AVAudioServiceType {.importc: "enum $1", header: "<libavcodec/defs.h>".} = enum
AV_AUDIO_SERVICE_TYPE_MAIN = 0, AV_AUDIO_SERVICE_TYPE_EFFECTS = 1,
AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2,
AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3,
AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5,
AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7,
AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, AV_AUDIO_SERVICE_TYPE_NB
AVDiscard {.importc: "enum $1", header: "<libavcodec/defs.h>".} = enum
AVDISCARD_NONE = -16, AVDISCARD_DEFAULT = 0, AVDISCARD_NONREF = 8,
AVDISCARD_BIDIR = 16, AVDISCARD_NONINTRA = 24, AVDISCARD_NONKEY = 32,
AVDISCARD_ALL = 48