164 lines
4.5 KiB
C
164 lines
4.5 KiB
C
/*
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* QEMU Audio subsystem header
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*
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* Copyright (c) 2003-2004 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_INT_H
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#define QEMU_AUDIO_INT_H
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#include "vl.h"
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struct pcm_ops;
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typedef struct HWVoice {
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int active;
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int enabled;
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int pending_disable;
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int valid;
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int freq;
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f_sample *clip;
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audfmt_e fmt;
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int nchannels;
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int align;
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int shift;
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int rpos;
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int bufsize;
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int bytes_per_second;
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st_sample_t *mix_buf;
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int samples;
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int64_t old_ticks;
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int nb_voices;
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struct SWVoice **pvoice;
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struct pcm_ops *pcm_ops;
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} HWVoice;
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extern struct pcm_ops no_pcm_ops;
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extern struct audio_output_driver no_output_driver;
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extern struct pcm_ops oss_pcm_ops;
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extern struct audio_output_driver oss_output_driver;
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extern struct pcm_ops sdl_pcm_ops;
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extern struct audio_output_driver sdl_output_driver;
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extern struct pcm_ops wav_pcm_ops;
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extern struct audio_output_driver wav_output_driver;
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extern struct pcm_ops fmod_pcm_ops;
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extern struct audio_output_driver fmod_output_driver;
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struct audio_output_driver {
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const char *name;
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void *(*init) (void);
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void (*fini) (void *);
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struct pcm_ops *pcm_ops;
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int can_be_default;
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int max_voices;
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int voice_size;
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};
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typedef struct AudioState {
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int fixed_format;
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int fixed_freq;
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int fixed_channels;
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int fixed_fmt;
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int nb_hw_voices;
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int64_t ticks_threshold;
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int freq_threshold;
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void *opaque;
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struct audio_output_driver *drv;
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} AudioState;
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extern AudioState audio_state;
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struct SWVoice {
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int freq;
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audfmt_e fmt;
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int nchannels;
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int shift;
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int align;
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t_sample *conv;
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int left;
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int pos;
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int bytes_per_second;
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int64_t ratio;
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st_sample_t *buf;
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void *rate;
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int wpos;
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int live;
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int active;
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int64_t old_ticks;
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HWVoice *hw;
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char *name;
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};
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struct pcm_ops {
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int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt);
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void (*fini) (HWVoice *hw);
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void (*run) (HWVoice *hw);
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int (*write) (SWVoice *sw, void *buf, int size);
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int (*ctl) (HWVoice *hw, int cmd, ...);
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};
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void pcm_sw_free_resources (SWVoice *sw);
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int pcm_sw_alloc_resources (SWVoice *sw);
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void pcm_sw_fini (SWVoice *sw);
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int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq,
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int nchannels, audfmt_e fmt);
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void pcm_hw_clear (HWVoice *hw, void *buf, int len);
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HWVoice * pcm_hw_find_any (HWVoice *hw);
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HWVoice * pcm_hw_find_any_active (HWVoice *hw);
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HWVoice * pcm_hw_find_any_passive (HWVoice *hw);
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HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq,
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int nchannels, audfmt_e fmt);
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HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt);
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int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw);
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int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw);
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SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt);
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void pcm_hw_free_resources (HWVoice *hw);
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int pcm_hw_alloc_resources (HWVoice *hw);
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void pcm_hw_fini (HWVoice *hw);
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void pcm_hw_gc (HWVoice *hw);
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int pcm_hw_get_live (HWVoice *hw);
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int pcm_hw_get_live2 (HWVoice *hw, int *nb_active);
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void pcm_hw_dec_live (HWVoice *hw, int decr);
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int pcm_hw_write (SWVoice *sw, void *buf, int len);
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int audio_get_conf_int (const char *key, int defval);
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const char *audio_get_conf_str (const char *key, const char *defval);
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struct audio_output_driver;
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#define VOICE_ENABLE 1
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#define VOICE_DISABLE 2
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#endif /* audio_int.h */
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