diff options
Diffstat (limited to 'drivers/media/video/gspca/tv8532.c')
| -rw-r--r-- | drivers/media/video/gspca/tv8532.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/media/video/gspca/tv8532.c b/drivers/media/video/gspca/tv8532.c index 968a5911704..f6a4733d026 100644 --- a/drivers/media/video/gspca/tv8532.c +++ b/drivers/media/video/gspca/tv8532.c @@ -30,15 +30,14 @@ MODULE_LICENSE("GPL"); struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ - int buflen; /* current length of tmpbuf */ + __u32 buflen; /* current length of tmpbuf */ __u8 tmpbuf[352 * 288 + 10 * 288]; /* no protection... */ __u8 tmpbuf2[352 * 288]; /* no protection... */ - unsigned short brightness; - unsigned short contrast; + __u16 brightness; + __u16 contrast; - char packet; - char synchro; + __u8 packet; }; /* V4L2 controls supported by the driver */ @@ -443,6 +442,9 @@ static int sd_start(struct gspca_dev *gspca_dev) /************************************************/ tv_8532_PollReg(gspca_dev); reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */ + + gspca_dev->empty_packet = 0; /* check the empty packets */ + return 0; } @@ -455,7 +457,7 @@ static void tv8532_preprocess(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* we should received a whole frame with header and EOL marker - * in gspca_dev->tmpbuf and return a GBRG pattern in gspca_dev->tmpbuf2 + * in sd->tmpbuf and return a GBRG pattern in sd->tmpbuf2 * sequence 2bytes header the Alternate pixels bayer GB 4 bytes * Alternate pixels bayer RG 4 bytes EOL */ int width = gspca_dev->width; @@ -509,23 +511,24 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, /* header 0x80 0x80 0x80 0x80 0x80 */ /* packet 00 63 127 145 00 */ - /* sof 0 1 1 0 0 */ + /* empty 1 0 0 1 1 */ /* update sequence */ if (sd->packet == 63 || sd->packet == 127) - sd->synchro = 1; + gspca_dev->empty_packet = 0; /* is there a frame start ? */ + /* (each packet is 2 lines plus 10 bytes) */ if (sd->packet >= (gspca_dev->height >> 1) - 1) { - PDEBUG(D_PACK, "SOF > %d packet %d", sd->synchro, - sd->packet); - if (!sd->synchro) { /* start of frame */ + PDEBUG(D_PACK, "empty %d packet %d", + gspca_dev->empty_packet, sd->packet); + if (gspca_dev->empty_packet) { /* start of frame */ if (gspca_dev->last_packet_type == FIRST_PACKET) { tv8532_preprocess(gspca_dev); frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, sd->tmpbuf2, - gspca_dev->width * + gspca_dev->height * gspca_dev->width); } gspca_frame_add(gspca_dev, FIRST_PACKET, @@ -544,18 +547,13 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, return; } - if (!sd->synchro) { + if (gspca_dev->empty_packet) { /* Drop packet frame corrupt */ - PDEBUG(D_PACK, "DROP SOF %d packet %d", - sd->synchro, sd->packet); + PDEBUG(D_PACK, "DROP empty %d packet %d", + gspca_dev->empty_packet, sd->packet); sd->packet = 0; gspca_dev->last_packet_type = DISCARD_PACKET; - return; } - sd->synchro = 1; - sd->packet++; - memcpy(&sd->tmpbuf[sd->buflen], data, len); - sd->buflen += len; } static void setcontrast(struct gspca_dev *gspca_dev) |