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[svc] Make size of empty frame to be 16x16 all the time

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Change-Id: Ibab09aa0e8c69cf5efea2f0ec035e5da9cc894b0
This commit is contained in:
Minghai Shang 2015-05-20 16:43:27 -07:00
parent 6f41e29064
commit 15353216c5
4 changed files with 23 additions and 24 deletions
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16
vp9/encoder/vp9_encoder.c
View File

@ -3474,11 +3474,18 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
}
}
if (is_two_pass_svc(cpi) && cm->error_resilient_mode == 0) {
// Use the last frame context for the empty frame.
// Use context 0 for intra only empty frame, but the last frame context
// for other empty frames.
if (cpi->svc.encode_empty_frame_state == ENCODING) {
if (cpi->svc.encode_intra_empty_frame != 0)
cm->frame_context_idx = 0;
else
cm->frame_context_idx = FRAME_CONTEXTS - 1;
} else {
cm->frame_context_idx =
(cpi->svc.encode_empty_frame_state == ENCODING) ? FRAME_CONTEXTS - 1 :
cpi->svc.spatial_layer_id * cpi->svc.number_temporal_layers +
cpi->svc.temporal_layer_id;
}
// The probs will be updated based on the frame type of its previous
// frame if frame_parallel_decoding_mode is 0. The type may vary for
@ -3966,6 +3973,7 @@ int vp9_get_compressed_data(VP9_COMP *cpi, unsigned int *frame_flags,
}
cm->show_frame = 0;
cm->intra_only = 0;
cpi->refresh_alt_ref_frame = 1;
cpi->refresh_golden_frame = 0;
cpi->refresh_last_frame = 0;
@ -4308,8 +4316,10 @@ int vp9_get_compressed_data(VP9_COMP *cpi, unsigned int *frame_flags,
#endif
if (is_two_pass_svc(cpi)) {
if (cpi->svc.encode_empty_frame_state == ENCODING)
if (cpi->svc.encode_empty_frame_state == ENCODING) {
cpi->svc.encode_empty_frame_state = ENCODED;
cpi->svc.encode_intra_empty_frame = 0;
}
if (cm->show_frame) {
++cpi->svc.spatial_layer_to_encode;

5
vp9/encoder/vp9_firstpass.c
View File

@ -2581,9 +2581,8 @@ void vp9_rc_get_second_pass_params(VP9_COMP *cpi) {
cpi->ref_frame_flags &=
(~VP9_LAST_FLAG & ~VP9_GOLD_FLAG & ~VP9_ALT_FLAG);
lc->frames_from_key_frame = 0;
// Reset the empty frame resolution since we have a key frame.
cpi->svc.empty_frame_width = cm->width;
cpi->svc.empty_frame_height = cm->height;
// Encode an intra only empty frame since we have a key frame.
cpi->svc.encode_intra_empty_frame = 1;
}
} else {
cm->frame_type = INTER_FRAME;

23
vp9/encoder/vp9_svc_layercontext.c
View File

@ -15,6 +15,8 @@
#include "vp9/encoder/vp9_extend.h"
#define SMALL_FRAME_FB_IDX 7
#define SMALL_FRAME_WIDTH 16
#define SMALL_FRAME_HEIGHT 16
void vp9_init_layer_context(VP9_COMP *const cpi) {
SVC *const svc = &cpi->svc;
@ -33,7 +35,7 @@ void vp9_init_layer_context(VP9_COMP *const cpi) {
if (cpi->oxcf.error_resilient_mode == 0 && cpi->oxcf.pass == 2) {
if (vp9_realloc_frame_buffer(&cpi->svc.empty_frame.img,
cpi->common.width, cpi->common.height,
SMALL_FRAME_WIDTH, SMALL_FRAME_HEIGHT,
cpi->common.subsampling_x,
cpi->common.subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
@ -48,8 +50,6 @@ void vp9_init_layer_context(VP9_COMP *const cpi) {
memset(cpi->svc.empty_frame.img.buffer_alloc, 0x80,
cpi->svc.empty_frame.img.buffer_alloc_sz);
cpi->svc.empty_frame_width = cpi->common.width;
cpi->svc.empty_frame_height = cpi->common.height;
}
}
@ -362,20 +362,11 @@ int vp9_svc_start_frame(VP9_COMP *const cpi) {
cpi->lst_fb_idx =
cpi->gld_fb_idx = cpi->alt_fb_idx = SMALL_FRAME_FB_IDX;
// Gradually make the empty frame smaller to save bits. Make it half of
// its previous size because of the scaling factor restriction.
cpi->svc.empty_frame_width >>= 1;
cpi->svc.empty_frame_width = (cpi->svc.empty_frame_width + 1) & ~1;
if (cpi->svc.empty_frame_width < 16)
cpi->svc.empty_frame_width = 16;
if (cpi->svc.encode_intra_empty_frame != 0)
cpi->common.intra_only = 1;
cpi->svc.empty_frame_height >>= 1;
cpi->svc.empty_frame_height = (cpi->svc.empty_frame_height + 1) & ~1;
if (cpi->svc.empty_frame_height < 16)
cpi->svc.empty_frame_height = 16;
width = cpi->svc.empty_frame_width;
height = cpi->svc.empty_frame_height;
width = SMALL_FRAME_WIDTH;
height = SMALL_FRAME_HEIGHT;
}
}
}

3
vp9/encoder/vp9_svc_layercontext.h
View File

@ -57,8 +57,7 @@ typedef struct {
NEED_TO_ENCODE
}encode_empty_frame_state;
struct lookahead_entry empty_frame;
int empty_frame_width;
int empty_frame_height;
int encode_intra_empty_frame;
// Store scaled source frames to be used for temporal filter to generate
// a alt ref frame.