audio/audio_int.h

   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
  34 struct audio_pcm_ops;
  35
  36 typedef enum {
  37     AUD_OPT_INT,
  38     AUD_OPT_FMT,
  39     AUD_OPT_STR,
  40     AUD_OPT_BOOL
  41 } audio_option_tag_e;
  42
  43 struct 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
  52 struct audio_callback {
  53     void *opaque;
  54     audio_callback_fn fn;
  55 };
  56
  57 struct 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
  68 typedef struct SWVoiceCap SWVoiceCap;
  69
  70 typedef 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
  91 typedef 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
 111 struct 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
 128 struct 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
 144 typedef struct audio_driver audio_driver;
 145 struct 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
 161 struct 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
 175 struct capture_callback {
 176     struct audio_capture_ops ops;
 177     void *opaque;
 178     QLIST_ENTRY (capture_callback) entries;
 179 };
 180
 181 struct CaptureVoiceOut {
 182     HWVoiceOut hw;
 183     void *buf;
 184     QLIST_HEAD (cb_listhead, capture_callback) cb_head;
 185     QLIST_ENTRY (CaptureVoiceOut) entries;
 186 };
 187
 188 struct SWVoiceCap {
 189     SWVoiceOut sw;
 190     CaptureVoiceOut *cap;
 191     QLIST_ENTRY (SWVoiceCap) entries;
 192 };
 193
 194 typedef struct 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 } AudioState;
 207
 208 extern const struct mixeng_volume nominal_volume;
 209
 210 void audio_driver_register(audio_driver *drv);
 211 audio_driver *audio_driver_lookup(const char *name);
 212
 213 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 214 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 215
 216 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 217 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 218
 219 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 220
 221 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 222                            int live, int pending);
 223
 224 int audio_bug (const char *funcname, int cond);
 225 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 226
 227 void 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
 235 static 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 */