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Add support for 24bit samples encoded in the LSB of 32 bit words

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This commit is contained in:
Lennart Poettering 2009-01-16 18:39:36 +01:00
parent 6dc76d1158
commit 4a13763797
13 changed files with 339 additions and 19 deletions
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46
src/pulse/sample.h
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@ -51,8 +51,10 @@
* \li PA_SAMPLE_ULAW - 8 bit mu-Law.
* \li PA_SAMPLE_S32LE - Signed 32 bit integer PCM, little endian.
* \li PA_SAMPLE_S32BE - Signed 32 bit integer PCM, big endian.
* \li PA_SAMPLE_242LE - Signed 24 bit integer PCM packed, little endian.
* \li PA_SAMPLE_242BE - Signed 24 bit integer PCM packed, big endian.
* \li PA_SAMPLE_S24LE - Signed 24 bit integer PCM packed, little endian.
* \li PA_SAMPLE_S24BE - Signed 24 bit integer PCM packed, big endian.
* \li PA_SAMPLE_S24_32LE - Signed 24 bit integer PCM in LSB of 32 bit words, little endian.
* \li PA_SAMPLE_S24_32BE - Signed 24 bit integer PCM in LSB of 32 bit words, big endian.
*
* The floating point sample formats have the range from -1.0 to 1.0.
*
@ -61,14 +63,14 @@
*
* \section rate_sec Sample Rates
*
* PulseAudio supports any sample rate between 1 Hz and 4 GHz. There is no
* PulseAudio supports any sample rate between 1 Hz and 192000 Hz. There is no
* point trying to exceed the sample rate of the output device though as the
* signal will only get downsampled, consuming CPU on the machine running the
* server.
*
* \section chan_sec Channels
*
* PulseAudio supports up to 16 individiual channels. The order of the
* PulseAudio supports up to 32 individiual channels. The order of the
* channels is up to the application, but they must be continous. To map
* channels to speakers, see \ref channelmap.
*
@ -138,10 +140,10 @@ typedef enum pa_sample_format {
/**< Signed 16 Bit PCM, big endian */
PA_SAMPLE_FLOAT32LE,
/**< 32 Bit IEEE floating point, little endian, range -1 to 1 */
/**< 32 Bit IEEE floating point, little endian (PC), range -1.0 to 1.0 */
PA_SAMPLE_FLOAT32BE,
/**< 32 Bit IEEE floating point, big endian, range -1 to 1 */
/**< 32 Bit IEEE floating point, big endian, range -1.0 to 1.0 */
PA_SAMPLE_S32LE,
/**< Signed 32 Bit PCM, little endian (PC) */
@ -150,10 +152,16 @@ typedef enum pa_sample_format {
/**< Signed 32 Bit PCM, big endian */
PA_SAMPLE_S24LE,
/**< Signed 24 Bit PCM packed, little endian (PC) */
/**< Signed 24 Bit PCM packed, little endian (PC). \since 0.9.15 */
PA_SAMPLE_S24BE,
/**< Signed 24 Bit PCM packed, big endian */
/**< Signed 24 Bit PCM packed, big endian. \since 0.9.15 */
PA_SAMPLE_S24_32LE,
/**< Signed 24 Bit PCM in LSB of 32 Bit words, little endian (PC). \since 0.9.15 */
PA_SAMPLE_S24_32BE,
/**< Signed 24 Bit PCM in LSB of 32 Bit words, big endian. \since 0.9.15 */
PA_SAMPLE_MAX,
/**< Upper limit of valid sample types */
@ -169,16 +177,21 @@ typedef enum pa_sample_format {
#define PA_SAMPLE_FLOAT32NE PA_SAMPLE_FLOAT32BE
/** Signed 32 Bit PCM, native endian */
#define PA_SAMPLE_S32NE PA_SAMPLE_S32BE
/** Signed 24 Bit PCM packed, native endian */
/** Signed 24 Bit PCM packed, native endian. \since 0.9.15 */
#define PA_SAMPLE_S24NE PA_SAMPLE_S24BE
/** Signed 24 Bit PCM in LSB of 32 Bit words, native endian. \since 0.9.15 */
#define PA_SAMPLE_S24_32NE PA_SAMPLE_S24_32BE
/** Signed 16 Bit PCM reverse endian */
#define PA_SAMPLE_S16RE PA_SAMPLE_S16LE
/** 32 Bit IEEE floating point, reverse endian */
#define PA_SAMPLE_FLOAT32RE PA_SAMPLE_FLOAT32LE
/** Signed 32 Bit PCM, reverse endian */
#define PA_SAMPLE_S32RE PA_SAMPLE_S32LE
/** Signed 24 Bit PCM, packed reverse endian */
#define PA_SAMPLE_S24RE PA_SAMPLE_242LE
/** Signed 24 Bit PCM, packed reverse endian. \since 0.9.15 */
#define PA_SAMPLE_S24RE PA_SAMPLE_S24LE
/** Signed 24 Bit PCM, in LSB of 32 Bit words, reverse endian. \since 0.9.15 */
#define PA_SAMPLE_S24_32RE PA_SAMPLE_S24_32LE
#else
/** Signed 16 Bit PCM, native endian */
#define PA_SAMPLE_S16NE PA_SAMPLE_S16LE
@ -186,16 +199,21 @@ typedef enum pa_sample_format {
#define PA_SAMPLE_FLOAT32NE PA_SAMPLE_FLOAT32LE
/** Signed 32 Bit PCM, native endian */
#define PA_SAMPLE_S32NE PA_SAMPLE_S32LE
/** Signed 24 Bit PCM packed, native endian */
/** Signed 24 Bit PCM packed, native endian. \since 0.9.15 */
#define PA_SAMPLE_S24NE PA_SAMPLE_S24LE
/** Signed 24 Bit PCM in LSB of 32 Bit words, native endian. \since 0.9.15 */
#define PA_SAMPLE_S24_32NE PA_SAMPLE_S24_32LE
/** Signed 16 Bit PCM, reverse endian */
#define PA_SAMPLE_S16RE PA_SAMPLE_S16BE
/** 32 Bit IEEE floating point, reverse endian */
#define PA_SAMPLE_FLOAT32RE PA_SAMPLE_FLOAT32BE
/** Signed 32 Bit PCM, reverse endian */
#define PA_SAMPLE_S32RE PA_SAMPLE_S32BE
/** Signed 24 Bit PCM packed, reverse endian */
/** Signed 24 Bit PCM, packed reverse endian. \since 0.9.15 */
#define PA_SAMPLE_S24RE PA_SAMPLE_S24BE
/** Signed 24 Bit PCM, in LSB of 32 Bit words, reverse endian. \since 0.9.15 */
#define PA_SAMPLE_S24_32RE PA_SAMPLE_S24_32BE
#endif
/** A Shortcut for PA_SAMPLE_FLOAT32NE */
@ -214,6 +232,8 @@ typedef enum pa_sample_format {
#define PA_SAMPLE_S32BE PA_SAMPLE_S32BE
#define PA_SAMPLE_S24LE PA_SAMPLE_S24LE
#define PA_SAMPLE_S24BE PA_SAMPLE_S24BE
#define PA_SAMPLE_S24_32LE PA_SAMPLE_S24_32LE
#define PA_SAMPLE_S24_32BE PA_SAMPLE_S24_32BE
/** \endcond */
/** A sample format and attribute specification */