Coverage Report

Created: 2025-06-22 08:04

/src/aom/av1/common/timing.c
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/*
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 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
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 *
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 * This source code is subject to the terms of the BSD 2 Clause License and
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 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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 * was not distributed with this source code in the LICENSE file, you can
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 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
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 * Media Patent License 1.0 was not distributed with this source code in the
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 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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 */
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#include "av1/common/timing.h"
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/* Tables for AV1 max bitrates for different levels of main and high tier.
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 * The tables are in Kbps instead of Mbps in the specification.
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 * Note that depending on the profile, a multiplier is needed.
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 */
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#define UNDEFINED_RATE \
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  (1 << 21)  // Placeholder rate for levels with undefined rate
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#define INVALID_RATE \
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  (0)  // For invalid profile-level configuration, set rate to 0
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/* Max Bitrates for levels of Main Tier in kbps. Bitrate in main_kbps [31] */
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/* is a dummy value. The decoder model is not applicable for level 31. */
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static const int32_t main_kbps[1 << LEVEL_BITS] = {
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  1500,           3000,           UNDEFINED_RATE, UNDEFINED_RATE,
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  6000,           10000,          UNDEFINED_RATE, UNDEFINED_RATE,
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  12000,          20000,          UNDEFINED_RATE, UNDEFINED_RATE,
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  30000,          40000,          60000,          60000,
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  60000,          100000,         160000,         160000,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE
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};
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/* Max Bitrates for levels of High Tier in kbps. Bitrate in high_kbps [31] */
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/* is a dummy value. The decoder model is not applicable for level 31. */
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static const int32_t high_kbps[1 << LEVEL_BITS] = {
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  INVALID_RATE,   INVALID_RATE,   INVALID_RATE,   INVALID_RATE,
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  INVALID_RATE,   INVALID_RATE,   INVALID_RATE,   INVALID_RATE,
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  30000,          50000,          UNDEFINED_RATE, UNDEFINED_RATE,
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  100000,         160000,         240000,         240000,
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  240000,         480000,         800000,         800000,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
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  UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE
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};
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/* BitrateProfileFactor */
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static const int bitrate_profile_factor[1 << PROFILE_BITS] = { 1, 2, 3, 0,
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                                                               0, 0, 0, 0 };
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int64_t av1_max_level_bitrate(BITSTREAM_PROFILE seq_profile, int seq_level_idx,
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1.08k
                              int seq_tier) {
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1.08k
  int64_t bitrate;
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1.08k
  if (seq_tier) {
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651
    bitrate = high_kbps[seq_level_idx] * bitrate_profile_factor[seq_profile];
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  } else {
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431
    bitrate = main_kbps[seq_level_idx] * bitrate_profile_factor[seq_profile];
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  }
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1.08k
  return bitrate * 1000;
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1.08k
}
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void av1_set_aom_dec_model_info(aom_dec_model_info_t *decoder_model) {
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  decoder_model->encoder_decoder_buffer_delay_length = 16;
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  decoder_model->buffer_removal_time_length = 10;
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  decoder_model->frame_presentation_time_length = 10;
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}
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void av1_set_dec_model_op_parameters(aom_dec_model_op_parameters_t *op_params) {
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  op_params->decoder_model_param_present_flag = 1;
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  op_params->decoder_buffer_delay = 90000 >> 1;  //  0.5 s
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  op_params->encoder_buffer_delay = 90000 >> 1;  //  0.5 s
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  op_params->low_delay_mode_flag = 0;
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  op_params->display_model_param_present_flag = 1;
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  op_params->initial_display_delay = 8;  // 8 frames delay
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}
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void av1_set_resource_availability_parameters(
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    aom_dec_model_op_parameters_t *op_params) {
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  op_params->decoder_model_param_present_flag = 0;
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  op_params->decoder_buffer_delay =
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      70000;  // Resource availability mode default
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  op_params->encoder_buffer_delay =
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      20000;                           // Resource availability mode default
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  op_params->low_delay_mode_flag = 0;  // Resource availability mode default
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  op_params->display_model_param_present_flag = 1;
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  op_params->initial_display_delay = 8;  // 8 frames delay
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}