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path: root/drivers/media/video/gspca/pac7311.c
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Diffstat (limited to 'drivers/media/video/gspca/pac7311.c')
-rw-r--r--drivers/media/video/gspca/pac7311.c29
1 files changed, 11 insertions, 18 deletions
diff --git a/drivers/media/video/gspca/pac7311.c b/drivers/media/video/gspca/pac7311.c
index 44fed9686729..1cb7e99e92bd 100644
--- a/drivers/media/video/gspca/pac7311.c
+++ b/drivers/media/video/gspca/pac7311.c
@@ -270,7 +270,7 @@ static void reg_w_buf(struct gspca_dev *gspca_dev,
memcpy(gspca_dev->usb_buf, buffer, len);
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
- 1, /* request */
+ 0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, len,
@@ -599,7 +599,6 @@ static const unsigned char pac_jpeg_header2[] = {
};
static void pac_start_frame(struct gspca_dev *gspca_dev,
- struct gspca_frame *frame,
__u16 lines, __u16 samples_per_line)
{
unsigned char tmpbuf[4];
@@ -624,19 +623,13 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
int len) /* iso packet length */
{
struct sd *sd = (struct sd *) gspca_dev;
+ u8 *image;
unsigned char *sof;
- struct gspca_frame *frame;
sof = pac_find_sof(&sd->sof_read, data, len);
if (sof) {
int n, lum_offset, footer_length;
- frame = gspca_get_i_frame(gspca_dev);
- if (frame == NULL) {
- gspca_dev->last_packet_type = DISCARD_PACKET;
- return;
- }
-
/* 6 bytes after the FF D9 EOF marker a number of lumination
bytes are send corresponding to different parts of the
image, the 14th and 15th byte after the EOF seem to
@@ -647,16 +640,16 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
/* Finish decoding current frame */
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
if (n < 0) {
- frame->data_end += n;
+ gspca_dev->image_len += n;
n = 0;
+ } else {
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
}
- gspca_frame_add(gspca_dev, INTER_PACKET,
- data, n);
- if (gspca_dev->last_packet_type != DISCARD_PACKET &&
- frame->data_end[-2] == 0xff &&
- frame->data_end[-1] == 0xd9)
- gspca_frame_add(gspca_dev, LAST_PACKET,
- NULL, 0);
+ image = gspca_dev->image;
+ if (image != NULL
+ && image[gspca_dev->image_len - 2] == 0xff
+ && image[gspca_dev->image_len - 1] == 0xd9)
+ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
n = sof - data;
len -= n;
@@ -671,7 +664,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
atomic_set(&sd->avg_lum, -1);
/* Start the new frame with the jpeg header */
- pac_start_frame(gspca_dev, frame,
+ pac_start_frame(gspca_dev,
gspca_dev->height, gspca_dev->width);
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);