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Handling frame references and scale factors in one for loop.

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Using ALLOWED_REFS_PER_FRAME constants instead of hard coded 3, replacing
memcpy with plain struct assignment.

Change-Id: Ibc86f5d175fcb3f3a3eddacf593525370f1f854c
This commit is contained in:
Dmitry Kovalev 2013-04-24 17:20:53 -07:00
parent ff2b8aa2c9
commit 994c79cccf
2 changed files with 21 additions and 25 deletions
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12
vp9/common/vp9_onyxc_int.h
View File

@ -181,12 +181,14 @@ typedef struct VP9Common {
int fb_idx_ref_cnt[NUM_YV12_BUFFERS]; /* reference counts */
int ref_frame_map[NUM_REF_FRAMES]; /* maps fb_idx to reference slot */
/* TODO(jkoleszar): could expand active_ref_idx to 4, with 0 as intra, and
* roll new_fb_idx into it.
*/
int active_ref_idx[3]; /* each frame can reference 3 buffers */
// TODO(jkoleszar): could expand active_ref_idx to 4, with 0 as intra, and
// roll new_fb_idx into it.
// Each frame can reference ALLOWED_REFS_PER_FRAME buffers
int active_ref_idx[ALLOWED_REFS_PER_FRAME];
struct scale_factors active_ref_scale[ALLOWED_REFS_PER_FRAME];
int new_fb_idx;
struct scale_factors active_ref_scale[3];
YV12_BUFFER_CONFIG post_proc_buffer;
YV12_BUFFER_CONFIG temp_scale_frame;

34
vp9/decoder/vp9_decodframe.c
View File

@ -1517,10 +1517,18 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
// Should the GF or ARF be updated from the current frame
pbi->refresh_frame_flags = vp9_read_literal(&header_bc, NUM_REF_FRAMES);
// Select active reference frames
// Select active reference frames and calculate scaling factors
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
int ref_frame_num = vp9_read_literal(&header_bc, NUM_REF_FRAMES_LG2);
pc->active_ref_idx[i] = pc->ref_frame_map[ref_frame_num];
const int ref = vp9_read_literal(&header_bc, NUM_REF_FRAMES_LG2);
const int mapped_ref = pc->ref_frame_map[ref];
YV12_BUFFER_CONFIG *const fb = &pc->yv12_fb[mapped_ref];
struct scale_factors *const sf = &pc->active_ref_scale[i];
pc->active_ref_idx[i] = mapped_ref;
if (mapped_ref >= NUM_YV12_BUFFERS)
memset(sf, 0, sizeof(*sf));
else
vp9_setup_scale_factors_for_frame(sf, fb, pc->width, pc->height);
}
pc->ref_frame_sign_bias[GOLDEN_FRAME] = vp9_read_bit(&header_bc);
@ -1532,17 +1540,6 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
pc->use_interintra = vp9_read_bit(&header_bc);
#endif
// Calculate scaling factors for each of the 3 available references
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
const int idx = pc->active_ref_idx[i];
struct scale_factors *sf = &pc->active_ref_scale[i];
if (idx >= NUM_YV12_BUFFERS)
memset(sf, 0, sizeof(*sf));
else
vp9_setup_scale_factors_for_frame(sf, &pc->yv12_fb[idx],
pc->width, pc->height);
}
// To enable choice of different interpolation filters
vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc);
}
@ -1556,8 +1553,7 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
}
pc->frame_context_idx = vp9_read_literal(&header_bc, NUM_FRAME_CONTEXTS_LG2);
vpx_memcpy(&pc->fc, &pc->frame_contexts[pc->frame_context_idx],
sizeof(pc->fc));
pc->fc = pc->frame_contexts[pc->frame_context_idx];
setup_segmentation(pc, xd, &header_bc);
@ -1645,10 +1641,8 @@ int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
}
#endif
if (pc->refresh_entropy_probs) {
vpx_memcpy(&pc->frame_contexts[pc->frame_context_idx], &pc->fc,
sizeof(pc->fc));
}
if (pc->refresh_entropy_probs)
pc->frame_contexts[pc->frame_context_idx] = pc->fc;
*p_data_end = vp9_reader_find_end(&residual_bc);
return 0;