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