Agora RTC Objective-C API Reference
Refactor
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Data Fields | |
AUDIO_FRAME_TYPE | type |
int | samplesPerChannel |
agora::rtc::BYTES_PER_SAMPLE | bytesPerSample |
int | channels |
int | samplesPerSec |
void * | buffer |
int64_t | renderTimeMs |
int | avsync_type |
int64_t | presentationMs |
int | audioTrackNumber |
uint32_t | rtpTimestamp |
The definition of the AudioFrame struct.
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inline |
AUDIO_FRAME_TYPE type |
The audio frame type: AUDIO_FRAME_TYPE.
int samplesPerChannel |
The number of samples per channel in this frame.
agora::rtc::BYTES_PER_SAMPLE bytesPerSample |
The number of bytes per sample: #BYTES_PER_SAMPLE
int channels |
The number of audio channels (data is interleaved, if stereo).
int samplesPerSec |
The sample rate
void* buffer |
The data buffer of the audio frame. When the audio frame uses a stereo channel, the data buffer is interleaved.
Buffer data size: buffer = samplesPerChannel × channels × bytesPerSample.
int64_t renderTimeMs |
The timestamp to render the audio data.
You can use this timestamp to restore the order of the captured audio frame, and synchronize audio and video frames in video scenarios, including scenarios where external video sources are used.
int avsync_type |
A reserved parameter.
You can use this presentationMs parameter to indicate the presenation milisecond timestamp, this will then filled into audio4 extension part, the remote side could use this pts in av sync process with video frame.
int64_t presentationMs |
The pts timestamp of this audio frame.
This timestamp is used to indicate the origin pts time of the frame, and sync with video frame by the pts time stamp
int audioTrackNumber |
The number of the audio track.
uint32_t rtpTimestamp |
RTP timestamp of the first sample in the audio frame