mirror of https://git.ffmpeg.org/ffmpeg.git
126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/*
|
|
* Immersive Audio Model and Formats common helpers and structs
|
|
* Copyright (c) 2023 James Almer <jamrial@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/iamf.h"
|
|
#include "libavutil/mem.h"
|
|
#include "iamf.h"
|
|
|
|
const AVChannelLayout ff_iamf_scalable_ch_layouts[10] = {
|
|
AV_CHANNEL_LAYOUT_MONO,
|
|
AV_CHANNEL_LAYOUT_STEREO,
|
|
// "Loudspeaker configuration for Sound System B"
|
|
AV_CHANNEL_LAYOUT_5POINT1_BACK,
|
|
// "Loudspeaker configuration for Sound System C"
|
|
AV_CHANNEL_LAYOUT_5POINT1POINT2_BACK,
|
|
// "Loudspeaker configuration for Sound System D"
|
|
AV_CHANNEL_LAYOUT_5POINT1POINT4_BACK,
|
|
// "Loudspeaker configuration for Sound System I"
|
|
AV_CHANNEL_LAYOUT_7POINT1,
|
|
// "Loudspeaker configuration for Sound System I" + Ltf + Rtf
|
|
AV_CHANNEL_LAYOUT_7POINT1POINT2,
|
|
// "Loudspeaker configuration for Sound System J"
|
|
AV_CHANNEL_LAYOUT_7POINT1POINT4_BACK,
|
|
// Front subset of "Loudspeaker configuration for Sound System J"
|
|
AV_CHANNEL_LAYOUT_3POINT1POINT2,
|
|
// Binaural
|
|
AV_CHANNEL_LAYOUT_BINAURAL,
|
|
};
|
|
|
|
const struct IAMFSoundSystemMap ff_iamf_sound_system_map[13] = {
|
|
{ SOUND_SYSTEM_A_0_2_0, AV_CHANNEL_LAYOUT_STEREO },
|
|
{ SOUND_SYSTEM_B_0_5_0, AV_CHANNEL_LAYOUT_5POINT1_BACK },
|
|
{ SOUND_SYSTEM_C_2_5_0, AV_CHANNEL_LAYOUT_5POINT1POINT2_BACK },
|
|
{ SOUND_SYSTEM_D_4_5_0, AV_CHANNEL_LAYOUT_5POINT1POINT4_BACK },
|
|
{ SOUND_SYSTEM_E_4_5_1,
|
|
{
|
|
.nb_channels = 11,
|
|
.order = AV_CHANNEL_ORDER_NATIVE,
|
|
.u.mask = AV_CH_LAYOUT_5POINT1POINT4_BACK | AV_CH_BOTTOM_FRONT_CENTER,
|
|
},
|
|
},
|
|
{ SOUND_SYSTEM_F_3_7_0, AV_CHANNEL_LAYOUT_7POINT2POINT3 },
|
|
{ SOUND_SYSTEM_G_4_9_0, AV_CHANNEL_LAYOUT_9POINT1POINT4_BACK },
|
|
{ SOUND_SYSTEM_H_9_10_3, AV_CHANNEL_LAYOUT_22POINT2 },
|
|
{ SOUND_SYSTEM_I_0_7_0, AV_CHANNEL_LAYOUT_7POINT1 },
|
|
{ SOUND_SYSTEM_J_4_7_0, AV_CHANNEL_LAYOUT_7POINT1POINT4_BACK },
|
|
{ SOUND_SYSTEM_10_2_7_0, AV_CHANNEL_LAYOUT_7POINT1POINT2 },
|
|
{ SOUND_SYSTEM_11_2_3_0, AV_CHANNEL_LAYOUT_3POINT1POINT2 },
|
|
{ SOUND_SYSTEM_12_0_1_0, AV_CHANNEL_LAYOUT_MONO },
|
|
};
|
|
|
|
void ff_iamf_free_audio_element(IAMFAudioElement **paudio_element)
|
|
{
|
|
IAMFAudioElement *audio_element = *paudio_element;
|
|
|
|
if (!audio_element)
|
|
return;
|
|
|
|
for (int i = 0; i < audio_element->nb_substreams; i++)
|
|
avcodec_parameters_free(&audio_element->substreams[i].codecpar);
|
|
av_free(audio_element->substreams);
|
|
av_free(audio_element->layers);
|
|
av_iamf_audio_element_free(&audio_element->element);
|
|
av_freep(paudio_element);
|
|
}
|
|
|
|
void ff_iamf_free_mix_presentation(IAMFMixPresentation **pmix_presentation)
|
|
{
|
|
IAMFMixPresentation *mix_presentation = *pmix_presentation;
|
|
|
|
if (!mix_presentation)
|
|
return;
|
|
|
|
for (int i = 0; i < mix_presentation->count_label; i++)
|
|
av_free(mix_presentation->language_label[i]);
|
|
av_free(mix_presentation->language_label);
|
|
av_iamf_mix_presentation_free(&mix_presentation->mix);
|
|
av_freep(pmix_presentation);
|
|
}
|
|
|
|
void ff_iamf_uninit_context(IAMFContext *c)
|
|
{
|
|
if (!c)
|
|
return;
|
|
|
|
for (int i = 0; i < c->nb_codec_configs; i++) {
|
|
av_free(c->codec_configs[i]->extradata);
|
|
av_free(c->codec_configs[i]);
|
|
}
|
|
av_freep(&c->codec_configs);
|
|
c->nb_codec_configs = 0;
|
|
|
|
for (int i = 0; i < c->nb_audio_elements; i++)
|
|
ff_iamf_free_audio_element(&c->audio_elements[i]);
|
|
av_freep(&c->audio_elements);
|
|
c->nb_audio_elements = 0;
|
|
|
|
for (int i = 0; i < c->nb_mix_presentations; i++)
|
|
ff_iamf_free_mix_presentation(&c->mix_presentations[i]);
|
|
av_freep(&c->mix_presentations);
|
|
c->nb_mix_presentations = 0;
|
|
|
|
for (int i = 0; i < c->nb_param_definitions; i++)
|
|
av_free(c->param_definitions[i]);
|
|
av_freep(&c->param_definitions);
|
|
c->nb_param_definitions = 0;
|
|
}
|