427 	struct usbvision_frame *frame;  in usbvision_find_header()  local
430 	frame = usbvision->cur_frame;  in usbvision_find_header()
432 	while (scratch_get_header(usbvision, &frame->isoc_header) == USBVISION_HEADER_LENGTH) {  in usbvision_find_header()
435 				frame->isoc_header.magic_2,  in usbvision_find_header()
436 				frame->isoc_header.magic_1,  in usbvision_find_header()
437 				frame->isoc_header.header_length,  in usbvision_find_header()
438 				frame->isoc_header.frame_num,  in usbvision_find_header()
439 				frame->isoc_header.frame_phase,  in usbvision_find_header()
440 				frame->isoc_header.frame_latency,  in usbvision_find_header()
441 				frame->isoc_header.data_format,  in usbvision_find_header()
442 				frame->isoc_header.format_param,  in usbvision_find_header()
443 				frame->isoc_header.frame_width,  in usbvision_find_header()
444 				frame->isoc_header.frame_height);  in usbvision_find_header()
447 			if (frame->isoc_header.format_param & 0x80) {  in usbvision_find_header()
460 		frame->frmwidth = frame->isoc_header.frame_width * usbvision->stretch_width;  in usbvision_find_header()
461 		frame->frmheight = frame->isoc_header.frame_height * usbvision->stretch_height;  in usbvision_find_header()
462 		frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth) >> 3;  in usbvision_find_header()
470 	if (frame->isoc_header.data_format == ISOC_MODE_COMPRESS) {  in usbvision_find_header()
473 			if (((usbvision->last_isoc_frame_num + 1) % 32) != frame->isoc_header.frame_num) {  in usbvision_find_header()
475 				PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isoc_header.frame_num);  in usbvision_find_header()
480 		usbvision->last_isoc_frame_num = frame->isoc_header.frame_num;  in usbvision_find_header()
483 	frame->scanstate = scan_state_lines;  in usbvision_find_header()
484 	frame->curline = 0;  in usbvision_find_header()
492 	volatile struct usbvision_frame *frame;  in usbvision_parse_lines_422()  local
501 	frame  = usbvision->cur_frame;  in usbvision_parse_lines_422()
502 	f = frame->data + (frame->v4l2_linesize * frame->curline);  in usbvision_parse_lines_422()
505 	len = (frame->isoc_header.frame_width * 2) + 5;  in usbvision_parse_lines_422()
507 		PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);  in usbvision_parse_lines_422()
511 	if ((frame->curline + 1) >= frame->frmheight)  in usbvision_parse_lines_422()
514 	bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;  in usbvision_parse_lines_422()
516 	clipmask_index = frame->curline * MAX_FRAME_WIDTH;  in usbvision_parse_lines_422()
519 	for (i = 0; i < frame->frmwidth; i += (2 * usbvision->stretch_width)) {  in usbvision_parse_lines_422()
522 		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_422()
527 			switch (frame->v4l2_format.format) {  in usbvision_parse_lines_422()
556 		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_422()
561 			switch (frame->v4l2_format.format) {  in usbvision_parse_lines_422()
591 	frame->curline += usbvision->stretch_height;  in usbvision_parse_lines_422()
592 	*pcopylen += frame->v4l2_linesize * usbvision->stretch_height;  in usbvision_parse_lines_422()
594 	if (frame->curline >= frame->frmheight)  in usbvision_parse_lines_422()
699 	struct usbvision_frame *frame;  in usbvision_parse_compress()  local
709 	frame = usbvision->cur_frame;  in usbvision_parse_compress()
710 	image_size = frame->frmwidth * frame->frmheight;  in usbvision_parse_compress()
711 	if ((frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||  in usbvision_parse_compress()
712 	    (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420)) {       /* this is a planar format */  in usbvision_parse_compress()
714 		f = frame->data + (frame->width * frame->curline);  in usbvision_parse_compress()
716 		f = frame->data + (frame->v4l2_linesize * frame->curline);  in usbvision_parse_compress()
718 	if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { /* initialise u and v pointers */  in usbvision_parse_compress()
720 		u = frame->data  in usbvision_parse_compress()
722 			+ (frame->frmwidth >> 1) * frame->curline;  in usbvision_parse_compress()
724 	} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {  in usbvision_parse_compress()
725 		v = frame->data + image_size + ((frame->curline * (frame->width)) >> 2);  in usbvision_parse_compress()
729 	if (frame->curline == 0)  in usbvision_parse_compress()
746 	if (frame->curline != (int)strip_header[2]) {  in usbvision_parse_compress()
764 		Y = usbvision->intra_frame_buffer + frame->frmwidth * frame->curline;  in usbvision_parse_compress()
765 		U = usbvision->intra_frame_buffer + image_size + (frame->frmwidth / 2) * (frame->curline / 2);  in usbvision_parse_compress()
766 …V = usbvision->intra_frame_buffer + image_size / 4 * 5 + (frame->frmwidth / 2) * (frame->curline /…  in usbvision_parse_compress()
771 	clipmask_index = frame->curline * MAX_FRAME_WIDTH;  in usbvision_parse_compress()
775 	idx_end = frame->frmwidth;  in usbvision_parse_compress()
786 	if (frame->curline % 2)  in usbvision_parse_compress()
797 		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_compress()
800 		} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {  in usbvision_parse_compress()
806 		} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {  in usbvision_parse_compress()
808 			if (!((idx & 0x01) | (frame->curline & 0x01))) {  in usbvision_parse_compress()
816 			switch (frame->v4l2_format.format) {  in usbvision_parse_compress()
848 	if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420)  in usbvision_parse_compress()
849 		*pcopylen += frame->v4l2_linesize;  in usbvision_parse_compress()
851 		*pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;  in usbvision_parse_compress()
853 	frame->curline += 1;  in usbvision_parse_compress()
855 	if (frame->curline >= frame->frmheight)  in usbvision_parse_compress()
873 	struct usbvision_frame *frame;  in usbvision_parse_lines_420()  local
890 	frame  = usbvision->cur_frame;  in usbvision_parse_lines_420()
891 	f_even = frame->data + (frame->v4l2_linesize * frame->curline);  in usbvision_parse_lines_420()
892 	f_odd  = f_even + frame->v4l2_linesize * usbvision->stretch_height;  in usbvision_parse_lines_420()
897 	bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;  in usbvision_parse_lines_420()
899 	clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;  in usbvision_parse_lines_420()
902 	pixel_per_line = frame->isoc_header.frame_width;  in usbvision_parse_lines_420()
909 	if ((frame->curline + 1) >= frame->frmheight)  in usbvision_parse_lines_420()
935 			if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_420()
945 				switch (frame->v4l2_format.format) {  in usbvision_parse_lines_420()
978 			if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_420()
988 				switch (frame->v4l2_format.format) {  in usbvision_parse_lines_420()
1023 			if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_420()
1033 				switch (frame->v4l2_format.format) {  in usbvision_parse_lines_420()
1066 			if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {  in usbvision_parse_lines_420()
1076 				switch (frame->v4l2_format.format) {  in usbvision_parse_lines_420()
1122 	frame->curline += 2 * usbvision->stretch_height;  in usbvision_parse_lines_420()
1123 	*pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;  in usbvision_parse_lines_420()
1125 	if (frame->curline >= frame->frmheight)  in usbvision_parse_lines_420()
1140 	struct usbvision_frame *frame;  in usbvision_parse_data()  local
1145 	frame = usbvision->cur_frame;  in usbvision_parse_data()
1152 			if (frame->scanstate == scan_state_scanning) {  in usbvision_parse_data()
1154 			} else if (frame->scanstate == scan_state_lines) {  in usbvision_parse_data()
1171 		frame->grabstate = frame_state_done;  in usbvision_parse_data()
1172 		v4l2_get_timestamp(&(frame->timestamp));  in usbvision_parse_data()
1173 		frame->sequence = usbvision->frame_num;  in usbvision_parse_data()
1176 		list_move_tail(&(frame->frame), &usbvision->outqueue);  in usbvision_parse_data()
1188 		frame->grabstate = frame_state_grabbing;  in usbvision_parse_data()
1192 	frame->scanlength += copylen;  in usbvision_parse_data()
1321 						  frame);  in usbvision_isoc_irq()
1798 		usbvision->frame[i].index = i;  in usbvision_frames_alloc()
1799 		usbvision->frame[i].grabstate = frame_state_unused;  in usbvision_frames_alloc()
1800 		usbvision->frame[i].data = usbvision->fbuf +  in usbvision_frames_alloc()
1807 		usbvision->frame[i].width = usbvision->curwidth;  in usbvision_frames_alloc()
1808 		usbvision->frame[i].height = usbvision->curheight;  in usbvision_frames_alloc()
1809 		usbvision->frame[i].bytes_read = 0;  in usbvision_frames_alloc()
1844 		usbvision->frame[i].grabstate = frame_state_unused;  in usbvision_empty_framequeues()
1845 		usbvision->frame[i].bytes_read = 0;  in usbvision_empty_framequeues()