135 lines
5.3 KiB
C++
135 lines
5.3 KiB
C++
/*
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* Copyright (c) 2018 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 "test/svc_test.h"
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namespace svc_test {
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void OnePassCbrSvc::SetSvcConfig(const int num_spatial_layer,
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const int num_temporal_layer) {
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SetConfig(num_temporal_layer);
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cfg_.ss_number_layers = num_spatial_layer;
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cfg_.ts_number_layers = num_temporal_layer;
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if (num_spatial_layer == 1) {
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svc_params_.scaling_factor_num[0] = 288;
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svc_params_.scaling_factor_den[0] = 288;
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} else if (num_spatial_layer == 2) {
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svc_params_.scaling_factor_num[0] = 144;
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svc_params_.scaling_factor_den[0] = 288;
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svc_params_.scaling_factor_num[1] = 288;
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svc_params_.scaling_factor_den[1] = 288;
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} else if (num_spatial_layer == 3) {
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svc_params_.scaling_factor_num[0] = 72;
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svc_params_.scaling_factor_den[0] = 288;
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svc_params_.scaling_factor_num[1] = 144;
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svc_params_.scaling_factor_den[1] = 288;
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svc_params_.scaling_factor_num[2] = 288;
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svc_params_.scaling_factor_den[2] = 288;
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}
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number_spatial_layers_ = cfg_.ss_number_layers;
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number_temporal_layers_ = cfg_.ts_number_layers;
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}
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void OnePassCbrSvc::PreEncodeFrameHookSetup(::libvpx_test::VideoSource *video,
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::libvpx_test::Encoder *encoder) {
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if (video->frame() == 0) {
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for (int i = 0; i < VPX_MAX_LAYERS; ++i) {
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svc_params_.max_quantizers[i] = 63;
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svc_params_.min_quantizers[i] = 0;
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}
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svc_params_.speed_per_layer[0] = base_speed_setting_;
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for (int i = 1; i < VPX_SS_MAX_LAYERS; ++i) {
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svc_params_.speed_per_layer[i] = speed_setting_;
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}
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encoder->Control(VP9E_SET_SVC, 1);
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encoder->Control(VP9E_SET_SVC_PARAMETERS, &svc_params_);
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encoder->Control(VP8E_SET_CPUUSED, speed_setting_);
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encoder->Control(VP9E_SET_AQ_MODE, 3);
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encoder->Control(VP8E_SET_MAX_INTRA_BITRATE_PCT, 300);
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encoder->Control(VP9E_SET_TILE_COLUMNS, get_msb(cfg_.g_threads));
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encoder->Control(VP9E_SET_ROW_MT, 1);
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encoder->Control(VP8E_SET_STATIC_THRESHOLD, 1);
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}
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superframe_count_++;
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temporal_layer_id_ = 0;
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if (number_temporal_layers_ == 2) {
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temporal_layer_id_ = (superframe_count_ % 2 != 0);
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} else if (number_temporal_layers_ == 3) {
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if (superframe_count_ % 2 != 0) temporal_layer_id_ = 2;
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if (superframe_count_ > 1) {
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if ((superframe_count_ - 2) % 4 == 0) temporal_layer_id_ = 1;
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}
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}
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frame_flags_ = 0;
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}
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void OnePassCbrSvc::PostEncodeFrameHook(::libvpx_test::Encoder *encoder) {
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vpx_svc_layer_id_t layer_id;
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encoder->Control(VP9E_GET_SVC_LAYER_ID, &layer_id);
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temporal_layer_id_ = layer_id.temporal_layer_id;
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for (int sl = 0; sl < number_spatial_layers_; ++sl) {
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for (int tl = temporal_layer_id_; tl < number_temporal_layers_; ++tl) {
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const int layer = sl * number_temporal_layers_ + tl;
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bits_in_buffer_model_[layer] +=
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static_cast<int64_t>(layer_target_avg_bandwidth_[layer]);
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}
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}
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}
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void OnePassCbrSvc::AssignLayerBitrates() {
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int sl, spatial_layer_target;
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int spatial_layers = cfg_.ss_number_layers;
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int temporal_layers = cfg_.ts_number_layers;
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float total = 0;
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float alloc_ratio[VPX_MAX_LAYERS] = { 0 };
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float framerate = 30.0;
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for (sl = 0; sl < spatial_layers; ++sl) {
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if (svc_params_.scaling_factor_den[sl] > 0) {
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alloc_ratio[sl] =
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static_cast<float>((svc_params_.scaling_factor_num[sl] * 1.0 /
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svc_params_.scaling_factor_den[sl]));
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total += alloc_ratio[sl];
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}
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}
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for (sl = 0; sl < spatial_layers; ++sl) {
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cfg_.ss_target_bitrate[sl] = spatial_layer_target =
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static_cast<unsigned int>(cfg_.rc_target_bitrate * alloc_ratio[sl] /
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total);
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const int index = sl * temporal_layers;
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if (cfg_.temporal_layering_mode == 3) {
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cfg_.layer_target_bitrate[index] = spatial_layer_target >> 1;
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cfg_.layer_target_bitrate[index + 1] =
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(spatial_layer_target >> 1) + (spatial_layer_target >> 2);
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cfg_.layer_target_bitrate[index + 2] = spatial_layer_target;
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} else if (cfg_.temporal_layering_mode == 2) {
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cfg_.layer_target_bitrate[index] = spatial_layer_target * 2 / 3;
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cfg_.layer_target_bitrate[index + 1] = spatial_layer_target;
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} else if (cfg_.temporal_layering_mode <= 1) {
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cfg_.layer_target_bitrate[index] = spatial_layer_target;
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}
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}
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for (sl = 0; sl < spatial_layers; ++sl) {
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for (int tl = 0; tl < temporal_layers; ++tl) {
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const int layer = sl * temporal_layers + tl;
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float layer_framerate = framerate;
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if (temporal_layers == 2 && tl == 0) layer_framerate = framerate / 2;
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if (temporal_layers == 3 && tl == 0) layer_framerate = framerate / 4;
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if (temporal_layers == 3 && tl == 1) layer_framerate = framerate / 2;
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layer_target_avg_bandwidth_[layer] = static_cast<int>(
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cfg_.layer_target_bitrate[layer] * 1000.0 / layer_framerate);
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bits_in_buffer_model_[layer] =
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cfg_.layer_target_bitrate[layer] * cfg_.rc_buf_initial_sz;
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}
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}
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}
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} // namespace svc_test
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