FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/usb/uaudio_pcm.c

     /* $FreeBSD$ */
     
     /*-
      * Copyright (c) 2000-2002 Hiroyuki Aizu <aizu@navi.org>
      * Copyright (c) 2006 Hans Petter Selasky
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    
    #ifdef HAVE_KERNEL_OPTION_HEADERS
    #include "opt_snd.h"
    #endif
    
    #include <dev/sound/pcm/sound.h>
    #include <dev/sound/chip.h>
    #include <dev/sound/usb/uaudio.h>
    
    #include "mixer_if.h"
    
    /************************************************************/
    static void *
    ua_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
    {
            return (uaudio_chan_init(devinfo, b, c, dir));
    }
    
    static int
    ua_chan_free(kobj_t obj, void *data)
    {
            return (uaudio_chan_free(data));
    }
    
    static int
    ua_chan_setformat(kobj_t obj, void *data, uint32_t format)
    {
            /*
             * At this point, no need to query as we
             * shouldn't select an unsorted format
             */
            return (uaudio_chan_set_param_format(data, format));
    }
    
    static uint32_t
    ua_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
    {
            return (uaudio_chan_set_param_speed(data, speed));
    }
    
    static uint32_t
    ua_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
    {
            return (uaudio_chan_set_param_blocksize(data, blocksize));
    }
    
    static int
    ua_chan_setfragments(kobj_t obj, void *data, uint32_t blocksize, uint32_t blockcount)
    {
            return (uaudio_chan_set_param_fragments(data, blocksize, blockcount));
    }
    
    static int
    ua_chan_trigger(kobj_t obj, void *data, int go)
    {
            if (PCMTRIG_COMMON(go)) {
                    if (go == PCMTRIG_START) {
                            uaudio_chan_start(data);
                    } else {
                            uaudio_chan_stop(data);
                    }
            }
            return (0);
    }
    
    static uint32_t
    ua_chan_getptr(kobj_t obj, void *data)
    {
            return (uaudio_chan_getptr(data));
    }
    
   static struct pcmchan_caps *
   ua_chan_getcaps(kobj_t obj, void *data)
   {
           return (uaudio_chan_getcaps(data));
   }
   
   static struct pcmchan_matrix *
   ua_chan_getmatrix(kobj_t obj, void *data, uint32_t format)
   {
           return (uaudio_chan_getmatrix(data, format));
   }
   
   static kobj_method_t ua_chan_methods[] = {
           KOBJMETHOD(channel_init, ua_chan_init),
           KOBJMETHOD(channel_free, ua_chan_free),
           KOBJMETHOD(channel_setformat, ua_chan_setformat),
           KOBJMETHOD(channel_setspeed, ua_chan_setspeed),
           KOBJMETHOD(channel_setblocksize, ua_chan_setblocksize),
           KOBJMETHOD(channel_setfragments, ua_chan_setfragments),
           KOBJMETHOD(channel_trigger, ua_chan_trigger),
           KOBJMETHOD(channel_getptr, ua_chan_getptr),
           KOBJMETHOD(channel_getcaps, ua_chan_getcaps),
           KOBJMETHOD(channel_getmatrix, ua_chan_getmatrix),
           KOBJMETHOD_END
   };
   
   CHANNEL_DECLARE(ua_chan);
   
   /************************************************************/
   static int
   ua_mixer_init(struct snd_mixer *m)
   {
           return (uaudio_mixer_init_sub(mix_getdevinfo(m), m));
   }
   
   static int
   ua_mixer_set(struct snd_mixer *m, unsigned type, unsigned left, unsigned right)
   {
           struct mtx *mtx = mixer_get_lock(m);
           uint8_t do_unlock;
   
           if (mtx_owned(mtx)) {
                   do_unlock = 0;
           } else {
                   do_unlock = 1;
                   mtx_lock(mtx);
           }
           uaudio_mixer_set(mix_getdevinfo(m), m, type, left, right);
           if (do_unlock) {
                   mtx_unlock(mtx);
           }
           return (left | (right << 8));
   }
   
   static uint32_t
   ua_mixer_setrecsrc(struct snd_mixer *m, uint32_t src)
   {
           struct mtx *mtx = mixer_get_lock(m);
           int retval;
           uint8_t do_unlock;
   
           if (mtx_owned(mtx)) {
                   do_unlock = 0;
           } else {
                   do_unlock = 1;
                   mtx_lock(mtx);
           }
           retval = uaudio_mixer_setrecsrc(mix_getdevinfo(m), m, src);
           if (do_unlock) {
                   mtx_unlock(mtx);
           }
           return (retval);
   }
   
   static int
   ua_mixer_uninit(struct snd_mixer *m)
   {
           return (uaudio_mixer_uninit_sub(mix_getdevinfo(m), m));
   }
   
   static kobj_method_t ua_mixer_methods[] = {
           KOBJMETHOD(mixer_init, ua_mixer_init),
           KOBJMETHOD(mixer_uninit, ua_mixer_uninit),
           KOBJMETHOD(mixer_set, ua_mixer_set),
           KOBJMETHOD(mixer_setrecsrc, ua_mixer_setrecsrc),
           KOBJMETHOD_END
   };
   
   MIXER_DECLARE(ua_mixer);
   /************************************************************/
   
   
   static int
   ua_probe(device_t dev)
   {
           struct sndcard_func *func;
   
           /* the parent device has already been probed */
   
           func = device_get_ivars(dev);
   
           if ((func == NULL) ||
               (func->func != SCF_PCM)) {
                   return (ENXIO);
           }
           device_set_desc(dev, "USB audio");
   
           return (BUS_PROBE_DEFAULT);
   }
   
   static int
   ua_attach(device_t dev)
   {
           return (uaudio_attach_sub(dev, &ua_mixer_class, &ua_chan_class));
   }
   
   static int
   ua_detach(device_t dev)
   {
           return (uaudio_detach_sub(dev));
   }
   
   /************************************************************/
   
   static device_method_t ua_pcm_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe, ua_probe),
           DEVMETHOD(device_attach, ua_attach),
           DEVMETHOD(device_detach, ua_detach),
   
           DEVMETHOD_END
   };
   
   static driver_t ua_pcm_driver = {
           "pcm",
           ua_pcm_methods,
           PCM_SOFTC_SIZE,
   };
   
   DRIVER_MODULE(ua_pcm, uaudio, ua_pcm_driver, pcm_devclass, 0, 0);
   MODULE_DEPEND(ua_pcm, uaudio, 1, 1, 1);
   MODULE_DEPEND(ua_pcm, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
   MODULE_VERSION(ua_pcm, 1);

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