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/*
* Copyright (c) 2016, 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/common/timing.h"
/* Tables for AV1 max bitrates for different levels of main and high tier.
* The tables are in Kbps instead of Mbps in the specification.
* Note that depending on the profile, a multiplier is needed.
*/
#define UNDEFINED_RATE \
(1 << 21) // Placeholder rate for levels with undefined rate
#define INVALID_RATE \
(0) // For invalid profile-level configuration, set rate to 0
/* Max Bitrates for levels of Main Tier in kbps. Bitrate in main_kbps [31] */
/* is a dummy value. The decoder model is not applicable for level 31. */
static int32_t main_kbps[1 << LEVEL_BITS] = {
1500, 3000, UNDEFINED_RATE, UNDEFINED_RATE,
6000, 10000, UNDEFINED_RATE, UNDEFINED_RATE,
12000, 20000, UNDEFINED_RATE, UNDEFINED_RATE,
30000, 40000, 60000, 60000,
60000, 100000, 160000, 160000,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE
};
/* Max Bitrates for levels of High Tier in kbps. Bitrate in high_kbps [31] */
/* is a dummy value. The decoder model is not applicable for level 31. */
static int32_t high_kbps[1 << LEVEL_BITS] = {
INVALID_RATE, INVALID_RATE, INVALID_RATE, INVALID_RATE,
INVALID_RATE, INVALID_RATE, INVALID_RATE, INVALID_RATE,
30000, 50000, UNDEFINED_RATE, UNDEFINED_RATE,
100000, 160000, 240000, 240000,
240000, 480000, 800000, 800000,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE,
UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE, UNDEFINED_RATE
};
/* BitrateProfileFactor */
static int bitrate_profile_factor[1 << PROFILE_BITS] = {
1, 2, 3, 0, 0, 0, 0, 0
};
int64_t av1_max_level_bitrate(BITSTREAM_PROFILE seq_profile, int seq_level_idx,
int seq_tier) {
int64_t bitrate;
if (seq_tier) {
bitrate = high_kbps[seq_level_idx] * bitrate_profile_factor[seq_profile];
} else {
bitrate = main_kbps[seq_level_idx] * bitrate_profile_factor[seq_profile];
}
return bitrate * 1000;
}
void av1_set_aom_dec_model_info(aom_dec_model_info_t *decoder_model) {
decoder_model->encoder_decoder_buffer_delay_length = 16;
decoder_model->buffer_removal_time_length = 10;
decoder_model->frame_presentation_time_length = 10;
}
void av1_set_dec_model_op_parameters(aom_dec_model_op_parameters_t *op_params) {
op_params->decoder_model_param_present_flag = 1;
op_params->decoder_buffer_delay = 90000 >> 1; // 0.5 s
op_params->encoder_buffer_delay = 90000 >> 1; // 0.5 s
op_params->low_delay_mode_flag = 0;
op_params->display_model_param_present_flag = 1;
op_params->initial_display_delay = 8; // 8 frames delay
}
void av1_set_resource_availability_parameters(
aom_dec_model_op_parameters_t *op_params) {
op_params->decoder_model_param_present_flag = 0;
op_params->decoder_buffer_delay =
70000; // Resource availability mode default
op_params->encoder_buffer_delay =
20000; // Resource availability mode default
op_params->low_delay_mode_flag = 0; // Resource availability mode default
op_params->display_model_param_present_flag = 1;
op_params->initial_display_delay = 8; // 8 frames delay
}
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