9535a9a639
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8775 a1c6a512-1295-4272-9138-f99709370657
75 lines
3.1 KiB
C
75 lines
3.1 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 by Miika Pekkarinen
|
|
*
|
|
* 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 PCMBUF_H
|
|
#define PCMBUF_H
|
|
|
|
#define PCMBUF_TARGET_CHUNK 32768 /* This is the target fill size of chunks
|
|
on the pcm buffer */
|
|
#define PCMBUF_MINAVG_CHUNK 24576 /* This is the minimum average size of
|
|
chunks on the pcm buffer (or we run out
|
|
of buffer descriptors, which is
|
|
non-fatal) */
|
|
#define PCMBUF_MIN_CHUNK 4096 /* We try to never feed a chunk smaller than
|
|
this to the DMA */
|
|
#define PCMBUF_FADE_CHUNK 8192 /* This is the maximum size of one packet
|
|
for mixing (crossfade or voice) */
|
|
|
|
/* Returns true if the buffer needs to change size */
|
|
bool pcmbuf_is_same_size(size_t bufsize);
|
|
void pcmbuf_init(size_t bufsize);
|
|
/* Size in bytes used by the pcmbuffer */
|
|
size_t pcmbuf_get_bufsize(void);
|
|
size_t get_pcmbuf_descsize(void);
|
|
|
|
void pcmbuf_pause(bool pause);
|
|
void pcmbuf_play_stop(void);
|
|
bool pcmbuf_is_crossfade_active(void);
|
|
|
|
/* These functions are for playing chained buffers of PCM data */
|
|
#if defined(HAVE_ADJUSTABLE_CPU_FREQ) && !defined(SIMULATOR)
|
|
void pcmbuf_boost(bool state);
|
|
void pcmbuf_set_boost_mode(bool state);
|
|
#else
|
|
#define pcmbuf_boost(state) do { } while(0)
|
|
#define pcmbuf_set_boost_mode(state) do { } while(0)
|
|
#endif
|
|
bool pcmbuf_is_lowdata(void);
|
|
void pcmbuf_play_start(void);
|
|
bool pcmbuf_crossfade_init(bool manual_skip);
|
|
void pcmbuf_set_event_handler(void (*callback)(void));
|
|
void pcmbuf_set_position_callback(void (*callback)(size_t size));
|
|
unsigned int pcmbuf_get_latency(void);
|
|
void pcmbuf_set_low_latency(bool state);
|
|
bool pcmbuf_insert_buffer(const char *buf, size_t length);
|
|
void pcmbuf_write_complete(size_t length);
|
|
void* pcmbuf_request_buffer(size_t length, size_t *realsize);
|
|
void* pcmbuf_request_voice_buffer(size_t length, size_t *realsize, bool mix);
|
|
bool pcmbuf_is_crossfade_enabled(void);
|
|
void pcmbuf_crossfade_enable(bool on_off);
|
|
|
|
int pcmbuf_usage(void);
|
|
int pcmbuf_mix_usage(void);
|
|
void pcmbuf_beep(unsigned int frequency, size_t duration, int amplitude);
|
|
void pcmbuf_reset_mixpos(void);
|
|
void pcmbuf_mix(char *buf, size_t length);
|
|
|
|
int pcmbuf_used_descs(void);
|
|
int pcmbuf_descs(void);
|
|
|
|
#endif
|