iamf.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/iamf.h"
#include "libavutil/mem.h"
#include "iamf.h"

Go to the source code of this file.

Functions
void	ff_iamf_free_audio_element (IAMFAudioElement **paudio_element)
void	ff_iamf_free_mix_presentation (IAMFMixPresentation **pmix_presentation)
void	ff_iamf_uninit_context (IAMFContext *c)

Variables
const AVChannelLayout	ff_iamf_scalable_ch_layouts [10]
const AVChannelLayout	ff_iamf_expanded_scalable_ch_layouts [13]
const struct IAMFSoundSystemMap	ff_iamf_sound_system_map [14]

Function Documentation

ff_iamf_free_audio_element()

void ff_iamf_free_audio_element

(

IAMFAudioElement **

paudio_element

)

Definition at line 143 of file iamf.c.

Referenced by audio_element_obu(), ff_iamf_add_audio_element(), and ff_iamf_uninit_context().

ff_iamf_free_mix_presentation()

void ff_iamf_free_mix_presentation

(

IAMFMixPresentation **

pmix_presentation

)

Definition at line 158 of file iamf.c.

Referenced by ff_iamf_add_mix_presentation(), ff_iamf_uninit_context(), and mix_presentation_obu().

ff_iamf_uninit_context()

void ff_iamf_uninit_context

(

IAMFContext *

c

)

Definition at line 172 of file iamf.c.

Referenced by ff_iamf_read_deinit(), iamf_deinit(), and mov_free().

Variable Documentation

ff_iamf_scalable_ch_layouts

const AVChannelLayout ff_iamf_scalable_ch_layouts[10]

Initial value:

= {
    AV_CHANNEL_LAYOUT_MONO,
    AV_CHANNEL_LAYOUT_STEREO,
    
    AV_CHANNEL_LAYOUT_5POINT1,
    
    AV_CHANNEL_LAYOUT_5POINT1POINT2,
    
    AV_CHANNEL_LAYOUT_5POINT1POINT4_BACK,
    
    AV_CHANNEL_LAYOUT_7POINT1,
    
    AV_CHANNEL_LAYOUT_7POINT1POINT2,
    
    AV_CHANNEL_LAYOUT_7POINT1POINT4_BACK,
    
    AV_CHANNEL_LAYOUT_3POINT1POINT2,
    
    AV_CHANNEL_LAYOUT_BINAURAL,
}

Definition at line 27 of file iamf.c.

Referenced by ff_iamf_add_audio_element(), get_loudspeaker_layout(), and scalable_channel_layout_config().

ff_iamf_expanded_scalable_ch_layouts

const AVChannelLayout ff_iamf_expanded_scalable_ch_layouts[13]

Definition at line 48 of file iamf.c.

Referenced by ff_iamf_add_audio_element(), get_loudspeaker_layout(), and scalable_channel_layout_config().

ff_iamf_sound_system_map

const struct IAMFSoundSystemMap ff_iamf_sound_system_map[14]

Initial value:

= {
    { SOUND_SYSTEM_A_0_2_0, AV_CHANNEL_LAYOUT_STEREO },
    { SOUND_SYSTEM_B_0_5_0, AV_CHANNEL_LAYOUT_5POINT1 },
    { SOUND_SYSTEM_C_2_5_0, AV_CHANNEL_LAYOUT_5POINT1POINT2 },
    { 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 },
    { SOUND_SYSTEM_13_9_1_6, AV_CHANNEL_LAYOUT_9POINT1POINT6 },
}

Definition at line 120 of file iamf.c.

Referenced by iamf_write_mixing_presentation(), and mix_presentation_obu().