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      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 #ifndef QEMU_AUDIO_INT_H
     25 #define QEMU_AUDIO_INT_H
     26 
     27 #include "audio/audio.h"
     28 
     29 #ifdef CONFIG_COREAUDIO
     30 #define FLOAT_MIXENG
     31 /* #define RECIPROCAL */
     32 #endif
     33 #include "mixeng.h"
     34 
     35 struct audio_pcm_ops;
     36 
     37 typedef enum {
     38     AUD_OPT_INT,
     39     AUD_OPT_FMT,
     40     AUD_OPT_STR,
     41     AUD_OPT_BOOL
     42 } audio_option_tag_e;
     43 
     44 struct audio_option {
     45     const char *name;
     46     audio_option_tag_e tag;
     47     void *valp;
     48     const char *descr;
     49     int *overriddenp;
     50     int overridden;
     51 };
     52 
     53 struct audio_callback {
     54     void *opaque;
     55     audio_callback_fn fn;
     56 };
     57 
     58 struct audio_pcm_info {
     59     int bits;
     60     int sign;
     61     int freq;
     62     int nchannels;
     63     int align;
     64     int shift;
     65     int bytes_per_second;
     66     int swap_endianness;
     67 };
     68 
     69 typedef struct SWVoiceCap SWVoiceCap;
     70 
     71 typedef struct HWVoiceOut {
     72     int enabled;
     73     int poll_mode;
     74     int pending_disable;
     75     struct audio_pcm_info info;
     76 
     77     f_sample *clip;
     78 
     79     int rpos;
     80     uint64_t ts_helper;
     81 
     82     struct st_sample *mix_buf;
     83 
     84     int samples;
     85     QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
     86     QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
     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     struct audio_pcm_ops *pcm_ops;
    107     QLIST_ENTRY (HWVoiceIn) entries;
    108 } HWVoiceIn;
    109 
    110 struct SWVoiceOut {
    111     QEMUSoundCard *card;
    112     struct audio_pcm_info info;
    113     t_sample *conv;
    114     int64_t ratio;
    115     struct st_sample *buf;
    116     void *rate;
    117     int total_hw_samples_mixed;
    118     int active;
    119     int empty;
    120     HWVoiceOut *hw;
    121     char *name;
    122     struct mixeng_volume vol;
    123     struct audio_callback callback;
    124     QLIST_ENTRY (SWVoiceOut) entries;
    125 };
    126 
    127 struct SWVoiceIn {
    128     QEMUSoundCard *card;
    129     int active;
    130     struct audio_pcm_info info;
    131     int64_t ratio;
    132     void *rate;
    133     int total_hw_samples_acquired;
    134     struct st_sample *buf;
    135     f_sample *clip;
    136     HWVoiceIn *hw;
    137     char *name;
    138     struct mixeng_volume vol;
    139     struct audio_callback callback;
    140     QLIST_ENTRY (SWVoiceIn) entries;
    141 };
    142 
    143 struct audio_driver {
    144     const char *name;
    145     const char *descr;
    146     struct audio_option *options;
    147     void *(*init) (void);
    148     void (*fini) (void *);
    149     struct audio_pcm_ops *pcm_ops;
    150     int can_be_default;
    151     int max_voices_out;
    152     int max_voices_in;
    153     int voice_size_out;
    154     int voice_size_in;
    155 };
    156 
    157 struct audio_pcm_ops {
    158     int  (*init_out)(HWVoiceOut *hw, struct audsettings *as);
    159     void (*fini_out)(HWVoiceOut *hw);
    160     int  (*run_out) (HWVoiceOut *hw, int live);
    161     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
    162     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
    163 
    164     int  (*init_in) (HWVoiceIn *hw, struct audsettings *as);
    165     void (*fini_in) (HWVoiceIn *hw);
    166     int  (*run_in)  (HWVoiceIn *hw);
    167     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
    168     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
    169 };
    170 
    171 struct capture_callback {
    172     struct audio_capture_ops ops;
    173     void *opaque;
    174     QLIST_ENTRY (capture_callback) entries;
    175 };
    176 
    177 struct CaptureVoiceOut {
    178     HWVoiceOut hw;
    179     void *buf;
    180     QLIST_HEAD (cb_listhead, capture_callback) cb_head;
    181     QLIST_ENTRY (CaptureVoiceOut) entries;
    182 };
    183 
    184 struct SWVoiceCap {
    185     SWVoiceOut sw;
    186     CaptureVoiceOut *cap;
    187     QLIST_ENTRY (SWVoiceCap) entries;
    188 };
    189 
    190 struct AudioState {
    191     struct audio_driver *drv;
    192     void *drv_opaque;
    193 
    194     QEMUTimer *ts;
    195     QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
    196     QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
    197     QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
    198     QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
    199     int nb_hw_voices_out;
    200     int nb_hw_voices_in;
    201     int vm_running;
    202 };
    203 
    204 extern struct audio_driver no_audio_driver;
    205 extern struct audio_driver oss_audio_driver;
    206 extern struct audio_driver sdl_audio_driver;
    207 extern struct audio_driver win_audio_driver;
    208 extern struct audio_driver wav_audio_driver;
    209 extern struct audio_driver fmod_audio_driver;
    210 extern struct audio_driver alsa_audio_driver;
    211 extern struct audio_driver coreaudio_audio_driver;
    212 extern struct audio_driver dsound_audio_driver;
    213 extern struct audio_driver esd_audio_driver;
    214 extern struct audio_driver pa_audio_driver;
    215 extern struct audio_driver winwave_audio_driver;
    216 extern struct mixeng_volume nominal_volume;
    217 
    218 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
    219 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
    220 
    221 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
    222 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
    223 
    224 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
    225 
    226 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
    227                            int live, int pending);
    228 
    229 int audio_bug (const char *funcname, int cond);
    230 void *audio_calloc (const char *funcname, int nmemb, size_t size);
    231 
    232 void audio_run (const char *msg);
    233 
    234 #define VOICE_ENABLE 1
    235 #define VOICE_DISABLE 2
    236 
    237 static inline int audio_ring_dist (int dst, int src, int len)
    238 {
    239     return (dst >= src) ? (dst - src) : (len - src + dst);
    240 }
    241 
    242 #if defined __GNUC__
    243 #define INIT_FIELD(f) . f
    244 #else
    245 #define INIT_FIELD(f) /**/
    246 #endif
    247 
    248 #define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
    249 
    250 #ifdef DEBUG
    251 #define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
    252 #else
    253 #define ldebug(fmt, ...) (void)0
    254 #endif
    255 
    256 #define AUDIO_STRINGIFY_(n) #n
    257 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
    258 
    259 #if defined _MSC_VER || defined __GNUC__
    260 #define AUDIO_FUNC __FUNCTION__
    261 #else
    262 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
    263 #endif
    264 
    265 #endif /* audio_int.h */
    266