2014-03-13 18:26:52 +01:00
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/*
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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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2014-04-19 03:27:47 +02:00
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#include "vp9/encoder/vp9_encoder.h"
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2014-03-13 18:26:52 +01:00
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#include "vp9/encoder/vp9_svc_layercontext.h"
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2014-06-24 23:01:17 +02:00
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#include "vp9/encoder/vp9_extend.h"
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2014-03-13 18:26:52 +01:00
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void vp9_init_layer_context(VP9_COMP *const cpi) {
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2014-04-07 20:31:26 +02:00
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SVC *const svc = &cpi->svc;
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2014-04-18 20:01:36 +02:00
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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2014-03-21 21:56:15 +01:00
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int layer;
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2014-03-27 23:46:32 +01:00
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int layer_end;
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2014-07-14 20:24:17 +02:00
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int alt_ref_idx = svc->number_spatial_layers;
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2014-03-21 21:56:15 +01:00
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2014-04-07 20:31:26 +02:00
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svc->spatial_layer_id = 0;
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svc->temporal_layer_id = 0;
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2014-03-27 23:46:32 +01:00
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2014-04-07 20:31:26 +02:00
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if (svc->number_temporal_layers > 1) {
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layer_end = svc->number_temporal_layers;
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2014-03-27 23:46:32 +01:00
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} else {
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2014-04-07 20:31:26 +02:00
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layer_end = svc->number_spatial_layers;
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2014-03-27 23:46:32 +01:00
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}
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for (layer = 0; layer < layer_end; ++layer) {
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2014-04-07 20:31:26 +02:00
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LAYER_CONTEXT *const lc = &svc->layer_context[layer];
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2014-03-13 18:26:52 +01:00
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RATE_CONTROL *const lrc = &lc->rc;
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2014-06-09 17:25:31 +02:00
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int i;
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2014-03-28 00:59:44 +01:00
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lc->current_video_frame_in_layer = 0;
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2014-04-09 04:43:08 +02:00
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lrc->ni_av_qi = oxcf->worst_allowed_q;
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2014-03-13 18:26:52 +01:00
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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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2014-06-09 17:25:31 +02:00
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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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2014-07-14 20:24:17 +02:00
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lc->layer_size = 0;
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2014-03-27 23:46:32 +01:00
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2014-04-07 20:31:26 +02:00
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if (svc->number_temporal_layers > 1) {
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2014-05-24 03:11:07 +02:00
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lc->target_bandwidth = oxcf->ts_target_bitrate[layer];
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2014-04-09 04:43:08 +02:00
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lrc->last_q[INTER_FRAME] = oxcf->worst_allowed_q;
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2014-07-14 20:24:17 +02:00
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lrc->avg_frame_qindex[INTER_FRAME] = oxcf->worst_allowed_q;
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2014-03-27 23:46:32 +01:00
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} else {
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2014-05-24 03:11:07 +02:00
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lc->target_bandwidth = oxcf->ss_target_bitrate[layer];
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2014-05-28 03:19:19 +02:00
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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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2014-07-14 20:24:17 +02:00
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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_play_alternate[layer])
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lc->alt_ref_idx = alt_ref_idx++;
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else
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lc->alt_ref_idx = -1;
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2014-03-27 23:46:32 +01:00
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}
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2014-06-03 22:56:46 +02:00
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lrc->buffer_level = vp9_rescale((int)(oxcf->starting_buffer_level_ms),
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2014-03-21 21:56:15 +01:00
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lc->target_bandwidth, 1000);
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2014-03-13 18:26:52 +01:00
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lrc->bits_off_target = lrc->buffer_level;
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}
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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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2014-04-07 20:31:26 +02:00
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SVC *const svc = &cpi->svc;
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2014-04-18 20:01:36 +02:00
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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2014-03-13 18:26:52 +01:00
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const RATE_CONTROL *const rc = &cpi->rc;
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2014-03-21 21:56:15 +01:00
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int layer;
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2014-03-27 23:46:32 +01:00
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int layer_end;
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2014-03-13 18:26:52 +01:00
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float bitrate_alloc = 1.0;
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2014-03-21 21:56:15 +01:00
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2014-04-07 20:31:26 +02:00
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if (svc->number_temporal_layers > 1) {
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layer_end = svc->number_temporal_layers;
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2014-03-27 23:46:32 +01:00
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} else {
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2014-04-07 20:31:26 +02:00
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layer_end = svc->number_spatial_layers;
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2014-03-27 23:46:32 +01:00
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}
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for (layer = 0; layer < layer_end; ++layer) {
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2014-04-07 20:31:26 +02:00
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LAYER_CONTEXT *const lc = &svc->layer_context[layer];
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2014-03-13 18:26:52 +01:00
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RATE_CONTROL *const lrc = &lc->rc;
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2014-03-27 23:46:32 +01:00
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2014-04-07 20:31:26 +02:00
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if (svc->number_temporal_layers > 1) {
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2014-05-24 03:11:07 +02:00
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lc->target_bandwidth = oxcf->ts_target_bitrate[layer];
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2014-03-27 23:46:32 +01:00
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} else {
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2014-05-24 03:11:07 +02:00
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lc->target_bandwidth = oxcf->ss_target_bitrate[layer];
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2014-03-27 23:46:32 +01:00
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}
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2014-03-21 21:56:15 +01:00
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bitrate_alloc = (float)lc->target_bandwidth / target_bandwidth;
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2014-03-13 18:26:52 +01:00
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// Update buffer-related quantities.
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2014-06-03 22:56:46 +02:00
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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 = MIN(lrc->bits_off_target, lrc->maximum_buffer_size);
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lrc->buffer_level = MIN(lrc->buffer_level, lrc->maximum_buffer_size);
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2014-03-13 18:26:52 +01:00
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// Update framerate-related quantities.
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2014-04-07 20:31:26 +02:00
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if (svc->number_temporal_layers > 1) {
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2014-03-27 23:46:32 +01:00
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lc->framerate = oxcf->framerate / oxcf->ts_rate_decimator[layer];
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} else {
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lc->framerate = oxcf->framerate;
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}
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2014-04-10 20:28:29 +02:00
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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2014-03-13 18:26:52 +01:00
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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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2014-03-28 00:59:44 +01:00
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static LAYER_CONTEXT *get_layer_context(SVC *svc) {
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return svc->number_temporal_layers > 1 ?
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&svc->layer_context[svc->temporal_layer_id] :
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&svc->layer_context[svc->spatial_layer_id];
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2014-03-21 21:56:15 +01:00
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}
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2014-03-27 23:46:32 +01:00
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void vp9_update_temporal_layer_framerate(VP9_COMP *const cpi) {
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2014-04-07 20:31:26 +02:00
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SVC *const svc = &cpi->svc;
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2014-04-18 20:01:36 +02:00
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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2014-04-07 20:31:26 +02:00
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LAYER_CONTEXT *const lc = get_layer_context(svc);
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2014-03-13 18:26:52 +01:00
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RATE_CONTROL *const lrc = &lc->rc;
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2014-04-07 20:31:26 +02:00
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const int layer = svc->temporal_layer_id;
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2014-03-21 21:56:15 +01:00
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lc->framerate = oxcf->framerate / oxcf->ts_rate_decimator[layer];
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2014-04-10 20:28:29 +02:00
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lrc->avg_frame_bandwidth = (int)(lc->target_bandwidth / lc->framerate);
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2014-03-13 18:26:52 +01:00
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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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2014-03-21 21:56:15 +01:00
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if (layer == 0) {
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2014-04-10 20:28:29 +02:00
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lc->avg_frame_size = lrc->avg_frame_bandwidth;
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2014-03-13 18:26:52 +01:00
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} else {
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2014-03-21 21:56:15 +01:00
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const double prev_layer_framerate =
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oxcf->framerate / oxcf->ts_rate_decimator[layer - 1];
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2014-05-24 03:11:07 +02:00
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const int prev_layer_target_bandwidth = oxcf->ts_target_bitrate[layer - 1];
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2014-03-13 18:26:52 +01:00
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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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2014-03-27 23:46:32 +01:00
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void vp9_update_spatial_layer_framerate(VP9_COMP *const cpi, double framerate) {
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2014-04-18 20:01:36 +02:00
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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2014-03-28 00:59:44 +01:00
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LAYER_CONTEXT *const lc = get_layer_context(&cpi->svc);
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2014-03-27 23:46:32 +01:00
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RATE_CONTROL *const lrc = &lc->rc;
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lc->framerate = framerate;
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2014-04-10 20:28:29 +02:00
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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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2014-03-27 23:46:32 +01:00
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oxcf->two_pass_vbrmin_section / 100);
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2014-04-10 20:28:29 +02:00
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lrc->max_frame_bandwidth = (int)(((int64_t)lrc->avg_frame_bandwidth *
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2014-03-27 23:46:32 +01:00
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oxcf->two_pass_vbrmax_section) / 100);
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2014-07-14 20:24:17 +02:00
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vp9_rc_set_gf_max_interval(cpi, lrc);
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2014-03-27 23:46:32 +01:00
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}
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2014-03-13 18:26:52 +01:00
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void vp9_restore_layer_context(VP9_COMP *const cpi) {
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2014-03-28 00:59:44 +01:00
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LAYER_CONTEXT *const lc = get_layer_context(&cpi->svc);
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2014-03-21 21:56:15 +01:00
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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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2014-03-13 18:26:52 +01:00
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cpi->rc = lc->rc;
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2014-03-28 00:59:44 +01:00
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cpi->twopass = lc->twopass;
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2014-03-13 18:26:52 +01:00
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cpi->oxcf.target_bandwidth = lc->target_bandwidth;
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2014-07-14 20:24:17 +02:00
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cpi->alt_ref_source = lc->alt_ref_source;
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2014-03-13 18:26:52 +01:00
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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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2014-03-28 00:59:44 +01:00
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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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2014-03-13 18:26:52 +01:00
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}
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void vp9_save_layer_context(VP9_COMP *const cpi) {
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2014-04-18 20:01:36 +02:00
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const VP9EncoderConfig *const oxcf = &cpi->oxcf;
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2014-03-28 00:59:44 +01:00
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LAYER_CONTEXT *const lc = get_layer_context(&cpi->svc);
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2014-03-21 21:56:15 +01:00
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2014-03-13 18:26:52 +01:00
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lc->rc = cpi->rc;
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2014-03-28 00:59:44 +01:00
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lc->twopass = cpi->twopass;
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2014-03-21 21:56:15 +01:00
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lc->target_bandwidth = (int)oxcf->target_bandwidth;
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2014-07-14 20:24:17 +02:00
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lc->alt_ref_source = cpi->alt_ref_source;
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2014-03-13 18:26:52 +01:00
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}
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2014-03-28 00:59:44 +01:00
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void vp9_init_second_pass_spatial_svc(VP9_COMP *cpi) {
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2014-04-07 20:31:26 +02:00
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SVC *const svc = &cpi->svc;
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2014-03-28 00:59:44 +01:00
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int i;
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2014-04-07 20:31:26 +02:00
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for (i = 0; i < svc->number_spatial_layers; ++i) {
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2014-05-16 12:31:30 +02:00
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TWO_PASS *const twopass = &svc->layer_context[i].twopass;
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2014-04-07 20:31:26 +02:00
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svc->spatial_layer_id = i;
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2014-03-28 00:59:44 +01:00
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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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2014-04-07 20:31:26 +02:00
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svc->spatial_layer_id = 0;
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2014-03-28 00:59:44 +01:00
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}
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2014-04-09 03:59:09 +02:00
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void vp9_inc_frame_in_layer(SVC *svc) {
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LAYER_CONTEXT *const lc = (svc->number_temporal_layers > 1)
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? &svc->layer_context[svc->temporal_layer_id]
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: &svc->layer_context[svc->spatial_layer_id];
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++lc->current_video_frame_in_layer;
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}
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2014-04-24 22:31:46 +02:00
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2014-05-08 03:12:13 +02:00
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int vp9_is_upper_layer_key_frame(const VP9_COMP *const cpi) {
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2014-05-01 20:41:01 +02:00
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return cpi->use_svc &&
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cpi->svc.number_temporal_layers == 1 &&
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cpi->svc.spatial_layer_id > 0 &&
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cpi->svc.layer_context[cpi->svc.spatial_layer_id].is_key_frame;
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2014-04-24 22:31:46 +02:00
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}
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2014-06-24 23:01:17 +02:00
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2014-07-22 19:05:40 +02:00
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#if CONFIG_SPATIAL_SVC
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2014-06-24 23:01:17 +02:00
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int vp9_svc_lookahead_push(const VP9_COMP *const cpi, struct lookahead_ctx *ctx,
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YV12_BUFFER_CONFIG *src, int64_t ts_start,
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int64_t ts_end, unsigned int flags) {
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struct lookahead_entry *buf;
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int i, index;
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if (vp9_lookahead_push(ctx, src, ts_start, ts_end, flags))
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return 1;
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index = ctx->write_idx - 1;
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if (index < 0)
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index += ctx->max_sz;
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buf = ctx->buf + index;
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|
|
|
|
|
|
|
if (buf == NULL)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
// Store svc parameters for each layer
|
|
|
|
for (i = 0; i < cpi->svc.number_spatial_layers; ++i)
|
|
|
|
buf->svc_params[i] = cpi->svc.layer_context[i].svc_params_received;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int copy_svc_params(VP9_COMP *const cpi, struct lookahead_entry *buf) {
|
|
|
|
int layer_id;
|
|
|
|
vpx_svc_parameters_t *layer_param;
|
2014-07-14 20:24:17 +02:00
|
|
|
LAYER_CONTEXT *lc;
|
2014-06-24 23:01:17 +02:00
|
|
|
|
|
|
|
// Find the next layer to be encoded
|
|
|
|
for (layer_id = 0; layer_id < cpi->svc.number_spatial_layers; ++layer_id) {
|
|
|
|
if (buf->svc_params[layer_id].spatial_layer >=0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (layer_id == cpi->svc.number_spatial_layers)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
layer_param = &buf->svc_params[layer_id];
|
|
|
|
cpi->svc.spatial_layer_id = layer_param->spatial_layer;
|
|
|
|
cpi->svc.temporal_layer_id = layer_param->temporal_layer;
|
2014-07-14 20:24:17 +02:00
|
|
|
|
|
|
|
cpi->lst_fb_idx = cpi->svc.spatial_layer_id;
|
|
|
|
|
|
|
|
if (cpi->svc.spatial_layer_id < 1)
|
|
|
|
cpi->gld_fb_idx = cpi->lst_fb_idx;
|
|
|
|
else
|
|
|
|
cpi->gld_fb_idx = cpi->svc.spatial_layer_id - 1;
|
|
|
|
|
|
|
|
lc = &cpi->svc.layer_context[cpi->svc.spatial_layer_id];
|
|
|
|
|
|
|
|
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;
|
|
|
|
} else {
|
|
|
|
if (cpi->oxcf.ss_play_alternate[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_play_alternate[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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2014-06-24 23:01:17 +02:00
|
|
|
|
|
|
|
if (vp9_set_size_literal(cpi, layer_param->width, layer_param->height) != 0)
|
|
|
|
return VPX_CODEC_INVALID_PARAM;
|
|
|
|
|
|
|
|
cpi->oxcf.worst_allowed_q =
|
|
|
|
vp9_quantizer_to_qindex(layer_param->max_quantizer);
|
|
|
|
cpi->oxcf.best_allowed_q =
|
|
|
|
vp9_quantizer_to_qindex(layer_param->min_quantizer);
|
|
|
|
|
|
|
|
vp9_change_config(cpi, &cpi->oxcf);
|
|
|
|
|
|
|
|
vp9_set_high_precision_mv(cpi, 1);
|
|
|
|
|
2014-07-14 20:24:17 +02:00
|
|
|
cpi->alt_ref_source = get_layer_context(&cpi->svc)->alt_ref_source;
|
2014-06-24 23:01:17 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct lookahead_entry *vp9_svc_lookahead_peek(VP9_COMP *const cpi,
|
|
|
|
struct lookahead_ctx *ctx,
|
|
|
|
int index, int copy_params) {
|
|
|
|
struct lookahead_entry *buf = vp9_lookahead_peek(ctx, index);
|
|
|
|
|
|
|
|
if (buf != NULL && copy_params != 0) {
|
|
|
|
if (copy_svc_params(cpi, buf) != 0)
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
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_svc_lookahead_peek(cpi, ctx, 0, 1);
|
|
|
|
if (buf != NULL) {
|
|
|
|
// Only remove the buffer when pop the highest layer. Simply set the
|
|
|
|
// spatial_layer to -1 for lower layers.
|
|
|
|
buf->svc_params[cpi->svc.spatial_layer_id].spatial_layer = -1;
|
|
|
|
if (cpi->svc.spatial_layer_id == cpi->svc.number_spatial_layers - 1) {
|
|
|
|
vp9_lookahead_pop(ctx, drain);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return buf;
|
|
|
|
}
|
2014-07-22 19:05:40 +02:00
|
|
|
#endif
|