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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include "av1/ratectrl_rtc.h"
#include <memory>
#include <new>
#include "aom/aomcx.h"
#include "aom/aom_encoder.h"
#include "aom_mem/aom_mem.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/encoder_utils.h"
#include "av1/encoder/ratectrl.h"
#include "av1/encoder/rc_utils.h"
#include "av1/encoder/svc_layercontext.h"
namespace aom {
AV1RateControlRtcConfig::AV1RateControlRtcConfig() {
width = 1280;
height = 720;
max_quantizer = 63;
min_quantizer = 2;
target_bandwidth = 1000;
buf_initial_sz = 600;
buf_optimal_sz = 600;
buf_sz = 1000;
undershoot_pct = overshoot_pct = 50;
max_intra_bitrate_pct = 50;
max_inter_bitrate_pct = 0;
framerate = 30.0;
ts_number_layers = 1;
aq_mode = 0;
layer_target_bitrate[0] = static_cast<int>(target_bandwidth);
ts_rate_decimator[0] = 1;
av1_zero(max_quantizers);
av1_zero(min_quantizers);
av1_zero(scaling_factor_den);
av1_zero(scaling_factor_num);
av1_zero(layer_target_bitrate);
av1_zero(ts_rate_decimator);
scaling_factor_num[0] = 1;
scaling_factor_den[0] = 1;
max_quantizers[0] = max_quantizer;
min_quantizers[0] = min_quantizer;
}
std::unique_ptr<AV1RateControlRTC> AV1RateControlRTC::Create(
const AV1RateControlRtcConfig &cfg) {
std::unique_ptr<AV1RateControlRTC> rc_api(new (std::nothrow)
AV1RateControlRTC());
if (!rc_api) return nullptr;
rc_api->cpi_ = static_cast<AV1_COMP *>(aom_memalign(32, sizeof(*cpi_)));
if (!rc_api->cpi_) return nullptr;
av1_zero(*rc_api->cpi_);
rc_api->cpi_->ppi =
static_cast<AV1_PRIMARY *>(aom_memalign(32, sizeof(AV1_PRIMARY)));
if (!rc_api->cpi_->ppi) return nullptr;
rc_api->cpi_->common.seq_params = &rc_api->cpi_->ppi->seq_params;
av1_zero(*rc_api->cpi_->common.seq_params);
rc_api->InitRateControl(cfg);
if (cfg.aq_mode) {
AV1_COMP *const cpi = rc_api->cpi_;
cpi->enc_seg.map = static_cast<uint8_t *>(aom_calloc(
cpi->common.mi_params.mi_rows * cpi->common.mi_params.mi_cols,
sizeof(*cpi->enc_seg.map)));
if (!cpi->enc_seg.map) return nullptr;
cpi->cyclic_refresh = av1_cyclic_refresh_alloc(
cpi->common.mi_params.mi_rows, cpi->common.mi_params.mi_cols);
if (!cpi->cyclic_refresh) return nullptr;
}
return rc_api;
}
AV1RateControlRTC::~AV1RateControlRTC() {
if (cpi_) {
if (cpi_->svc.number_spatial_layers > 1 ||
cpi_->svc.number_temporal_layers > 1) {
for (int sl = 0; sl < cpi_->svc.number_spatial_layers; sl++) {
for (int tl = 0; tl < cpi_->svc.number_temporal_layers; tl++) {
int layer =
LAYER_IDS_TO_IDX(sl, tl, cpi_->svc.number_temporal_layers);
LAYER_CONTEXT *const lc = &cpi_->svc.layer_context[layer];
aom_free(lc->map);
}
}
}
if (cpi_->oxcf.q_cfg.aq_mode == CYCLIC_REFRESH_AQ) {
aom_free(cpi_->enc_seg.map);
cpi_->enc_seg.map = nullptr;
av1_cyclic_refresh_free(cpi_->cyclic_refresh);
}
aom_free(cpi_->ppi);
aom_free(cpi_);
}
}
void AV1RateControlRTC::InitRateControl(const AV1RateControlRtcConfig &rc_cfg) {
AV1_COMMON *cm = &cpi_->common;
AV1EncoderConfig *oxcf = &cpi_->oxcf;
RATE_CONTROL *const rc = &cpi_->rc;
cm->seq_params->profile = PROFILE_0;
cm->seq_params->bit_depth = AOM_BITS_8;
cm->show_frame = 1;
oxcf->profile = cm->seq_params->profile;
oxcf->mode = REALTIME;
oxcf->rc_cfg.mode = AOM_CBR;
oxcf->pass = AOM_RC_ONE_PASS;
oxcf->q_cfg.aq_mode = rc_cfg.aq_mode ? CYCLIC_REFRESH_AQ : NO_AQ;
oxcf->tune_cfg.content = AOM_CONTENT_DEFAULT;
oxcf->rc_cfg.drop_frames_water_mark = 0;
oxcf->tool_cfg.bit_depth = AOM_BITS_8;
oxcf->tool_cfg.superblock_size = AOM_SUPERBLOCK_SIZE_DYNAMIC;
cm->current_frame.frame_number = 0;
cpi_->ppi->p_rc.kf_boost = DEFAULT_KF_BOOST_RT;
for (auto &lvl_idx : oxcf->target_seq_level_idx) lvl_idx = SEQ_LEVEL_MAX;
memcpy(cpi_->ppi->level_params.target_seq_level_idx,
oxcf->target_seq_level_idx, sizeof(oxcf->target_seq_level_idx));
UpdateRateControl(rc_cfg);
set_sb_size(cm->seq_params,
av1_select_sb_size(oxcf, cm->width, cm->height,
cpi_->svc.number_spatial_layers));
cpi_->ppi->use_svc = cpi_->svc.number_spatial_layers > 1 ||
cpi_->svc.number_temporal_layers > 1;
av1_primary_rc_init(oxcf, &cpi_->ppi->p_rc);
rc->rc_1_frame = 0;
rc->rc_2_frame = 0;
av1_rc_init_minq_luts();
av1_rc_init(oxcf, rc);
// Enable external rate control.
cpi_->rc.rtc_external_ratectrl = 1;
cpi_->sf.rt_sf.use_nonrd_pick_mode = 1;
}
void AV1RateControlRTC::UpdateRateControl(
const AV1RateControlRtcConfig &rc_cfg) {
AV1_COMMON *cm = &cpi_->common;
AV1EncoderConfig *oxcf = &cpi_->oxcf;
RATE_CONTROL *const rc = &cpi_->rc;
initial_width_ = rc_cfg.width;
initial_height_ = rc_cfg.height;
cm->width = rc_cfg.width;
cm->height = rc_cfg.height;
oxcf->frm_dim_cfg.width = rc_cfg.width;
oxcf->frm_dim_cfg.height = rc_cfg.height;
oxcf->rc_cfg.worst_allowed_q = av1_quantizer_to_qindex(rc_cfg.max_quantizer);
oxcf->rc_cfg.best_allowed_q = av1_quantizer_to_qindex(rc_cfg.min_quantizer);
rc->worst_quality = oxcf->rc_cfg.worst_allowed_q;
rc->best_quality = oxcf->rc_cfg.best_allowed_q;
oxcf->input_cfg.init_framerate = rc_cfg.framerate;
oxcf->rc_cfg.target_bandwidth = rc_cfg.target_bandwidth > INT64_MAX / 1000
? INT64_MAX
: 1000 * rc_cfg.target_bandwidth;
oxcf->rc_cfg.starting_buffer_level_ms = rc_cfg.buf_initial_sz;
oxcf->rc_cfg.optimal_buffer_level_ms = rc_cfg.buf_optimal_sz;
oxcf->rc_cfg.maximum_buffer_size_ms = rc_cfg.buf_sz;
oxcf->rc_cfg.under_shoot_pct = rc_cfg.undershoot_pct;
oxcf->rc_cfg.over_shoot_pct = rc_cfg.overshoot_pct;
oxcf->rc_cfg.max_intra_bitrate_pct = rc_cfg.max_intra_bitrate_pct;
oxcf->rc_cfg.max_inter_bitrate_pct = rc_cfg.max_inter_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;
set_primary_rc_buffer_sizes(oxcf, cpi_->ppi);
enc_set_mb_mi(&cm->mi_params, cm->width, cm->height, BLOCK_8X8);
int64_t target_bandwidth_svc = 0;
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;
lc->layer_target_bitrate = 1000 * rc_cfg.layer_target_bitrate[layer];
lc->max_q = rc_cfg.max_quantizers[layer];
lc->min_q = rc_cfg.min_quantizers[layer];
lrc->worst_quality =
av1_quantizer_to_qindex(rc_cfg.max_quantizers[layer]);
lrc->best_quality = av1_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];
lc->framerate_factor = rc_cfg.ts_rate_decimator[tl];
if (tl == cpi_->svc.number_temporal_layers - 1)
target_bandwidth_svc += lc->layer_target_bitrate;
}
}
av1_new_framerate(cpi_, cpi_->framerate);
if (cpi_->svc.number_temporal_layers > 1 ||
cpi_->svc.number_spatial_layers > 1) {
if (cm->current_frame.frame_number == 0) av1_init_layer_context(cpi_);
// This is needed to initialize external RC flag in layer context structure.
cpi_->rc.rtc_external_ratectrl = 1;
av1_update_layer_context_change_config(cpi_, target_bandwidth_svc);
}
check_reset_rc_flag(cpi_);
}
void AV1RateControlRTC::ComputeQP(const AV1FrameParamsRTC &frame_params) {
AV1_COMMON *const cm = &cpi_->common;
int width, height;
GF_GROUP *const gf_group = &cpi_->ppi->gf_group;
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];
av1_get_layer_resolution(initial_width_, initial_height_,
lc->scaling_factor_num, lc->scaling_factor_den,
&width, &height);
cm->width = width;
cm->height = height;
}
enc_set_mb_mi(&cm->mi_params, cm->width, cm->height, BLOCK_8X8);
cm->current_frame.frame_type = frame_params.frame_type;
cpi_->refresh_frame.golden_frame =
(cm->current_frame.frame_type == KEY_FRAME) ? 1 : 0;
cpi_->sf.rt_sf.use_nonrd_pick_mode = 1;
if (frame_params.frame_type == kKeyFrame) {
gf_group->update_type[cpi_->gf_frame_index] = KF_UPDATE;
gf_group->frame_type[cpi_->gf_frame_index] = KEY_FRAME;
gf_group->refbuf_state[cpi_->gf_frame_index] = REFBUF_RESET;
cpi_->rc.frames_since_key = 0;
if (cpi_->ppi->use_svc) {
const int layer = LAYER_IDS_TO_IDX(cpi_->svc.spatial_layer_id,
cpi_->svc.temporal_layer_id,
cpi_->svc.number_temporal_layers);
if (cm->current_frame.frame_number > 0)
av1_svc_reset_temporal_layers(cpi_, 1);
cpi_->svc.layer_context[layer].is_key_frame = 1;
}
} else {
gf_group->update_type[cpi_->gf_frame_index] = LF_UPDATE;
gf_group->frame_type[cpi_->gf_frame_index] = INTER_FRAME;
gf_group->refbuf_state[cpi_->gf_frame_index] = REFBUF_UPDATE;
if (cpi_->ppi->use_svc) {
const int layer = LAYER_IDS_TO_IDX(cpi_->svc.spatial_layer_id,
cpi_->svc.temporal_layer_id,
cpi_->svc.number_temporal_layers);
cpi_->svc.layer_context[layer].is_key_frame = 0;
}
cpi_->rc.frames_since_key++;
}
if (cpi_->svc.number_spatial_layers > 1 ||
cpi_->svc.number_temporal_layers > 1) {
av1_update_temporal_layer_framerate(cpi_);
av1_restore_layer_context(cpi_);
}
int target = 0;
if (cpi_->oxcf.rc_cfg.mode == AOM_CBR) {
if (cpi_->oxcf.q_cfg.aq_mode == CYCLIC_REFRESH_AQ)
av1_cyclic_refresh_update_parameters(cpi_);
if (frame_is_intra_only(cm))
target = av1_calc_iframe_target_size_one_pass_cbr(cpi_);
else
target = av1_calc_pframe_target_size_one_pass_cbr(
cpi_, gf_group->update_type[cpi_->gf_frame_index]);
}
av1_rc_set_frame_target(cpi_, target, cm->width, cm->height);
int bottom_index, top_index;
cpi_->common.quant_params.base_qindex =
av1_rc_pick_q_and_bounds(cpi_, cm->width, cm->height,
cpi_->gf_frame_index, &bottom_index, &top_index);
if (cpi_->oxcf.q_cfg.aq_mode == CYCLIC_REFRESH_AQ)
av1_cyclic_refresh_setup(cpi_);
}
int AV1RateControlRTC::GetQP() const {
return cpi_->common.quant_params.base_qindex;
}
signed char *AV1RateControlRTC::GetCyclicRefreshMap() const {
return cpi_->cyclic_refresh->map;
}
int *AV1RateControlRTC::GetDeltaQ() const {
return cpi_->cyclic_refresh->qindex_delta;
}
void AV1RateControlRTC::PostEncodeUpdate(uint64_t encoded_frame_size) {
av1_rc_postencode_update(cpi_, encoded_frame_size);
if (cpi_->svc.number_spatial_layers > 1 ||
cpi_->svc.number_temporal_layers > 1)
av1_save_layer_context(cpi_);
cpi_->common.current_frame.frame_number++;
}
} // namespace aom