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path: root/core/src/fxcodec/codec/fx_codec_jpeg.cpp
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Diffstat (limited to 'core/src/fxcodec/codec/fx_codec_jpeg.cpp')
-rw-r--r--core/src/fxcodec/codec/fx_codec_jpeg.cpp1249
1 files changed, 640 insertions, 609 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
index 6839d31509..681678c264 100644
--- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
@@ -17,664 +17,695 @@ extern "C" {
}
extern "C" {
- static void _JpegScanSOI(const uint8_t*& src_buf, FX_DWORD& src_size)
- {
- if (src_size == 0) {
- return;
- }
- FX_DWORD 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 _JpegScanSOI(const uint8_t*& src_buf, FX_DWORD& src_size) {
+ if (src_size == 0) {
+ return;
+ }
+ FX_DWORD 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++;
+ }
+}
};
extern "C" {
- static void _src_do_nothing(struct jpeg_decompress_struct* cinfo) {}
+static void _src_do_nothing(struct jpeg_decompress_struct* cinfo) {}
};
extern "C" {
- static void _error_fatal(j_common_ptr cinfo)
- {
- longjmp(*(jmp_buf*)cinfo->client_data, -1);
- }
+static void _error_fatal(j_common_ptr cinfo) {
+ longjmp(*(jmp_buf*)cinfo->client_data, -1);
+}
};
extern "C" {
- 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 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;
+}
};
extern "C" {
- static boolean _src_fill_buffer(j_decompress_ptr cinfo)
- {
- return 0;
- }
+static boolean _src_fill_buffer(j_decompress_ptr cinfo) {
+ return 0;
+}
};
extern "C" {
- static boolean _src_resync(j_decompress_ptr cinfo, int desired)
- {
- return 0;
- }
+static boolean _src_resync(j_decompress_ptr cinfo, int desired) {
+ return 0;
+}
};
extern "C" {
- static void _error_do_nothing(j_common_ptr cinfo) {}
+static void _error_do_nothing(j_common_ptr cinfo) {}
};
extern "C" {
- static void _error_do_nothing1(j_common_ptr cinfo, int) {}
+static void _error_do_nothing1(j_common_ptr cinfo, int) {}
};
extern "C" {
- static void _error_do_nothing2(j_common_ptr cinfo, char*) {}
+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 == NULL || 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;
+#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 == NULL || 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) {}
+static void _dest_do_nothing(j_compress_ptr cinfo) {}
};
extern "C" {
- static boolean _dest_empty(j_compress_ptr cinfo)
- {
- return FALSE;
- }
+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;
+#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;
+ 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) {
- 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 (int 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 (int i = 0; i < pitch; i ++) {
- *dest_scan++ = ~*src_scan++;
- }
- }
- row_pointer[0] = line_buf;
- } else {
- row_pointer[0] = (uint8_t*)src_scan;
+ uint8_t* dest_scan = line_buf;
+ if (nComponents == 3) {
+ for (int 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;
}
- 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;
+ } else {
+ for (int i = 0; i < pitch; i++) {
+ *dest_scan++ = ~*src_scan++;
}
- }
- jpeg_finish_compress(&cinfo);
- jpeg_destroy_compress(&cinfo);
- if (line_buf) {
- 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)
-{
- _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;
- }
- if(icc_buf_ptr && icc_length) {
- jpeg_save_markers(&cinfo, JPEG_MARKER_ICC, JPEG_MARKER_MAXSIZE);
- }
- 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;
- if(icc_buf_ptr != NULL) {
- *icc_buf_ptr = NULL;
- }
- if(icc_length != NULL) {
- *icc_length = 0;
- }
+ }
+ 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);
+ if (line_buf) {
+ 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) {
+ _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 TRUE;
-}
-class CCodec_JpegDecoder : public CCodec_ScanlineDecoder
-{
-public:
- CCodec_JpegDecoder();
- ~CCodec_JpegDecoder();
- FX_BOOL Create(const uint8_t* src_buf, FX_DWORD src_size, int width, int height, int nComps,
- FX_BOOL ColorTransform, IFX_JpegProvider* pJP);
- virtual void Destroy()
- {
- delete this;
- }
- virtual void v_DownScale(int dest_width, int dest_height);
- virtual FX_BOOL v_Rewind();
- virtual uint8_t* v_GetNextLine();
- virtual FX_DWORD GetSrcOffset();
- jmp_buf m_JmpBuf;
- struct jpeg_decompress_struct cinfo;
- struct jpeg_error_mgr jerr;
- struct jpeg_source_mgr src;
- const uint8_t* m_SrcBuf;
- FX_DWORD m_SrcSize;
- uint8_t* m_pScanlineBuf;
- FX_BOOL InitDecode();
- FX_BOOL m_bInited, m_bStarted, m_bJpegTransform;
-protected:
- IFX_JpegProvider* m_pExtProvider;
- void* m_pExtContext;
- FX_DWORD m_nDefaultScaleDenom;
+ return FALSE;
+ }
+ if (icc_buf_ptr && icc_length) {
+ jpeg_save_markers(&cinfo, JPEG_MARKER_ICC, JPEG_MARKER_MAXSIZE);
+ }
+ 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;
+ if (icc_buf_ptr != NULL) {
+ *icc_buf_ptr = NULL;
+ }
+ if (icc_length != NULL) {
+ *icc_length = 0;
+ }
+ jpeg_destroy_decompress(&cinfo);
+ return TRUE;
+}
+class CCodec_JpegDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_JpegDecoder();
+ ~CCodec_JpegDecoder();
+ FX_BOOL Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform,
+ IFX_JpegProvider* pJP);
+ virtual void Destroy() { delete this; }
+ virtual void v_DownScale(int dest_width, int dest_height);
+ virtual FX_BOOL v_Rewind();
+ virtual uint8_t* v_GetNextLine();
+ virtual FX_DWORD GetSrcOffset();
+ jmp_buf m_JmpBuf;
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ struct jpeg_source_mgr src;
+ const uint8_t* m_SrcBuf;
+ FX_DWORD m_SrcSize;
+ uint8_t* m_pScanlineBuf;
+ FX_BOOL InitDecode();
+ FX_BOOL m_bInited, m_bStarted, m_bJpegTransform;
+
+ protected:
+ IFX_JpegProvider* m_pExtProvider;
+ void* m_pExtContext;
+ FX_DWORD m_nDefaultScaleDenom;
};
-CCodec_JpegDecoder::CCodec_JpegDecoder()
-{
- m_pScanlineBuf = NULL;
- m_DownScale = 1;
- m_bStarted = FALSE;
+CCodec_JpegDecoder::CCodec_JpegDecoder() {
+ m_pScanlineBuf = NULL;
+ m_DownScale = 1;
+ m_bStarted = FALSE;
+ m_bInited = FALSE;
+ m_pExtProvider = NULL;
+ m_pExtContext = NULL;
+ FXSYS_memset(&cinfo, 0, sizeof(cinfo));
+ FXSYS_memset(&jerr, 0, sizeof(jerr));
+ FXSYS_memset(&src, 0, sizeof(src));
+ m_nDefaultScaleDenom = 1;
+}
+CCodec_JpegDecoder::~CCodec_JpegDecoder() {
+ if (m_pExtProvider) {
+ m_pExtProvider->DestroyDecoder(m_pExtContext);
+ return;
+ }
+ if (m_pScanlineBuf) {
+ FX_Free(m_pScanlineBuf);
+ }
+ if (m_bInited) {
+ jpeg_destroy_decompress(&cinfo);
+ }
+}
+FX_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;
- m_pExtProvider = NULL;
- m_pExtContext = NULL;
- FXSYS_memset(&cinfo, 0, sizeof(cinfo));
- FXSYS_memset(&jerr, 0, sizeof(jerr));
- FXSYS_memset(&src, 0, sizeof(src));
- m_nDefaultScaleDenom = 1;
-}
-CCodec_JpegDecoder::~CCodec_JpegDecoder()
-{
- if (m_pExtProvider) {
- m_pExtProvider->DestroyDecoder(m_pExtContext);
- return;
- }
- if (m_pScanlineBuf) {
- FX_Free(m_pScanlineBuf);
- }
- if (m_bInited) {
- jpeg_destroy_decompress(&cinfo);
- }
+ 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;
}
-FX_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;
-}
-FX_BOOL CCodec_JpegDecoder::Create(const uint8_t* src_buf, FX_DWORD src_size, int width, int height,
- int nComps, FX_BOOL ColorTransform, IFX_JpegProvider* pJP)
-{
- if (pJP) {
- m_pExtProvider = pJP;
- m_pExtContext = m_pExtProvider->CreateDecoder(src_buf, src_size, width, height, nComps, ColorTransform);
- return m_pExtContext != NULL;
- }
- _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 && FXSYS_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 = (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_bColorTransformed = FALSE;
- m_bStarted = FALSE;
- return TRUE;
+FX_BOOL CCodec_JpegDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform,
+ IFX_JpegProvider* pJP) {
+ if (pJP) {
+ m_pExtProvider = pJP;
+ m_pExtContext = m_pExtProvider->CreateDecoder(
+ src_buf, src_size, width, height, nComps, ColorTransform);
+ return m_pExtContext != NULL;
+ }
+ _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 &&
+ FXSYS_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 = (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_bColorTransformed = FALSE;
+ m_bStarted = FALSE;
+ return TRUE;
}
extern "C" {
- int32_t FX_GetDownsampleRatio(int32_t originWidth, int32_t originHeight, int32_t downsampleWidth, int32_t downsampleHeight)
- {
- int iratio_w = originWidth / downsampleWidth;
- int iratio_h = originHeight / downsampleHeight;
- int ratio = (iratio_w > iratio_h) ? iratio_h : iratio_w;
- if (ratio >= 8) {
- return 8;
- }
- if (ratio >= 4) {
- return 4;
- }
- if (ratio >= 2) {
- return 2;
- }
- return 1;
- }
+int32_t FX_GetDownsampleRatio(int32_t originWidth,
+ int32_t originHeight,
+ int32_t downsampleWidth,
+ int32_t downsampleHeight) {
+ int iratio_w = originWidth / downsampleWidth;
+ int iratio_h = originHeight / downsampleHeight;
+ int ratio = (iratio_w > iratio_h) ? iratio_h : iratio_w;
+ if (ratio >= 8) {
+ return 8;
+ }
+ if (ratio >= 4) {
+ return 4;
+ }
+ if (ratio >= 2) {
+ return 2;
+ }
+ return 1;
}
-void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height)
-{
- if (m_pExtProvider) {
- m_pExtProvider->DownScale(m_pExtContext, dest_width, dest_height);
- return;
- }
- int old_scale = m_DownScale;
- m_DownScale = FX_GetDownsampleRatio(m_OrigWidth, m_OrigHeight, dest_width, dest_height);
- m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
- m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
- m_Pitch = (m_OutputWidth * m_nComps + 3) / 4 * 4;
- if (old_scale != m_DownScale) {
- m_NextLine = -1;
- }
}
-FX_BOOL CCodec_JpegDecoder::v_Rewind()
-{
- if (m_pExtProvider) {
- return m_pExtProvider->Rewind(m_pExtContext);
- }
- if (m_bStarted) {
- jpeg_destroy_decompress(&cinfo);
- if (!InitDecode()) {
- return FALSE;
- }
- }
- if (setjmp(m_JmpBuf) == -1) {
- return FALSE;
- }
- cinfo.scale_denom = m_nDefaultScaleDenom * m_DownScale;
- m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
- m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
- if (!jpeg_start_decompress(&cinfo)) {
- jpeg_destroy_decompress(&cinfo);
- return FALSE;
- }
- if ((int)cinfo.output_width > m_OrigWidth) {
- FXSYS_assert(FALSE);
- return FALSE;
- }
- m_bStarted = TRUE;
- return TRUE;
+void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height) {
+ if (m_pExtProvider) {
+ m_pExtProvider->DownScale(m_pExtContext, dest_width, dest_height);
+ return;
+ }
+ int old_scale = m_DownScale;
+ m_DownScale =
+ FX_GetDownsampleRatio(m_OrigWidth, m_OrigHeight, dest_width, dest_height);
+ m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
+ m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
+ m_Pitch = (m_OutputWidth * m_nComps + 3) / 4 * 4;
+ if (old_scale != m_DownScale) {
+ m_NextLine = -1;
+ }
}
-uint8_t* CCodec_JpegDecoder::v_GetNextLine()
-{
- if (m_pExtProvider) {
- return m_pExtProvider->GetNextLine(m_pExtContext);
- }
- int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1);
- if (nlines < 1) {
- return NULL;
- }
- return m_pScanlineBuf;
+FX_BOOL CCodec_JpegDecoder::v_Rewind() {
+ if (m_pExtProvider) {
+ return m_pExtProvider->Rewind(m_pExtContext);
+ }
+ if (m_bStarted) {
+ jpeg_destroy_decompress(&cinfo);
+ if (!InitDecode()) {
+ return FALSE;
+ }
+ }
+ if (setjmp(m_JmpBuf) == -1) {
+ return FALSE;
+ }
+ cinfo.scale_denom = m_nDefaultScaleDenom * m_DownScale;
+ m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
+ m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
+ if (!jpeg_start_decompress(&cinfo)) {
+ jpeg_destroy_decompress(&cinfo);
+ return FALSE;
+ }
+ if ((int)cinfo.output_width > m_OrigWidth) {
+ FXSYS_assert(FALSE);
+ return FALSE;
+ }
+ m_bStarted = TRUE;
+ return TRUE;
}
-FX_DWORD CCodec_JpegDecoder::GetSrcOffset()
-{
- if (m_pExtProvider) {
- return m_pExtProvider->GetSrcOffset(m_pExtContext);
- }
- return (FX_DWORD)(m_SrcSize - src.bytes_in_buffer);
+uint8_t* CCodec_JpegDecoder::v_GetNextLine() {
+ if (m_pExtProvider) {
+ return m_pExtProvider->GetNextLine(m_pExtContext);
+ }
+ int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1);
+ if (nlines < 1) {
+ return NULL;
+ }
+ return m_pScanlineBuf;
}
-ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(const uint8_t* src_buf, FX_DWORD src_size,
- int width, int height, int nComps, FX_BOOL ColorTransform)
-{
- if (src_buf == NULL || src_size == 0) {
- return NULL;
- }
- CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
- if (!pDecoder->Create(src_buf, src_size, width, height, nComps, ColorTransform, m_pExtProvider)) {
- delete pDecoder;
- return NULL;
- }
- 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)
-{
- if (m_pExtProvider) {
- return m_pExtProvider->LoadInfo(src_buf, src_size, width, height,
- num_components, bits_per_components, color_transform,
- icc_buf_ptr, icc_length);
- }
- return _JpegLoadInfo(src_buf, src_size, width, height, num_components, bits_per_components, color_transform, icc_buf_ptr, icc_length);
+FX_DWORD CCodec_JpegDecoder::GetSrcOffset() {
+ if (m_pExtProvider) {
+ return m_pExtProvider->GetSrcOffset(m_pExtContext);
+ }
+ return (FX_DWORD)(m_SrcSize - src.bytes_in_buffer);
}
-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 (m_pExtProvider) {
- return m_pExtProvider->Encode(pSource, dest_buf, dest_size, quality, icc_buf, icc_length);
- }
- if(pSource->GetBPP() < 8 || pSource->GetPalette() != NULL) {
- ASSERT(pSource->GetBPP() >= 8 && pSource->GetPalette() == NULL);
- return FALSE;
- }
- _JpegEncode(pSource, dest_buf, dest_size, quality, icc_buf, icc_length);
- return TRUE;
+ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ FX_BOOL ColorTransform) {
+ if (src_buf == NULL || src_size == 0) {
+ return NULL;
+ }
+ CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
+ if (!pDecoder->Create(src_buf, src_size, width, height, nComps,
+ ColorTransform, m_pExtProvider)) {
+ delete pDecoder;
+ return NULL;
+ }
+ 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) {
+ if (m_pExtProvider) {
+ return m_pExtProvider->LoadInfo(src_buf, src_size, width, height,
+ num_components, bits_per_components,
+ color_transform, icc_buf_ptr, icc_length);
+ }
+ return _JpegLoadInfo(src_buf, src_size, width, height, num_components,
+ bits_per_components, color_transform, icc_buf_ptr,
+ icc_length);
+}
+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 (m_pExtProvider) {
+ return m_pExtProvider->Encode(pSource, dest_buf, dest_size, quality,
+ icc_buf, icc_length);
+ }
+ if (pSource->GetBPP() < 8 || pSource->GetPalette() != NULL) {
+ ASSERT(pSource->GetBPP() >= 8 && pSource->GetPalette() == NULL);
+ 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;
- jpeg_error_mgr m_ErrMgr;
- jpeg_source_mgr m_SrcMgr;
- unsigned int m_SkipSize;
- void* (*m_AllocFunc)(unsigned int);
- void (*m_FreeFunc)(void*);
+ 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 _error_fatal1(j_common_ptr cinfo)
- {
- longjmp(((FXJPEG_Context*)cinfo->client_data)->m_JumpMark, -1);
- }
+static void _error_fatal1(j_common_ptr cinfo) {
+ longjmp(((FXJPEG_Context*)cinfo->client_data)->m_JumpMark, -1);
+}
};
extern "C" {
- static void _src_skip_data1(struct jpeg_decompress_struct* cinfo, long num)
- {
- if (cinfo->src->bytes_in_buffer < (size_t)num) {
- ((FXJPEG_Context*)cinfo->client_data)->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 _src_skip_data1(struct jpeg_decompress_struct* cinfo, long num) {
+ if (cinfo->src->bytes_in_buffer < (size_t)num) {
+ ((FXJPEG_Context*)cinfo->client_data)->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);
-}
-void* CCodec_JpegModule::Start()
-{
- if (m_pExtProvider) {
- return m_pExtProvider->Start();
- }
- FXJPEG_Context* p = (FXJPEG_Context*)FX_Alloc(uint8_t, sizeof(FXJPEG_Context));
- p->m_AllocFunc = jpeg_alloc_func;
- p->m_FreeFunc = jpeg_free_func;
- p->m_ErrMgr.error_exit = _error_fatal1;
- p->m_ErrMgr.emit_message = _error_do_nothing1;
- p->m_ErrMgr.output_message = _error_do_nothing;
- p->m_ErrMgr.format_message = _error_do_nothing2;
- p->m_ErrMgr.reset_error_mgr = _error_do_nothing;
- p->m_SrcMgr.init_source = _src_do_nothing;
- p->m_SrcMgr.term_source = _src_do_nothing;
- p->m_SrcMgr.skip_input_data = _src_skip_data1;
- p->m_SrcMgr.fill_input_buffer = _src_fill_buffer;
- p->m_SrcMgr.resync_to_restart = _src_resync;
- p->m_Info.client_data = p;
- p->m_Info.err = &p->m_ErrMgr;
- if (setjmp(p->m_JumpMark) == -1) {
- return 0;
- }
- jpeg_create_decompress(&p->m_Info);
- p->m_Info.src = &p->m_SrcMgr;
- p->m_SkipSize = 0;
- return p;
+static void* jpeg_alloc_func(unsigned int size) {
+ return FX_Alloc(char, size);
}
-void CCodec_JpegModule::Finish(void* pContext)
-{
- if (m_pExtProvider) {
- m_pExtProvider->Finish(pContext);
- return;
- }
- FXJPEG_Context* p = (FXJPEG_Context*)pContext;
- jpeg_destroy_decompress(&p->m_Info);
- p->m_FreeFunc(p);
-}
-void CCodec_JpegModule::Input(void* pContext, const unsigned char* src_buf, FX_DWORD src_size)
-{
- if (m_pExtProvider) {
- m_pExtProvider->Input(pContext, src_buf, src_size);
- return;
- }
- FXJPEG_Context* p = (FXJPEG_Context*)pContext;
- if (p->m_SkipSize) {
- if (p->m_SkipSize > src_size) {
- p->m_SrcMgr.bytes_in_buffer = 0;
- p->m_SkipSize -= src_size;
- return;
- }
- src_size -= p->m_SkipSize;
- src_buf += p->m_SkipSize;
- p->m_SkipSize = 0;
- }
- p->m_SrcMgr.next_input_byte = src_buf;
- p->m_SrcMgr.bytes_in_buffer = src_size;
+static void jpeg_free_func(void* p) {
+ FX_Free(p);
}
-int CCodec_JpegModule::ReadHeader(void* pContext, int* width, int* height, int* nComps)
-{
- if (m_pExtProvider) {
- return m_pExtProvider->ReadHeader(pContext, width, height, nComps);
- }
- FXJPEG_Context* p = (FXJPEG_Context*)pContext;
- if (setjmp(p->m_JumpMark) == -1) {
- return 1;
- }
- int ret = jpeg_read_header(&p->m_Info, true);
- if (ret == JPEG_SUSPENDED) {
- return 2;
- }
- if (ret != JPEG_HEADER_OK) {
- return 1;
- }
- *width = p->m_Info.image_width;
- *height = p->m_Info.image_height;
- *nComps = p->m_Info.num_components;
+void* CCodec_JpegModule::Start() {
+ if (m_pExtProvider) {
+ return m_pExtProvider->Start();
+ }
+ FXJPEG_Context* p =
+ (FXJPEG_Context*)FX_Alloc(uint8_t, sizeof(FXJPEG_Context));
+ p->m_AllocFunc = jpeg_alloc_func;
+ p->m_FreeFunc = jpeg_free_func;
+ p->m_ErrMgr.error_exit = _error_fatal1;
+ p->m_ErrMgr.emit_message = _error_do_nothing1;
+ p->m_ErrMgr.output_message = _error_do_nothing;
+ p->m_ErrMgr.format_message = _error_do_nothing2;
+ p->m_ErrMgr.reset_error_mgr = _error_do_nothing;
+ p->m_SrcMgr.init_source = _src_do_nothing;
+ p->m_SrcMgr.term_source = _src_do_nothing;
+ p->m_SrcMgr.skip_input_data = _src_skip_data1;
+ p->m_SrcMgr.fill_input_buffer = _src_fill_buffer;
+ p->m_SrcMgr.resync_to_restart = _src_resync;
+ p->m_Info.client_data = p;
+ p->m_Info.err = &p->m_ErrMgr;
+ if (setjmp(p->m_JumpMark) == -1) {
return 0;
+ }
+ jpeg_create_decompress(&p->m_Info);
+ p->m_Info.src = &p->m_SrcMgr;
+ p->m_SkipSize = 0;
+ return p;
}
-int CCodec_JpegModule::StartScanline(void* pContext, int down_scale)
-{
- if (m_pExtProvider) {
- return m_pExtProvider->StartScanline(pContext, down_scale);
- }
- FXJPEG_Context* p = (FXJPEG_Context*)pContext;
- if (setjmp(p->m_JumpMark) == -1) {
- return 0;
- }
- p->m_Info.scale_denom = down_scale;
- return jpeg_start_decompress(&p->m_Info);
+void CCodec_JpegModule::Finish(void* pContext) {
+ if (m_pExtProvider) {
+ m_pExtProvider->Finish(pContext);
+ return;
+ }
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ jpeg_destroy_decompress(&p->m_Info);
+ p->m_FreeFunc(p);
}
-FX_BOOL CCodec_JpegModule::ReadScanline(void* pContext, unsigned char* dest_buf)
-{
- if (m_pExtProvider) {
- return m_pExtProvider->ReadScanline(pContext, dest_buf);
- }
- FXJPEG_Context* p = (FXJPEG_Context*)pContext;
- if (setjmp(p->m_JumpMark) == -1) {
- return FALSE;
- }
- int nlines = jpeg_read_scanlines(&p->m_Info, &dest_buf, 1);
- return nlines == 1;
+void CCodec_JpegModule::Input(void* pContext,
+ const unsigned char* src_buf,
+ FX_DWORD src_size) {
+ if (m_pExtProvider) {
+ m_pExtProvider->Input(pContext, src_buf, src_size);
+ return;
+ }
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (p->m_SkipSize) {
+ if (p->m_SkipSize > src_size) {
+ p->m_SrcMgr.bytes_in_buffer = 0;
+ p->m_SkipSize -= src_size;
+ return;
+ }
+ src_size -= p->m_SkipSize;
+ src_buf += p->m_SkipSize;
+ p->m_SkipSize = 0;
+ }
+ p->m_SrcMgr.next_input_byte = src_buf;
+ p->m_SrcMgr.bytes_in_buffer = src_size;
}
-FX_DWORD CCodec_JpegModule::GetAvailInput(void* pContext, uint8_t** avail_buf_ptr)
-{
- if (m_pExtProvider) {
- return m_pExtProvider->GetAvailInput(pContext, avail_buf_ptr);
- }
- if(avail_buf_ptr != NULL) {
- *avail_buf_ptr = NULL;
- if(((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
- *avail_buf_ptr = (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
- }
- }
- return (FX_DWORD)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
+int CCodec_JpegModule::ReadHeader(void* pContext,
+ int* width,
+ int* height,
+ int* nComps) {
+ if (m_pExtProvider) {
+ return m_pExtProvider->ReadHeader(pContext, width, height, nComps);
+ }
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return 1;
+ }
+ int ret = jpeg_read_header(&p->m_Info, true);
+ if (ret == JPEG_SUSPENDED) {
+ return 2;
+ }
+ if (ret != JPEG_HEADER_OK) {
+ return 1;
+ }
+ *width = p->m_Info.image_width;
+ *height = p->m_Info.image_height;
+ *nComps = p->m_Info.num_components;
+ return 0;
+}
+int CCodec_JpegModule::StartScanline(void* pContext, int down_scale) {
+ if (m_pExtProvider) {
+ return m_pExtProvider->StartScanline(pContext, down_scale);
+ }
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return 0;
+ }
+ p->m_Info.scale_denom = down_scale;
+ return jpeg_start_decompress(&p->m_Info);
+}
+FX_BOOL CCodec_JpegModule::ReadScanline(void* pContext,
+ unsigned char* dest_buf) {
+ if (m_pExtProvider) {
+ return m_pExtProvider->ReadScanline(pContext, dest_buf);
+ }
+ FXJPEG_Context* p = (FXJPEG_Context*)pContext;
+ if (setjmp(p->m_JumpMark) == -1) {
+ return FALSE;
+ }
+ int nlines = jpeg_read_scanlines(&p->m_Info, &dest_buf, 1);
+ return nlines == 1;
+}
+FX_DWORD CCodec_JpegModule::GetAvailInput(void* pContext,
+ uint8_t** avail_buf_ptr) {
+ if (m_pExtProvider) {
+ return m_pExtProvider->GetAvailInput(pContext, avail_buf_ptr);
+ }
+ if (avail_buf_ptr != NULL) {
+ *avail_buf_ptr = NULL;
+ if (((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
+ *avail_buf_ptr =
+ (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
+ }
+ }
+ return (FX_DWORD)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 19:28:37 +0000