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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef PCM_PLAYBACK_H
#define PCM_PLAYBACK_H
#include <sys/types.h>
/** RAW PCM routines used with playback and recording **/
/* Typedef for registered callback */
typedef void (*pcm_more_callback_type)(unsigned char **start,
size_t *size);
typedef int (*pcm_more_callback_type2)(int status);
/* set the pcm frequency - use values in hw_sampr_list
* use -1 for the default frequency
*/
void pcm_set_frequency(unsigned int frequency);
/* apply settings to hardware immediately */
void pcm_apply_settings(void);
/** RAW PCM playback routines **/
/* Reenterable locks for locking and unlocking the playback interrupt */
void pcm_play_lock(void);
void pcm_play_unlock(void);
void pcm_init(void);
void pcm_postinit(void);
/* This is for playing "raw" PCM data */
void pcm_play_data(pcm_more_callback_type get_more,
unsigned char* start, size_t size);
void pcm_calculate_peaks(int *left, int *right);
size_t pcm_get_bytes_waiting(void);
void pcm_play_stop(void);
void pcm_mute(bool mute);
void pcm_play_pause(bool play);
bool pcm_is_paused(void);
bool pcm_is_playing(void);
/** The following are for internal use between pcm.c and target-
specific portion **/
extern unsigned long pcm_curr_sampr;
/* the registered callback function to ask for more mp3 data */
extern volatile pcm_more_callback_type pcm_callback_for_more;
extern volatile bool pcm_playing;
extern volatile bool pcm_paused;
void pcm_play_dma_lock(void);
void pcm_play_dma_unlock(void);
void pcm_play_dma_init(void);
void pcm_play_dma_start(const void *addr, size_t size);
void pcm_play_dma_stop(void);
void pcm_play_dma_pause(bool pause);
void pcm_play_dma_stopped_callback(void);
const void * pcm_play_dma_get_peak_buffer(int *count);
#ifdef HAVE_RECORDING
/** RAW PCM recording routines **/
/* Reenterable locks for locking and unlocking the recording interrupt */
void pcm_rec_lock(void);
void pcm_rec_unlock(void);
/* Initialize pcm recording interface */
void pcm_init_recording(void);
/* Uninitialze pcm recording interface */
void pcm_close_recording(void);
/* Start recording "raw" PCM data */
void pcm_record_data(pcm_more_callback_type2 more_ready,
void *start, size_t size);
/* Stop tranferring data into supplied buffer */
void pcm_stop_recording(void);
/* Continue transferring data in - call during interrupt handler */
void pcm_record_more(void *start, size_t size);
void pcm_calculate_rec_peaks(int *left, int *right);
/** The following are for internal use between pcm.c and target-
specific portion **/
extern volatile const void *pcm_rec_peak_addr;
/* the registered callback function for when more data is available */
extern volatile pcm_more_callback_type2 pcm_callback_more_ready;
/* DMA transfer in is currently active */
extern volatile bool pcm_recording;
/* APIs implemented in the target-specific portion */
void pcm_rec_dma_init(void);
void pcm_rec_dma_close(void);
void pcm_rec_dma_start(void *addr, size_t size);
void pcm_rec_dma_stop(void);
void pcm_rec_dma_stopped_callback(void);
const void * pcm_rec_dma_get_peak_buffer(int *count);
#endif /* HAVE_RECORDING */
#endif /* PCM_PLAYBACK_H */
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