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| author | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-17 16:29:11 +0000 |
|---|---|---|
| committer | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-17 16:29:11 +0000 |
| commit | 4922a5b0ee9108e406b8b14356f19851702604d1 (patch) | |
| tree | 6d0928a7c22b7f6ac714ac7a2a08fe5a77c02f0b /libavcodec/mjpeg.h | |
| parent | 88bcb6c23f6d873b3cda84275dea0ab9e3b449b6 (diff) | |
| download | ffmpeg-4922a5b0ee9108e406b8b14356f19851702604d1.tar.gz | |
split mjpeg.c into an encoder and a decoder file
Originally committed as revision 9048 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/mjpeg.h')
| -rw-r--r-- | libavcodec/mjpeg.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libavcodec/mjpeg.h b/libavcodec/mjpeg.h index ab546edd18..7030b1784c 100644 --- a/libavcodec/mjpeg.h +++ b/libavcodec/mjpeg.h @@ -192,4 +192,31 @@ typedef struct MJpegDecodeContext { int cur_scan; /* current scan, used by JPEG-LS */ } MJpegDecodeContext; +#define PREDICT(ret, topleft, top, left, predictor)\ + switch(predictor){\ + case 1: ret= left; break;\ + case 2: ret= top; break;\ + case 3: ret= topleft; break;\ + case 4: ret= left + top - topleft; break;\ + case 5: ret= left + ((top - topleft)>>1); break;\ + case 6: ret= top + ((left - topleft)>>1); break;\ + default:\ + case 7: ret= (left + top)>>1; break;\ + } + +extern const uint8_t bits_dc_luminance[]; +extern const uint8_t val_dc_luminance[]; + +extern const uint8_t bits_dc_chrominance[]; +extern const uint8_t val_dc_chrominance[]; + +extern const uint8_t bits_ac_luminance[]; +extern const uint8_t val_ac_luminance[]; + +extern const uint8_t bits_ac_chrominance[]; +extern const uint8_t val_ac_chrominance[]; + +void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code, + const uint8_t *bits_table, const uint8_t *val_table); + #endif /* MJPEG_H */ |