diff options
| -rw-r--r-- | src/pcm_byteswap.c | 26 | ||||
| -rw-r--r-- | src/pcm_byteswap.h | 17 |
2 files changed, 43 insertions, 0 deletions
diff --git a/src/pcm_byteswap.c b/src/pcm_byteswap.c index 4e604c79a..63f116211 100644 --- a/src/pcm_byteswap.c +++ b/src/pcm_byteswap.c @@ -68,3 +68,29 @@ const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer, return buf; } + +const void * +pcm_byteswap(struct pcm_buffer *buffer, enum sample_format format, + const void *src, size_t size) +{ + switch (format) { + case SAMPLE_FORMAT_UNDEFINED: + case SAMPLE_FORMAT_S24: + /* not implemented */ + return NULL; + + case SAMPLE_FORMAT_S8: + return src; + + case SAMPLE_FORMAT_S16: + return pcm_byteswap_16(buffer, src, size); + + case SAMPLE_FORMAT_S24_P32: + case SAMPLE_FORMAT_S32: + return pcm_byteswap_32(buffer, src, size); + } + + /* unreachable */ + assert(false); + return NULL; +} diff --git a/src/pcm_byteswap.h b/src/pcm_byteswap.h index 1098a2fe1..0836a2512 100644 --- a/src/pcm_byteswap.h +++ b/src/pcm_byteswap.h @@ -20,6 +20,8 @@ #ifndef MPD_PCM_BYTESWAP_H #define MPD_PCM_BYTESWAP_H +#include "audio_format.h" + #include <stdint.h> #include <stddef.h> @@ -47,4 +49,19 @@ const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer, const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer, const int32_t *src, size_t len); +/** + * Changes the endianness of PCM data. + * + * @param buffer the destination pcm_buffer object + * @param format the sample format (both input and output) + * @param src the source PCM buffer + * @param src_size the number of bytes in #src + * @return the destination buffer, or NULL if the sample format is not + * supported + */ +G_GNUC_MALLOC +const void * +pcm_byteswap(struct pcm_buffer *buffer, enum sample_format format, + const void *src, size_t size); + #endif |