ref: 546c273f1ac139a5e30a790396ed28073b3e3bff
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::SetSvcConfig(const int num_spatial_layer, const int num_temporal_layer) { SetConfig(num_temporal_layer); cfg_.ss_number_layers = num_spatial_layer; cfg_.ts_number_layers = num_temporal_layer; if (num_spatial_layer == 1) { svc_params_.scaling_factor_num[0] = 288; svc_params_.scaling_factor_den[0] = 288; } else if (num_spatial_layer == 2) { svc_params_.scaling_factor_num[0] = 144; svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_num[1] = 288; svc_params_.scaling_factor_den[1] = 288; } else if (num_spatial_layer == 3) { svc_params_.scaling_factor_num[0] = 72; svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_num[1] = 144; svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_num[2] = 288; svc_params_.scaling_factor_den[2] = 288; } number_spatial_layers_ = cfg_.ss_number_layers; number_temporal_layers_ = cfg_.ts_number_layers; } 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