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vp9: faster skip-block coefficient blanking.

This commit is contained in:
Ronald S. Bultje 2014-01-24 21:54:15 -05:00 committed by Clément Bœsch
parent cdfcd06126
commit 0c30c8ddc1
1 changed files with 27 additions and 6 deletions
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33
libavcodec/vp9.c
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@ -2773,13 +2773,34 @@ static void decode_b(AVCodecContext *ctx, int row, int col,
if (!b->skip) {
decode_coeffs(ctx);
} else {
int pl;
int row7 = s->row7;
memset(&s->above_y_nnz_ctx[col * 2], 0, w4 * 2);
memset(&s->left_y_nnz_ctx[(row & 7) << 1], 0, h4 * 2);
for (pl = 0; pl < 2; pl++) {
memset(&s->above_uv_nnz_ctx[pl][col], 0, w4);
memset(&s->left_uv_nnz_ctx[pl][row & 7], 0, h4);
#define SPLAT_ZERO_CTX(v, n) \
switch (n) { \
case 1: v = 0; break; \
case 2: AV_ZERO16(&v); break; \
case 4: AV_ZERO32(&v); break; \
case 8: AV_ZERO64(&v); break; \
case 16: AV_ZERO128(&v); break; \
}
#define SPLAT_ZERO_YUV(dir, var, off, n) \
do { \
SPLAT_ZERO_CTX(s->dir##_y_##var[off * 2], n * 2); \
SPLAT_ZERO_CTX(s->dir##_uv_##var[0][off], n); \
SPLAT_ZERO_CTX(s->dir##_uv_##var[1][off], n); \
} while (0)
switch (w4) {
case 1: SPLAT_ZERO_YUV(above, nnz_ctx, col, 1); break;
case 2: SPLAT_ZERO_YUV(above, nnz_ctx, col, 2); break;
case 4: SPLAT_ZERO_YUV(above, nnz_ctx, col, 4); break;
case 8: SPLAT_ZERO_YUV(above, nnz_ctx, col, 8); break;
}
switch (h4) {
case 1: SPLAT_ZERO_YUV(left, nnz_ctx, row7, 1); break;
case 2: SPLAT_ZERO_YUV(left, nnz_ctx, row7, 2); break;
case 4: SPLAT_ZERO_YUV(left, nnz_ctx, row7, 4); break;
case 8: SPLAT_ZERO_YUV(left, nnz_ctx, row7, 8); break;
}
}
if (s->pass == 1) {