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vp9: fix bugs in updating coef probabilities with parallelmode=1

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- The memcpy was completely wrong because
s->prob_ctx[s->framectxid].coef is a [4][2][2][6][6][3] array, whereas
s->prob.coef is a [4][2][2][6][6][11] array.
- The additional check was committed to ffmpeg by Ronald S. Bultje.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Guillaume Martres 2014-01-19 19:04:59 +01:00 committed by Anton Khirnov
parent bd01412313
commit 50866c8d95
1 changed files with 11 additions and 2 deletions
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13
libavcodec/vp9.c
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@ -1144,8 +1144,17 @@ static int vp9_decode_frame(AVCodecContext *avctx, AVFrame *frame,
// probability maintenance between frames)
if (s->refreshctx) {
if (s->parallelmode) {
memcpy(s->prob_ctx[s->framectxid].coef, s->prob.coef,
sizeof(s->prob.coef));
int j, k, l, m;
for (i = 0; i < 4; i++) {
for (j = 0; j < 2; j++)
for (k = 0; k < 2; k++)
for (l = 0; l < 6; l++)
for (m = 0; m < 6; m++)
memcpy(s->prob_ctx[s->framectxid].coef[i][j][k][l][m],
s->prob.coef[i][j][k][l][m], 3);
if (s->txfmmode == i)
break;
}
s->prob_ctx[s->framectxid].p = s->prob.p;
} else {
ff_vp9_adapt_probs(s);