void vp9_free_svc_cyclic_refresh(VP9_COMP *const cpi) {
int sl, tl;
SVC *const svc = &cpi->svc;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
int layer = LAYER_IDS_TO_IDX(sl, tl, oxcf->ts_number_layers);
LAYER_CONTEXT *const lc = &svc->layer_context[layer];
if (lc->map)
vpx_free(lc->map);
if (lc->last_coded_q_map)
vpx_free(lc->last_coded_q_map);
}
}
}
void vp9_init_layer_context(VP9_COMP *const cpi) {
SVC *const svc = &cpi->svc;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
int mi_rows = cpi->common.mi_rows;
int mi_cols = cpi->common.mi_cols;
int sl, tl, i;
int alt_ref_idx = svc->number_spatial_layers;
svc->spatial_layer_id = 0;
svc->temporal_layer_id = 0;
svc->first_spatial_layer_to_encode = 0;
svc->rc_drop_superframe = 0;
svc->force_zero_mode_spatial_ref = 0;
svc->use_base_mv = 0;
svc->scaled_temp_is_alloc = 0;
svc->scaled_one_half = 0;
svc->current_superframe = 0;
for (i = 0; i < REF_FRAMES; ++i)
svc->ref_frame_index[i] = -1;
for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
cpi->svc.ext_frame_flags[sl] = 0;
cpi->svc.ext_lst_fb_idx[sl] = 0;
cpi->svc.ext_gld_fb_idx[sl] = 1;
cpi->svc.ext_alt_fb_idx[sl] = 2;
}
if (cpi->oxcf.error_resilient_mode == 0 && cpi->oxcf.pass == 2) {
if (vpx_realloc_frame_buffer(&cpi->svc.empty_frame.img,
SMALL_FRAME_WIDTH, SMALL_FRAME_HEIGHT,
cpi->common.subsampling_x,
cpi->common.subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
cpi->common.use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS,
cpi->common.byte_alignment,
NULL, NULL, NULL))
vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
"Failed to allocate empty frame for multiple frame "
"contexts");
memset(cpi->svc.empty_frame.img.buffer_alloc, 0x80,
cpi->svc.empty_frame.img.buffer_alloc_sz);
}
for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
int layer = LAYER_IDS_TO_IDX(sl, tl, oxcf->ts_number_layers);
LAYER_CONTEXT *const lc = &svc->layer_context[layer];
RATE_CONTROL *const lrc = &lc->rc;
int i;
lc->current_video_frame_in_layer = 0;
lc->layer_size = 0;
lc->frames_from_key_frame = 0;
lc->last_frame_type = FRAME_TYPES;
lrc->ni_av_qi = oxcf->worst_allowed_q;
lrc->total_actual_bits = 0;
lrc->total_target_vs_actual = 0;
lrc->ni_tot_qi = 0;
lrc->tot_q = 0.0;
lrc->avg_q = 0.0;
lrc->ni_frames = 0;
lrc->decimation_count = 0;
lrc->decimation_factor = 0;
for (i = 0; i < RATE_FACTOR_LEVELS; ++i) {
lrc->rate_correction_factors[i] = 1.0;
}
if (cpi->oxcf.rc_mode == VPX_CBR) {
lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
lrc->last_q[INTER_FRAME] = oxcf->worst_allowed_q;
lrc->avg_frame_qindex[INTER_FRAME] = oxcf->worst_allowed_q;
lrc->avg_frame_qindex[KEY_FRAME] = oxcf->worst_allowed_q;
} else {
lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
lrc->last_q[KEY_FRAME] = oxcf->best_allowed_q;
lrc->last_q[INTER_FRAME] = oxcf->best_allowed_q;
lrc->avg_frame_qindex[KEY_FRAME] = (oxcf->worst_allowed_q +
oxcf->best_allowed_q) / 2;
lrc->avg_frame_qindex[INTER_FRAME] = (oxcf->worst_allowed_q +
oxcf->best_allowed_q) / 2;
if (oxcf->ss_enable_auto_arf[sl])
lc->alt_ref_idx = alt_ref_idx++;
else
lc->alt_ref_idx = INVALID_IDX;
lc->gold_ref_idx = INVALID_IDX;
}
lrc->buffer_level = oxcf->starting_buffer_level_ms *
lc->target_bandwidth / 1000;
lrc->bits_off_target = lrc->buffer_level;
// Initialize the cyclic refresh parameters. If spatial layers are used
// (i.e., ss_number_layers > 1), these need to be updated per spatial
// layer.
// Cyclic refresh is only applied on base temporal layer.
if (oxcf->ss_number_layers > 1 &&
tl == 0) {
size_t last_coded_q_map_size;
size_t consec_zero_mv_size;
VP9_COMMON *const cm = &cpi->common;
lc->sb_index = 0;
CHECK_MEM_ERROR(cm, lc->map,
vpx_malloc(mi_rows * mi_cols * sizeof(*lc->map)));
memset(lc->map, 0, mi_rows * mi_cols);
last_coded_q_map_size = mi_rows * mi_cols *
sizeof(*lc->last_coded_q_map);
CHECK_MEM_ERROR(cm, lc->last_coded_q_map,
vpx_malloc(last_coded_q_map_size));
assert(MAXQ <= 255);
memset(lc->last_coded_q_map, MAXQ, last_coded_q_map_size);
consec_zero_mv_size = mi_rows * mi_cols * sizeof(*lc->consec_zero_mv);
CHECK_MEM_ERROR(cm, lc->consec_zero_mv,
vpx_malloc(consec_zero_mv_size));
memset(lc->consec_zero_mv, 0, consec_zero_mv_size);
}
}
}
// Still have extra buffer for base layer golden frame
if (!(svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR)
&& alt_ref_idx < REF_FRAMES)
svc->layer_context[0].gold_ref_idx = alt_ref_idx;
}
// Update the layer context from a change_config() call.
void vp9_update_layer_context_change_config(VP9_COMP *const cpi,
const int target_bandwidth) {
SVC *const svc = &cpi->svc;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
const RATE_CONTROL *const rc = &cpi->rc;
int sl, tl, layer = 0, spatial_layer_target;
float bitrate_alloc = 1.0;
if (svc->temporal_layering_mode != VP9E_TEMPORAL_LAYERING_MODE_NOLAYERING) {
for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
layer = LAYER_IDS_TO_IDX(sl, tl, oxcf->ts_number_layers);
svc->layer_context[layer].target_bandwidth =
oxcf->layer_target_bitrate[layer];
}
layer = LAYER_IDS_TO_IDX(sl, ((oxcf->ts_number_layers - 1) < 0 ?
0 : (oxcf->ts_number_layers - 1)), oxcf->ts_number_layers);
spatial_layer_target =
svc->layer_context[layer].target_bandwidth =
oxcf->layer_target_bitrate[layer];
for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
LAYER_CONTEXT *const lc =
&svc->layer_context[sl * oxcf->ts_number_layers + tl];
RATE_CONTROL *const lrc = &lc->rc;
lc->spatial_layer_target_bandwidth = spatial_layer_target;
bitrate_alloc = (float)lc->target_bandwidth / spatial_layer_target;
lrc->starting_buffer_level =
(int64_t)(rc->starting_buffer_level * bitrate_alloc);
lrc->optimal_buffer_level =
(int64_t)(rc->optimal_buffer_level * bitrate_alloc);
lrc->maximum_buffer_size =
(int64_t)(rc->maximum_buffer_size * bitrate_alloc);
lrc->bits_off_target =
VPXMIN(lrc->bits_off_target, lrc->maximum_buffer_size);
lrc->buffer_level = VPXMIN(lrc->buffer_level, lrc->maximum_buffer_size);
lc->framerate = cpi->framerate / oxcf->ts_rate_decimator[tl];
lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
lrc->max_frame_bandwidth = rc->max_frame_bandwidth;
lrc->worst_quality = rc->worst_quality;
lrc->best_quality = rc->best_quality;
}
}
} else {
int layer_end;
if (svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR) {
layer_end = svc->number_temporal_layers;
} else {
layer_end = svc->number_spatial_layers;
}
for (layer = 0; layer < layer_end; ++layer) {
LAYER_CONTEXT *const lc = &svc->layer_context[layer];
RATE_CONTROL *const lrc = &lc->rc;
lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
bitrate_alloc = (float)lc->target_bandwidth / target_bandwidth;
// Update buffer-related quantities.
lrc->starting_buffer_level =
(int64_t)(rc->starting_buffer_level * bitrate_alloc);
lrc->optimal_buffer_level =
(int64_t)(rc->optimal_buffer_level * bitrate_alloc);
lrc->maximum_buffer_size =
(int64_t)(rc->maximum_buffer_size * bitrate_alloc);
lrc->bits_off_target = VPXMIN(lrc->bits_off_target,
lrc->maximum_buffer_size);
lrc->buffer_level = VPXMIN(lrc->buffer_level, lrc->maximum_buffer_size);
// Update framerate-related quantities.
if (svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR) {
lc->framerate = cpi->framerate / oxcf->ts_rate_decimator[layer];
} else {
lc->framerate = cpi->framerate;
}
lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
lrc->max_frame_bandwidth = rc->max_frame_bandwidth;
// Update qp-related quantities.
lrc->worst_quality = rc->worst_quality;
lrc->best_quality = rc->best_quality;
}
}
}
