LXR qemu/audio/audio

   1/*
   2 * QEMU Audio subsystem header
   3 *
   4 * Copyright (c) 2003-2005 Vassili Karpov (malc)
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#ifndef QEMU_AUDIO_INT_H
  26#define QEMU_AUDIO_INT_H
  27
  28#ifdef CONFIG_AUDIO_COREAUDIO
  29#define FLOAT_MIXENG
  30/* #define RECIPROCAL */
  31#endif
  32#include "mixeng.h"
  33
  34struct audio_pcm_ops;
  35
  36typedef enum {
  37    AUD_OPT_INT,
  38    AUD_OPT_FMT,
  39    AUD_OPT_STR,
  40    AUD_OPT_BOOL
  41} audio_option_tag_e;
  42
  43struct audio_option {
  44    const char *name;
  45    audio_option_tag_e tag;
  46    void *valp;
  47    const char *descr;
  48    int *overriddenp;
  49    int overridden;
  50};
  51
  52struct audio_callback {
  53    void *opaque;
  54    audio_callback_fn fn;
  55};
  56
  57struct audio_pcm_info {
  58    int bits;
  59    int sign;
  60    int freq;
  61    int nchannels;
  62    int align;
  63    int shift;
  64    int bytes_per_second;
  65    int swap_endianness;
  66};
  67
  68typedef struct SWVoiceCap SWVoiceCap;
  69
  70typedef struct HWVoiceOut {
  71    int enabled;
  72    int poll_mode;
  73    int pending_disable;
  74    struct audio_pcm_info info;
  75
  76    f_sample *clip;
  77
  78    int rpos;
  79    uint64_t ts_helper;
  80
  81    struct st_sample *mix_buf;
  82
  83    int samples;
  84    QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
  85    QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
  86    int ctl_caps;
  87    struct audio_pcm_ops *pcm_ops;
  88    QLIST_ENTRY (HWVoiceOut) entries;
  89} HWVoiceOut;
  90
  91typedef struct HWVoiceIn {
  92    int enabled;
  93    int poll_mode;
  94    struct audio_pcm_info info;
  95
  96    t_sample *conv;
  97
  98    int wpos;
  99    int total_samples_captured;
 100    uint64_t ts_helper;
 101
 102    struct st_sample *conv_buf;
 103
 104    int samples;
 105    QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
 106    int ctl_caps;
 107    struct audio_pcm_ops *pcm_ops;
 108    QLIST_ENTRY (HWVoiceIn) entries;
 109} HWVoiceIn;
 110
 111struct SWVoiceOut {
 112    QEMUSoundCard *card;
 113    struct audio_pcm_info info;
 114    t_sample *conv;
 115    int64_t ratio;
 116    struct st_sample *buf;
 117    void *rate;
 118    int total_hw_samples_mixed;
 119    int active;
 120    int empty;
 121    HWVoiceOut *hw;
 122    char *name;
 123    struct mixeng_volume vol;
 124    struct audio_callback callback;
 125    QLIST_ENTRY (SWVoiceOut) entries;
 126};
 127
 128struct SWVoiceIn {
 129    QEMUSoundCard *card;
 130    int active;
 131    struct audio_pcm_info info;
 132    int64_t ratio;
 133    void *rate;
 134    int total_hw_samples_acquired;
 135    struct st_sample *buf;
 136    f_sample *clip;
 137    HWVoiceIn *hw;
 138    char *name;
 139    struct mixeng_volume vol;
 140    struct audio_callback callback;
 141    QLIST_ENTRY (SWVoiceIn) entries;
 142};
 143
 144typedef struct audio_driver audio_driver;
 145struct audio_driver {
 146    const char *name;
 147    const char *descr;
 148    struct audio_option *options;
 149    void *(*init) (void);
 150    void (*fini) (void *);
 151    struct audio_pcm_ops *pcm_ops;
 152    int can_be_default;
 153    int max_voices_out;
 154    int max_voices_in;
 155    int voice_size_out;
 156    int voice_size_in;
 157    int ctl_caps;
 158    QLIST_ENTRY(audio_driver) next;
 159};
 160
 161struct audio_pcm_ops {
 162    int  (*init_out)(HWVoiceOut *hw, struct audsettings *as, void *drv_opaque);
 163    void (*fini_out)(HWVoiceOut *hw);
 164    int  (*run_out) (HWVoiceOut *hw, int live);
 165    int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 166    int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 167
 168    int  (*init_in) (HWVoiceIn *hw, struct audsettings *as, void *drv_opaque);
 169    void (*fini_in) (HWVoiceIn *hw);
 170    int  (*run_in)  (HWVoiceIn *hw);
 171    int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 172    int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 173};
 174
 175struct capture_callback {
 176    struct audio_capture_ops ops;
 177    void *opaque;
 178    QLIST_ENTRY (capture_callback) entries;
 179};
 180
 181struct CaptureVoiceOut {
 182    HWVoiceOut hw;
 183    void *buf;
 184    QLIST_HEAD (cb_listhead, capture_callback) cb_head;
 185    QLIST_ENTRY (CaptureVoiceOut) entries;
 186};
 187
 188struct SWVoiceCap {
 189    SWVoiceOut sw;
 190    CaptureVoiceOut *cap;
 191    QLIST_ENTRY (SWVoiceCap) entries;
 192};
 193
 194struct AudioState {
 195    struct audio_driver *drv;
 196    void *drv_opaque;
 197
 198    QEMUTimer *ts;
 199    QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 200    QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 201    QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 202    QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 203    int nb_hw_voices_out;
 204    int nb_hw_voices_in;
 205    int vm_running;
 206};
 207
 208extern const struct mixeng_volume nominal_volume;
 209
 210void audio_driver_register(audio_driver *drv);
 211audio_driver *audio_driver_lookup(const char *name);
 212
 213void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 214void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 215
 216int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 217int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 218
 219int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 220
 221int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 222                           int live, int pending);
 223
 224int audio_bug (const char *funcname, int cond);
 225void *audio_calloc (const char *funcname, int nmemb, size_t size);
 226
 227void audio_run (const char *msg);
 228
 229#define VOICE_ENABLE 1
 230#define VOICE_DISABLE 2
 231#define VOICE_VOLUME 3
 232
 233#define VOICE_VOLUME_CAP (1 << VOICE_VOLUME)
 234
 235static inline int audio_ring_dist (int dst, int src, int len)
 236{
 237    return (dst >= src) ? (dst - src) : (len - src + dst);
 238}
 239
 240#define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 241
 242#ifdef DEBUG
 243#define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 244#else
 245#define ldebug(fmt, ...) (void)0
 246#endif
 247
 248#define AUDIO_STRINGIFY_(n) #n
 249#define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 250
 251#endif /* QEMU_AUDIO_INT_H */
 252