diff options
Diffstat (limited to 'media/libvpx/libvpx/test/svc_test.cc')
| -rw-r--r-- | media/libvpx/libvpx/test/svc_test.cc | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/test/svc_test.cc b/media/libvpx/libvpx/test/svc_test.cc new file mode 100644 index 0000000000..cbc0abe032 --- /dev/null +++ b/media/libvpx/libvpx/test/svc_test.cc @@ -0,0 +1,135 @@ +/* + * 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; + } + if (number_temporal_layers_ > 1 || number_spatial_layers_ > 1) { + 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 |