avcodec_audio_channel_layout.h

Overview

The avcodec_audio_channel_layout.h file declares the enums used for audio codec.

Since

9

Related Modules

AudioDecoder

Summary

Enums

Name Description
OHOS::Media::AudioChannelSet : uint64_t {
FRONT_LEFT = 1ULL << 0U,
FRONT_RIGHT = 1ULL << 1U,
FRONT_CENTER = 1ULL << 2U,
LOW_FREQUENCY = 1ULL << 3U,
BACK_LEFT = 1ULL << 4U,
BACK_RIGHT = 1ULL << 5U,
FRONT_LEFT_OF_CENTER = 1ULL << 6U,
FRONT_RIGHT_OF_CENTER = 1ULL << 7U,
BACK_CENTER = 1ULL << 8U,
SIDE_LEFT = 1ULL << 9U,
SIDE_RIGHT = 1ULL << 10U,
TOP_CENTER = 1ULL << 11U,
TOP_FRONT_LEFT = 1ULL << 12U,
TOP_FRONT_CENTER = 1ULL << 13U,
TOP_FRONT_RIGHT = 1ULL << 14U,
TOP_BACK_LEFT = 1ULL << 15U,
TOP_BACK_CENTER = 1ULL << 16U,
TOP_BACK_RIGHT = 1ULL << 17U,
STEREO_LEFT = 1ULL << 29U,
STEREO_RIGHT = 1ULL << 30U,
WIDE_LEFT = 1ULL << 31U,
WIDE_RIGHT = 1ULL << 32U,
SURROUND_DIRECT_LEFT = 1ULL << 33U,
SURROUND_DIRECT_RIGHT = 1ULL << 34U,
LOW_FREQUENCY_2 = 1ULL << 35U,
TOP_SIDE_LEFT = 1ULL << 36U,
TOP_SIDE_RIGHT = 1ULL << 37U,
BOTTOM_FRONT_CENTER = 1ULL << 38U,
BOTTOM_FRONT_LEFT = 1ULL << 39U,
BOTTOM_FRONT_RIGHT = 1ULL << 40U,
AMBISONICS_ACN0 = 1ULL << 41U,
AMBISONICS_ACN1 = 1ULL << 42U,
AMBISONICS_ACN2 = 1ULL << 43U,
AMBISONICS_ACN3 = 1ULL << 44U,
AMBISONICS_W = AMBISONICS_ACN0,
AMBISONICS_Y = AMBISONICS_ACN1,
AMBISONICS_Z = AMBISONICS_ACN2,
AMBISONICS_X = AMBISONICS_ACN3,
AMBISONICS_ACN4 = 1ULL << 45U,
AMBISONICS_ACN5 = 1ULL << 46U,
AMBISONICS_ACN6 = 1ULL << 47U,
AMBISONICS_ACN7 = 1ULL << 48U,
AMBISONICS_ACN8 = 1ULL << 49U,
AMBISONICS_ACN9 = 1ULL << 50U,
AMBISONICS_ACN10 = 1ULL << 51U,
AMBISONICS_ACN11 = 1ULL << 52U,
AMBISONICS_ACN12 = 1ULL << 53U,
AMBISONICS_ACN13 = 1ULL << 54U,
AMBISONICS_ACN14 = 1ULL << 55U,
AMBISONICS_ACN15 = 1ULL << 56U
}
Enumerates the audio channel numbers. Each channel number is mapped to a variable of int64.
OHOS::Media::AudioChannelLayout : uint64_t {
UNKNOWN_CHANNEL_LAYOUT = 0,
MONO = (AudioChannelSet::FRONT_CENTER),
STEREO = (AudioChannelSet::FRONT_LEFT | AudioChannelSet::FRONT_RIGHT),
CH_2POINT1 = (STEREO | AudioChannelSet::LOW_FREQUENCY),
CH_2_1 = (STEREO | AudioChannelSet::BACK_CENTER),
SURROUND = (STEREO | AudioChannelSet::FRONT_CENTER),
CH_3POINT1 = (SURROUND | AudioChannelSet::LOW_FREQUENCY),
CH_4POINT0 = (SURROUND | AudioChannelSet::BACK_CENTER),
CH_4POINT1 = (CH_4POINT0 | AudioChannelSet::LOW_FREQUENCY),
CH_2_2 = (STEREO | AudioChannelSet::SIDE_LEFT | AudioChannelSet::SIDE_RIGHT),
QUAD = (STEREO | AudioChannelSet::BACK_LEFT | AudioChannelSet::BACK_RIGHT),
CH_5POINT0 = (SURROUND | AudioChannelSet::SIDE_LEFT | AudioChannelSet::SIDE_RIGHT),
CH_5POINT1 = (CH_5POINT0 | AudioChannelSet::LOW_FREQUENCY),
CH_5POINT0_BACK = (SURROUND | AudioChannelSet::BACK_LEFT | AudioChannelSet::BACK_RIGHT),
CH_5POINT1_BACK = (CH_5POINT0_BACK | AudioChannelSet::LOW_FREQUENCY),
CH_6POINT0 = (CH_5POINT0 | AudioChannelSet::BACK_CENTER),
CH_6POINT0_FRONT = (CH_2_2 | AudioChannelSet::FRONT_LEFT_OF_CENTER |
AudioChannelSet::FRONT_RIGHT_OF_CENTER),
HEXAGONAL = (CH_5POINT0_BACK | AudioChannelSet::BACK_CENTER),
CH_6POINT1 = (CH_5POINT1 | AudioChannelSet::BACK_CENTER),
CH_6POINT1_BACK = (CH_5POINT1_BACK | AudioChannelSet::BACK_CENTER),
CH_6POINT1_FRONT = (CH_6POINT0_FRONT | AudioChannelSet::LOW_FREQUENCY),
CH_7POINT0 = (CH_5POINT0 | AudioChannelSet::BACK_LEFT | AudioChannelSet::BACK_RIGHT),
CH_7POINT0_FRONT = (CH_5POINT0 | AudioChannelSet::FRONT_LEFT_OF_CENTER |
AudioChannelSet::FRONT_RIGHT_OF_CENTER),
CH_7POINT1 = (CH_5POINT1 | AudioChannelSet::BACK_LEFT | AudioChannelSet::BACK_RIGHT),
CH_7POINT1_WIDE = (CH_5POINT1 | AudioChannelSet::FRONT_LEFT_OF_CENTER |
AudioChannelSet::FRONT_RIGHT_OF_CENTER),
CH_7POINT1_WIDE_BACK = (CH_5POINT1_BACK | AudioChannelSet::FRONT_LEFT_OF_CENTER | AudioChannelSet::FRONT_RIGHT_OF_CENTER),
CH_3POINT1POINT2 = (CH_3POINT1 | AudioChannelSet::TOP_FRONT_LEFT |
AudioChannelSet::TOP_FRONT_RIGHT),
CH_5POINT1POINT2 = (CH_5POINT1 | AudioChannelSet::TOP_SIDE_LEFT |
AudioChannelSet::TOP_SIDE_RIGHT),
CH_5POINT1POINT4 = (CH_5POINT1 | AudioChannelSet::TOP_FRONT_LEFT |
AudioChannelSet::TOP_FRONT_RIGHT
| AudioChannelSet::TOP_BACK_LEFT | AudioChannelSet::TOP_BACK_RIGHT),
CH_7POINT1POINT2 = (CH_7POINT1 | AudioChannelSet::TOP_SIDE_LEFT |
AudioChannelSet::TOP_SIDE_RIGHT),
CH_7POINT1POINT4 = (CH_7POINT1 | AudioChannelSet::TOP_FRONT_LEFT |
AudioChannelSet::TOP_FRONT_RIGHT
| AudioChannelSet::TOP_BACK_LEFT | AudioChannelSet::TOP_BACK_RIGHT),
CH_9POINT1POINT4 = (CH_7POINT1POINT4 | AudioChannelSet::WIDE_LEFT |
AudioChannelSet::WIDE_RIGHT),
CH_9POINT1POINT6 = (CH_9POINT1POINT4 | AudioChannelSet::TOP_SIDE_LEFT |
AudioChannelSet::TOP_SIDE_RIGHT),
CH_10POINT2 = (AudioChannelSet::FRONT_LEFT | AudioChannelSet::FRONT_RIGHT |
AudioChannelSet::FRONT_CENTER |
AudioChannelSet::TOP_FRONT_LEFT | AudioChannelSet::TOP_FRONT_RIGHT | AudioChannelSet::BACK_LEFT |
AudioChannelSet::BACK_RIGHT | AudioChannelSet::BACK_CENTER | AudioChannelSet::SIDE_LEFT |
AudioChannelSet::SIDE_RIGHT | AudioChannelSet::WIDE_LEFT | AudioChannelSet::WIDE_RIGHT),
CH_22POINT2 = (CH_7POINT1POINT4 | AudioChannelSet::FRONT_LEFT_OF_CENTER |
AudioChannelSet::FRONT_RIGHT_OF_CENTER | AudioChannelSet::BACK_CENTER |
AudioChannelSet::TOP_CENTER |
AudioChannelSet::TOP_FRONT_CENTER |, AudioChannelSet::TOP_BACK_CENTER |
AudioChannelSet::TOP_SIDE_LEFT |
AudioChannelSet::TOP_SIDE_RIGHT |AudioChannelSet::BOTTOM_FRONT_LEFT |
AudioChannelSet::BOTTOM_FRONT_RIGHT
|AudioChannelSet::BOTTOM_FRONT_CENTER | AudioChannelSet::LOW_FREQUENCY_2),
OCTAGONAL = (CH_5POINT0 | AudioChannelSet::BACK_LEFT | AudioChannelSet::BACK_CENTER |
AudioChannelSet::BACK_RIGHT),
HEXADECAGONAL = (OCTAGONAL | AudioChannelSet::WIDE_LEFT | AudioChannelSet::WIDE_RIGHT |
AudioChannelSet::TOP_BACK_LEFT | AudioChannelSet::TOP_BACK_RIGHT |
AudioChannelSet::TOP_BACK_CENTER |
AudioChannelSet::TOP_FRONT_CENTER | AudioChannelSet::TOP_FRONT_LEFT |
AudioChannelSet::TOP_FRONT_RIGHT),
STEREO_DOWNMIX = (AudioChannelSet::STEREO_LEFT | AudioChannelSet::STEREO_RIGHT),
HOA_FIRST = AudioChannelSet::AMBISONICS_ACN0 | AudioChannelSet::AMBISONICS_ACN1 |
AudioChannelSet::AMBISONICS_ACN2 |AudioChannelSet::AMBISONICS_ACN3,
HOA_SECOND = HOA_FIRST | AudioChannelSet::AMBISONICS_ACN4 | AudioChannelSet::AMBISONICS_ACN5 |
AudioChannelSet::AMBISONICS_ACN6 | AudioChannelSet::AMBISONICS_ACN7 |
AudioChannelSet::AMBISONICS_ACN8,
HOA_THIRD = HOA_SECOND | AudioChannelSet::AMBISONICS_ACN9 |
AudioChannelSet::AMBISONICS_ACN10 |
AudioChannelSet::AMBISONICS_ACN11 | AudioChannelSet::AMBISONICS_ACN12 |
AudioChannelSet::AMBISONICS_ACN13 | AudioChannelSet::AMBISONICS_ACN14
|AudioChannelSet::AMBISONICS_ACN15
}
Enumerates the types of the audio channel numbers. The output format of the decoder is represented as the channel type of the codec.