audio/dsound_template.h

   1 /*
   2  * QEMU DirectSound audio driver header
   3  *
   4  * Copyright (c) 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 #ifdef DSBTYPE_IN
  25 #define NAME "capture buffer"
  26 #define TYPE in
  27 #define IFACE IDirectSoundCaptureBuffer
  28 #define BUFPTR LPDIRECTSOUNDCAPTUREBUFFER
  29 #define FIELD dsound_capture_buffer
  30 #else
  31 #define NAME "playback buffer"
  32 #define TYPE out
  33 #define IFACE IDirectSoundBuffer
  34 #define BUFPTR LPDIRECTSOUNDBUFFER
  35 #define FIELD dsound_buffer
  36 #endif
  37
  38 static int glue (dsound_unlock_, TYPE) (
  39     BUFPTR buf,
  40     LPVOID p1,
  41     LPVOID p2,
  42     DWORD blen1,
  43     DWORD blen2
  44     )
  45 {
  46     HRESULT hr;
  47
  48     hr = glue (IFACE, _Unlock) (buf, p1, blen1, p2, blen2);
  49     if (FAILED (hr)) {
  50         dsound_logerr (hr, "Could not unlock " NAME "\n");
  51         return -1;
  52     }
  53
  54     return 0;
  55 }
  56
  57 static int glue (dsound_lock_, TYPE) (
  58     BUFPTR buf,
  59     struct audio_pcm_info *info,
  60     DWORD pos,
  61     DWORD len,
  62     LPVOID *p1p,
  63     LPVOID *p2p,
  64     DWORD *blen1p,
  65     DWORD *blen2p,
  66     int entire
  67     )
  68 {
  69     HRESULT hr;
  70     int i;
  71     LPVOID p1 = NULL, p2 = NULL;
  72     DWORD blen1 = 0, blen2 = 0;
  73     DWORD flag;
  74
  75 #ifdef DSBTYPE_IN
  76     flag = entire ? DSCBLOCK_ENTIREBUFFER : 0;
  77 #else
  78     flag = entire ? DSBLOCK_ENTIREBUFFER : 0;
  79 #endif
  80     for (i = 0; i < conf.lock_retries; ++i) {
  81         hr = glue (IFACE, _Lock) (
  82             buf,
  83             pos,
  84             len,
  85             &p1,
  86             &blen1,
  87             &p2,
  88             &blen2,
  89             flag
  90             );
  91
  92         if (FAILED (hr)) {
  93 #ifndef DSBTYPE_IN
  94             if (hr == DSERR_BUFFERLOST) {
  95                 if (glue (dsound_restore_, TYPE) (buf)) {
  96                     dsound_logerr (hr, "Could not lock " NAME "\n");
  97                     goto fail;
  98                 }
  99                 continue;
 100             }
 101 #endif
 102             dsound_logerr (hr, "Could not lock " NAME "\n");
 103             goto fail;
 104         }
 105
 106         break;
 107     }
 108
 109     if (i == conf.lock_retries) {
 110         dolog ("%d attempts to lock " NAME " failed\n", i);
 111         goto fail;
 112     }
 113
 114     if ((p1 && (blen1 & info->align)) || (p2 && (blen2 & info->align))) {
 115         dolog ("DirectSound returned misaligned buffer %ld %ld\n",
 116                blen1, blen2);
 117         glue (dsound_unlock_, TYPE) (buf, p1, p2, blen1, blen2);
 118         goto fail;
 119     }
 120
 121     if (!p1 && blen1) {
 122         dolog ("warning: !p1 && blen1=%ld\n", blen1);
 123         blen1 = 0;
 124     }
 125
 126     if (!p2 && blen2) {
 127         dolog ("warning: !p2 && blen2=%ld\n", blen2);
 128         blen2 = 0;
 129     }
 130
 131     *p1p = p1;
 132     *p2p = p2;
 133     *blen1p = blen1;
 134     *blen2p = blen2;
 135     return 0;
 136
 137  fail:
 138     *p1p = NULL - 1;
 139     *p2p = NULL - 1;
 140     *blen1p = -1;
 141     *blen2p = -1;
 142     return -1;
 143 }
 144
 145 #ifdef DSBTYPE_IN
 146 static void dsound_fini_in (HWVoiceIn *hw)
 147 #else
 148 static void dsound_fini_out (HWVoiceOut *hw)
 149 #endif
 150 {
 151     HRESULT hr;
 152 #ifdef DSBTYPE_IN
 153     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 154 #else
 155     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 156 #endif
 157
 158     if (ds->FIELD) {
 159         hr = glue (IFACE, _Stop) (ds->FIELD);
 160         if (FAILED (hr)) {
 161             dsound_logerr (hr, "Could not stop " NAME "\n");
 162         }
 163
 164         hr = glue (IFACE, _Release) (ds->FIELD);
 165         if (FAILED (hr)) {
 166             dsound_logerr (hr, "Could not release " NAME "\n");
 167         }
 168         ds->FIELD = NULL;
 169     }
 170 }
 171
 172 #ifdef DSBTYPE_IN
 173 static int dsound_init_in (HWVoiceIn *hw, audsettings_t *as)
 174 #else
 175 static int dsound_init_out (HWVoiceOut *hw, audsettings_t *as)
 176 #endif
 177 {
 178     int err;
 179     HRESULT hr;
 180     dsound *s = &glob_dsound;
 181     WAVEFORMATEX wfx;
 182     audsettings_t obt_as;
 183 #ifdef DSBTYPE_IN
 184     const char *typ = "ADC";
 185     DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
 186     DSCBUFFERDESC bd;
 187     DSCBCAPS bc;
 188 #else
 189     const char *typ = "DAC";
 190     DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
 191     DSBUFFERDESC bd;
 192     DSBCAPS bc;
 193 #endif
 194
 195     err = waveformat_from_audio_settings (&wfx, as);
 196     if (err) {
 197         return -1;
 198     }
 199
 200     memset (&bd, 0, sizeof (bd));
 201     bd.dwSize = sizeof (bd);
 202     bd.lpwfxFormat = &wfx;
 203 #ifdef DSBTYPE_IN
 204     bd.dwBufferBytes = conf.bufsize_in;
 205     hr = IDirectSoundCapture_CreateCaptureBuffer (
 206         s->dsound_capture,
 207         &bd,
 208         &ds->dsound_capture_buffer,
 209         NULL
 210         );
 211 #else
 212     bd.dwFlags = DSBCAPS_STICKYFOCUS | DSBCAPS_GETCURRENTPOSITION2;
 213     bd.dwBufferBytes = conf.bufsize_out;
 214     hr = IDirectSound_CreateSoundBuffer (
 215         s->dsound,
 216         &bd,
 217         &ds->dsound_buffer,
 218         NULL
 219         );
 220 #endif
 221
 222     if (FAILED (hr)) {
 223         dsound_logerr2 (hr, typ, "Could not create " NAME "\n");
 224         return -1;
 225     }
 226
 227     hr = glue (IFACE, _GetFormat) (ds->FIELD, &wfx, sizeof (wfx), NULL);
 228     if (FAILED (hr)) {
 229         dsound_logerr2 (hr, typ, "Could not get " NAME " format\n");
 230         goto fail0;
 231     }
 232
 233 #ifdef DEBUG_DSOUND
 234     dolog (NAME "\n");
 235     print_wave_format (&wfx);
 236 #endif
 237
 238     memset (&bc, 0, sizeof (bc));
 239     bc.dwSize = sizeof (bc);
 240
 241     hr = glue (IFACE, _GetCaps) (ds->FIELD, &bc);
 242     if (FAILED (hr)) {
 243         dsound_logerr2 (hr, typ, "Could not get " NAME " format\n");
 244         goto fail0;
 245     }
 246
 247     err = waveformat_to_audio_settings (&wfx, &obt_as);
 248     if (err) {
 249         goto fail0;
 250     }
 251
 252     ds->first_time = 1;
 253     obt_as.endianness = 0;
 254     audio_pcm_init_info (&hw->info, &obt_as);
 255
 256     if (bc.dwBufferBytes & hw->info.align) {
 257         dolog (
 258             "GetCaps returned misaligned buffer size %ld, alignment %d\n",
 259             bc.dwBufferBytes, hw->info.align + 1
 260             );
 261     }
 262     hw->samples = bc.dwBufferBytes >> hw->info.shift;
 263
 264 #ifdef DEBUG_DSOUND
 265     dolog ("caps %ld, desc %ld\n",
 266            bc.dwBufferBytes, bd.dwBufferBytes);
 267
 268     dolog ("bufsize %d, freq %d, chan %d, fmt %d\n",
 269            hw->bufsize, settings.freq, settings.nchannels, settings.fmt);
 270 #endif
 271     return 0;
 272
 273  fail0:
 274     glue (dsound_fini_, TYPE) (hw);
 275     return -1;
 276 }
 277
 278 #undef NAME
 279 #undef TYPE
 280 #undef IFACE
 281 #undef BUFPTR
 282 #undef FIELD