diff options
Diffstat (limited to 'core/src/fxcodec/codec/fx_codec_jpeg.cpp')
| -rw-r--r-- | core/src/fxcodec/codec/fx_codec_jpeg.cpp | 229 |
1 files changed, 26 insertions, 203 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp index 043964f254..820a5c7004 100644 --- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp +++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp @@ -74,171 +74,17 @@ static void _error_do_nothing1(j_common_ptr cinfo, int) {} extern "C" { static void _error_do_nothing2(j_common_ptr cinfo, char*) {} }; -#define JPEG_MARKER_EXIF (JPEG_APP0 + 1) + #define JPEG_MARKER_ICC (JPEG_APP0 + 2) -#define JPEG_MARKER_AUTHORTIME (JPEG_APP0 + 3) #define JPEG_MARKER_MAXSIZE 0xFFFF -#define JPEG_OVERHEAD_LEN 14 -static FX_BOOL _JpegEmbedIccProfile(j_compress_ptr cinfo, - const uint8_t* icc_buf_ptr, - FX_DWORD icc_length) { - if (!icc_buf_ptr || icc_length == 0) { - return FALSE; - } - FX_DWORD icc_segment_size = (JPEG_MARKER_MAXSIZE - 2 - JPEG_OVERHEAD_LEN); - FX_DWORD icc_segment_num = (icc_length / icc_segment_size) + 1; - if (icc_segment_num > 255) { - return FALSE; - } - FX_DWORD icc_data_length = - JPEG_OVERHEAD_LEN + (icc_segment_num > 1 ? icc_segment_size : icc_length); - uint8_t* icc_data = FX_Alloc(uint8_t, icc_data_length); - FXSYS_memcpy(icc_data, "\x49\x43\x43\x5f\x50\x52\x4f\x46\x49\x4c\x45\x00", - 12); - icc_data[13] = (uint8_t)icc_segment_num; - for (uint8_t i = 0; i < (icc_segment_num - 1); i++) { - icc_data[12] = i + 1; - FXSYS_memcpy(icc_data + JPEG_OVERHEAD_LEN, - icc_buf_ptr + i * icc_segment_size, icc_segment_size); - jpeg_write_marker(cinfo, JPEG_MARKER_ICC, icc_data, icc_data_length); - } - icc_data[12] = (uint8_t)icc_segment_num; - FX_DWORD icc_size = (icc_segment_num - 1) * icc_segment_size; - FXSYS_memcpy(icc_data + JPEG_OVERHEAD_LEN, icc_buf_ptr + icc_size, - icc_length - icc_size); - jpeg_write_marker(cinfo, JPEG_MARKER_ICC, icc_data, - JPEG_OVERHEAD_LEN + icc_length - icc_size); - FX_Free(icc_data); - return TRUE; -} -extern "C" { -static void _dest_do_nothing(j_compress_ptr cinfo) {} -}; -extern "C" { -static boolean _dest_empty(j_compress_ptr cinfo) { - return FALSE; -} -}; -#define JPEG_BLOCK_SIZE 1048576 -static void _JpegEncode(const CFX_DIBSource* pSource, - uint8_t*& dest_buf, - FX_STRSIZE& dest_size, - int quality, - const uint8_t* icc_buf, - FX_DWORD icc_length) { - 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; - FX_DWORD nComponents = Bpp >= 3 ? (pSource->IsCmykImage() ? 4 : 3) : 1; - FX_DWORD pitch = pSource->GetPitch(); - FX_DWORD width = pdfium::base::checked_cast<FX_DWORD>(pSource->GetWidth()); - FX_DWORD height = pdfium::base::checked_cast<FX_DWORD>(pSource->GetHeight()); - FX_SAFE_DWORD safe_buf_len = width; - safe_buf_len *= height; - safe_buf_len *= nComponents; - safe_buf_len += 1024; - if (icc_length) { - safe_buf_len += 255 * 18; - safe_buf_len += icc_length; - } - FX_DWORD dest_buf_length = 0; - if (!safe_buf_len.IsValid()) { - dest_buf = nullptr; - } else { - 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) { - FX_OutOfMemoryTerminate(); - } - 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 = NULL; - if (nComponents > 1) { - line_buf = FX_Alloc2D(uint8_t, width, nComponents); - } - jpeg_set_defaults(&cinfo); - if (quality != 75) { - jpeg_set_quality(&cinfo, quality, TRUE); - } - jpeg_start_compress(&cinfo, TRUE); - _JpegEmbedIccProfile(&cinfo, icc_buf, icc_length); - 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 (FX_DWORD 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 (FX_DWORD 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 - (FX_STRSIZE)dest.free_in_buffer; -} -static FX_BOOL _JpegLoadInfo(const uint8_t* src_buf, - FX_DWORD src_size, - int& width, - int& height, - int& num_components, - int& bits_per_components, - FX_BOOL& color_transform, - uint8_t** icc_buf_ptr, - FX_DWORD* icc_length) { +static bool JpegLoadInfo(const uint8_t* src_buf, + FX_DWORD 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; @@ -252,7 +98,7 @@ static FX_BOOL _JpegLoadInfo(const uint8_t* src_buf, jmp_buf mark; cinfo.client_data = &mark; if (setjmp(mark) == -1) { - return FALSE; + return false; } jpeg_create_decompress(&cinfo); struct jpeg_source_mgr src; @@ -266,30 +112,21 @@ static FX_BOOL _JpegLoadInfo(const uint8_t* src_buf, cinfo.src = &src; if (setjmp(mark) == -1) { jpeg_destroy_decompress(&cinfo); - return FALSE; - } - if (icc_buf_ptr && icc_length) { - jpeg_save_markers(&cinfo, JPEG_MARKER_ICC, JPEG_MARKER_MAXSIZE); + return false; } int ret = jpeg_read_header(&cinfo, TRUE); if (ret != JPEG_HEADER_OK) { jpeg_destroy_decompress(&cinfo); - return FALSE; + return false; } - width = cinfo.image_width; - height = cinfo.image_height; - num_components = cinfo.num_components; - color_transform = + *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; - if (icc_buf_ptr) { - *icc_buf_ptr = NULL; - } - if (icc_length) { - *icc_length = 0; - } + *bits_per_components = cinfo.data_precision; jpeg_destroy_decompress(&cinfo); - return TRUE; + return true; } class CCodec_JpegDecoder : public CCodec_ScanlineDecoder { @@ -512,31 +349,17 @@ ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder( } return pDecoder; } -FX_BOOL CCodec_JpegModule::LoadInfo(const uint8_t* src_buf, - FX_DWORD src_size, - int& width, - int& height, - int& num_components, - int& bits_per_components, - FX_BOOL& color_transform, - uint8_t** icc_buf_ptr, - FX_DWORD* icc_length) { - return _JpegLoadInfo(src_buf, src_size, width, height, num_components, - bits_per_components, color_transform, icc_buf_ptr, - icc_length); +bool CCodec_JpegModule::LoadInfo(const uint8_t* src_buf, + FX_DWORD 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); } -FX_BOOL CCodec_JpegModule::Encode(const CFX_DIBSource* pSource, - uint8_t*& dest_buf, - FX_STRSIZE& dest_size, - int quality, - const uint8_t* icc_buf, - FX_DWORD icc_length) { - if (pSource->GetBPP() < 8 || pSource->GetPalette()) - return FALSE; - _JpegEncode(pSource, dest_buf, dest_size, quality, icc_buf, icc_length); - return TRUE; -} struct FXJPEG_Context { jmp_buf m_JumpMark; jpeg_decompress_struct m_Info; |