85bad58226
appears to be too inaccurate that it can be used to synchronize the playback data stream. If there is a recording endpoint associated with the playback endpoint, use that instead. That means if the isochronous OUT endpoint is asynchronus the USB audio driver will automatically start recording, if possible, to get exact information about the needed sample rate adjustments. In no recording endpoint is present, no rate adaption will be done. While at it fix an issue where the hardware buffer pointers don't get reset at the first device PCM trigger. Make some variables 32-bit to avoid problems with multithreading. MFC after: 3 days PR: 198444
71 lines
3.0 KiB
C
71 lines
3.0 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2000-2002 Hiroyuki Aizu <aizu@navi.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* prototypes from "uaudio.c" used by "uaudio_pcm.c" */
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#ifndef _UAUDIO_H_
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#define _UAUDIO_H_
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struct uaudio_chan;
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struct uaudio_softc;
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struct snd_dbuf;
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struct snd_mixer;
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struct pcm_channel;
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extern int uaudio_attach_sub(device_t dev, kobj_class_t mixer_class,
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kobj_class_t chan_class);
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extern int uaudio_detach_sub(device_t dev);
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extern void *uaudio_chan_init(struct uaudio_softc *sc, struct snd_dbuf *b,
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struct pcm_channel *c, int dir);
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extern int uaudio_chan_free(struct uaudio_chan *ch);
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extern int uaudio_chan_set_param_blocksize(struct uaudio_chan *ch,
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uint32_t blocksize);
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extern int uaudio_chan_set_param_fragments(struct uaudio_chan *ch,
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uint32_t blocksize, uint32_t blockcount);
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extern int uaudio_chan_set_param_speed(struct uaudio_chan *ch,
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uint32_t speed);
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extern int uaudio_chan_getptr(struct uaudio_chan *ch);
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extern struct pcmchan_caps *uaudio_chan_getcaps(struct uaudio_chan *ch);
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extern struct pcmchan_matrix *uaudio_chan_getmatrix(struct uaudio_chan *ch,
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uint32_t format);
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extern int uaudio_chan_set_param_format(struct uaudio_chan *ch,
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uint32_t format);
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extern void uaudio_chan_start(struct uaudio_chan *ch);
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extern void uaudio_chan_stop(struct uaudio_chan *ch);
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extern int uaudio_mixer_init_sub(struct uaudio_softc *sc,
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struct snd_mixer *m);
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extern int uaudio_mixer_uninit_sub(struct uaudio_softc *sc);
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extern void uaudio_mixer_set(struct uaudio_softc *sc, unsigned type,
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unsigned left, unsigned right);
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extern uint32_t uaudio_mixer_setrecsrc(struct uaudio_softc *sc, uint32_t src);
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int uaudio_get_vendor(device_t dev);
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int uaudio_get_product(device_t dev);
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int uaudio_get_release(device_t dev);
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#endif /* _UAUDIO_H_ */
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