diff options
Diffstat (limited to 'vp9/ratectrl_rtc.cc')
| -rw-r--r-- | vp9/ratectrl_rtc.cc | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/vp9/ratectrl_rtc.cc b/vp9/ratectrl_rtc.cc new file mode 100644 index 000000000..3d6afc5d0 --- /dev/null +++ b/vp9/ratectrl_rtc.cc @@ -0,0 +1,173 @@ +/* + * Copyright (c) 2020 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 "vp9/ratectrl_rtc.h" + +#include <new> + +#include "vp9/encoder/vp9_encoder.h" +#include "vp9/encoder/vp9_picklpf.h" +#include "vpx/vp8cx.h" +#include "vpx/vpx_codec.h" + +namespace libvpx { + +std::unique_ptr<VP9RateControlRTC> VP9RateControlRTC::Create( + const VP9RateControlRtcConfig &cfg) { + std::unique_ptr<VP9RateControlRTC> rc_api(new (std::nothrow) + VP9RateControlRTC()); + if (!rc_api) return nullptr; + rc_api->cpi_ = static_cast<VP9_COMP *>(vpx_memalign(32, sizeof(*cpi_))); + if (rc_api->cpi_ == nullptr) { + return nullptr; + } + rc_api->InitRateControl(cfg); + return rc_api; +} + +void VP9RateControlRTC::InitRateControl(const VP9RateControlRtcConfig &rc_cfg) { + VP9_COMMON *cm = &cpi_->common; + VP9EncoderConfig *oxcf = &cpi_->oxcf; + RATE_CONTROL *const rc = &cpi_->rc; + cm->profile = PROFILE_0; + cm->bit_depth = VPX_BITS_8; + cm->show_frame = 1; + oxcf->rc_mode = VPX_CBR; + oxcf->pass = 0; + oxcf->aq_mode = NO_AQ; + oxcf->content = VP9E_CONTENT_DEFAULT; + oxcf->drop_frames_water_mark = 0; + + UpdateRateControl(rc_cfg); + + cpi_->use_svc = (cpi_->svc.number_spatial_layers > 1 || + cpi_->svc.number_temporal_layers > 1) + ? 1 + : 0; + + rc->rc_1_frame = 0; + rc->rc_2_frame = 0; + vp9_rc_init_minq_luts(); + vp9_rc_init(oxcf, 0, rc); + cpi_->sf.use_nonrd_pick_mode = 1; + cm->current_video_frame = 0; +} + +void VP9RateControlRTC::UpdateRateControl( + const VP9RateControlRtcConfig &rc_cfg) { + VP9_COMMON *cm = &cpi_->common; + VP9EncoderConfig *oxcf = &cpi_->oxcf; + RATE_CONTROL *const rc = &cpi_->rc; + + cm->width = rc_cfg.width; + cm->height = rc_cfg.height; + oxcf->width = rc_cfg.width; + oxcf->height = rc_cfg.height; + oxcf->worst_allowed_q = vp9_quantizer_to_qindex(rc_cfg.max_quantizer); + oxcf->best_allowed_q = vp9_quantizer_to_qindex(rc_cfg.min_quantizer); + rc->worst_quality = oxcf->worst_allowed_q; + rc->best_quality = oxcf->best_allowed_q; + oxcf->target_bandwidth = 1000 * rc_cfg.target_bandwidth; + oxcf->starting_buffer_level_ms = rc_cfg.buf_initial_sz; + oxcf->optimal_buffer_level_ms = rc_cfg.buf_optimal_sz; + oxcf->maximum_buffer_size_ms = rc_cfg.buf_sz; + oxcf->under_shoot_pct = rc_cfg.undershoot_pct; + oxcf->over_shoot_pct = rc_cfg.overshoot_pct; + oxcf->ss_number_layers = rc_cfg.ss_number_layers; + oxcf->ts_number_layers = rc_cfg.ts_number_layers; + oxcf->temporal_layering_mode = (VP9E_TEMPORAL_LAYERING_MODE)( + (rc_cfg.ts_number_layers > 1) ? rc_cfg.ts_number_layers : 0); + + cpi_->oxcf.rc_max_intra_bitrate_pct = rc_cfg.max_intra_bitrate_pct; + cpi_->framerate = rc_cfg.framerate; + cpi_->svc.number_spatial_layers = rc_cfg.ss_number_layers; + cpi_->svc.number_temporal_layers = rc_cfg.ts_number_layers; + + for (int sl = 0; sl < cpi_->svc.number_spatial_layers; ++sl) { + for (int tl = 0; tl < cpi_->svc.number_temporal_layers; ++tl) { + const int layer = + LAYER_IDS_TO_IDX(sl, tl, cpi_->svc.number_temporal_layers); + LAYER_CONTEXT *lc = &cpi_->svc.layer_context[layer]; + RATE_CONTROL *const lrc = &lc->rc; + oxcf->layer_target_bitrate[layer] = + 1000 * rc_cfg.layer_target_bitrate[layer]; + lrc->worst_quality = + vp9_quantizer_to_qindex(rc_cfg.max_quantizers[layer]); + lrc->best_quality = vp9_quantizer_to_qindex(rc_cfg.min_quantizers[layer]); + lc->scaling_factor_num = rc_cfg.scaling_factor_num[sl]; + lc->scaling_factor_den = rc_cfg.scaling_factor_den[sl]; + oxcf->ts_rate_decimator[tl] = rc_cfg.ts_rate_decimator[tl]; + } + } + vp9_set_rc_buffer_sizes(cpi_); + vp9_new_framerate(cpi_, cpi_->framerate); + if (cpi_->svc.number_temporal_layers > 1) { + if (cm->current_video_frame == 0) vp9_init_layer_context(cpi_); + vp9_update_layer_context_change_config(cpi_, + (int)cpi_->oxcf.target_bandwidth); + } + vp9_check_reset_rc_flag(cpi_); +} + +void VP9RateControlRTC::ComputeQP(const VP9FrameParamsQpRTC &frame_params) { + VP9_COMMON *const cm = &cpi_->common; + int width, height; + cpi_->svc.spatial_layer_id = frame_params.spatial_layer_id; + cpi_->svc.temporal_layer_id = frame_params.temporal_layer_id; + if (cpi_->svc.number_spatial_layers > 1) { + const int layer = LAYER_IDS_TO_IDX(cpi_->svc.spatial_layer_id, + cpi_->svc.temporal_layer_id, + cpi_->svc.number_temporal_layers); + LAYER_CONTEXT *lc = &cpi_->svc.layer_context[layer]; + get_layer_resolution(cpi_->oxcf.width, cpi_->oxcf.height, + lc->scaling_factor_num, lc->scaling_factor_den, &width, + &height); + cm->width = width; + cm->height = height; + } + vp9_set_mb_mi(cm, cm->width, cm->height); + cm->frame_type = frame_params.frame_type; + cpi_->refresh_golden_frame = (cm->frame_type == KEY_FRAME) ? 1 : 0; + cpi_->sf.use_nonrd_pick_mode = 1; + if (cpi_->svc.number_spatial_layers == 1 && + cpi_->svc.number_temporal_layers == 1) { + int target; + if (frame_is_intra_only(cm)) + target = vp9_calc_iframe_target_size_one_pass_cbr(cpi_); + else + target = vp9_calc_pframe_target_size_one_pass_cbr(cpi_); + vp9_rc_set_frame_target(cpi_, target); + vp9_update_buffer_level_preencode(cpi_); + } else { + vp9_update_temporal_layer_framerate(cpi_); + vp9_restore_layer_context(cpi_); + vp9_rc_get_svc_params(cpi_); + } + int bottom_index, top_index; + cpi_->common.base_qindex = + vp9_rc_pick_q_and_bounds(cpi_, &bottom_index, &top_index); +} + +int VP9RateControlRTC::GetQP() const { return cpi_->common.base_qindex; } + +int VP9RateControlRTC::GetLoopfilterLevel() const { + struct loopfilter *const lf = &cpi_->common.lf; + vp9_pick_filter_level(NULL, cpi_, LPF_PICK_FROM_Q); + return lf->filter_level; +} + +void VP9RateControlRTC::PostEncodeUpdate(uint64_t encoded_frame_size) { + vp9_rc_postencode_update(cpi_, encoded_frame_size); + if (cpi_->svc.number_spatial_layers > 1 || + cpi_->svc.number_temporal_layers > 1) + vp9_save_layer_context(cpi_); + cpi_->common.current_video_frame++; +} + +} // namespace libvpx |