video/usbvideo/ibmcam.c

240 	struct usbvideo_frame *frame;
244 		err("ibmcam_find_header: Illegal frame %d.", uvd->curframe);
249 	frame = &uvd->frame[uvd->curframe];
260 				frame->header = RING_QUEUE_PEEK(&uvd->dp, 3);
261 				if ((frame->header == HDRSIG_MODEL1_128x96) ||
262 				    (frame->header == HDRSIG_MODEL1_176x144) ||
263 				    (frame->header == HDRSIG_MODEL1_352x288))
293 				frame->header = HDRSIG_MODEL1_176x144;
303 		 * Headers: (one precedes every frame). nc=no compression,
304 		 * bq=best quality bf=best frame rate.
311 		 * encode the frame type. This is a set of bit fields that
313 		 * do NOT contain frame number because all frames carry
323 				 * Combine 2 bytes of frame type into one
330 				frame->header = (byte3 << 8) | byte4;
345 			info("Skipping frame, no header");
352 	frame->scanstate = ScanState_Lines;
353 	frame->curline = 0;
366  * decoded RGB value into the current frame buffer
376 	struct usbvideo_frame *frame,
391 	assert(frame != NULL);
397 	v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
400 		/* Model 4 frame markers do not carry image size identification */
415 		switch (frame->header) {
432 			err("Unknown header signature 00 FF 00 %02lX", frame->header);
472 	if ((frame->curline + 2) >= VIDEOSIZE_Y(frame->request))
482 	assert(frame->data != NULL);
483 	f = frame->data + (v4l_linesize * frame->curline);
494 	 * where 'i' is the column number [0..VIDEOSIZE_X(frame->request)-1]
498 	for (i = 0; i < VIDEOSIZE_X(frame->request); i++)
507 			 * frame! Obviously our camera/V4L frame size is out
509 			 * out where exactly the new frame arrived.
530 		if (((frame->curline + 2) >= scanHeight) || (i >= scanLength)) {
534 			f = frame->data + (v4l_linesize * frame->curline) + j;
575 		 * sake of frame rate (or any other reason.)
581 		RGB24_PUTPIXEL(frame, i, frame->curline, rv, gv, bv);
588 		 * Typically we do not decide within a legitimate frame
589 		 * that we want to end the frame. However debugging code
590 		 * may detect marker of new frame within the data. Then
598 	 * Account for number of bytes that we wrote into output V4L frame.
603 	frame->curline += 2;
606 	frame->deinterlace = Deinterlace_FillOddLines;
608 	if (frame_done || (frame->curline >= VIDEOSIZE_Y(frame->request)))
641 	struct usbvideo_frame *frame,
664 	v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
682 	if ((frame->curline + 2) >= VIDEOSIZE_Y(frame->request))
690 	 *         VIDEOSIZE_X(frame->request)
697 	f = frame->data + (v4l_linesize * frame->curline);
700 	for (i = 0; i < VIDEOSIZE_X(frame->request); i++) {
726 		if (((frame->curline + 2) >= scanHeight) || (i >= scanLength)) {
730 			f = frame->data + (v4l_linesize * frame->curline) + j;
775 		RGB24_PUTPIXEL(frame, i, frame->curline, rv, gv, bv);
778 	 * Account for number of bytes that we wrote into output V4L frame.
783 	frame->curline += 2;
785 	frame->deinterlace = Deinterlace_FillOddLines;
787 	if (frame_done || (frame->curline >= VIDEOSIZE_Y(frame->request)))
795 	struct usbvideo_frame *frame,
811 	v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
813 	/* The header tells us what sort of data is in this frame */
814 	switch (frame->header) {
834 	case 0x0368:	/* 640x480, best frame rate compression */
836 	case 0x0268:	/* 320x240, best frame rate compression */
838 	case 0x02EA:	/* 160x120, best frame rate compression */
840 		err("Unsupported mode $%04lx", frame->header);
844 		err("Strange frame->header=$%08lx", frame->header);
854 	if ((frame->curline + 1) >= data_h) {
856 			info("Reached line %d. (frame is done)", frame->curline);
875 	rw = (int)VIDEOSIZE_Y(frame->request) - (int)(frame->curline) - 1;
876 	RESTRICT_TO_RANGE(rw, 0, VIDEOSIZE_Y(frame->request)-1);
878 	for (i = 0; i < VIDEOSIZE_X(frame->request); i++) {
898 		RGB24_PUTPIXEL(frame, i, rw, rv, gv, bv); /* Done by deinterlacing now */
900 	frame->deinterlace = Deinterlace_FillEvenLines;
903 	 * Account for number of bytes that we wrote into output V4L frame.
908 	frame->curline += 2;
911 	if (frame->curline >= VIDEOSIZE_Y(frame->request)) {
914 			     VIDEOSIZE_Y(frame->request));
940 	struct usbvideo_frame *frame,
949 	v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
957 	if ((frame->curline + 1) >= data_h) {
959 			info("Reached line %d. (frame is done)", frame->curline);
982 	for (i = 0; i < VIDEOSIZE_X(frame->request); i++) {
1000 		RGB24_PUTPIXEL(frame, i, frame->curline, rv, gv, bv);
1002 	frame->deinterlace = Deinterlace_None;
1003 	frame->curline++;
1006 	if (frame->curline >= VIDEOSIZE_Y(frame->request)) {
1009 			     VIDEOSIZE_Y(frame->request));
1027 				   struct usbvideo_frame *frame)
1036 			if (frame->scanstate == ScanState_Scanning) {
1038 			} else if (frame->scanstate == ScanState_Lines) {
1045 						uvd, frame, &copylen);
1056 						newstate = ibmcam_model2_320x240_parse_lines(uvd, frame, &copylen);
1058 						newstate = ibmcam_model4_128x96_parse_lines(uvd, frame, &copylen);
1060 						newstate = ibmcam_parse_lines(uvd, frame, &copylen);
1063 					newstate = ibmcam_model3_parse_lines(uvd, frame, &copylen);
1065 					newstate = ibmcam_parse_lines(uvd, frame, &copylen);
1078 		frame->frameState = FrameState_Done;
1083 			frame->flags |= USBVIDEO_FRAME_FLAG_SOFTWARE_CONTRAST;
1087 	/* Update the frame's uncompressed length. */
1088 	frame->seqRead_Length += copylen;
1145  * This procedure roughly calculates the real frame rate based
1147  * slightly depending on lighting conditions, so that actual frame
1897  * Here we configure the frame rate and turn on the LED.
1993 	 * We have our own frame rate setting varying from 0 (slowest) to 6 (fastest).
1994 	 * The camera model 2 allows frame rate in range [0..0x1F] where 0 is also the
1998 	 * frame rate faster than allowed for the video size - see below:
3185 	unsigned short compression = 0;	/* 0=none, 7=best frame rate  */
3191 	/* Internal frame rate is controlled by f_rate value */