expo-av/build/Audio/RecordingConstants.d.ts

Expo universal module for Audio and Video playback

import type { RecordingOptions } from './Recording.types';
export declare enum AndroidOutputFormat {
    DEFAULT = 0,
    THREE_GPP = 1,
    MPEG_4 = 2,
    AMR_NB = 3,
    AMR_WB = 4,
    AAC_ADIF = 5,
    AAC_ADTS = 6,
    RTP_AVP = 7,
    MPEG2TS = 8,
    WEBM = 9
}
export declare enum AndroidAudioEncoder {
    DEFAULT = 0,
    AMR_NB = 1,
    AMR_WB = 2,
    AAC = 3,
    HE_AAC = 4,
    AAC_ELD = 5
}
/**
 * > **Note** Not all of the iOS formats included in this list of constants are currently supported by iOS,
 * > in spite of appearing in the Apple source code. For an accurate list of formats supported by iOS, see
 * > [Core Audio Codecs](https://developer.apple.com/library/content/documentation/MusicAudio/Conceptual/CoreAudioOverview/CoreAudioEssentials/CoreAudioEssentials.html)
 * > and [iPhone Audio File Formats](https://developer.apple.com/library/content/documentation/MusicAudio/Conceptual/CoreAudioOverview/CoreAudioEssentials/CoreAudioEssentials.html).
 */
export declare enum IOSOutputFormat {
    LINEARPCM = "lpcm",
    AC3 = "ac-3",
    '60958AC3' = "cac3",
    APPLEIMA4 = "ima4",
    MPEG4AAC = "aac ",
    MPEG4CELP = "celp",
    MPEG4HVXC = "hvxc",
    MPEG4TWINVQ = "twvq",
    MACE3 = "MAC3",
    MACE6 = "MAC6",
    ULAW = "ulaw",
    ALAW = "alaw",
    QDESIGN = "QDMC",
    QDESIGN2 = "QDM2",
    QUALCOMM = "Qclp",
    MPEGLAYER1 = ".mp1",
    MPEGLAYER2 = ".mp2",
    MPEGLAYER3 = ".mp3",
    APPLELOSSLESS = "alac",
    MPEG4AAC_HE = "aach",
    MPEG4AAC_LD = "aacl",
    MPEG4AAC_ELD = "aace",
    MPEG4AAC_ELD_SBR = "aacf",
    MPEG4AAC_ELD_V2 = "aacg",
    MPEG4AAC_HE_V2 = "aacp",
    MPEG4AAC_SPATIAL = "aacs",
    AMR = "samr",
    AMR_WB = "sawb",
    AUDIBLE = "AUDB",
    ILBC = "ilbc",
    DVIINTELIMA = 1836253201,
    MICROSOFTGSM = 1836253233,
    AES3 = "aes3",
    ENHANCEDAC3 = "ec-3"
}
export declare enum IOSAudioQuality {
    MIN = 0,
    LOW = 32,
    MEDIUM = 64,
    HIGH = 96,
    MAX = 127
}
export declare enum IOSBitRateStrategy {
    CONSTANT = 0,
    LONG_TERM_AVERAGE = 1,
    VARIABLE_CONSTRAINED = 2,
    VARIABLE = 3
}
/**
 * Constant which contains definitions of the two preset examples of `RecordingOptions`, as implemented in the Audio SDK.
 *
 * # `HIGH_QUALITY`
 * ```ts
 * RecordingOptionsPresets.HIGH_QUALITY = {
 *   isMeteringEnabled: true,
 *   android: {
 *     extension: '.m4a',
 *     outputFormat: AndroidOutputFormat.MPEG_4,
 *     audioEncoder: AndroidAudioEncoder.AAC,
 *     sampleRate: 44100,
 *     numberOfChannels: 2,
 *     bitRate: 128000,
 *   },
 *   ios: {
 *     extension: '.m4a',
 *     outputFormat: IOSOutputFormat.MPEG4AAC,
 *     audioQuality: IOSAudioQuality.MAX,
 *     sampleRate: 44100,
 *     numberOfChannels: 2,
 *     bitRate: 128000,
 *     linearPCMBitDepth: 16,
 *     linearPCMIsBigEndian: false,
 *     linearPCMIsFloat: false,
 *   },
 *   web: {
 *     mimeType: 'audio/webm',
 *     bitsPerSecond: 128000,
 *   },
 * };
 * ```
 *
 * # `LOW_QUALITY`
 * ```ts
 * RecordingOptionsPresets.LOW_QUALITY = {
 *   isMeteringEnabled: true,
 *   android: {
 *     extension: '.3gp',
 *     outputFormat: AndroidOutputFormat.THREE_GPP,
 *     audioEncoder: AndroidAudioEncoder.AMR_NB,
 *     sampleRate: 44100,
 *     numberOfChannels: 2,
 *     bitRate: 128000,
 *   },
 *   ios: {
 *     extension: '.caf',
 *     audioQuality: IOSAudioQuality.MIN,
 *     sampleRate: 44100,
 *     numberOfChannels: 2,
 *     bitRate: 128000,
 *     linearPCMBitDepth: 16,
 *     linearPCMIsBigEndian: false,
 *     linearPCMIsFloat: false,
 *   },
 *   web: {
 *     mimeType: 'audio/webm',
 *     bitsPerSecond: 128000,
 *   },
 * };
 * ```
 */
export declare const RecordingOptionsPresets: Record<string, RecordingOptions>;
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