sample format

Audio Sample Formats.

The data described by the sample format is always in native-endian order. Sample values can be expressed by native C types, hence the lack of a signed 24-bit sample format even though it is a common raw audio data format.

The floating-point formats are based on full volume being in the range [-1.0, 1.0]. Any values outside this range are beyond full volume level.

The data layout as used in   av_samples_fill_arrays()  and elsewhere in FFmpeg (such as   AVFrame  in libavcodec) is as follows:

For planar sample formats, each audio channel is in a separate data plane, and linesize is the buffer size, in bytes, for a single plane. All data planes must be the same size. For packed sample formats, only the first data plane is used, and samples for each channel are interleaved. In this case, linesize is the buffer size, in bytes, for the 1 plane.

Enumerator:

AV_SAMPLE_FMT_NONE
AV_SAMPLE_FMT_U8	unsigned 8 bits
AV_SAMPLE_FMT_S16	signed 16 bits
AV_SAMPLE_FMT_S32	signed 32 bits
AV_SAMPLE_FMT_FLT	float
AV_SAMPLE_FMT_DBL	double
AV_SAMPLE_FMT_U8P	unsigned 8 bits, planar
AV_SAMPLE_FMT_S16P	signed 16 bits, planar
AV_SAMPLE_FMT_S32P	signed 32 bits, planar
AV_SAMPLE_FMT_FLTP	float, planar
AV_SAMPLE_FMT_DBLP	double, planar
AV_SAMPLE_FMT_NB	Number of sample formats. DO NOT USE if linking dynamically.