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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
/* Guard buffer for crossfader when dsp is enabled. */
#define PCMBUF_GUARD 32768
/* PCM audio buffer. */
#define PCMBUF_SIZE (1*1024*1024)
void pcm_init(void);
void pcm_set_frequency(unsigned int frequency);
/* This is for playing "raw" PCM data */
void pcm_play_data(const unsigned char* start, int size,
void (*get_more)(unsigned char** start, long* size));
void pcm_play_stop(void);
void pcm_play_pause(bool play);
bool pcm_is_playing(void);
bool pcm_is_crossfade_active(void);
/* These functions are for playing chained buffers of PCM data */
void pcm_play_init(void);
void pcm_play_start(void);
bool pcm_play_add_chunk(void *addr, int size, void (*callback)(void));
int pcm_play_num_used_buffers(void);
void pcm_play_set_watermark(int numbytes, void (*callback)(int bytes_left));
void pcm_set_boost_mode(bool state);
bool pcm_is_lowdata(void);
void pcm_flush_audio(void);
bool pcm_crossfade_init(void);
void audiobuffer_add_event(void (*event_handler)(void));
unsigned int audiobuffer_get_latency(void);
bool pcm_insert_buffer(char *buf, long length);
void pcm_flush_buffer(long length);
void* pcm_request_buffer(long length, long *realsize);
bool pcm_is_crossfade_enabled(void);
void pcm_crossfade_enable(bool on_off);
#endif
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