diff options
| author | Jean-Francois Moine <moinejf@free.fr> | 2008-09-20 05:44:21 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:37:11 -0200 |
| commit | 1b60e1adc713e8d375dc117f5c3b5032d5b79abe (patch) | |
| tree | d3488e97bc1311e84e14434f2a0720b3482b6279 | |
| parent | 9de436cfc4e966652f8804f0dda8d338ca7fe89c (diff) | |
V4L/DVB (9078): gspca: New exported function to retrieve the current frame buffer.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 33 | ||||
| -rw-r--r-- | drivers/media/video/gspca/gspca.h | 1 |
2 files changed, 22 insertions, 12 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index e4c998965ab..4694dc14a24 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -102,6 +102,22 @@ static struct vm_operations_struct gspca_vm_ops = { .close = gspca_vm_close, }; +/* get the current input frame buffer */ +struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev) +{ + struct gspca_frame *frame; + int i; + + i = gspca_dev->fr_i; + i = gspca_dev->fr_queue[i]; + frame = &gspca_dev->frame[i]; + if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) + != V4L2_BUF_FLAG_QUEUED) + return NULL; + return frame; +} +EXPORT_SYMBOL(gspca_get_i_frame); + /* * fill a video frame from an URB and resubmit */ @@ -110,7 +126,7 @@ static void fill_frame(struct gspca_dev *gspca_dev, { struct gspca_frame *frame; __u8 *data; /* address of data in the iso message */ - int i, j, len, st; + int i, len, st; cam_pkt_op pkt_scan; if (urb->status != 0) { @@ -124,11 +140,8 @@ static void fill_frame(struct gspca_dev *gspca_dev, for (i = 0; i < urb->number_of_packets; i++) { /* check the availability of the frame buffer */ - j = gspca_dev->fr_i; - j = gspca_dev->fr_queue[j]; - frame = &gspca_dev->frame[j]; - if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) - != V4L2_BUF_FLAG_QUEUED) { + frame = gspca_get_i_frame(gspca_dev); + if (!frame) { gspca_dev->last_packet_type = DISCARD_PACKET; break; } @@ -185,7 +198,6 @@ static void bulk_irq(struct urb *urb { struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; struct gspca_frame *frame; - int j; PDEBUG(D_PACK, "bulk irq"); if (!gspca_dev->streaming) @@ -199,11 +211,8 @@ static void bulk_irq(struct urb *urb } /* check the availability of the frame buffer */ - j = gspca_dev->fr_i; - j = gspca_dev->fr_queue[j]; - frame = &gspca_dev->frame[j]; - if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) - != V4L2_BUF_FLAG_QUEUED) { + frame = gspca_get_i_frame(gspca_dev); + if (!frame) { gspca_dev->last_packet_type = DISCARD_PACKET; } else { PDEBUG(D_PACK, "packet l:%d", urb->actual_length); diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h index 78a35a88cf9..72a28857305 100644 --- a/drivers/media/video/gspca/gspca.h +++ b/drivers/media/video/gspca/gspca.h @@ -178,6 +178,7 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev, struct gspca_frame *frame, const __u8 *data, int len); +struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev); #ifdef CONFIG_PM int gspca_suspend(struct usb_interface *intf, pm_message_t message); int gspca_resume(struct usb_interface *intf); |