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| author | Martin Storsjö <martin@martin.st> | 2013-04-03 05:03:17 -0700 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-04-15 12:31:52 +0300 |
| commit | 5941978e71d2c3a8e2a7e87951e081e0b2e77da9 (patch) | |
| tree | 93b37167614c313dd7b148d9700b5868074947b1 /libavcodec/bfin | |
| parent | c46819f2299c73cd1bfa8ef04d08b0153a5699d3 (diff) | |
| download | ffmpeg-5941978e71d2c3a8e2a7e87951e081e0b2e77da9.tar.gz | |
vp3: bfin: Transpose the IDCTs
While this change isn't bitexact, the IDCTs weren't bitexact to
start with either.
This simplifies decoupling vp3 from dsputil.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/bfin')
| -rw-r--r-- | libavcodec/bfin/vp3_bfin.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libavcodec/bfin/vp3_bfin.c b/libavcodec/bfin/vp3_bfin.c index ce8b0336fd..86c4b23b41 100644 --- a/libavcodec/bfin/vp3_bfin.c +++ b/libavcodec/bfin/vp3_bfin.c @@ -37,7 +37,7 @@ static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block) for (i=0;i<8;i++) for (j=0;j<8;j++) - dest[line_size*i+j]=cm[block[i*8+j]]; + dest[line_size*i + j] = cm[block[j*8 + i]]; memset(block, 0, 128); } @@ -45,8 +45,13 @@ static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block) /* Inter iDCT */ static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block) { + const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + int i, j; + ff_bfin_vp3_idct (block); - ff_bfin_add_pixels_clamped (block, dest, line_size); + for (i = 0; i < 8; i++) + for (j = 0; j < 8; j++) + dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]]; memset(block, 0, 128); } @@ -56,5 +61,6 @@ av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags) if (!(flags & CODEC_FLAG_BITEXACT)) { c->idct_add = bfin_vp3_idct_add; c->idct_put = bfin_vp3_idct_put; + c->idct_perm = FF_TRANSPOSE_IDCT_PERM; } } |