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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 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;

    int voice_size;

    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 */