416 static const struct {
437 return bitmap < 0x40000 ? bitmap : 0;
440 channels = tag & 0xFFFF;
443 layout_map = mov_ch_layout_map[channels];
446 for (i = 0; layout_map[i].
tag != 0; i++) {
447 if (layout_map[i].tag == tag)
450 return layout_map[i].
layout;
458 return 1
U << (label - 1);
467 uint64_t channel_layout,
490 layout_map = mov_ch_layout_map[channels];
493 for (i = 0; layouts[i] != 0; i++) {
494 if (layouts[i] & 0xFFFF != channels)
496 for (j = 0; layout_map[j].
tag != 0; j++) {
497 if (layout_map[j].tag == layouts[i] &&
498 layout_map[j].
layout == channel_layout)
501 if (layout_map[j].tag)
508 if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) {
510 *bitmap = (uint32_t)channel_layout;
static const struct @80 mov_codec_ch_layouts[]
static const struct MovChannelLayoutMap mov_ch_layout_map_8ch[]
#define AV_CH_LAYOUT_7POINT1
#define AV_CH_LAYOUT_4POINT1
#define AV_CH_TOP_FRONT_RIGHT
#define AV_CH_LAYOUT_6POINT1
#define AV_CH_LAYOUT_6POINT0
#define AV_CH_LAYOUT_SURROUND
MovChannelLayoutTag
mov 'chan' tag reading/writing.
#define AV_CH_TOP_FRONT_LEFT
#define AV_CH_TOP_FRONT_CENTER
static const struct MovChannelLayoutMap mov_ch_layout_map_2ch[]
static const struct MovChannelLayoutMap mov_ch_layout_map_6ch[]
#define AV_CH_LAYOUT_7POINT0_FRONT
uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap)
mov 'chan' tag reading/writing.
#define AV_CH_LAYOUT_4POINT0
#define AV_CH_LAYOUT_7POINT0
#define AV_CH_SURROUND_DIRECT_RIGHT
#define AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_5POINT0
static const struct MovChannelLayoutMap * mov_ch_layout_map[]
#define AV_CH_TOP_BACK_LEFT
#define AV_CH_LAYOUT_HEXAGONAL
#define AV_CH_LOW_FREQUENCY
uint32_t ff_mov_get_channel_layout_tag(enum CodecID codec_id, uint64_t channel_layout, uint32_t *bitmap)
Get the channel layout tag for the specified codec id and channel layout.
audio conversion routines
static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[]
#define AV_CH_LAYOUT_5POINT1
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
#define AV_CH_LAYOUT_QUAD
static const struct MovChannelLayoutMap mov_ch_layout_map_3ch[]
#define AV_CH_LAYOUT_6POINT0_FRONT
#define AV_CH_STEREO_RIGHT
See AV_CH_STEREO_LEFT.
#define AV_CH_LAYOUT_STEREO_DOWNMIX
#define AV_CH_LAYOUT_3POINT1
static enum MovChannelLayoutTag mov_ch_layouts_alac[]
uint32_t ff_mov_get_channel_label(uint32_t label)
Get the channel layout for the specified channel layout tag.
#define AV_CH_FRONT_LEFT_OF_CENTER
#define AV_CH_LAYOUT_5POINT1_BACK
static enum MovChannelLayoutTag mov_ch_layouts_ac3[]
#define AV_CH_LAYOUT_6POINT1_BACK
#define AV_CH_FRONT_RIGHT_OF_CENTER
static const struct MovChannelLayoutMap mov_ch_layout_map_4ch[]
static const struct MovChannelLayoutMap mov_ch_layout_map_1ch[]
static enum MovChannelLayoutTag mov_ch_layouts_aac[]
#define AV_CH_TOP_BACK_RIGHT
static const struct MovChannelLayoutMap mov_ch_layout_map_misc[]
#define AV_CH_LAYOUT_5POINT0_BACK
#define AV_CH_LAYOUT_OCTAGONAL
enum MovChannelLayoutTag * layouts
#define AV_CH_BACK_CENTER
#define AV_CH_LAYOUT_7POINT1_WIDE
static const struct MovChannelLayoutMap mov_ch_layout_map_7ch[]
#define AV_CH_LAYOUT_2POINT1
CodecID
Identify the syntax and semantics of the bitstream.
static const struct MovChannelLayoutMap mov_ch_layout_map_5ch[]
#define AV_CH_SURROUND_DIRECT_LEFT
#define AV_CH_LAYOUT_6POINT1_FRONT
#define AV_CH_LAYOUT_MONO
#define AV_CH_STEREO_LEFT
Stereo downmix.