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/*

 * QEMU Audio subsystem header

 *

 * Copyright (c) 2003-2005 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_H

#define QEMU_AUDIO_H

#include "config.h"

#include "sys-queue.h"

typedef void (*audio_callback_fn_t) (void *opaque, int avail);

typedef enum {

    AUD_FMT_U8,

    AUD_FMT_S8,

    AUD_FMT_U16,

    AUD_FMT_S16

} audfmt_e;

#ifdef WORDS_BIGENDIAN

#define AUDIO_HOST_ENDIANNESS 1

#else

#define AUDIO_HOST_ENDIANNESS 0

#endif

typedef struct {

    int freq;

    int nchannels;

    audfmt_e fmt;

    int endianness;

} audsettings_t;

typedef enum {

    AUD_CNOTIFY_ENABLE,

    AUD_CNOTIFY_DISABLE

} audcnotification_e;

struct audio_capture_ops {

    void (*notify) (void *opaque, audcnotification_e cmd);

    void (*capture) (void *opaque, void *buf, int size);

    void (*destroy) (void *opaque);

};

struct capture_ops {

    void (*info) (void *opaque);

    void (*destroy) (void *opaque);

};

typedef struct CaptureState {

    void *opaque;

    struct capture_ops ops;

    LIST_ENTRY (CaptureState) entries;

} CaptureState;

typedef struct AudioState AudioState;

typedef struct SWVoiceOut SWVoiceOut;

typedef struct CaptureVoiceOut CaptureVoiceOut;

typedef struct SWVoiceIn SWVoiceIn;

typedef struct QEMUSoundCard {

    AudioState *audio;

    char *name;

    LIST_ENTRY (QEMUSoundCard) entries;

} QEMUSoundCard;

typedef struct QEMUAudioTimeStamp {

    uint64_t old_ts;

} QEMUAudioTimeStamp;

void AUD_vlog (const char *cap, const char *fmt, va_list ap);

void AUD_log (const char *cap, const char *fmt, ...)

#ifdef __GNUC__

    __attribute__ ((__format__ (__printf__, 2, 3)))

#endif

    ;

AudioState *AUD_init (void);

void AUD_help (void);

void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card);

void AUD_remove_card (QEMUSoundCard *card);

CaptureVoiceOut *AUD_add_capture (

    AudioState *s,

    audsettings_t *as,

    struct audio_capture_ops *ops,

    void *opaque

    );

void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque);

SWVoiceOut *AUD_open_out (

    QEMUSoundCard *card,

    SWVoiceOut *sw,

    const char *name,

    void *callback_opaque,

    audio_callback_fn_t callback_fn,

    audsettings_t *settings

    );

void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw);

int  AUD_write (SWVoiceOut *sw, void *pcm_buf, int size);

int  AUD_get_buffer_size_out (SWVoiceOut *sw);

void AUD_set_active_out (SWVoiceOut *sw, int on);

int  AUD_is_active_out (SWVoiceOut *sw);

void     AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);

uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);

SWVoiceIn *AUD_open_in (

    QEMUSoundCard *card,

    SWVoiceIn *sw,

    const char *name,

    void *callback_opaque,

    audio_callback_fn_t callback_fn,

    audsettings_t *settings

    );

void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw);

int  AUD_read (SWVoiceIn *sw, void *pcm_buf, int size);

void AUD_set_active_in (SWVoiceIn *sw, int on);

int  AUD_is_active_in (SWVoiceIn *sw);

void     AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);

uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);

static inline void *advance (void *p, int incr)

{

    uint8_t *d = p;

    return (d + incr);

}

uint32_t popcount (uint32_t u);

uint32_t lsbindex (uint32_t u);

#ifdef __GNUC__

#define audio_MIN(a, b) ( __extension__ ({      \

    __typeof (a) ta = a;                        \

    __typeof (b) tb = b;                        \

    ((ta)>(tb)?(tb):(ta));                      \

}))

#define audio_MAX(a, b) ( __extension__ ({      \

    __typeof (a) ta = a;                        \

    __typeof (b) tb = b;                        \

    ((ta)<(tb)?(tb):(ta));                      \

}))

#else

#define audio_MIN(a, b) ((a)>(b)?(b):(a))

#define audio_MAX(a, b) ((a)<(b)?(b):(a))

#endif

#endif  /* audio.h */