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/*
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* QEMU Audio subsystem header
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*
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* Copyright (c) 2003-2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_AUDIO_H
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#define QEMU_AUDIO_H
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#include "config.h" |
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#include "sys-queue.h" |
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typedef void (*audio_callback_fn_t) (void *opaque, int avail); |
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typedef enum { |
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AUD_FMT_U8, |
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AUD_FMT_S8, |
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AUD_FMT_U16, |
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AUD_FMT_S16 |
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} audfmt_e; |
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#ifdef WORDS_BIGENDIAN
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#define AUDIO_HOST_ENDIANNESS 1 |
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#else
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#define AUDIO_HOST_ENDIANNESS 0 |
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#endif
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typedef struct { |
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int freq;
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int nchannels;
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audfmt_e fmt; |
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int endianness;
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} audsettings_t; |
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struct audio_capture_ops {
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void (*state) (void *opaque, int enabled); |
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void (*capture) (void *opaque, void *buf, int size); |
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}; |
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typedef struct AudioState AudioState; |
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typedef struct SWVoiceOut SWVoiceOut; |
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typedef struct SWVoiceIn SWVoiceIn; |
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typedef struct QEMUSoundCard { |
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AudioState *audio; |
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char *name;
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LIST_ENTRY (QEMUSoundCard) entries; |
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} QEMUSoundCard; |
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typedef struct QEMUAudioTimeStamp { |
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uint64_t old_ts; |
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} QEMUAudioTimeStamp; |
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void AUD_vlog (const char *cap, const char *fmt, va_list ap); |
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void AUD_log (const char *cap, const char *fmt, ...) |
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#ifdef __GNUC__
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__attribute__ ((__format__ (__printf__, 2, 3))) |
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#endif
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; |
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AudioState *AUD_init (void);
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void AUD_help (void); |
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void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card); |
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void AUD_remove_card (QEMUSoundCard *card);
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int AUD_add_capture (
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AudioState *s, |
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audsettings_t *as, |
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struct audio_capture_ops *ops,
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void *opaque
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); |
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SWVoiceOut *AUD_open_out ( |
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QEMUSoundCard *card, |
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SWVoiceOut *sw, |
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const char *name, |
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void *callback_opaque,
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audio_callback_fn_t callback_fn, |
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audsettings_t *settings |
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); |
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void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw);
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int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size); |
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int AUD_get_buffer_size_out (SWVoiceOut *sw);
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void AUD_set_active_out (SWVoiceOut *sw, int on); |
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int AUD_is_active_out (SWVoiceOut *sw);
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void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
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uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); |
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SWVoiceIn *AUD_open_in ( |
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QEMUSoundCard *card, |
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SWVoiceIn *sw, |
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const char *name, |
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void *callback_opaque,
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audio_callback_fn_t callback_fn, |
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audsettings_t *settings |
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); |
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void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw);
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int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size); |
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void AUD_set_active_in (SWVoiceIn *sw, int on); |
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int AUD_is_active_in (SWVoiceIn *sw);
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void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
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uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); |
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static inline void *advance (void *p, int incr) |
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{ |
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uint8_t *d = p; |
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return (d + incr);
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} |
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uint32_t popcount (uint32_t u); |
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uint32_t lsbindex (uint32_t u); |
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#ifdef __GNUC__
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#define audio_MIN(a, b) ( __extension__ ({ \
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__typeof (a) ta = a; \ |
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__typeof (b) tb = b; \ |
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((ta)>(tb)?(tb):(ta)); \ |
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})) |
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#define audio_MAX(a, b) ( __extension__ ({ \
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__typeof (a) ta = a; \ |
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__typeof (b) tb = b; \ |
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((ta)<(tb)?(tb):(ta)); \ |
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})) |
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#else
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#define audio_MIN(a, b) ((a)>(b)?(b):(a))
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#define audio_MAX(a, b) ((a)<(b)?(b):(a))
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#endif
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#endif /* audio.h */ |