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/*
* QEMU Audio subsystem header
*
* Copyright (c) 2003-2004 Vassili Karpov (malc)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef QEMU_AUDIO_INT_H
#define QEMU_AUDIO_INT_H
#include "vl.h"
struct pcm_ops;
typedef struct HWVoice {
int active;
int enabled;
int pending_disable;
int valid;
int freq;
f_sample *clip;
audfmt_e fmt;
int nchannels;
int align;
int shift;
int rpos;
int bufsize;
int bytes_per_second;
st_sample_t *mix_buf;
int samples;
int64_t old_ticks;
int nb_voices;
struct SWVoice **pvoice;
struct pcm_ops *pcm_ops;
} HWVoice;
extern struct pcm_ops no_pcm_ops;
extern struct audio_output_driver no_output_driver;
extern struct pcm_ops oss_pcm_ops;
extern struct audio_output_driver oss_output_driver;
extern struct pcm_ops sdl_pcm_ops;
extern struct audio_output_driver sdl_output_driver;
extern struct pcm_ops wav_pcm_ops;
extern struct audio_output_driver wav_output_driver;
extern struct pcm_ops fmod_pcm_ops;
extern struct audio_output_driver fmod_output_driver;
struct audio_output_driver {
const char *name;
void *(*init) (void);
void (*fini) (void *);
struct pcm_ops *pcm_ops;
int can_be_default;
int max_voices;
int voice_size;
};
typedef struct AudioState {
int fixed_format;
int fixed_freq;
int fixed_channels;
int fixed_fmt;
int nb_hw_voices;
int64_t ticks_threshold;
int freq_threshold;
void *opaque;
struct audio_output_driver *drv;
} AudioState;
extern AudioState audio_state;
struct SWVoice {
int freq;
audfmt_e fmt;
int nchannels;
int shift;
int align;
t_sample *conv;
int left;
int pos;
int bytes_per_second;
int64_t ratio;
st_sample_t *buf;
void *rate;
int wpos;
int live;
int active;
int64_t old_ticks;
HWVoice *hw;
char *name;
};
struct pcm_ops {
int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt);
void (*fini) (HWVoice *hw);
void (*run) (HWVoice *hw);
int (*write) (SWVoice *sw, void *buf, int size);
int (*ctl) (HWVoice *hw, int cmd, ...);
};
void pcm_sw_free_resources (SWVoice *sw);
int pcm_sw_alloc_resources (SWVoice *sw);
void pcm_sw_fini (SWVoice *sw);
int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq,
int nchannels, audfmt_e fmt);
void pcm_hw_clear (HWVoice *hw, void *buf, int len);
HWVoice * pcm_hw_find_any (HWVoice *hw);
HWVoice * pcm_hw_find_any_active (HWVoice *hw);
HWVoice * pcm_hw_find_any_passive (HWVoice *hw);
HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq,
int nchannels, audfmt_e fmt);
HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt);
int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw);
int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw);
SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt);
void pcm_hw_free_resources (HWVoice *hw);
int pcm_hw_alloc_resources (HWVoice *hw);
void pcm_hw_fini (HWVoice *hw);
void pcm_hw_gc (HWVoice *hw);
int pcm_hw_get_live (HWVoice *hw);
int pcm_hw_get_live2 (HWVoice *hw, int *nb_active);
void pcm_hw_dec_live (HWVoice *hw, int decr);
int pcm_hw_write (SWVoice *sw, void *buf, int len);
int audio_get_conf_int (const char *key, int defval);
const char *audio_get_conf_str (const char *key, const char *defval);
struct audio_output_driver;
#define VOICE_ENABLE 1
#define VOICE_DISABLE 2
#endif /* audio_int.h */
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