diff options
Diffstat (limited to 'drivers/media/video/gspca/pac7302.c')
| -rw-r--r-- | drivers/media/video/gspca/pac7302.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c index e0fd767984b..74acceea809 100644 --- a/drivers/media/video/gspca/pac7302.c +++ b/drivers/media/video/gspca/pac7302.c @@ -855,7 +855,7 @@ static void pac_start_frame(struct gspca_dev *gspca_dev, { unsigned char tmpbuf[4]; - gspca_frame_add(gspca_dev, FIRST_PACKET, frame, + gspca_frame_add(gspca_dev, FIRST_PACKET, pac_jpeg_header1, sizeof(pac_jpeg_header1)); tmpbuf[0] = lines >> 8; @@ -863,25 +863,31 @@ static void pac_start_frame(struct gspca_dev *gspca_dev, tmpbuf[2] = samples_per_line >> 8; tmpbuf[3] = samples_per_line & 0xff; - gspca_frame_add(gspca_dev, INTER_PACKET, frame, + gspca_frame_add(gspca_dev, INTER_PACKET, tmpbuf, sizeof(tmpbuf)); - gspca_frame_add(gspca_dev, INTER_PACKET, frame, + gspca_frame_add(gspca_dev, INTER_PACKET, pac_jpeg_header2, sizeof(pac_jpeg_header2)); } /* this function is run at interrupt level */ static void sd_pkt_scan(struct gspca_dev *gspca_dev, - struct gspca_frame *frame, /* target */ - __u8 *data, /* isoc packet */ + u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; + struct gspca_frame *frame; unsigned char *sof; 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 @@ -895,12 +901,12 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, frame->data_end += n; n = 0; } - frame = gspca_frame_add(gspca_dev, INTER_PACKET, frame, + 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) - frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, + gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); n = sof - data; @@ -920,7 +926,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, pac_start_frame(gspca_dev, frame, gspca_dev->width, gspca_dev->height); } - gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); + gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) |