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Commit f75c4950 authored by Jean-Francois Moine's avatar Jean-Francois Moine Committed by Mauro Carvalho Chehab
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V4L/DVB (8675): gspca: Pixmap PJPG (Pixart 73xx JPEG) added, generated by pac7311. 

The JPEG frames generated by the Pixart 73xx have:
- special markers 'ff ff ff xx' every 1024/512 bytes,
- unused 8 bits at end of JPEG blocks,
and then ask for a new pixel format.
Signed-off-by: default avatarJean-Francois Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 6ab0b174
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Showing with 10 additions and 191 deletions
drivers/media/video/gspca/pac7311.c
View file @ f75c4950
......@@ -22,6 +22,7 @@
#define MODULE_NAME "pac7311"
#include "gspca.h"
#include "jpeg.h"
MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7311");
......@@ -40,7 +41,6 @@ struct sd {
unsigned char colors;
unsigned char autogain;
char ffnb; /* number of 'ff' in the previous frame */
char tosof; /* number of bytes before next start of frame */
signed char ag_cnt;
#define AG_CNT_START 13
......@@ -121,95 +121,23 @@ static struct ctrl sd_ctrls[] = {
};
static struct v4l2_pix_format vga_mode[] = {
{160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
{160, 120, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 160,
.sizeimage = 160 * 120 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 2},
{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
{320, 240, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 1},
{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0},
};
#define PAC7311_JPEG_HEADER_SIZE (sizeof pac7311_jpeg_header) /* (594) */
static const __u8 pac7311_jpeg_header[] = {
0xff, 0xd8,
0xff, 0xe0, 0x00, 0x03, 0x20,
0xff, 0xc0, 0x00, 0x11, 0x08,
0x01, 0xe0, /* 12: height */
0x02, 0x80, /* 14: width */
0x03, /* 16 */
0x01, 0x21, 0x00,
0x02, 0x11, 0x01,
0x03, 0x11, 0x01,
0xff, 0xdb, 0x00, 0x84,
0x00, 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e, 0x0d,
0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, 0x1a, 0x18, 0x16,
0x16, 0x18, 0x31, 0x23, 0x25, 0x1d, 0x28, 0x3a, 0x33, 0x3d,
0x3c, 0x39, 0x33, 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40,
0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57, 0x5f,
0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71, 0x79, 0x70, 0x64,
0x78, 0x5c, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12, 0x12, 0x18,
0x15, 0x18, 0x2f, 0x1a, 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0xff, 0xc4, 0x01, 0xa2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31,
0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32,
0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52,
0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83,
0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94,
0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
0xd9, 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8,
0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa, 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
0x0b, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41,
0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14,
0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83,
0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94,
0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
0x11, 0x00, 0x3f, 0x00
};
/* pac 7302 */
static const __u8 probe_7302[] = {
/* index,value */
......@@ -566,7 +494,6 @@ static void sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->ffnb = 0;
sd->tosof = 0;
if (sd->sensor == SENSOR_PAC7302)
......@@ -699,34 +626,6 @@ static void do_autogain(struct gspca_dev *gspca_dev)
}
}
/* output the jpeg header */
static void put_jpeg_head(struct gspca_dev *gspca_dev,
struct gspca_frame *frame)
{
struct sd *sd = (struct sd *) gspca_dev;
unsigned char tmpbuf[4];
if (sd->ag_cnt >= 0) {
if (--sd->ag_cnt < 0) {
sd->ag_cnt = AG_CNT_START;
atomic_set(&sd->avg_lum, sd->lum_sum / AG_CNT_START);
atomic_set(&sd->do_gain, 1);
}
}
gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
(__u8 *) pac7311_jpeg_header,
12);
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,
(__u8 *) &pac7311_jpeg_header[16],
PAC7311_JPEG_HEADER_SIZE - 16);
}
/* this function is run at interrupt level */
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
......@@ -739,24 +638,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
#define INTER_FRAME 0x53 /* eof + inter frame + sof */
#define LUM_OFFSET 0x1e /* reverse offset / start of frame */
/*fixme:test+*/
/* dump the packet */
if (gspca_debug & 0x200) {
static char tmp[50];
PDEBUG(0x200, "pkt_scan");
tmp[0] = 0;
for (i = 0; i < len; i++) {
if (i % 16 == 0 && i != 0) {
PDEBUG(0x200, "%s", tmp);
tmp[0] = 0;
}
sprintf(&tmp[(i % 16) * 3], "%02x ", data[i]);
}
if (tmp[0] != 0)
PDEBUG(0x200, "%s", tmp);
}
/*fixme:test-*/
/*
* inside a frame, there may be:
* escaped ff ('ff 00')
......@@ -767,47 +648,10 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
* 0x33 bytes
* one byte luminosity
* 0x16 bytes
* ff ff 00 ff 96 62 44 start of frame header
* ff ff 00 ff 96 62 44 start of frame
*/
if (sd->tosof == 0) { /* if inside a frame */
/* check for 'ff ff ff xx' at start and at end of packet */
/* (len is always >= 3 and xx never ff) */
switch (sd->ffnb) {
case 1:
if (data[0] != 0xff) { /* can be '00' only */
__u8 ff;
sd->ffnb = 0;
ff = 0xff;
gspca_frame_add(gspca_dev, INTER_PACKET,
frame, &ff, 1);
break; /* keep 'ff 00' */
}
/* fall thru */
case 2:
case 3:
data += 4 - sd->ffnb;
len -= 4 - sd->ffnb;
sd->ffnb = 0;
break;
}
if (data[len - 1] == 0xff) {
if (data[len - 2] == 0xff) {
if (data[len - 3] == 0xff) {
sd->ffnb = 3;
len -= 3;
} else {
sd->ffnb = 2;
len -= 2;
}
} else {
sd->ffnb = 1;
len--;
}
}
} else { /* outside a frame */
if (sd->tosof != 0) { /* if outside a frame */
/* get the luminosity and go to the start of frame */
data += sd->tosof;
......@@ -815,14 +659,14 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
if (sd->tosof > LUM_OFFSET)
sd->lum_sum += data[-LUM_OFFSET];
sd->tosof = 0;
put_jpeg_head(gspca_dev, frame);
jpeg_put_header(gspca_dev, frame, 1, 0x21);
}
for (i = 0; i < len; i++) {
if (data[i] != 0xff)
continue;
switch (data[i + 1]) {
case 0xd9: /* end of frame */
case 0xd9: /* 'ff d9' end of frame */
frame = gspca_frame_add(gspca_dev,
LAST_PACKET,
frame, data, i + 2);
......@@ -835,33 +679,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
sd->tosof = -len;
break;
}
put_jpeg_head(gspca_dev, frame);
break;
case 0xff: /* 'ff ff ff xx' */
/*fixme:test+*/
/* is there a start of frame ? */
if (data[i + 2] == 0x00) {
static __u8 ffd9[2] = {0xff, 0xd9};
gspca_frame_add(gspca_dev,
INTER_PACKET,
frame, data,
i + 7 - INTER_FRAME);
frame = gspca_frame_add(gspca_dev,
LAST_PACKET,
frame, ffd9, 2);
data += i + 7;
len -= i + 7;
i = 0;
put_jpeg_head(gspca_dev, frame);
break;
}
/*fixme:test-*/
gspca_frame_add(gspca_dev, INTER_PACKET,
frame, data, i);
data += i + 4;
len -= i + 4;
i = 0;
jpeg_put_header(gspca_dev, frame, 1, 0x21);
break;
}
}
......
include/linux/videodev2.h
View file @ f75c4950
......@@ -334,6 +334,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_SPCA508 v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */
#define V4L2_PIX_FMT_SPCA561 v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */
#define V4L2_PIX_FMT_PAC207 v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */
#define V4L2_PIX_FMT_PJPG v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */
/*
* F O R M A T E N U M E R A T I O N
......
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