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vp3: bfin: Transpose the IDCTs

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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>
This commit is contained in:
Martin Storsjö 2013-04-03 05:03:17 -07:00
parent c46819f229
commit 5941978e71
1 changed files with 8 additions and 2 deletions
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10
libavcodec/bfin/vp3_bfin.c
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@ -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 (i=0;i<8;i++)
for (j=0;j<8;j++) 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); 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 */ /* Inter iDCT */
static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block) 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_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); memset(block, 0, 128);
} }
@ -56,5 +61,6 @@ av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
if (!(flags & CODEC_FLAG_BITEXACT)) { if (!(flags & CODEC_FLAG_BITEXACT)) {
c->idct_add = bfin_vp3_idct_add; c->idct_add = bfin_vp3_idct_add;
c->idct_put = bfin_vp3_idct_put; c->idct_put = bfin_vp3_idct_put;
c->idct_perm = FF_TRANSPOSE_IDCT_PERM;
} }
} }