Ejemplos de check_for_elapsed_periods en C++ (Cpp)

Ejemplo n.º 1

Archivo: audio.c Proyecto: Adjustxx/Savaged-Zen

static void read_completed(struct urb *urb)
{
	struct snd_usb_caiaq_cb_info *info = urb->context;
	struct snd_usb_caiaqdev *dev;
	struct urb *out;
	int frame, len, send_it = 0, outframe = 0;

	if (urb->status || !info)
		return;

	dev = info->dev;

	if (!dev->streaming)
		return;

	out = dev->data_urbs_out[info->index];

	/* read the recently received packet and send back one which has
	 * the same layout */
	for (frame = 0; frame < FRAMES_PER_URB; frame++) {
		if (urb->iso_frame_desc[frame].status)
			continue;

		len = urb->iso_frame_desc[outframe].actual_length;
		out->iso_frame_desc[outframe].length = len;
		out->iso_frame_desc[outframe].actual_length = 0;
		out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;

		if (len > 0) {
			spin_lock(&dev->spinlock);
			fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
			read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
			spin_unlock(&dev->spinlock);
			check_for_elapsed_periods(dev, dev->sub_playback);
			check_for_elapsed_periods(dev, dev->sub_capture);
			send_it = 1;
		}

		outframe++;
	}

	if (send_it) {
		out->number_of_packets = FRAMES_PER_URB;
		out->transfer_flags = URB_ISO_ASAP;
		usb_submit_urb(out, GFP_ATOMIC);
	}

	/* re-submit inbound urb */
	for (frame = 0; frame < FRAMES_PER_URB; frame++) {
		urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
		urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
		urb->iso_frame_desc[frame].actual_length = 0;
	}

	urb->number_of_packets = FRAMES_PER_URB;
	urb->transfer_flags = URB_ISO_ASAP;
	usb_submit_urb(urb, GFP_ATOMIC);
}

Ejemplo n.º 2

static void read_completed(struct urb *urb)
{
	struct snd_usb_caiaq_cb_info *info = urb->context;
	struct snd_usb_caiaqdev *dev;
	struct urb *out = NULL;
	int i, frame, len, send_it = 0, outframe = 0;
	size_t offset = 0;

	if (urb->status || !info)
		return;

	dev = info->dev;

	if (!dev->streaming)
		return;

	/* find an unused output urb that is unused */
	for (i = 0; i < N_URBS; i++)
		if (test_and_set_bit(i, &dev->outurb_active_mask) == 0) {
			out = dev->data_urbs_out[i];
			break;
		}

	if (!out) {
		log("Unable to find an output urb to use\n");
		goto requeue;
	}

	/* read the recently received packet and send back one which has
	 * the same layout */
	for (frame = 0; frame < FRAMES_PER_URB; frame++) {
		if (urb->iso_frame_desc[frame].status)
			continue;

		len = urb->iso_frame_desc[outframe].actual_length;
		out->iso_frame_desc[outframe].length = len;
		out->iso_frame_desc[outframe].actual_length = 0;
		out->iso_frame_desc[outframe].offset = offset;
		offset += len;

		if (len > 0) {
			spin_lock(&dev->spinlock);
			fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
			read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
			spin_unlock(&dev->spinlock);
			check_for_elapsed_periods(dev, dev->sub_playback);
			check_for_elapsed_periods(dev, dev->sub_capture);
			send_it = 1;
		}

		outframe++;
	}

	if (send_it) {
		out->number_of_packets = outframe;
		out->transfer_flags = URB_ISO_ASAP;
		usb_submit_urb(out, GFP_ATOMIC);
	} else {
		struct snd_usb_caiaq_cb_info *oinfo = out->context;
		clear_bit(oinfo->index, &dev->outurb_active_mask);
	}

requeue:
	/* re-submit inbound urb */
	for (frame = 0; frame < FRAMES_PER_URB; frame++) {
		urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
		urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
		urb->iso_frame_desc[frame].actual_length = 0;
	}

	urb->number_of_packets = FRAMES_PER_URB;
	urb->transfer_flags = URB_ISO_ASAP;
	usb_submit_urb(urb, GFP_ATOMIC);
}