738 lines
28 KiB
C
738 lines
28 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <math.h>
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#include "vp9/encoder/vp9_aq_cyclicrefresh.h"
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#include "vp9/encoder/vp9_encoder.h"
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#include "vp9/encoder/vp9_svc_layercontext.h"
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#include "vp9/encoder/vp9_extend.h"
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#include "vpx_dsp/vpx_dsp_common.h"
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#define SMALL_FRAME_FB_IDX 7
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#define SMALL_FRAME_WIDTH 32
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#define SMALL_FRAME_HEIGHT 16
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void vp9_init_layer_context(VP9_COMP *const cpi) {
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SVC *const svc = &cpi->svc;
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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int mi_rows = cpi->common.mi_rows;
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int mi_cols = cpi->common.mi_cols;
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int sl, tl;
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int alt_ref_idx = svc->number_spatial_layers;
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svc->spatial_layer_id = 0;
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svc->temporal_layer_id = 0;
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if (cpi->oxcf.error_resilient_mode == 0 && cpi->oxcf.pass == 2) {
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if (vpx_realloc_frame_buffer(&cpi->svc.empty_frame.img,
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SMALL_FRAME_WIDTH, SMALL_FRAME_HEIGHT,
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cpi->common.subsampling_x,
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cpi->common.subsampling_y,
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#if CONFIG_VP9_HIGHBITDEPTH
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cpi->common.use_highbitdepth,
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#endif
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VP9_ENC_BORDER_IN_PIXELS,
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cpi->common.byte_alignment,
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NULL, NULL, NULL))
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vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
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"Failed to allocate empty frame for multiple frame "
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"contexts");
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memset(cpi->svc.empty_frame.img.buffer_alloc, 0x80,
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cpi->svc.empty_frame.img.buffer_alloc_sz);
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}
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for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
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for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
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int layer = LAYER_IDS_TO_IDX(sl, tl, oxcf->ts_number_layers);
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LAYER_CONTEXT *const lc = &svc->layer_context[layer];
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RATE_CONTROL *const lrc = &lc->rc;
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int i;
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lc->current_video_frame_in_layer = 0;
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lc->layer_size = 0;
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lc->frames_from_key_frame = 0;
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lc->last_frame_type = FRAME_TYPES;
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lrc->ni_av_qi = oxcf->worst_allowed_q;
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lrc->total_actual_bits = 0;
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lrc->total_target_vs_actual = 0;
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lrc->ni_tot_qi = 0;
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lrc->tot_q = 0.0;
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lrc->avg_q = 0.0;
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lrc->ni_frames = 0;
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lrc->decimation_count = 0;
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lrc->decimation_factor = 0;
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for (i = 0; i < RATE_FACTOR_LEVELS; ++i) {
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lrc->rate_correction_factors[i] = 1.0;
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}
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if (cpi->oxcf.rc_mode == VPX_CBR) {
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lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
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lrc->last_q[INTER_FRAME] = oxcf->worst_allowed_q;
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lrc->avg_frame_qindex[INTER_FRAME] = oxcf->worst_allowed_q;
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lrc->avg_frame_qindex[KEY_FRAME] = oxcf->worst_allowed_q;
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} else {
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lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
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lrc->last_q[KEY_FRAME] = oxcf->best_allowed_q;
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lrc->last_q[INTER_FRAME] = oxcf->best_allowed_q;
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lrc->avg_frame_qindex[KEY_FRAME] = (oxcf->worst_allowed_q +
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oxcf->best_allowed_q) / 2;
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lrc->avg_frame_qindex[INTER_FRAME] = (oxcf->worst_allowed_q +
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oxcf->best_allowed_q) / 2;
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if (oxcf->ss_enable_auto_arf[sl])
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lc->alt_ref_idx = alt_ref_idx++;
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else
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lc->alt_ref_idx = INVALID_IDX;
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lc->gold_ref_idx = INVALID_IDX;
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}
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lrc->buffer_level = oxcf->starting_buffer_level_ms *
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lc->target_bandwidth / 1000;
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lrc->bits_off_target = lrc->buffer_level;
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// Initialize the cyclic refresh parameters. If spatial layers are used
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// (i.e., ss_number_layers > 1), these need to be updated per spatial
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// layer.
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// Cyclic refresh is only applied on base temporal layer.
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if (oxcf->ss_number_layers > 1 &&
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tl == 0) {
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size_t last_coded_q_map_size;
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size_t consec_zero_mv_size;
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lc->sb_index = 0;
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lc->map = vpx_malloc(mi_rows * mi_cols * sizeof(signed char));
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memset(lc->map, 0, mi_rows * mi_cols);
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last_coded_q_map_size = mi_rows * mi_cols * sizeof(uint8_t);
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lc->last_coded_q_map = vpx_malloc(last_coded_q_map_size);
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assert(MAXQ <= 255);
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memset(lc->last_coded_q_map, MAXQ, last_coded_q_map_size);
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consec_zero_mv_size = mi_rows * mi_cols * sizeof(uint8_t);
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lc->consec_zero_mv = vpx_malloc(consec_zero_mv_size);
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memset(lc->consec_zero_mv, 0, consec_zero_mv_size);
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}
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}
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}
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// Still have extra buffer for base layer golden frame
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if (!(svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR)
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&& alt_ref_idx < REF_FRAMES)
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svc->layer_context[0].gold_ref_idx = alt_ref_idx;
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}
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// Update the layer context from a change_config() call.
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void vp9_update_layer_context_change_config(VP9_COMP *const cpi,
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const int target_bandwidth) {
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SVC *const svc = &cpi->svc;
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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const RATE_CONTROL *const rc = &cpi->rc;
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int sl, tl, layer = 0, spatial_layer_target;
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float bitrate_alloc = 1.0;
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if (svc->temporal_layering_mode != VP9E_TEMPORAL_LAYERING_MODE_NOLAYERING) {
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for (sl = 0; sl < oxcf->ss_number_layers; ++sl) {
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for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
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layer = LAYER_IDS_TO_IDX(sl, tl, oxcf->ts_number_layers);
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svc->layer_context[layer].target_bandwidth =
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oxcf->layer_target_bitrate[layer];
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}
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layer = LAYER_IDS_TO_IDX(sl, ((oxcf->ts_number_layers - 1) < 0 ?
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0 : (oxcf->ts_number_layers - 1)), oxcf->ts_number_layers);
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spatial_layer_target =
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svc->layer_context[layer].target_bandwidth =
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oxcf->layer_target_bitrate[layer];
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for (tl = 0; tl < oxcf->ts_number_layers; ++tl) {
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LAYER_CONTEXT *const lc =
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&svc->layer_context[sl * oxcf->ts_number_layers + tl];
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RATE_CONTROL *const lrc = &lc->rc;
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lc->spatial_layer_target_bandwidth = spatial_layer_target;
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bitrate_alloc = (float)lc->target_bandwidth / spatial_layer_target;
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lrc->starting_buffer_level =
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(int64_t)(rc->starting_buffer_level * bitrate_alloc);
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lrc->optimal_buffer_level =
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(int64_t)(rc->optimal_buffer_level * bitrate_alloc);
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lrc->maximum_buffer_size =
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(int64_t)(rc->maximum_buffer_size * bitrate_alloc);
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lrc->bits_off_target =
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VPXMIN(lrc->bits_off_target, lrc->maximum_buffer_size);
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lrc->buffer_level = VPXMIN(lrc->buffer_level, lrc->maximum_buffer_size);
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lc->framerate = cpi->framerate / oxcf->ts_rate_decimator[tl];
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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lrc->max_frame_bandwidth = rc->max_frame_bandwidth;
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lrc->worst_quality = rc->worst_quality;
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lrc->best_quality = rc->best_quality;
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}
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}
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} else {
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int layer_end;
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if (svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR) {
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layer_end = svc->number_temporal_layers;
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} else {
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layer_end = svc->number_spatial_layers;
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}
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for (layer = 0; layer < layer_end; ++layer) {
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LAYER_CONTEXT *const lc = &svc->layer_context[layer];
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RATE_CONTROL *const lrc = &lc->rc;
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lc->target_bandwidth = oxcf->layer_target_bitrate[layer];
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bitrate_alloc = (float)lc->target_bandwidth / target_bandwidth;
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// Update buffer-related quantities.
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lrc->starting_buffer_level =
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(int64_t)(rc->starting_buffer_level * bitrate_alloc);
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lrc->optimal_buffer_level =
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(int64_t)(rc->optimal_buffer_level * bitrate_alloc);
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lrc->maximum_buffer_size =
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(int64_t)(rc->maximum_buffer_size * bitrate_alloc);
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lrc->bits_off_target = VPXMIN(lrc->bits_off_target,
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lrc->maximum_buffer_size);
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lrc->buffer_level = VPXMIN(lrc->buffer_level, lrc->maximum_buffer_size);
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// Update framerate-related quantities.
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if (svc->number_temporal_layers > 1 && cpi->oxcf.rc_mode == VPX_CBR) {
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lc->framerate = cpi->framerate / oxcf->ts_rate_decimator[layer];
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} else {
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lc->framerate = cpi->framerate;
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}
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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lrc->max_frame_bandwidth = rc->max_frame_bandwidth;
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// Update qp-related quantities.
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lrc->worst_quality = rc->worst_quality;
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lrc->best_quality = rc->best_quality;
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}
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}
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}
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static LAYER_CONTEXT *get_layer_context(VP9_COMP *const cpi) {
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if (is_one_pass_cbr_svc(cpi))
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return &cpi->svc.layer_context[cpi->svc.spatial_layer_id *
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cpi->svc.number_temporal_layers + cpi->svc.temporal_layer_id];
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else
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return (cpi->svc.number_temporal_layers > 1 &&
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cpi->oxcf.rc_mode == VPX_CBR) ?
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&cpi->svc.layer_context[cpi->svc.temporal_layer_id] :
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&cpi->svc.layer_context[cpi->svc.spatial_layer_id];
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}
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void vp9_update_temporal_layer_framerate(VP9_COMP *const cpi) {
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SVC *const svc = &cpi->svc;
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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LAYER_CONTEXT *const lc = get_layer_context(cpi);
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RATE_CONTROL *const lrc = &lc->rc;
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// Index into spatial+temporal arrays.
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const int st_idx = svc->spatial_layer_id * svc->number_temporal_layers +
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svc->temporal_layer_id;
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const int tl = svc->temporal_layer_id;
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lc->framerate = cpi->framerate / oxcf->ts_rate_decimator[tl];
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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lrc->max_frame_bandwidth = cpi->rc.max_frame_bandwidth;
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// Update the average layer frame size (non-cumulative per-frame-bw).
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if (tl == 0) {
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lc->avg_frame_size = lrc->avg_frame_bandwidth;
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} else {
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const double prev_layer_framerate =
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cpi->framerate / oxcf->ts_rate_decimator[tl - 1];
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const int prev_layer_target_bandwidth =
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oxcf->layer_target_bitrate[st_idx - 1];
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lc->avg_frame_size =
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(int)((lc->target_bandwidth - prev_layer_target_bandwidth) /
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(lc->framerate - prev_layer_framerate));
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}
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}
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void vp9_update_spatial_layer_framerate(VP9_COMP *const cpi, double framerate) {
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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LAYER_CONTEXT *const lc = get_layer_context(cpi);
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RATE_CONTROL *const lrc = &lc->rc;
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lc->framerate = framerate;
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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lrc->min_frame_bandwidth = (int)(lrc->avg_frame_bandwidth *
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oxcf->two_pass_vbrmin_section / 100);
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lrc->max_frame_bandwidth = (int)(((int64_t)lrc->avg_frame_bandwidth *
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oxcf->two_pass_vbrmax_section) / 100);
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vp9_rc_set_gf_interval_range(cpi, lrc);
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}
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void vp9_restore_layer_context(VP9_COMP *const cpi) {
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LAYER_CONTEXT *const lc = get_layer_context(cpi);
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const int old_frame_since_key = cpi->rc.frames_since_key;
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const int old_frame_to_key = cpi->rc.frames_to_key;
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cpi->rc = lc->rc;
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cpi->twopass = lc->twopass;
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cpi->oxcf.target_bandwidth = lc->target_bandwidth;
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cpi->alt_ref_source = lc->alt_ref_source;
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// Reset the frames_since_key and frames_to_key counters to their values
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// before the layer restore. Keep these defined for the stream (not layer).
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if (cpi->svc.number_temporal_layers > 1) {
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cpi->rc.frames_since_key = old_frame_since_key;
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cpi->rc.frames_to_key = old_frame_to_key;
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}
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// For spatial-svc, allow cyclic-refresh to be applied on the spatial layers,
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// for the base temporal layer.
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if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ &&
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cpi->svc.number_spatial_layers > 1 &&
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cpi->svc.temporal_layer_id == 0) {
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CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
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signed char *temp = cr->map;
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uint8_t *temp2 = cr->last_coded_q_map;
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uint8_t *temp3 = cr->consec_zero_mv;
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cr->map = lc->map;
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lc->map = temp;
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cr->last_coded_q_map = lc->last_coded_q_map;
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lc->last_coded_q_map = temp2;
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cr->consec_zero_mv = lc->consec_zero_mv;
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lc->consec_zero_mv = temp3;
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cr->sb_index = lc->sb_index;
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}
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}
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void vp9_save_layer_context(VP9_COMP *const cpi) {
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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LAYER_CONTEXT *const lc = get_layer_context(cpi);
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lc->rc = cpi->rc;
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lc->twopass = cpi->twopass;
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lc->target_bandwidth = (int)oxcf->target_bandwidth;
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lc->alt_ref_source = cpi->alt_ref_source;
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// For spatial-svc, allow cyclic-refresh to be applied on the spatial layers,
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// for the base temporal layer.
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if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ &&
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cpi->svc.number_spatial_layers > 1 &&
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cpi->svc.temporal_layer_id == 0) {
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CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
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signed char *temp = lc->map;
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uint8_t *temp2 = lc->last_coded_q_map;
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uint8_t *temp3 = lc->consec_zero_mv;
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lc->map = cr->map;
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cr->map = temp;
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lc->last_coded_q_map = cr->last_coded_q_map;
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cr->last_coded_q_map = temp2;
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lc->consec_zero_mv = cr->consec_zero_mv;
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cr->consec_zero_mv = temp3;
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lc->sb_index = cr->sb_index;
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}
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}
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void vp9_init_second_pass_spatial_svc(VP9_COMP *cpi) {
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SVC *const svc = &cpi->svc;
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int i;
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for (i = 0; i < svc->number_spatial_layers; ++i) {
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TWO_PASS *const twopass = &svc->layer_context[i].twopass;
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svc->spatial_layer_id = i;
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vp9_init_second_pass(cpi);
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twopass->total_stats.spatial_layer_id = i;
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twopass->total_left_stats.spatial_layer_id = i;
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}
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svc->spatial_layer_id = 0;
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}
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void vp9_inc_frame_in_layer(VP9_COMP *const cpi) {
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LAYER_CONTEXT *const lc =
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&cpi->svc.layer_context[cpi->svc.spatial_layer_id *
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cpi->svc.number_temporal_layers];
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++lc->current_video_frame_in_layer;
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++lc->frames_from_key_frame;
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}
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int vp9_is_upper_layer_key_frame(const VP9_COMP *const cpi) {
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return is_two_pass_svc(cpi) &&
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cpi->svc.spatial_layer_id > 0 &&
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cpi->svc.layer_context[cpi->svc.spatial_layer_id *
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cpi->svc.number_temporal_layers +
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cpi->svc.temporal_layer_id].is_key_frame;
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}
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static void get_layer_resolution(const int width_org, const int height_org,
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const int num, const int den,
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int *width_out, int *height_out) {
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int w, h;
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if (width_out == NULL || height_out == NULL || den == 0)
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return;
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w = width_org * num / den;
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h = height_org * num / den;
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// make height and width even to make chrome player happy
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w += w % 2;
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h += h % 2;
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*width_out = w;
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*height_out = h;
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}
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// The function sets proper ref_frame_flags, buffer indices, and buffer update
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// variables for temporal layering mode 3 - that does 0-2-1-2 temporal layering
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// scheme.
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static void set_flags_and_fb_idx_for_temporal_mode3(VP9_COMP *const cpi) {
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int frame_num_within_temporal_struct = 0;
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int spatial_id, temporal_id;
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spatial_id = cpi->svc.spatial_layer_id = cpi->svc.spatial_layer_to_encode;
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frame_num_within_temporal_struct =
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cpi->svc.layer_context[cpi->svc.spatial_layer_id *
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cpi->svc.number_temporal_layers].current_video_frame_in_layer % 4;
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temporal_id = cpi->svc.temporal_layer_id =
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(frame_num_within_temporal_struct & 1) ? 2 :
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(frame_num_within_temporal_struct >> 1);
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cpi->ext_refresh_last_frame = cpi->ext_refresh_golden_frame =
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cpi->ext_refresh_alt_ref_frame = 0;
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if (!temporal_id) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_last_frame = 1;
|
|
if (!spatial_id) {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else if (cpi->svc.layer_context[temporal_id].is_key_frame) {
|
|
// base layer is a key frame.
|
|
cpi->ref_frame_flags = VP9_GOLD_FLAG;
|
|
} else {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
} else if (temporal_id == 1) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_alt_ref_frame = 1;
|
|
if (!spatial_id) {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
} else {
|
|
if (frame_num_within_temporal_struct == 1) {
|
|
// the first tl2 picture
|
|
if (!spatial_id) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_alt_ref_frame = 1;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else if (spatial_id < cpi->svc.number_spatial_layers - 1) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_alt_ref_frame = 1;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
} else { // Top layer
|
|
cpi->ext_refresh_frame_flags_pending = 0;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
} else {
|
|
// The second tl2 picture
|
|
if (!spatial_id) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
cpi->ext_refresh_last_frame = 1;
|
|
} else if (spatial_id < cpi->svc.number_spatial_layers - 1) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
cpi->ext_refresh_last_frame = 1;
|
|
} else { // top layer
|
|
cpi->ext_refresh_frame_flags_pending = 0;
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
}
|
|
}
|
|
if (temporal_id == 0) {
|
|
cpi->lst_fb_idx = spatial_id;
|
|
if (spatial_id)
|
|
cpi->gld_fb_idx = spatial_id - 1;
|
|
else
|
|
cpi->gld_fb_idx = 0;
|
|
cpi->alt_fb_idx = 0;
|
|
} else if (temporal_id == 1) {
|
|
cpi->lst_fb_idx = spatial_id;
|
|
cpi->gld_fb_idx = cpi->svc.number_spatial_layers + spatial_id - 1;
|
|
cpi->alt_fb_idx = cpi->svc.number_spatial_layers + spatial_id;
|
|
} else if (frame_num_within_temporal_struct == 1) {
|
|
cpi->lst_fb_idx = spatial_id;
|
|
cpi->gld_fb_idx = cpi->svc.number_spatial_layers + spatial_id - 1;
|
|
cpi->alt_fb_idx = cpi->svc.number_spatial_layers + spatial_id;
|
|
} else {
|
|
cpi->lst_fb_idx = cpi->svc.number_spatial_layers + spatial_id;
|
|
cpi->gld_fb_idx = cpi->svc.number_spatial_layers + spatial_id - 1;
|
|
cpi->alt_fb_idx = 0;
|
|
}
|
|
}
|
|
|
|
// The function sets proper ref_frame_flags, buffer indices, and buffer update
|
|
// variables for temporal layering mode 2 - that does 0-1-0-1 temporal layering
|
|
// scheme.
|
|
static void set_flags_and_fb_idx_for_temporal_mode2(VP9_COMP *const cpi) {
|
|
int spatial_id, temporal_id;
|
|
spatial_id = cpi->svc.spatial_layer_id = cpi->svc.spatial_layer_to_encode;
|
|
temporal_id = cpi->svc.temporal_layer_id =
|
|
cpi->svc.layer_context[cpi->svc.spatial_layer_id *
|
|
cpi->svc.number_temporal_layers].current_video_frame_in_layer & 1;
|
|
cpi->ext_refresh_last_frame = cpi->ext_refresh_golden_frame =
|
|
cpi->ext_refresh_alt_ref_frame = 0;
|
|
if (!temporal_id) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_last_frame = 1;
|
|
if (!spatial_id) {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else if (cpi->svc.layer_context[temporal_id].is_key_frame) {
|
|
// base layer is a key frame.
|
|
cpi->ref_frame_flags = VP9_GOLD_FLAG;
|
|
} else {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
} else if (temporal_id == 1) {
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_alt_ref_frame = 1;
|
|
if (!spatial_id) {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
}
|
|
|
|
if (temporal_id == 0) {
|
|
cpi->lst_fb_idx = spatial_id;
|
|
if (spatial_id)
|
|
cpi->gld_fb_idx = spatial_id - 1;
|
|
else
|
|
cpi->gld_fb_idx = 0;
|
|
cpi->alt_fb_idx = 0;
|
|
} else if (temporal_id == 1) {
|
|
cpi->lst_fb_idx = spatial_id;
|
|
cpi->gld_fb_idx = cpi->svc.number_spatial_layers + spatial_id - 1;
|
|
cpi->alt_fb_idx = cpi->svc.number_spatial_layers + spatial_id;
|
|
}
|
|
}
|
|
|
|
// The function sets proper ref_frame_flags, buffer indices, and buffer update
|
|
// variables for temporal layering mode 0 - that has no temporal layering.
|
|
static void set_flags_and_fb_idx_for_temporal_mode_noLayering(
|
|
VP9_COMP *const cpi) {
|
|
int spatial_id;
|
|
spatial_id = cpi->svc.spatial_layer_id = cpi->svc.spatial_layer_to_encode;
|
|
cpi->ext_refresh_last_frame =
|
|
cpi->ext_refresh_golden_frame = cpi->ext_refresh_alt_ref_frame = 0;
|
|
cpi->ext_refresh_frame_flags_pending = 1;
|
|
cpi->ext_refresh_last_frame = 1;
|
|
if (!spatial_id) {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG;
|
|
} else if (cpi->svc.layer_context[0].is_key_frame) {
|
|
cpi->ref_frame_flags = VP9_GOLD_FLAG;
|
|
} else {
|
|
cpi->ref_frame_flags = VP9_LAST_FLAG | VP9_GOLD_FLAG;
|
|
}
|
|
cpi->lst_fb_idx = spatial_id;
|
|
if (spatial_id)
|
|
cpi->gld_fb_idx = spatial_id - 1;
|
|
else
|
|
cpi->gld_fb_idx = 0;
|
|
}
|
|
|
|
int vp9_one_pass_cbr_svc_start_layer(VP9_COMP *const cpi) {
|
|
int width = 0, height = 0;
|
|
LAYER_CONTEXT *lc = NULL;
|
|
|
|
if (cpi->svc.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_0212) {
|
|
set_flags_and_fb_idx_for_temporal_mode3(cpi);
|
|
} else if (cpi->svc.temporal_layering_mode ==
|
|
VP9E_TEMPORAL_LAYERING_MODE_NOLAYERING) {
|
|
set_flags_and_fb_idx_for_temporal_mode_noLayering(cpi);
|
|
} else if (cpi->svc.temporal_layering_mode ==
|
|
VP9E_TEMPORAL_LAYERING_MODE_0101) {
|
|
set_flags_and_fb_idx_for_temporal_mode2(cpi);
|
|
} else if (cpi->svc.temporal_layering_mode ==
|
|
VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
|
|
// In the BYPASS/flexible mode, the encoder is relying on the application
|
|
// to specify, for each spatial layer, the flags and buffer indices for the
|
|
// layering.
|
|
// Note that the check (cpi->ext_refresh_frame_flags_pending == 0) is
|
|
// needed to support the case where the frame flags may be passed in via
|
|
// vpx_codec_encode(), which can be used for the temporal-only svc case.
|
|
if (cpi->ext_refresh_frame_flags_pending == 0) {
|
|
int sl;
|
|
cpi->svc.spatial_layer_id = cpi->svc.spatial_layer_to_encode;
|
|
sl = cpi->svc.spatial_layer_id;
|
|
vp9_apply_encoding_flags(cpi, cpi->svc.ext_frame_flags[sl]);
|
|
cpi->lst_fb_idx = cpi->svc.ext_lst_fb_idx[sl];
|
|
cpi->gld_fb_idx = cpi->svc.ext_gld_fb_idx[sl];
|
|
cpi->alt_fb_idx = cpi->svc.ext_alt_fb_idx[sl];
|
|
}
|
|
}
|
|
|
|
lc = &cpi->svc.layer_context[cpi->svc.spatial_layer_id *
|
|
cpi->svc.number_temporal_layers +
|
|
cpi->svc.temporal_layer_id];
|
|
|
|
// Setting the worst/best_quality via the encoder control: SET_SVC_PARAMETERS,
|
|
// only for non-BYPASS mode for now.
|
|
if (cpi->svc.temporal_layering_mode != VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
|
|
RATE_CONTROL *const lrc = &lc->rc;
|
|
lrc->worst_quality = vp9_quantizer_to_qindex(lc->max_q);
|
|
lrc->best_quality = vp9_quantizer_to_qindex(lc->min_q);
|
|
}
|
|
|
|
get_layer_resolution(cpi->oxcf.width, cpi->oxcf.height,
|
|
lc->scaling_factor_num, lc->scaling_factor_den,
|
|
&width, &height);
|
|
|
|
if (vp9_set_size_literal(cpi, width, height) != 0)
|
|
return VPX_CODEC_INVALID_PARAM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if CONFIG_SPATIAL_SVC
|
|
int vp9_svc_start_frame(VP9_COMP *const cpi) {
|
|
int width = 0, height = 0;
|
|
LAYER_CONTEXT *lc;
|
|
struct lookahead_entry *buf;
|
|
int count = 1 << (cpi->svc.number_temporal_layers - 1);
|
|
|
|
cpi->svc.spatial_layer_id = cpi->svc.spatial_layer_to_encode;
|
|
lc = &cpi->svc.layer_context[cpi->svc.spatial_layer_id];
|
|
|
|
cpi->svc.temporal_layer_id = 0;
|
|
while ((lc->current_video_frame_in_layer % count) != 0) {
|
|
++cpi->svc.temporal_layer_id;
|
|
count >>= 1;
|
|
}
|
|
|
|
cpi->ref_frame_flags = VP9_ALT_FLAG | VP9_GOLD_FLAG | VP9_LAST_FLAG;
|
|
|
|
cpi->lst_fb_idx = cpi->svc.spatial_layer_id;
|
|
|
|
if (cpi->svc.spatial_layer_id == 0)
|
|
cpi->gld_fb_idx = (lc->gold_ref_idx >= 0) ?
|
|
lc->gold_ref_idx : cpi->lst_fb_idx;
|
|
else
|
|
cpi->gld_fb_idx = cpi->svc.spatial_layer_id - 1;
|
|
|
|
if (lc->current_video_frame_in_layer == 0) {
|
|
if (cpi->svc.spatial_layer_id >= 2) {
|
|
cpi->alt_fb_idx = cpi->svc.spatial_layer_id - 2;
|
|
} else {
|
|
cpi->alt_fb_idx = cpi->lst_fb_idx;
|
|
cpi->ref_frame_flags &= (~VP9_LAST_FLAG & ~VP9_ALT_FLAG);
|
|
}
|
|
} else {
|
|
if (cpi->oxcf.ss_enable_auto_arf[cpi->svc.spatial_layer_id]) {
|
|
cpi->alt_fb_idx = lc->alt_ref_idx;
|
|
if (!lc->has_alt_frame)
|
|
cpi->ref_frame_flags &= (~VP9_ALT_FLAG);
|
|
} else {
|
|
// Find a proper alt_fb_idx for layers that don't have alt ref frame
|
|
if (cpi->svc.spatial_layer_id == 0) {
|
|
cpi->alt_fb_idx = cpi->lst_fb_idx;
|
|
} else {
|
|
LAYER_CONTEXT *lc_lower =
|
|
&cpi->svc.layer_context[cpi->svc.spatial_layer_id - 1];
|
|
|
|
if (cpi->oxcf.ss_enable_auto_arf[cpi->svc.spatial_layer_id - 1] &&
|
|
lc_lower->alt_ref_source != NULL)
|
|
cpi->alt_fb_idx = lc_lower->alt_ref_idx;
|
|
else if (cpi->svc.spatial_layer_id >= 2)
|
|
cpi->alt_fb_idx = cpi->svc.spatial_layer_id - 2;
|
|
else
|
|
cpi->alt_fb_idx = cpi->lst_fb_idx;
|
|
}
|
|
}
|
|
}
|
|
|
|
get_layer_resolution(cpi->oxcf.width, cpi->oxcf.height,
|
|
lc->scaling_factor_num, lc->scaling_factor_den,
|
|
&width, &height);
|
|
|
|
// Workaround for multiple frame contexts. In some frames we can't use prev_mi
|
|
// since its previous frame could be changed during decoding time. The idea is
|
|
// we put a empty invisible frame in front of them, then we will not use
|
|
// prev_mi when encoding these frames.
|
|
|
|
buf = vp9_lookahead_peek(cpi->lookahead, 0);
|
|
if (cpi->oxcf.error_resilient_mode == 0 && cpi->oxcf.pass == 2 &&
|
|
cpi->svc.encode_empty_frame_state == NEED_TO_ENCODE &&
|
|
lc->rc.frames_to_key != 0 &&
|
|
!(buf != NULL && (buf->flags & VPX_EFLAG_FORCE_KF))) {
|
|
if ((cpi->svc.number_temporal_layers > 1 &&
|
|
cpi->svc.temporal_layer_id < cpi->svc.number_temporal_layers - 1) ||
|
|
(cpi->svc.number_spatial_layers > 1 &&
|
|
cpi->svc.spatial_layer_id == 0)) {
|
|
struct lookahead_entry *buf = vp9_lookahead_peek(cpi->lookahead, 0);
|
|
|
|
if (buf != NULL) {
|
|
cpi->svc.empty_frame.ts_start = buf->ts_start;
|
|
cpi->svc.empty_frame.ts_end = buf->ts_end;
|
|
cpi->svc.encode_empty_frame_state = ENCODING;
|
|
cpi->common.show_frame = 0;
|
|
cpi->ref_frame_flags = 0;
|
|
cpi->common.frame_type = INTER_FRAME;
|
|
cpi->lst_fb_idx =
|
|
cpi->gld_fb_idx = cpi->alt_fb_idx = SMALL_FRAME_FB_IDX;
|
|
|
|
if (cpi->svc.encode_intra_empty_frame != 0)
|
|
cpi->common.intra_only = 1;
|
|
|
|
width = SMALL_FRAME_WIDTH;
|
|
height = SMALL_FRAME_HEIGHT;
|
|
}
|
|
}
|
|
}
|
|
|
|
cpi->oxcf.worst_allowed_q = vp9_quantizer_to_qindex(lc->max_q);
|
|
cpi->oxcf.best_allowed_q = vp9_quantizer_to_qindex(lc->min_q);
|
|
|
|
vp9_change_config(cpi, &cpi->oxcf);
|
|
|
|
if (vp9_set_size_literal(cpi, width, height) != 0)
|
|
return VPX_CODEC_INVALID_PARAM;
|
|
|
|
vp9_set_high_precision_mv(cpi, 1);
|
|
|
|
cpi->alt_ref_source = get_layer_context(cpi)->alt_ref_source;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
struct lookahead_entry *vp9_svc_lookahead_pop(VP9_COMP *const cpi,
|
|
struct lookahead_ctx *ctx,
|
|
int drain) {
|
|
struct lookahead_entry *buf = NULL;
|
|
if (ctx->sz && (drain || ctx->sz == ctx->max_sz - MAX_PRE_FRAMES)) {
|
|
buf = vp9_lookahead_peek(ctx, 0);
|
|
if (buf != NULL) {
|
|
// Only remove the buffer when pop the highest layer.
|
|
if (cpi->svc.spatial_layer_id == cpi->svc.number_spatial_layers - 1) {
|
|
vp9_lookahead_pop(ctx, drain);
|
|
}
|
|
}
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
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);
|
|
if (lc->consec_zero_mv)
|
|
vpx_free(lc->consec_zero_mv);
|
|
}
|
|
}
|
|
}
|