diff options
Diffstat (limited to 'src/pcm_resample.h')
| -rw-r--r-- | src/pcm_resample.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/pcm_resample.h b/src/pcm_resample.h index 66a746ae2..5042f4c99 100644 --- a/src/pcm_resample.h +++ b/src/pcm_resample.h @@ -31,6 +31,10 @@ #include <samplerate.h> #endif +/** + * This object is statically allocated (within another struct), and + * holds buffer allocations and the state for the resampler. + */ struct pcm_resample_state { #ifdef HAVE_LIBSAMPLERATE SRC_STATE *state; @@ -50,10 +54,29 @@ struct pcm_resample_state { struct pcm_buffer buffer; }; +/** + * Initializes a pcm_resample_state object. + */ void pcm_resample_init(struct pcm_resample_state *state); +/** + * Deinitializes a pcm_resample_state object and frees allocated + * memory. + */ void pcm_resample_deinit(struct pcm_resample_state *state); +/** + * Resamples 16 bit PCM data. + * + * @param state an initialized pcm_resample_state object + * @param channels the number of channels + * @param src_rate the source sample rate + * @param src the source PCM buffer + * @param src_size the size of #src in bytes + * @param dest_rate the requested destination sample rate + * @param dest_size_r returns the number of bytes of the destination buffer + * @return the destination buffer + */ const int16_t * pcm_resample_16(struct pcm_resample_state *state, uint8_t channels, @@ -62,6 +85,18 @@ pcm_resample_16(struct pcm_resample_state *state, unsigned dest_rate, size_t *dest_size_r); +/** + * Resamples 24 bit PCM data. + * + * @param state an initialized pcm_resample_state object + * @param channels the number of channels + * @param src_rate the source sample rate + * @param src the source PCM buffer + * @param src_size the size of #src in bytes + * @param dest_rate the requested destination sample rate + * @param dest_size_r returns the number of bytes of the destination buffer + * @return the destination buffer + */ const int32_t * pcm_resample_24(struct pcm_resample_state *state, uint8_t channels, |