231 lines
8.7 KiB
C++
231 lines
8.7 KiB
C++
/*
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* Copyright (c) 2020 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 "vp9/ratectrl_rtc.h"
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#include <new>
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#include "vp9/common/vp9_common.h"
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#include "vp9/encoder/vp9_encoder.h"
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#include "vp9/encoder/vp9_picklpf.h"
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#include "vpx/vp8cx.h"
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#include "vpx/vpx_codec.h"
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namespace libvpx {
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std::unique_ptr<VP9RateControlRTC> VP9RateControlRTC::Create(
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const VP9RateControlRtcConfig &cfg) {
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std::unique_ptr<VP9RateControlRTC> rc_api(new (std::nothrow)
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VP9RateControlRTC());
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if (!rc_api) return nullptr;
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rc_api->cpi_ = static_cast<VP9_COMP *>(vpx_memalign(32, sizeof(*cpi_)));
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if (!rc_api->cpi_) {
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rc_api.reset();
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return nullptr;
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}
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vp9_zero(*rc_api->cpi_);
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rc_api->InitRateControl(cfg);
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if (cfg.aq_mode) {
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VP9_COMP *const cpi = rc_api->cpi_;
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cpi->segmentation_map = static_cast<uint8_t *>(
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vpx_calloc(cpi->common.mi_rows * cpi->common.mi_cols,
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sizeof(*cpi->segmentation_map)));
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if (!cpi->segmentation_map) {
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rc_api.reset();
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return nullptr;
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}
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cpi->cyclic_refresh =
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vp9_cyclic_refresh_alloc(cpi->common.mi_rows, cpi->common.mi_cols);
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cpi->cyclic_refresh->content_mode = 0;
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}
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return rc_api;
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}
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void VP9RateControlRTC::InitRateControl(const VP9RateControlRtcConfig &rc_cfg) {
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VP9_COMMON *cm = &cpi_->common;
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VP9EncoderConfig *oxcf = &cpi_->oxcf;
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RATE_CONTROL *const rc = &cpi_->rc;
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cm->profile = PROFILE_0;
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cm->bit_depth = VPX_BITS_8;
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cm->show_frame = 1;
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oxcf->profile = cm->profile;
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oxcf->bit_depth = cm->bit_depth;
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oxcf->rc_mode = rc_cfg.rc_mode;
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oxcf->pass = 0;
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oxcf->aq_mode = rc_cfg.aq_mode ? CYCLIC_REFRESH_AQ : NO_AQ;
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oxcf->content = VP9E_CONTENT_DEFAULT;
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oxcf->drop_frames_water_mark = 0;
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cm->current_video_frame = 0;
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rc->kf_boost = DEFAULT_KF_BOOST;
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UpdateRateControl(rc_cfg);
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vp9_set_mb_mi(cm, cm->width, cm->height);
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cpi_->use_svc = (cpi_->svc.number_spatial_layers > 1 ||
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cpi_->svc.number_temporal_layers > 1)
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? 1
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: 0;
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rc->rc_1_frame = 0;
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rc->rc_2_frame = 0;
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vp9_rc_init_minq_luts();
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vp9_rc_init(oxcf, 0, rc);
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rc->constrain_gf_key_freq_onepass_vbr = 0;
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cpi_->sf.use_nonrd_pick_mode = 1;
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}
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void VP9RateControlRTC::UpdateRateControl(
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const VP9RateControlRtcConfig &rc_cfg) {
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VP9_COMMON *cm = &cpi_->common;
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VP9EncoderConfig *oxcf = &cpi_->oxcf;
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RATE_CONTROL *const rc = &cpi_->rc;
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cm->width = rc_cfg.width;
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cm->height = rc_cfg.height;
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oxcf->width = rc_cfg.width;
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oxcf->height = rc_cfg.height;
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oxcf->worst_allowed_q = vp9_quantizer_to_qindex(rc_cfg.max_quantizer);
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oxcf->best_allowed_q = vp9_quantizer_to_qindex(rc_cfg.min_quantizer);
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rc->worst_quality = oxcf->worst_allowed_q;
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rc->best_quality = oxcf->best_allowed_q;
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oxcf->init_framerate = rc_cfg.framerate;
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oxcf->target_bandwidth = 1000 * rc_cfg.target_bandwidth;
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oxcf->starting_buffer_level_ms = rc_cfg.buf_initial_sz;
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oxcf->optimal_buffer_level_ms = rc_cfg.buf_optimal_sz;
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oxcf->maximum_buffer_size_ms = rc_cfg.buf_sz;
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oxcf->under_shoot_pct = rc_cfg.undershoot_pct;
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oxcf->over_shoot_pct = rc_cfg.overshoot_pct;
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oxcf->ss_number_layers = rc_cfg.ss_number_layers;
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oxcf->ts_number_layers = rc_cfg.ts_number_layers;
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oxcf->temporal_layering_mode = (VP9E_TEMPORAL_LAYERING_MODE)(
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(rc_cfg.ts_number_layers > 1) ? rc_cfg.ts_number_layers : 0);
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cpi_->oxcf.rc_max_intra_bitrate_pct = rc_cfg.max_intra_bitrate_pct;
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cpi_->oxcf.rc_max_inter_bitrate_pct = rc_cfg.max_inter_bitrate_pct;
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cpi_->framerate = rc_cfg.framerate;
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cpi_->svc.number_spatial_layers = rc_cfg.ss_number_layers;
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cpi_->svc.number_temporal_layers = rc_cfg.ts_number_layers;
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vp9_set_mb_mi(cm, cm->width, cm->height);
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for (int sl = 0; sl < cpi_->svc.number_spatial_layers; ++sl) {
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for (int tl = 0; tl < cpi_->svc.number_temporal_layers; ++tl) {
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const int layer =
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LAYER_IDS_TO_IDX(sl, tl, cpi_->svc.number_temporal_layers);
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LAYER_CONTEXT *lc = &cpi_->svc.layer_context[layer];
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RATE_CONTROL *const lrc = &lc->rc;
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oxcf->layer_target_bitrate[layer] =
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1000 * rc_cfg.layer_target_bitrate[layer];
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lrc->worst_quality =
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vp9_quantizer_to_qindex(rc_cfg.max_quantizers[layer]);
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lrc->best_quality = vp9_quantizer_to_qindex(rc_cfg.min_quantizers[layer]);
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lc->scaling_factor_num = rc_cfg.scaling_factor_num[sl];
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lc->scaling_factor_den = rc_cfg.scaling_factor_den[sl];
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oxcf->ts_rate_decimator[tl] = rc_cfg.ts_rate_decimator[tl];
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}
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}
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vp9_set_rc_buffer_sizes(cpi_);
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vp9_new_framerate(cpi_, cpi_->framerate);
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if (cpi_->svc.number_temporal_layers > 1 ||
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cpi_->svc.number_spatial_layers > 1) {
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if (cm->current_video_frame == 0) vp9_init_layer_context(cpi_);
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vp9_update_layer_context_change_config(cpi_,
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(int)cpi_->oxcf.target_bandwidth);
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}
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vp9_check_reset_rc_flag(cpi_);
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}
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void VP9RateControlRTC::ComputeQP(const VP9FrameParamsQpRTC &frame_params) {
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VP9_COMMON *const cm = &cpi_->common;
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int width, height;
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cpi_->svc.spatial_layer_id = frame_params.spatial_layer_id;
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cpi_->svc.temporal_layer_id = frame_params.temporal_layer_id;
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if (cpi_->svc.number_spatial_layers > 1) {
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const int layer = LAYER_IDS_TO_IDX(cpi_->svc.spatial_layer_id,
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cpi_->svc.temporal_layer_id,
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cpi_->svc.number_temporal_layers);
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LAYER_CONTEXT *lc = &cpi_->svc.layer_context[layer];
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get_layer_resolution(cpi_->oxcf.width, cpi_->oxcf.height,
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lc->scaling_factor_num, lc->scaling_factor_den, &width,
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&height);
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cm->width = width;
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cm->height = height;
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}
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vp9_set_mb_mi(cm, cm->width, cm->height);
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cm->frame_type = frame_params.frame_type;
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// This is needed to ensure key frame does not get unset in rc_get_svc_params.
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cpi_->frame_flags = (cm->frame_type == KEY_FRAME) ? FRAMEFLAGS_KEY : 0;
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cpi_->refresh_golden_frame = (cm->frame_type == KEY_FRAME) ? 1 : 0;
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cpi_->sf.use_nonrd_pick_mode = 1;
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if (cpi_->svc.number_spatial_layers == 1 &&
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cpi_->svc.number_temporal_layers == 1) {
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int target = 0;
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if (cpi_->oxcf.rc_mode == VPX_CBR) {
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if (cpi_->oxcf.aq_mode == CYCLIC_REFRESH_AQ)
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vp9_cyclic_refresh_update_parameters(cpi_);
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if (frame_is_intra_only(cm))
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target = vp9_calc_iframe_target_size_one_pass_cbr(cpi_);
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else
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target = vp9_calc_pframe_target_size_one_pass_cbr(cpi_);
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} else if (cpi_->oxcf.rc_mode == VPX_VBR) {
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if (cm->frame_type == KEY_FRAME) {
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cpi_->rc.this_key_frame_forced = cm->current_video_frame != 0;
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cpi_->rc.frames_to_key = cpi_->oxcf.key_freq;
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}
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vp9_set_gf_update_one_pass_vbr(cpi_);
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if (cpi_->oxcf.aq_mode == CYCLIC_REFRESH_AQ)
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vp9_cyclic_refresh_update_parameters(cpi_);
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if (frame_is_intra_only(cm))
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target = vp9_calc_iframe_target_size_one_pass_vbr(cpi_);
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else
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target = vp9_calc_pframe_target_size_one_pass_vbr(cpi_);
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}
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vp9_rc_set_frame_target(cpi_, target);
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vp9_update_buffer_level_preencode(cpi_);
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} else {
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vp9_update_temporal_layer_framerate(cpi_);
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vp9_restore_layer_context(cpi_);
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vp9_rc_get_svc_params(cpi_);
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}
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int bottom_index, top_index;
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cpi_->common.base_qindex =
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vp9_rc_pick_q_and_bounds(cpi_, &bottom_index, &top_index);
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if (cpi_->oxcf.aq_mode == CYCLIC_REFRESH_AQ) vp9_cyclic_refresh_setup(cpi_);
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}
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int VP9RateControlRTC::GetQP() const { return cpi_->common.base_qindex; }
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int VP9RateControlRTC::GetLoopfilterLevel() const {
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struct loopfilter *const lf = &cpi_->common.lf;
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vp9_pick_filter_level(nullptr, cpi_, LPF_PICK_FROM_Q);
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return lf->filter_level;
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}
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bool VP9RateControlRTC::GetSegmentationData(
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VP9SegmentationData *segmentation_data) const {
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if (!cpi_->cyclic_refresh->apply_cyclic_refresh) return false;
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segmentation_data->segmentation_map = cpi_->segmentation_map;
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segmentation_data->segmentation_map_size =
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cpi_->common.mi_cols * cpi_->common.mi_rows;
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segmentation_data->delta_q = cpi_->cyclic_refresh->qindex_delta;
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segmentation_data->delta_q_size = 3u;
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return true;
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}
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void VP9RateControlRTC::PostEncodeUpdate(uint64_t encoded_frame_size) {
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vp9_rc_postencode_update(cpi_, encoded_frame_size);
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if (cpi_->svc.number_spatial_layers > 1 ||
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cpi_->svc.number_temporal_layers > 1)
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vp9_save_layer_context(cpi_);
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cpi_->common.current_video_frame++;
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}
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} // namespace libvpx
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