e8eefe98bf
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23471 a1c6a512-1295-4272-9138-f99709370657
79 lines
3.1 KiB
C
79 lines
3.1 KiB
C
/***************************************************************************
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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 Miika Pekkarinen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 PCMBUF_H
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#define PCMBUF_H
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#define PCMBUF_TARGET_CHUNK 32768 /* This is the target fill size of chunks
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on the pcm buffer */
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#define PCMBUF_MINAVG_CHUNK 24576 /* This is the minimum average size of
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chunks on the pcm buffer (or we run out
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of buffer descriptors, which is
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non-fatal) */
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#define PCMBUF_MIN_CHUNK 4096 /* We try to never feed a chunk smaller than
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this to the DMA */
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#define PCMBUF_MIX_CHUNK 8192 /* This is the maximum size of one packet
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for mixing (crossfade or voice) */
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/* Returns true if the buffer needs to change size */
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bool pcmbuf_is_same_size(void);
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size_t pcmbuf_init(unsigned char *bufend);
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/* Size in bytes used by the pcmbuffer */
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size_t pcmbuf_get_bufsize(void);
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#ifdef ROCKBOX_HAS_LOGF
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/* just used for logging for now */
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unsigned char * pcmbuf_get_meminfo(size_t *length);
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#endif
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void pcmbuf_pause(bool pause);
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void pcmbuf_play_stop(void);
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bool pcmbuf_is_crossfade_active(void);
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/* These functions are for playing chained buffers of PCM data */
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#if defined(HAVE_ADJUSTABLE_CPU_FREQ)
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void pcmbuf_boost(bool state);
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void pcmbuf_set_boost_mode(bool state);
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#else
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#define pcmbuf_boost(state) do { } while(0)
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#define pcmbuf_set_boost_mode(state) do { } while(0)
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#endif
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bool pcmbuf_is_lowdata(void);
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void pcmbuf_play_start(void);
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bool pcmbuf_crossfade_init(bool manual_skip);
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void pcmbuf_set_event_handler(void (*callback)(void));
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void pcmbuf_set_position_callback(void (*callback)(size_t size));
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size_t pcmbuf_free(void);
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unsigned int pcmbuf_get_latency(void);
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void pcmbuf_set_low_latency(bool state);
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void * pcmbuf_request_buffer(int *count);
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void pcmbuf_write_complete(int count);
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void * pcmbuf_request_voice_buffer(int *count);
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void pcmbuf_write_voice_complete(int count);
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bool pcmbuf_is_crossfade_enabled(void);
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void pcmbuf_crossfade_enable(bool on_off);
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void pcmbuf_crossfade_enable_finished(void);
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int pcmbuf_usage(void);
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int pcmbuf_mix_free(void);
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void pcmbuf_beep(unsigned int frequency, size_t duration, int amplitude);
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int pcmbuf_used_descs(void);
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int pcmbuf_descs(void);
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#endif
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