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Revert "VC1: merge idct8x8, coeff adjustments and put_pixels."

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This reverts commit f8bed30d8b176fa030f6737765338bb4a2bcabc9. The reason
for this is that the overlap filter, which runs after IDCT, should run
on unclamped values, and thus IDCT and put_pixels() cannot be merged if
we want to attempt to be bitexact.
This commit is contained in:
Ronald S. Bultje
2011-05-04 07:35:30 -04:00
parent 1a5e4fd8c5
commit 18b6a69ce9
5 changed files with 39 additions and 170 deletions
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54
libavcodec/vc1dsp.c
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@ -199,7 +199,7 @@ static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
}
}
static av_always_inline void vc1_inv_trans_8x8_c(DCTELEM block[64], int shl, int sub)
static void vc1_inv_trans_8x8_c(DCTELEM block[64])
{
int i;
register int t1,t2,t3,t4,t5,t6,t7,t8;
@ -254,50 +254,20 @@ static av_always_inline void vc1_inv_trans_8x8_c(DCTELEM block[64], int shl, int
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
dst[ 0] = (((t5 + t1 ) >> 7) - sub) << shl;
dst[ 8] = (((t6 + t2 ) >> 7) - sub) << shl;
dst[16] = (((t7 + t3 ) >> 7) - sub) << shl;
dst[24] = (((t8 + t4 ) >> 7) - sub) << shl;
dst[32] = (((t8 - t4 + 1) >> 7) - sub) << shl;
dst[40] = (((t7 - t3 + 1) >> 7) - sub) << shl;
dst[48] = (((t6 - t2 + 1) >> 7) - sub) << shl;
dst[56] = (((t5 - t1 + 1) >> 7) - sub) << shl;
dst[ 0] = (t5 + t1) >> 7;
dst[ 8] = (t6 + t2) >> 7;
dst[16] = (t7 + t3) >> 7;
dst[24] = (t8 + t4) >> 7;
dst[32] = (t8 - t4 + 1) >> 7;
dst[40] = (t7 - t3 + 1) >> 7;
dst[48] = (t6 - t2 + 1) >> 7;
dst[56] = (t5 - t1 + 1) >> 7;
src++;
dst++;
}
}
static void vc1_inv_trans_8x8_add_c(uint8_t *dest, int linesize, DCTELEM *block)
{
vc1_inv_trans_8x8_c(block, 0, 0);
ff_add_pixels_clamped_c(block, dest, linesize);
}
static void vc1_inv_trans_8x8_put_signed_c(uint8_t *dest, int linesize, DCTELEM *block)
{
vc1_inv_trans_8x8_c(block, 0, 0);
ff_put_signed_pixels_clamped_c(block, dest, linesize);
}
static void vc1_inv_trans_8x8_put_signed_rangered_c(uint8_t *dest, int linesize, DCTELEM *block)
{
vc1_inv_trans_8x8_c(block, 1, 0);
ff_put_signed_pixels_clamped_c(block, dest, linesize);
}
static void vc1_inv_trans_8x8_put_c(uint8_t *dest, int linesize, DCTELEM *block)
{
vc1_inv_trans_8x8_c(block, 0, 0);
ff_put_pixels_clamped_c(block, dest, linesize);
}
static void vc1_inv_trans_8x8_put_rangered_c(uint8_t *dest, int linesize, DCTELEM *block)
{
vc1_inv_trans_8x8_c(block, 1, 64);
ff_put_pixels_clamped_c(block, dest, linesize);
}
/** Do inverse transform on 8x4 part of block
*/
static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
@ -692,11 +662,7 @@ static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
}
av_cold void ff_vc1dsp_init(VC1DSPContext* dsp) {
dsp->vc1_inv_trans_8x8_add = vc1_inv_trans_8x8_add_c;
dsp->vc1_inv_trans_8x8_put_signed[0] = vc1_inv_trans_8x8_put_signed_c;
dsp->vc1_inv_trans_8x8_put_signed[1] = vc1_inv_trans_8x8_put_signed_rangered_c;
dsp->vc1_inv_trans_8x8_put[0] = vc1_inv_trans_8x8_put_c;
dsp->vc1_inv_trans_8x8_put[1] = vc1_inv_trans_8x8_put_rangered_c;
dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;