diff options
Diffstat (limited to 'src/gaudio/sys_defs.h')
| -rw-r--r-- | src/gaudio/sys_defs.h | 64 |
1 files changed, 10 insertions, 54 deletions
diff --git a/src/gaudio/sys_defs.h b/src/gaudio/sys_defs.h index a9a951b7..2bd0e2c8 100644 --- a/src/gaudio/sys_defs.h +++ b/src/gaudio/sys_defs.h @@ -34,19 +34,6 @@ /* Type definitions */ /*===========================================================================*/ -/** - * @brief Contains Audio Data Samples - * @note This structure is followed immediately by the sample data itself. - * When allocating the buffers for the sample data put this structure - * at the beginning of the buffer. - */ -typedef struct GAudioData { - gfxQueueASyncItem next; // @< Used for queuing the buffers - size_t size; // @< The size of the buffer area following this structure (in bytes) - size_t len; // @< The length of the data in the buffer area (in bytes) -} GAudioData; - - // Event types for GAUDIO #define GEVENT_AUDIO_PLAY (GEVENT_GAUDIO_FIRST+0) #define GEVENT_AUDIO_RECORD (GEVENT_GAUDIO_FIRST+1) @@ -95,7 +82,7 @@ typedef struct GAudioData { */ #define GAUDIO_RECORD_LOSTEVENT 0x0001 /**< @brief The last GEVENT_AUDIO_IN event was lost */ #define GAUDIO_RECORD_RECORDING 0x0002 /**< @brief The audio recording system is currently recording */ - #define GAUDIO_RECORD_GOTBLOCK 0x0004 /**< @brief An audio buffer is ready for processing */ + #define GAUDIO_RECORD_GOTBUFFER 0x0004 /**< @brief An audio buffer is ready for processing */ #define GAUDIO_RECORD_STALL 0x0008 /**< @brief The recording process has stalled due to no free buffers */ /** @} */ } GEventAudioRecord; @@ -110,41 +97,6 @@ typedef struct GAudioData { extern "C" { #endif -/** - * @brief Allocate some audio buffers and put them on the free list - * @return TRUE is it succeeded. FALSE on allocation failure. - * - * @param[in] num The number of buffers to allocate - * @param[in] size The size (in bytes) of each buffer - * - * @api - */ -bool_t gaudioAllocBuffers(unsigned num, size_t size); - -/** - * @brief Get an audio buffer from the free list - * @return A GAudioData pointer or NULL if the timeout is exceeded - * - * @params[in] ms The maximum amount of time in milliseconds to wait for a buffer if one is not available. - * - * @api - */ -GAudioData *gaudioGetBuffer(delaytime_t ms); - -/** - * @brief Release a buffer back to the free list - * - * @param[in] paud The buffer to put (back) on the free-list. - * - * @note This call should be used to return any buffers that were taken from - * the free-list once they have been finished with. It can also be used - * to put new buffers onto the free-list. Just make sure the "size" field - * of the GAudioData structure has been filled in first. - * - * @api - */ -void gaudioReleaseBuffer(GAudioData *paud); - #if GAUDIO_NEED_PLAY || defined(__DOXYGEN__) /** * @brief Set the audio device to play on the specified channel and with the specified @@ -172,7 +124,7 @@ void gaudioReleaseBuffer(GAudioData *paud); * @param[in] paud The audio sample buffer to play. It can be NULL (used to restart paused audio) * * @note Calling this will cancel any pause. - * @note Before calling this function the len field of the GAudioData structure must be + * @note Before calling this function the len field of the GDataBuffer structure must be * specified (in bytes). * @note For stereo channels the sample data is interleaved in the buffer. * @note This call returns before the data has completed playing. Subject to available buffers (which @@ -182,7 +134,7 @@ void gaudioReleaseBuffer(GAudioData *paud); * * @api */ - void gaudioPlay(GAudioData *paud); + void gaudioPlay(GDataBuffer *paud); /** * @brief Pause any currently playing sounds. @@ -298,16 +250,20 @@ void gaudioReleaseBuffer(GAudioData *paud); /** * @brief Get a filled audio buffer from the recording list - * @return A GAudioData pointer or NULL if the timeout is exceeded + * @return A GDataBuffer pointer or NULL if the timeout is exceeded * * @params[in] ms The maximum amount of time in milliseconds to wait for data if some is not currently available. * * @note After processing the audio data, your application must return the buffer to the free-list so that * it can be used to record more audio into. This can be done via the play list using @p gaudioPlay() or - * directly using @p gaudioReleaseBuffer(). + * directly using @p gfxBufferRelease(). + * @note A buffer may be returned to the free-list before you have finished processing it provided you finish + * processing it before GADC re-uses it. This is useful when RAM usage is critical to reduce the number + * of buffers required. It works before the free list is a FIFO queue and therefore buffers are kept + * in the queue as long as possible before they are re-used. * @api */ - GAudioData *gaudioRecordGetData(delaytime_t ms); + GDataBuffer *gaudioRecordGetData(delaytime_t ms); #if GFX_USE_GEVENT || defined(__DOXYGEN__) /** |