From: Márton Németh <nm...@freemail.hu>
Separate the pkt_scan function. Remove the run-time decision for
PAC7302 and PAC7311 sensors.
Signed-off-by: Márton Németh <nm...@freemail.hu>
Cc: Thomas Kaiser <tho...@kaiser-linux.li>
Cc: Theodore Kilgore <kilg...@auburn.edu>
Cc: Kyle Guinn <ely...@gmail.com>
---
diff -uprN c/drivers/media/video/gspca/pac7311.c
d/drivers/media/video/gspca/pac7311.c
--- c/drivers/media/video/gspca/pac7311.c 2009-10-30 17:05:09.000000000
+0100
+++ d/drivers/media/video/gspca/pac7311.c 2009-10-30 17:15:51.000000000
+0100
@@ -844,7 +844,7 @@ static const unsigned char pac7311_jpeg_
};
/* this function is run at interrupt level */
-static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+static void pac7302_sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *data, /* isoc packet */
int len) /* iso packet length */
@@ -857,17 +857,12 @@ static void sd_pkt_scan(struct gspca_dev
unsigned char tmpbuf[4];
int n, lum_offset, footer_length;
- if (sd->sensor == SENSOR_PAC7302) {
- /* 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
- correspond to the center of the image */
- lum_offset = 61 + sizeof pac_sof_marker;
- footer_length = 74;
- } else {
- lum_offset = 24 + sizeof pac_sof_marker;
- footer_length = 26;
- }
+ /* 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
+ correspond to the center of the image */
+ lum_offset = 61 + sizeof pac_sof_marker;
+ footer_length = 74;
/* Finish decoding current frame */
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
@@ -898,18 +893,76 @@ static void sd_pkt_scan(struct gspca_dev
/* Start the new frame with the jpeg header */
gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
pac7311_jpeg_header1, sizeof(pac7311_jpeg_header1));
- if (sd->sensor == SENSOR_PAC7302) {
- /* The PAC7302 has the image rotated 90 degrees */
- tmpbuf[0] = gspca_dev->width >> 8;
- tmpbuf[1] = gspca_dev->width & 0xff;
- tmpbuf[2] = gspca_dev->height >> 8;
- tmpbuf[3] = gspca_dev->height & 0xff;
- } else {
- tmpbuf[0] = gspca_dev->height >> 8;
- tmpbuf[1] = gspca_dev->height & 0xff;
- tmpbuf[2] = gspca_dev->width >> 8;
- tmpbuf[3] = gspca_dev->width & 0xff;
+
+ /* The PAC7302 has the image rotated 90 degrees */
+ tmpbuf[0] = gspca_dev->width >> 8;
+ tmpbuf[1] = gspca_dev->width & 0xff;
+ tmpbuf[2] = gspca_dev->height >> 8;
+ tmpbuf[3] = gspca_dev->height & 0xff;
+
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame, tmpbuf, 4);
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ pac7311_jpeg_header2, sizeof(pac7311_jpeg_header2));
+ }
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
+}
+
+/* this function is run at interrupt level */
+static void pac7311_sd_pkt_scan(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame, /* target */
+ __u8 *data, /* isoc packet */
+ int len) /* iso packet length */
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ unsigned char *sof;
+
+ sof = pac_find_sof(gspca_dev, data, len);
+ if (sof) {
+ unsigned char tmpbuf[4];
+ int n, lum_offset, footer_length;
+
+ /* 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
+ correspond to the center of the image */
+ lum_offset = 24 + sizeof pac_sof_marker;
+ footer_length = 26;
+
+ /* Finish decoding current frame */
+ n = (sof - data) - (footer_length + sizeof pac_sof_marker);
+ if (n < 0) {
+ frame->data_end += n;
+ n = 0;
}
+ frame = gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ 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,
+ NULL, 0);
+
+ n = sof - data;
+ len -= n;
+ data = sof;
+
+ /* Get average lumination */
+ if (gspca_dev->last_packet_type == LAST_PACKET &&
+ n >= lum_offset)
+ atomic_set(&sd->avg_lum, data[-lum_offset] +
+ data[-lum_offset + 1]);
+ else
+ atomic_set(&sd->avg_lum, -1);
+
+ /* Start the new frame with the jpeg header */
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ pac7311_jpeg_header1, sizeof(pac7311_jpeg_header1));
+
+ tmpbuf[0] = gspca_dev->height >> 8;
+ tmpbuf[1] = gspca_dev->height & 0xff;
+ tmpbuf[2] = gspca_dev->width >> 8;
+ tmpbuf[3] = gspca_dev->width & 0xff;
+
gspca_frame_add(gspca_dev, INTER_PACKET, frame, tmpbuf, 4);
gspca_frame_add(gspca_dev, INTER_PACKET, frame,
pac7311_jpeg_header2, sizeof(pac7311_jpeg_header2));
@@ -1088,7 +1141,7 @@ static struct sd_desc pac7302_sd_desc =
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
- .pkt_scan = sd_pkt_scan,
+ .pkt_scan = pac7302_sd_pkt_scan,
.dq_callback = do_autogain,
};
@@ -1102,7 +1155,7 @@ static struct sd_desc pac7311_sd_desc =
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
- .pkt_scan = sd_pkt_scan,
+ .pkt_scan = pac7311_sd_pkt_scan,
.dq_callback = do_autogain,
};
--
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