ref: 2f3c1b521fd3c099c2351e9e6e5eb074fb0118fa
dir: /test/svc_test.cc/
/*
* Copyright (c) 2018 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "test/svc_test.h"
namespace svc_test {
void OnePassCbrSvc::PreEncodeFrameHookSetup(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) {
if (video->frame() == 0) {
for (int i = 0; i < VPX_MAX_LAYERS; ++i) {
svc_params_.max_quantizers[i] = 63;
svc_params_.min_quantizers[i] = 0;
}
svc_params_.speed_per_layer[0] = base_speed_setting_;
for (int i = 1; i < VPX_SS_MAX_LAYERS; ++i) {
svc_params_.speed_per_layer[i] = speed_setting_;
}
encoder->Control(VP9E_SET_SVC, 1);
encoder->Control(VP9E_SET_SVC_PARAMETERS, &svc_params_);
encoder->Control(VP8E_SET_CPUUSED, speed_setting_);
encoder->Control(VP9E_SET_AQ_MODE, 3);
encoder->Control(VP8E_SET_MAX_INTRA_BITRATE_PCT, 300);
encoder->Control(VP9E_SET_TILE_COLUMNS, get_msb(cfg_.g_threads));
encoder->Control(VP9E_SET_ROW_MT, 1);
encoder->Control(VP8E_SET_STATIC_THRESHOLD, 1);
}
superframe_count_++;
temporal_layer_id_ = 0;
if (number_temporal_layers_ == 2) {
temporal_layer_id_ = (superframe_count_ % 2 != 0);
} else if (number_temporal_layers_ == 3) {
if (superframe_count_ % 2 != 0) temporal_layer_id_ = 2;
if (superframe_count_ > 1) {
if ((superframe_count_ - 2) % 4 == 0) temporal_layer_id_ = 1;
}
}
frame_flags_ = 0;
}
void OnePassCbrSvc::PostEncodeFrameHook(::libvpx_test::Encoder *encoder) {
vpx_svc_layer_id_t layer_id;
encoder->Control(VP9E_GET_SVC_LAYER_ID, &layer_id);
temporal_layer_id_ = layer_id.temporal_layer_id;
for (int sl = 0; sl < number_spatial_layers_; ++sl) {
for (int tl = temporal_layer_id_; tl < number_temporal_layers_; ++tl) {
const int layer = sl * number_temporal_layers_ + tl;
bits_in_buffer_model_[layer] +=
static_cast<int64_t>(layer_target_avg_bandwidth_[layer]);
}
}
}
void OnePassCbrSvc::AssignLayerBitrates() {
int sl, spatial_layer_target;
int spatial_layers = cfg_.ss_number_layers;
int temporal_layers = cfg_.ts_number_layers;
float total = 0;
float alloc_ratio[VPX_MAX_LAYERS] = { 0 };
float framerate = 30.0;
for (sl = 0; sl < spatial_layers; ++sl) {
if (svc_params_.scaling_factor_den[sl] > 0) {
alloc_ratio[sl] =
static_cast<float>((svc_params_.scaling_factor_num[sl] * 1.0 /
svc_params_.scaling_factor_den[sl]));
total += alloc_ratio[sl];
}
}
for (sl = 0; sl < spatial_layers; ++sl) {
cfg_.ss_target_bitrate[sl] = spatial_layer_target =
static_cast<unsigned int>(cfg_.rc_target_bitrate * alloc_ratio[sl] /
total);
const int index = sl * temporal_layers;
if (cfg_.temporal_layering_mode == 3) {
cfg_.layer_target_bitrate[index] = spatial_layer_target >> 1;
cfg_.layer_target_bitrate[index + 1] =
(spatial_layer_target >> 1) + (spatial_layer_target >> 2);
cfg_.layer_target_bitrate[index + 2] = spatial_layer_target;
} else if (cfg_.temporal_layering_mode == 2) {
cfg_.layer_target_bitrate[index] = spatial_layer_target * 2 / 3;
cfg_.layer_target_bitrate[index + 1] = spatial_layer_target;
} else if (cfg_.temporal_layering_mode <= 1) {
cfg_.layer_target_bitrate[index] = spatial_layer_target;
}
}
for (sl = 0; sl < spatial_layers; ++sl) {
for (int tl = 0; tl < temporal_layers; ++tl) {
const int layer = sl * temporal_layers + tl;
float layer_framerate = framerate;
if (temporal_layers == 2 && tl == 0) layer_framerate = framerate / 2;
if (temporal_layers == 3 && tl == 0) layer_framerate = framerate / 4;
if (temporal_layers == 3 && tl == 1) layer_framerate = framerate / 2;
layer_target_avg_bandwidth_[layer] = static_cast<int>(
cfg_.layer_target_bitrate[layer] * 1000.0 / layer_framerate);
bits_in_buffer_model_[layer] =
cfg_.layer_target_bitrate[layer] * cfg_.rc_buf_initial_sz;
}
}
}
} // namespace svc_test