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FFmpeg/libavutil/iamf.c

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/*
* Immersive Audio Model and Formats helper functions and defines
*
* 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 <limits.h>
#include <stddef.h>
#include <stdint.h>
#include "avassert.h"
#include "error.h"
#include "iamf.h"
#include "log.h"
#include "mem.h"
#include "opt.h"
#define IAMF_ADD_FUNC_TEMPLATE(parent_type, parent_name, child_type, child_name, suffix) \
child_type *av_iamf_ ## parent_name ## _add_ ## child_name(parent_type *parent_name) \
{ \
child_type **child_name ## suffix, *child_name; \
\
if (parent_name->nb_## child_name ## suffix == UINT_MAX) \
return NULL; \
\
child_name ## suffix = av_realloc_array(parent_name->child_name ## suffix, \
parent_name->nb_## child_name ## suffix + 1, \
sizeof(*parent_name->child_name ## suffix)); \
if (!child_name ## suffix) \
return NULL; \
\
parent_name->child_name ## suffix = child_name ## suffix; \
\
child_name = parent_name->child_name ## suffix[parent_name->nb_## child_name ## suffix] \
= av_mallocz(sizeof(*child_name)); \
if (!child_name) \
return NULL; \
\
child_name->av_class = &child_name ## _class; \
av_opt_set_defaults(child_name); \
parent_name->nb_## child_name ## suffix++; \
\
return child_name; \
}
#define FLAGS AV_OPT_FLAG_ENCODING_PARAM
//
// Param Definition
//
#define OFFSET(x) offsetof(AVIAMFMixGain, x)
static const AVOption mix_gain_options[] = {
{ "subblock_duration", "set subblock_duration", OFFSET(subblock_duration), AV_OPT_TYPE_INT64, {.i64 = 1 }, 1, UINT_MAX, FLAGS },
{ "animation_type", "set animation_type", OFFSET(animation_type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FLAGS },
{ "start_point_value", "set start_point_value", OFFSET(animation_type), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, -128.0, 128.0, FLAGS },
{ "end_point_value", "set end_point_value", OFFSET(animation_type), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, -128.0, 128.0, FLAGS },
{ "control_point_value", "set control_point_value", OFFSET(animation_type), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, -128.0, 128.0, FLAGS },
{ "control_point_relative_time", "set control_point_relative_time", OFFSET(animation_type), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0.0, 1.0, FLAGS },
{ NULL },
};
static const AVClass mix_gain_class = {
.class_name = "AVIAMFSubmixElement",
.version = LIBAVUTIL_VERSION_INT,
.option = mix_gain_options,
};
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFDemixingInfo, x)
static const AVOption demixing_info_options[] = {
{ "subblock_duration", "set subblock_duration", OFFSET(subblock_duration), AV_OPT_TYPE_INT64, {.i64 = 1 }, 1, UINT_MAX, FLAGS },
{ "dmixp_mode", "set dmixp_mode", OFFSET(dmixp_mode), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 6, FLAGS },
{ NULL },
};
static const AVClass demixing_info_class = {
.class_name = "AVIAMFDemixingInfo",
.version = LIBAVUTIL_VERSION_INT,
.option = demixing_info_options,
};
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFReconGain, x)
static const AVOption recon_gain_options[] = {
{ "subblock_duration", "set subblock_duration", OFFSET(subblock_duration), AV_OPT_TYPE_INT64, {.i64 = 1 }, 1, UINT_MAX, FLAGS },
{ NULL },
};
static const AVClass recon_gain_class = {
.class_name = "AVIAMFReconGain",
.version = LIBAVUTIL_VERSION_INT,
.option = recon_gain_options,
};
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFParamDefinition, x)
static const AVOption param_definition_options[] = {
{ "parameter_id", "set parameter_id", OFFSET(parameter_id), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, UINT_MAX, FLAGS },
{ "parameter_rate", "set parameter_rate", OFFSET(parameter_rate), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, UINT_MAX, FLAGS },
{ "duration", "set duration", OFFSET(duration), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, UINT_MAX, FLAGS },
{ "constant_subblock_duration", "set constant_subblock_duration", OFFSET(constant_subblock_duration), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, UINT_MAX, FLAGS },
{ NULL },
};
static const AVClass *param_definition_child_iterate(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVClass *ret = NULL;
switch(i) {
case AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN:
ret = &mix_gain_class;
break;
case AV_IAMF_PARAMETER_DEFINITION_DEMIXING:
ret = &demixing_info_class;
break;
case AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN:
ret = &recon_gain_class;
break;
default:
break;
}
if (ret)
*opaque = (void*)(i + 1);
return ret;
}
static const AVClass param_definition_class = {
.class_name = "AVIAMFParamDefinition",
.version = LIBAVUTIL_VERSION_INT,
.option = param_definition_options,
.child_class_iterate = param_definition_child_iterate,
};
const AVClass *av_iamf_param_definition_get_class(void)
{
return &param_definition_class;
}
AVIAMFParamDefinition *av_iamf_param_definition_alloc(enum AVIAMFParamDefinitionType type,
unsigned int nb_subblocks, size_t *out_size)
{
struct MixGainStruct {
AVIAMFParamDefinition p;
AVIAMFMixGain m;
};
struct DemixStruct {
AVIAMFParamDefinition p;
AVIAMFDemixingInfo d;
};
struct ReconGainStruct {
AVIAMFParamDefinition p;
AVIAMFReconGain r;
};
size_t subblocks_offset, subblock_size;
size_t size;
AVIAMFParamDefinition *par;
switch (type) {
case AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN:
subblocks_offset = offsetof(struct MixGainStruct, m);
subblock_size = sizeof(AVIAMFMixGain);
break;
case AV_IAMF_PARAMETER_DEFINITION_DEMIXING:
subblocks_offset = offsetof(struct DemixStruct, d);
subblock_size = sizeof(AVIAMFDemixingInfo);
break;
case AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN:
subblocks_offset = offsetof(struct ReconGainStruct, r);
subblock_size = sizeof(AVIAMFReconGain);
break;
default:
return NULL;
}
size = subblocks_offset;
if (nb_subblocks > (SIZE_MAX - size) / subblock_size)
return NULL;
size += subblock_size * nb_subblocks;
par = av_mallocz(size);
if (!par)
return NULL;
par->av_class = &param_definition_class;
av_opt_set_defaults(par);
par->type = type;
par->nb_subblocks = nb_subblocks;
par->subblock_size = subblock_size;
par->subblocks_offset = subblocks_offset;
for (int i = 0; i < nb_subblocks; i++) {
void *subblock = av_iamf_param_definition_get_subblock(par, i);
switch (type) {
case AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN:
((AVIAMFMixGain *)subblock)->av_class = &mix_gain_class;
break;
case AV_IAMF_PARAMETER_DEFINITION_DEMIXING:
((AVIAMFDemixingInfo *)subblock)->av_class = &demixing_info_class;
break;
case AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN:
((AVIAMFReconGain *)subblock)->av_class = &recon_gain_class;
break;
default:
av_assert0(0);
}
av_opt_set_defaults(subblock);
}
if (out_size)
*out_size = size;
return par;
}
//
// Audio Element
//
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFLayer, x)
static const AVOption layer_options[] = {
{ "ch_layout", "set ch_layout", OFFSET(ch_layout), AV_OPT_TYPE_CHLAYOUT, {.str = NULL }, 0, 0, FLAGS },
{ "flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS,
{.i64 = 0 }, 0, AV_IAMF_LAYER_FLAG_RECON_GAIN, FLAGS, "flags" },
{"recon_gain", "Recon gain is present", 0, AV_OPT_TYPE_CONST,
{.i64 = AV_IAMF_LAYER_FLAG_RECON_GAIN }, INT_MIN, INT_MAX, FLAGS, "flags"},
{ "output_gain_flags", "set output_gain_flags", OFFSET(output_gain_flags), AV_OPT_TYPE_FLAGS,
{.i64 = 0 }, 0, (1 << 6) - 1, FLAGS, "output_gain_flags" },
{"FL", "Left channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 5 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{"FR", "Right channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 4 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{"BL", "Left surround channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 3 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{"BR", "Right surround channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 2 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{"TFL", "Left top front channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 1 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{"TFR", "Right top front channel", 0, AV_OPT_TYPE_CONST,
{.i64 = 1 << 0 }, INT_MIN, INT_MAX, FLAGS, "output_gain_flags"},
{ "output_gain", "set output_gain", OFFSET(output_gain), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "ambisonics_mode", "set ambisonics_mode", OFFSET(ambisonics_mode), AV_OPT_TYPE_INT,
{ .i64 = AV_IAMF_AMBISONICS_MODE_MONO },
AV_IAMF_AMBISONICS_MODE_MONO, AV_IAMF_AMBISONICS_MODE_PROJECTION, FLAGS, "ambisonics_mode" },
{ "mono", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_AMBISONICS_MODE_MONO }, .unit = "ambisonics_mode" },
{ "projection", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_AMBISONICS_MODE_PROJECTION }, .unit = "ambisonics_mode" },
{ NULL },
};
static const AVClass layer_class = {
.class_name = "AVIAMFLayer",
.version = LIBAVUTIL_VERSION_INT,
.option = layer_options,
};
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFAudioElement, x)
static const AVOption audio_element_options[] = {
{ "audio_element_type", "set audio_element_type", OFFSET(audio_element_type), AV_OPT_TYPE_INT,
{.i64 = AV_IAMF_AUDIO_ELEMENT_TYPE_CHANNEL },
AV_IAMF_AUDIO_ELEMENT_TYPE_CHANNEL, AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE, FLAGS, "audio_element_type" },
{ "channel", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_AUDIO_ELEMENT_TYPE_CHANNEL }, .unit = "audio_element_type" },
{ "scene", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE }, .unit = "audio_element_type" },
{ "default_w", "set default_w", OFFSET(default_w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 10, FLAGS },
{ NULL },
};
static const AVClass *audio_element_child_iterate(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVClass *ret = NULL;
if (i)
ret = &layer_class;
if (ret)
*opaque = (void*)(i + 1);
return ret;
}
static const AVClass audio_element_class = {
.class_name = "AVIAMFAudioElement",
.version = LIBAVUTIL_VERSION_INT,
.option = audio_element_options,
.child_class_iterate = audio_element_child_iterate,
};
const AVClass *av_iamf_audio_element_get_class(void)
{
return &audio_element_class;
}
AVIAMFAudioElement *av_iamf_audio_element_alloc(void)
{
AVIAMFAudioElement *audio_element = av_mallocz(sizeof(*audio_element));
if (audio_element) {
audio_element->av_class = &audio_element_class;
av_opt_set_defaults(audio_element);
}
return audio_element;
}
IAMF_ADD_FUNC_TEMPLATE(AVIAMFAudioElement, audio_element, AVIAMFLayer, layer, s)
void av_iamf_audio_element_free(AVIAMFAudioElement **paudio_element)
{
AVIAMFAudioElement *audio_element = *paudio_element;
if (!audio_element)
return;
for (int i = 0; i < audio_element->nb_layers; i++) {
AVIAMFLayer *layer = audio_element->layers[i];
av_opt_free(layer);
av_free(layer->demixing_matrix);
av_free(layer);
}
av_free(audio_element->layers);
av_free(audio_element->demixing_info);
av_free(audio_element->recon_gain_info);
av_freep(paudio_element);
}
//
// Mix Presentation
//
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFSubmixElement, x)
static const AVOption submix_element_options[] = {
{ "headphones_rendering_mode", "Headphones rendering mode", OFFSET(headphones_rendering_mode), AV_OPT_TYPE_INT,
{ .i64 = AV_IAMF_HEADPHONES_MODE_STEREO },
AV_IAMF_HEADPHONES_MODE_STEREO, AV_IAMF_HEADPHONES_MODE_BINAURAL, FLAGS, "headphones_rendering_mode" },
{ "stereo", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_HEADPHONES_MODE_STEREO }, .unit = "headphones_rendering_mode" },
{ "binaural", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_HEADPHONES_MODE_BINAURAL }, .unit = "headphones_rendering_mode" },
{ "default_mix_gain", "Default mix gain", OFFSET(default_mix_gain), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "annotations", "Annotations", OFFSET(annotations), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, FLAGS },
{ NULL },
};
static void *submix_element_child_next(void *obj, void *prev)
{
AVIAMFSubmixElement *submix_element = obj;
if (!prev)
return submix_element->element_mix_config;
return NULL;
}
static const AVClass *submix_element_child_iterate(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVClass *ret = NULL;
if (i)
ret = &param_definition_class;
if (ret)
*opaque = (void*)(i + 1);
return ret;
}
static const AVClass element_class = {
.class_name = "AVIAMFSubmixElement",
.version = LIBAVUTIL_VERSION_INT,
.option = submix_element_options,
.child_next = submix_element_child_next,
.child_class_iterate = submix_element_child_iterate,
};
IAMF_ADD_FUNC_TEMPLATE(AVIAMFSubmix, submix, AVIAMFSubmixElement, element, s)
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFSubmixLayout, x)
static const AVOption submix_layout_options[] = {
{ "layout_type", "Layout type", OFFSET(layout_type), AV_OPT_TYPE_INT,
{ .i64 = AV_IAMF_SUBMIX_LAYOUT_TYPE_LOUDSPEAKERS },
AV_IAMF_SUBMIX_LAYOUT_TYPE_LOUDSPEAKERS, AV_IAMF_SUBMIX_LAYOUT_TYPE_BINAURAL, FLAGS, "layout_type" },
{ "loudspeakers", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_SUBMIX_LAYOUT_TYPE_LOUDSPEAKERS }, .unit = "layout_type" },
{ "binaural", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_IAMF_SUBMIX_LAYOUT_TYPE_BINAURAL }, .unit = "layout_type" },
{ "sound_system", "Sound System", OFFSET(sound_system), AV_OPT_TYPE_CHLAYOUT, { .str = NULL }, 0, 0, FLAGS },
{ "integrated_loudness", "Integrated loudness", OFFSET(integrated_loudness), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "digital_peak", "Digital peak", OFFSET(digital_peak), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "true_peak", "True peak", OFFSET(true_peak), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "dialog_anchored_loudness", "Anchored loudness (Dialog)", OFFSET(dialogue_anchored_loudness), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ "album_anchored_loudness", "Anchored loudness (Album)", OFFSET(album_anchored_loudness), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ NULL },
};
static const AVClass layout_class = {
.class_name = "AVIAMFSubmixLayout",
.version = LIBAVUTIL_VERSION_INT,
.option = submix_layout_options,
};
IAMF_ADD_FUNC_TEMPLATE(AVIAMFSubmix, submix, AVIAMFSubmixLayout, layout, s)
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFSubmix, x)
static const AVOption submix_presentation_options[] = {
{ "default_mix_gain", "Default mix gain", OFFSET(default_mix_gain), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, -128.0, 128.0, FLAGS },
{ NULL },
};
static void *submix_presentation_child_next(void *obj, void *prev)
{
AVIAMFSubmix *sub_mix = obj;
if (!prev)
return sub_mix->output_mix_config;
return NULL;
}
static const AVClass *submix_presentation_child_iterate(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVClass *ret = NULL;
switch(i) {
case 0:
ret = &element_class;
break;
case 1:
ret = &layout_class;
break;
case 2:
ret = &param_definition_class;
break;
default:
break;
}
if (ret)
*opaque = (void*)(i + 1);
return ret;
}
static const AVClass submix_class = {
.class_name = "AVIAMFSubmix",
.version = LIBAVUTIL_VERSION_INT,
.option = submix_presentation_options,
.child_next = submix_presentation_child_next,
.child_class_iterate = submix_presentation_child_iterate,
};
#undef OFFSET
#define OFFSET(x) offsetof(AVIAMFMixPresentation, x)
static const AVOption mix_presentation_options[] = {
{ "annotations", "set annotations", OFFSET(annotations), AV_OPT_TYPE_DICT, {.str = NULL }, 0, 0, FLAGS },
{ NULL },
};
#undef OFFSET
#undef FLAGS
static const AVClass *mix_presentation_child_iterate(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVClass *ret = NULL;
if (i)
ret = &submix_class;
if (ret)
*opaque = (void*)(i + 1);
return ret;
}
static const AVClass mix_presentation_class = {
.class_name = "AVIAMFMixPresentation",
.version = LIBAVUTIL_VERSION_INT,
.option = mix_presentation_options,
.child_class_iterate = mix_presentation_child_iterate,
};
const AVClass *av_iamf_mix_presentation_get_class(void)
{
return &mix_presentation_class;
}
AVIAMFMixPresentation *av_iamf_mix_presentation_alloc(void)
{
AVIAMFMixPresentation *mix_presentation = av_mallocz(sizeof(*mix_presentation));
if (mix_presentation) {
mix_presentation->av_class = &mix_presentation_class;
av_opt_set_defaults(mix_presentation);
}
return mix_presentation;
}
IAMF_ADD_FUNC_TEMPLATE(AVIAMFMixPresentation, mix_presentation, AVIAMFSubmix, submix, es)
void av_iamf_mix_presentation_free(AVIAMFMixPresentation **pmix_presentation)
{
AVIAMFMixPresentation *mix_presentation = *pmix_presentation;
if (!mix_presentation)
return;
for (int i = 0; i < mix_presentation->nb_submixes; i++) {
AVIAMFSubmix *sub_mix = mix_presentation->submixes[i];
for (int j = 0; j < sub_mix->nb_elements; j++) {
AVIAMFSubmixElement *submix_element = sub_mix->elements[j];
av_opt_free(submix_element);
av_free(submix_element->element_mix_config);
av_free(submix_element);
}
av_free(sub_mix->elements);
for (int j = 0; j < sub_mix->nb_layouts; j++) {
AVIAMFSubmixLayout *submix_layout = sub_mix->layouts[j];
av_opt_free(submix_layout);
av_free(submix_layout);
}
av_free(sub_mix->layouts);
av_free(sub_mix->output_mix_config);
av_free(sub_mix);
}
av_opt_free(mix_presentation);
av_free(mix_presentation->submixes);
av_freep(pmix_presentation);
}