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mpeg1: Make intra-block decoding independent of MpegEncContext

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This allows untangling the eatqi decoder from the MPEG-1 decoder.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Vittorio Giovara
2016-01-25 12:56:11 -05:00
committed by Diego Biurrun
parent 249827f736
commit 7c25ffe070
4 changed files with 113 additions and 98 deletions
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6
libavcodec/mpeg12.h
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@@ -50,7 +50,11 @@ static inline int decode_dc(GetBitContext *gb, int component)
return diff;
}
int ff_mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n);
int ff_mpeg1_decode_block_intra(GetBitContext *gb,
const uint16_t *quant_matrix,
uint8_t *const scantable, int last_dc[3],
int16_t *block, int index, int qscale);
void ff_mpeg1_clean_buffers(MpegEncContext *s);
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);