bool m_bStarted; - bool m_bJpegTransform; - - protected: - uint32_t m_nDefaultScaleDenom; -}; - -CCodec_JpegDecoder::CCodec_JpegDecoder() { - m_pScanlineBuf = nullptr; - m_bStarted = false; - m_bInited = false; - memset(&cinfo, 0, sizeof(cinfo)); - memset(&jerr, 0, sizeof(jerr)); - memset(&src, 0, sizeof(src)); - m_nDefaultScaleDenom = 1; -} - -CCodec_JpegDecoder::~CCodec_JpegDecoder() { - FX_Free(m_pScanlineBuf); - 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_SrcSize; - src.next_input_byte = m_SrcBuf; - 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(const uint8_t* src_buf, - uint32_t src_size, - int width, - int height, - int nComps, - bool ColorTransform) { - JpegScanSOI(&src_buf, &src_size); - m_SrcBuf = src_buf; - m_SrcSize = src_size; - 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 (src_size > 1 && memcmp(src_buf + src_size - 2, "\xFF\xD9", 2) != 0) { - ((uint8_t*)src_buf)[src_size - 2] = 0xFF; - ((uint8_t*)src_buf)[src_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 = 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; - - int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1); - return nlines > 0 ? m_pScanlineBuf : nullptr; -} - -uint32_t CCodec_JpegDecoder::GetSrcOffset() { - return (uint32_t)(m_SrcSize - src.bytes_in_buffer); -} - -std::unique_ptr<CCodec_ScanlineDecoder> CCodec_JpegModule::CreateDecoder( - const uint8_t* src_buf, - uint32_t src_size, - int width, - int height, - int nComps, - bool ColorTransform) { - if (!src_buf || src_size == 0) - return nullptr; - - auto pDecoder = pdfium::MakeUnique<CCodec_JpegDecoder>(); - if (!pDecoder->Create(src_buf, src_size, width, height, nComps, - ColorTransform)) { - return nullptr; - } - return std::move(pDecoder); -} - -bool CCodec_JpegModule::LoadInfo(const uint8_t* src_buf, - uint32_t src_size, - int* width, - int* height, - int* num_components, - int* bits_per_components, - bool* color_transform) { - return JpegLoadInfo(src_buf, src_size, 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_ |