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vc1dec: Implement intensity compensation for vc1_interp_mc()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-24 20:41:31 +02:00
parent 782ebd6118
commit 84c0ec92ae
1 changed files with 25 additions and 1 deletions
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26
libavcodec/vc1dec.c
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@ -1918,7 +1918,7 @@ static void vc1_interp_mc(VC1Context *v)
srcV = s->edge_emu_buffer + 18 * s->linesize;
}
if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22
if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || v->mv_mode == MV_PMODE_INTENSITY_COMP
|| (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
|| (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
@ -1957,6 +1957,30 @@ static void vc1_interp_mc(VC1Context *v)
src2 += s->uvlinesize;
}
}
if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
const uint8_t *luty = v->next_luty [v->ref_field_type[1]];
const uint8_t *lutuv= v->next_lutuv[v->ref_field_type[1]];
int i, j;
uint8_t *src, *src2;
src = srcY;
for (j = 0; j < 17 + s->mspel * 2; j++) {
for (i = 0; i < 17 + s->mspel * 2; i++)
src[i] = luty[src[i]];
src += s->linesize;
}
src = srcU;
src2 = srcV;
for (j = 0; j < 9; j++) {
for (i = 0; i < 9; i++) {
src[i] = lutuv[src[i]];
src2[i] = lutuv[src2[i]];
}
src += s->uvlinesize;
src2 += s->uvlinesize;
}
}
srcY += s->mspel * (1 + s->linesize);
}