audio/usb_ac/usb_ac.c

4502 	usb_audio_eng_t *engp;
4508 		engp = &statep->engines[i];
4511 		if (engp->af_engp == NULL)
4513 		if (usb_ac_set_format(statep, engp) != USB_SUCCESS) {
4519 		if (engp->started) {
4520 			(void) usb_engine_start(engp);
4575 usb_ac_rem_eng(usb_ac_state_t *statep, usb_audio_eng_t *engp)
4577 	if (statep->usb_ac_audio_dev == NULL || engp->af_engp == NULL)
4580 	audio_dev_remove_engine(statep->usb_ac_audio_dev, engp->af_engp);
4581 	audio_engine_free(engp->af_engp);
4583 	mutex_enter(&engp->lock);
4584 	engp->af_engp = NULL;
4585 	engp->streams = NULL;
4586 	mutex_exit(&engp->lock);
4588 	mutex_destroy(&engp->lock);
4589 	cv_destroy(&engp->usb_audio_cv);
4597 	usb_audio_eng_t *engp;
4608 		engp = &(uacp->engines[0]);
4610 		engp = &(uacp->engines[1]);
4613 	cv_init(&engp->usb_audio_cv, NULL, CV_DRIVER, NULL);
4615 	mutex_init(&engp->lock, NULL, MUTEX_DRIVER, NULL);
4617 	mutex_enter(&engp->lock);
4619 	engp->af_eflags =
4621 	engp->statep = uacp;
4624 	usb_ac_max_fmt(&(asinfo->acs_streams_reg), &engp->fmt);
4628 	if (engp->fmt.ch == 2) {
4629 		engp->af_defgain = AUDIO_CTRL_STEREO_VAL(defgain, defgain);
4631 		engp->af_defgain = defgain;
4633 	engp->streams = asinfo;
4635 	mutex_exit(&engp->lock);
4637 	af_engp = audio_engine_alloc(&usb_engine_ops, engp->af_eflags);
4644 	ASSERT(engp->af_engp == 0);
4646 	mutex_enter(&engp->lock);
4647 	engp->af_engp = af_engp;
4648 	mutex_exit(&engp->lock);
4650 	audio_engine_set_private(af_engp, engp);
4656 	if (usb_ac_set_format(uacp, engp) != USB_SUCCESS) {
4665 		usb_ac_rem_eng(uacp, engp);
4725 usb_eng_bufio(usb_audio_eng_t *engp, void *buf, size_t sz)
4730 	if (engp->af_eflags & ENGINE_OUTPUT_CAP) {
4731 		src = &engp->bufpos;
4735 		dst = &engp->bufpos;
4744 	if (engp->bufpos + sz >= engp->bufendp) {
4745 		cpsz = (size_t)engp->bufendp - (size_t)engp->bufpos;
4750 		engp->bufpos = engp->bufp;
4758 		engp->bufpos += cpsz;
4760 	engp->bufio_count++;
5338 	usb_audio_eng_t *engp = &(statep->engines[0]);
5339 	unsigned reqframes = samples >> engp->frsmshift;
5345 	mutex_enter(&engp->lock);
5346 	if (!engp->started) {
5347 		mutex_exit(&engp->lock);
5351 	engp->busy = B_TRUE;
5352 	mutex_exit(&engp->lock);
5357 		mutex_enter(&engp->lock);
5359 		if (frames > engp->fragfr)
5360 			frames = engp->fragfr;
5362 		sz = (frames << engp->frsmshift) << engp->smszshift;
5365 		usb_eng_bufio(engp, bp, sz);
5366 		engp->frames += frames;
5369 		mutex_exit(&engp->lock);
5372 	mutex_enter(&engp->lock);
5373 	engp->io_count++;
5374 	engp->busy = B_FALSE;
5375 	cv_signal(&engp->usb_audio_cv);
5376 	mutex_exit(&engp->lock);
5387 	usb_audio_eng_t *engp = &(statep->engines[1]);
5388 	unsigned reqframes = samples >> engp->frsmshift;
5394 	mutex_enter(&engp->lock);
5396 	if (!engp->started) {
5398 		mutex_exit(&engp->lock);
5401 	engp->busy = B_TRUE;
5402 	mutex_exit(&engp->lock);
5406 		mutex_enter(&engp->lock);
5409 		if (frames > engp->fragfr)
5410 			frames = engp->fragfr;
5412 		sz = (frames << engp->frsmshift) << engp->smszshift;
5415 		usb_eng_bufio(engp, bp, sz);
5416 		engp->frames += frames;
5419 		mutex_exit(&engp->lock);
5422 	mutex_enter(&engp->lock);
5423 	engp->io_count++;
5424 	engp->busy = B_FALSE;
5425 	cv_signal(&engp->usb_audio_cv);
5426 	mutex_exit(&engp->lock);
5437 	usb_audio_eng_t *engp = (usb_audio_eng_t *)arg;
5438 	usb_ac_state_t *statep = engp->statep;
5450 	mutex_enter(&engp->lock);
5452 	engp->intrate =  150;
5453 	engp->sampsz = engp->fmt.prec / 8;
5454 	engp->framesz = engp->sampsz * engp->fmt.ch;
5456 	if (engp->fmt.ch > 2) {
5458 		    "unsupported channel count: %u", engp->fmt.ch);
5459 		mutex_exit(&engp->lock);
5462 	if (engp->fmt.prec > 16) {
5464 		    "unsupported precision: %u", engp->fmt.prec);
5465 		mutex_exit(&engp->lock);
5469 	engp->frsmshift = engp->fmt.ch / 2;
5470 	engp->smszshift = engp->sampsz / 2;
5480 	engp->fragsz = engp->fmt.sr * engp->fmt.ch / engp->intrate;
5481 	if (engp->fragsz & 1)
5482 		engp->fragsz++;
5483 	engp->fragsz *= engp->sampsz;
5484 	engp->fragfr = engp->fragsz / engp->framesz;
5486 	engp->nfrags = 10;
5487 	engp->bufsz = engp->fragsz * engp->nfrags;
5489 	engp->bufp = kmem_zalloc(engp->bufsz, KM_SLEEP);
5490 	engp->bufpos = engp->bufp;
5491 	engp->bufendp = engp->bufp + engp->bufsz;
5492 	engp->frames = 0;
5493 	engp->io_count = 0;
5494 	engp->bufio_count = 0;
5495 	engp->started = B_FALSE;
5496 	engp->busy = B_FALSE;
5498 	*nframesp = engp->nfrags * engp->fragfr;
5499 	*bufp = engp->bufp;
5501 	mutex_exit(&engp->lock);
5503 	if (usb_ac_setup(statep, engp) != USB_SUCCESS) {
5529 	usb_audio_eng_t *engp = (usb_audio_eng_t *)arg;
5530 	usb_ac_state_t *statep = engp->statep;
5532 	mutex_enter(&engp->lock);
5533 	while (engp->busy) {
5534 		cv_wait(&engp->usb_audio_cv, &engp->lock);
5537 	mutex_exit(&engp->lock);
5540 		usb_ac_teardown(statep, engp);
5545 	mutex_enter(&engp->lock);
5547 	if (engp->bufp != NULL) {
5548 		kmem_free(engp->bufp, engp->bufsz);
5549 		engp->bufp = NULL;
5550 		engp->bufpos = NULL;
5551 		engp->bufendp = NULL;
5554 	mutex_exit(&engp->lock);
5564 	usb_audio_eng_t *engp = (usb_audio_eng_t *)arg;
5568 	mutex_enter(&engp->lock);
5569 	engp->started = B_TRUE;
5570 	mutex_exit(&engp->lock);
5572 	usb_ac_state_t *statep = engp->statep;
5574 	start = ((engp)->af_eflags & ENGINE_OUTPUT_CAP) ?
5577 	if ((*start)(statep, engp) != USB_SUCCESS) {
5579 		    "failed to start %d engine", engp->af_eflags);
5591 	usb_audio_eng_t *engp = (usb_audio_eng_t *)arg;
5593 	mutex_enter(&engp->lock);
5594 	engp->started = B_FALSE;
5595 	mutex_exit(&engp->lock);
5597 	usb_ac_state_t *statep = engp->statep;
5600 	stop = ((engp)->af_eflags & ENGINE_OUTPUT_CAP) ?
5603 	(*stop)(statep, engp);
5610 	usb_audio_eng_t	*engp = arg;
5613 	mutex_enter(&engp->lock);
5614 	val = engp->frames;
5615 	mutex_exit(&engp->lock);
5624 	usb_audio_eng_t *engp = arg;
5626 	switch (engp->fmt.enc) {
5640 	switch (engp->fmt.prec) {
5660 	usb_audio_eng_t *engp = arg;
5662 	return (engp->fmt.ch);
5669 	usb_audio_eng_t *engp = arg;
5671 	return (engp->fmt.sr);
5686 	usb_audio_eng_t *engp = (usb_audio_eng_t *)arg;
5688 	return (engp->fragfr);