Archipelago » qemu

/*

 * 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_INT_H

#define QEMU_AUDIO_INT_H

#include "sys-queue.h"

#ifdef CONFIG_COREAUDIO

#define FLOAT_MIXENG

/* #define RECIPROCAL */

#endif

#include "mixeng.h"

int audio_bug (const char *funcname, int cond);

struct audio_pcm_ops;

typedef enum {

    AUD_OPT_INT,

    AUD_OPT_FMT,

    AUD_OPT_STR,

    AUD_OPT_BOOL

} audio_option_tag_e;

struct audio_option {

    const char *name;

    audio_option_tag_e tag;

    void *valp;

    const char *descr;

    int *overridenp;

    int overriden;

};

struct audio_callback {

    void *opaque;

    audio_callback_fn_t fn;

};

struct audio_pcm_info {

    int bits;

    int sign;

    int freq;

    int nchannels;

    int align;

    int shift;

    int bytes_per_second;

    int swap_endian;

};

typedef struct HWVoiceOut {

    int active;

    int enabled;

    int pending_disable;

    int valid;

    struct audio_pcm_info info;

    f_sample *clip;

    int rpos;

    int bufsize;

    uint64_t ts_helper;

    st_sample_t *mix_buf;

    int samples;

    LIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;

    struct audio_pcm_ops *pcm_ops;

    LIST_ENTRY (HWVoiceOut) entries;

} HWVoiceOut;

typedef struct HWVoiceIn {

    int enabled;

    int active;

    struct audio_pcm_info info;

    t_sample *conv;

    int wpos;

    int bufsize;

    int total_samples_captured;

    uint64_t ts_helper;

    st_sample_t *conv_buf;

    int samples;

    LIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;

    struct audio_pcm_ops *pcm_ops;

    LIST_ENTRY (HWVoiceIn) entries;

} HWVoiceIn;

extern struct audio_driver no_audio_driver;

extern struct audio_driver oss_audio_driver;

extern struct audio_driver sdl_audio_driver;

extern struct audio_driver wav_audio_driver;

extern struct audio_driver fmod_audio_driver;

extern struct audio_driver alsa_audio_driver;

extern struct audio_driver coreaudio_audio_driver;

extern struct audio_driver dsound_audio_driver;

extern volume_t nominal_volume;

struct audio_driver {

    const char *name;

    const char *descr;

    struct audio_option *options;

    void *(*init) (void);

    void (*fini) (void *);

    struct audio_pcm_ops *pcm_ops;

    int can_be_default;

    int max_voices_out;

    int max_voices_in;

    int voice_size_out;

    int voice_size_in;

};

typedef struct AudioState {

    int fixed_settings_out;

    int fixed_freq_out;

    int fixed_channels_out;

    int fixed_fmt_out;

    int nb_hw_voices_out;

    int greedy_out;

    int fixed_settings_in;

    int fixed_freq_in;

    int fixed_channels_in;

    int fixed_fmt_in;

    int nb_hw_voices_in;

    int greedy_in;

    void *opaque;

    struct audio_driver *drv;

    QEMUTimer *ts;

    union {

        int usec;

        int64_t ticks;

    } period;

    int plive;

} AudioState;

extern AudioState audio_state;

struct SWVoiceOut {

    struct audio_pcm_info info;

    t_sample *conv;

    int64_t ratio;

    st_sample_t *buf;

    void *rate;

    int total_hw_samples_mixed;

    int active;

    int empty;

    HWVoiceOut *hw;

    char *name;

    volume_t vol;

    struct audio_callback callback;

    LIST_ENTRY (SWVoiceOut) entries;

};

struct SWVoiceIn {

    int active;

    struct audio_pcm_info info;

    int64_t ratio;

    void *rate;

    int total_hw_samples_acquired;

    st_sample_t *conv_buf;

    f_sample *clip;

    HWVoiceIn *hw;

    char *name;

    volume_t vol;

    struct audio_callback callback;

    LIST_ENTRY (SWVoiceIn) entries;

};

struct audio_pcm_ops {

    int  (*init_out)(HWVoiceOut *hw, int freq, int nchannels, audfmt_e fmt);

    void (*fini_out)(HWVoiceOut *hw);

    int  (*run_out) (HWVoiceOut *hw);

    int  (*write)   (SWVoiceOut *sw, void *buf, int size);

    int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);

    int  (*init_in) (HWVoiceIn *hw, int freq, int nchannels, audfmt_e fmt);

    void (*fini_in) (HWVoiceIn *hw);

    int  (*run_in)  (HWVoiceIn *hw);

    int  (*read)    (SWVoiceIn *sw, void *buf, int size);

    int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);

};

void audio_pcm_init_info (struct audio_pcm_info *info, int freq,

                          int nchannels, audfmt_e fmt, int swap_endian);

void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);

int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);

int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);

int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);

int  audio_pcm_hw_get_live_out (HWVoiceOut *hw);

int  audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);

#define VOICE_ENABLE 1

#define VOICE_DISABLE 2

static inline int audio_ring_dist (int dst, int src, int len)

{

    return (dst >= src) ? (dst - src) : (len - src + dst);

}

static inline int audio_need_to_swap_endian (int endianness)

{

#ifdef WORDS_BIGENDIAN

    return endianness != 1;

#else

    return endianness != 0;

#endif

}

#if defined __GNUC__

#define GCC_ATTR __attribute__ ((__unused__, __format__ (__printf__, 1, 2)))

#define INIT_FIELD(f) . f

#define GCC_FMT_ATTR(n, m) __attribute__ ((__format__ (printf, n, m)))

#else

#define GCC_ATTR /**/

#define INIT_FIELD(f) /**/

#define GCC_FMT_ATTR(n, m)

#endif

static void GCC_ATTR dolog (const char *fmt, ...)

{

    va_list ap;

    va_start (ap, fmt);

    AUD_vlog (AUDIO_CAP, fmt, ap);

    va_end (ap);

}

#ifdef DEBUG

static void GCC_ATTR ldebug (const char *fmt, ...)

{

    va_list ap;

    va_start (ap, fmt);

    AUD_vlog (AUDIO_CAP, fmt, ap);

    va_end (ap);

}

#else

#if defined NDEBUG && defined __GNUC__

#define ldebug(...)

#elif defined NDEBUG && defined _MSC_VER

#define ldebug __noop

#else

static void GCC_ATTR ldebug (const char *fmt, ...)

{

    (void) fmt;

}

#endif

#endif

#undef GCC_ATTR

#define AUDIO_STRINGIFY_(n) #n

#define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)

#if defined _MSC_VER || defined __GNUC__

#define AUDIO_FUNC __FUNCTION__

#else

#define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)

#endif

#endif /* audio_int.h */