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author | Roman Shaposhnik <roman@shaposhnik.org> | 2008-08-27 20:17:01 +0000 |
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committer | Roman Shaposhnik <roman@shaposhnik.org> | 2008-08-27 20:17:01 +0000 |
commit | 7ae6dcb595b6bb7c83ac312d8759b6862b974fbb (patch) | |
tree | 098ddfbb5acb2d6ab1c497ed3843bd93c1576e27 /libavcodec/dv.c | |
parent | 0dbddda3979266ecb4fa4aa6e47f09b7364433e2 (diff) | |
download | ffmpeg-7ae6dcb595b6bb7c83ac312d8759b6862b974fbb.tar.gz |
Simplification of how dct_mode affects decoding.
Originally committed as revision 14996 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/dv.c')
-rw-r--r-- | libavcodec/dv.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/libavcodec/dv.c b/libavcodec/dv.c index aa7ef71a5f..2322e92fc4 100644 --- a/libavcodec/dv.c +++ b/libavcodec/dv.c @@ -247,7 +247,7 @@ typedef struct BlockInfo { const uint32_t *factor_table; const uint8_t *scan_table; uint8_t pos; /* position in block */ - uint8_t dct_mode; + void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block); uint8_t partial_bit_count; uint16_t partial_bit_buffer; int shift_offset; @@ -352,7 +352,6 @@ static inline void dv_decode_video_segment(DVVideoContext *s, DCTELEM *block, *block1; int c_offset; uint8_t *y_ptr; - void (*idct_put)(uint8_t *dest, int line_size, DCTELEM *block); const uint8_t *buf_ptr; PutBitContext pb, vs_pb; GetBitContext gb; @@ -386,7 +385,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s, /* get the dc */ dc = get_sbits(&gb, 9); dct_mode = get_bits1(&gb); - mb->dct_mode = dct_mode; + mb->idct_put = s->idct_put[dct_mode && log2_blocksize==3]; mb->scan_table = s->dv_zigzag[dct_mode]; class1 = get_bits(&gb, 2); mb->factor_table = s->dv_idct_factor[class1 == 3][dct_mode] @@ -471,15 +470,14 @@ static inline void dv_decode_video_segment(DVVideoContext *s, (mb_x>>((s->sys->pix_fmt == PIX_FMT_YUV411P)?2:1)))<<log2_blocksize); for(j = 0;j < 6; j++) { - idct_put = s->idct_put[mb->dct_mode && log2_blocksize==3]; if (s->sys->pix_fmt == PIX_FMT_YUV422P) { /* 4:2:2 */ if (j == 0 || j == 2) { /* Y0 Y1 */ - idct_put(y_ptr + ((j >> 1)<<log2_blocksize), + mb->idct_put(y_ptr + ((j >> 1)<<log2_blocksize), s->picture.linesize[0], block); } else if(j > 3) { /* Cr Cb */ - idct_put(s->picture.data[6 - j] + c_offset, + mb->idct_put(s->picture.data[6 - j] + c_offset, s->picture.linesize[6 - j], block); } /* note: j=1 and j=3 are "dummy" blocks in 4:2:2 */ @@ -487,9 +485,9 @@ static inline void dv_decode_video_segment(DVVideoContext *s, if (j < 4) { if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x < (704 / 8)) { /* NOTE: at end of line, the macroblock is handled as 420 */ - idct_put(y_ptr + (j<<log2_blocksize), s->picture.linesize[0], block); + mb->idct_put(y_ptr + (j<<log2_blocksize), s->picture.linesize[0], block); } else { - idct_put(y_ptr + (((j & 1) + (j >> 1) * s->picture.linesize[0])<<log2_blocksize), + mb->idct_put(y_ptr + (((j & 1) + (j >> 1) * s->picture.linesize[0])<<log2_blocksize), s->picture.linesize[0], block); } } else { @@ -499,7 +497,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s, uint8_t *c_ptr, *c_ptr1, *ptr, *ptr1; int x, y, linesize; /* NOTE: at end of line, the macroblock is handled as 420 */ - idct_put(pixels, 8, block); + mb->idct_put(pixels, 8, block); linesize = s->picture.linesize[6 - j]; c_ptr = s->picture.data[6 - j] + c_offset; ptr = pixels; @@ -514,7 +512,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s, } } else { /* don't ask me why they inverted Cb and Cr ! */ - idct_put(s->picture.data[6 - j] + c_offset, + mb->idct_put(s->picture.data[6 - j] + c_offset, s->picture.linesize[6 - j], block); } } |