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avutil/samplefmt: improve doxygen

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Categorize the enum and funcs to "Audio related".

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Timothy Gu 2014-07-04 11:06:41 -07:00 committed by Michael Niedermayer
parent baef3ba727
commit b27555a3a0
1 changed files with 36 additions and 13 deletions
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49
libavutil/samplefmt.h
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@ -25,26 +25,36 @@
#include "attributes.h" #include "attributes.h"
/** /**
* Audio Sample Formats * @addtogroup lavu_audio
* @{
*
* @defgroup lavu_sampfmts Audio sample formats
*
* Audio sample format enumeration and related convenience functions.
* @{
*
*/
/**
* 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:
* *
* @par * @par
* 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.
*
* @par
* 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.
*
* @par
* 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, * 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 * 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 * 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, * plane is used, and samples for each channel are interleaved. In this case,
* linesize is the buffer size, in bytes, for the 1 plane. * linesize is the buffer size, in bytes, for the 1 plane.
*
*/ */
enum AVSampleFormat { enum AVSampleFormat {
AV_SAMPLE_FMT_NONE = -1, AV_SAMPLE_FMT_NONE = -1,
@ -157,6 +167,15 @@ int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt);
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
enum AVSampleFormat sample_fmt, int align); enum AVSampleFormat sample_fmt, int align);
/**
* @}
*
* @defgroup lavu_sampmanip Samples manipulation
*
* Functions that manipulate audio samples
* @{
*/
/** /**
* Fill plane data pointers and linesize for samples with sample * Fill plane data pointers and linesize for samples with sample
* format sample_fmt. * format sample_fmt.
@ -253,4 +272,8 @@ int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset,
int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples, int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples,
int nb_channels, enum AVSampleFormat sample_fmt); int nb_channels, enum AVSampleFormat sample_fmt);
/**
* @}
* @}
*/
#endif /* AVUTIL_SAMPLEFMT_H */ #endif /* AVUTIL_SAMPLEFMT_H */