ALSA project - the C library reference: PCM Interface
SND_PCM_FORMAT_UNKNOWN Unknown SND_PCM_FORMAT_S8 Signed 8 bit SND_PCM_FORMAT_U8 Unsigned 8 bit SND_PCM_FORMAT_S16_LE Signed 16 bit Little Endian SND_PCM_FORMAT_S16_BE Signed 16 bit Big Endian SND_PCM ......