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>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index e4c9989..4694dc1 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -102,6 +102,22 @@
.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 @@
{
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 @@
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 @@
{
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 @@
}
/* 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);