patch-2.4.5 linux/drivers/usb/pwc-misc.c

• Lines: 102
• Date: Tue May 22 10:25:36 2001
• Orig file: v2.4.4/linux/drivers/usb/pwc-misc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/drivers/usb/pwc-misc.c linux/drivers/usb/pwc-misc.c
@@ -0,0 +1,101 @@
+/* Linux driver for Philips webcam 
+   Various miscellaneous functions and tables.
+   (C) 1999-2001 Nemosoft Unv. (webcam@smcc.demon.nl)
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/  
+
+#include <linux/slab.h>
+
+#include "pwc.h"
+
+struct pwc_coord pwc_image_sizes[PSZ_MAX] = 
+{
+	{ 128,  96, 0 },
+	{ 160, 120, 0 },
+	{ 176, 144, 0 },
+	{ 320, 240, 0 },
+	{ 352, 288, 0 },
+	{ 640, 480, 0 },
+};
+
+/* x,y -> PSZ_ */
+int pwc_decode_size(struct pwc_device *pdev, int width, int height)
+{
+	int i, find;
+
+	/* Make sure we don't go beyond our max size */
+	if (width > pdev->view_max.x || height > pdev->view_max.y)
+		return -1;
+	/* Find the largest size supported by the camera that fits into the
+	   requested size. 
+	 */
+	find = -1;
+	for (i = 0; i < PSZ_MAX; i++) {
+		if (pdev->image_mask & (1 << i)) {
+			if (pwc_image_sizes[i].x <= width && pwc_image_sizes[i].y <= height)
+				find = i;
+		}
+	}
+	return find;
+}
+
+/* initialize variables depending on type */
+void pwc_construct(struct pwc_device *pdev)
+{
+	switch(pdev->type) {
+	case 645:
+	case 646:
+		pdev->view_min.x = 128;
+		pdev->view_min.y =  96;
+		pdev->view_max.x = 352;
+		pdev->view_max.y = 288;
+		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QCIF | 1 << PSZ_CIF;
+		pdev->vcinterface = 2;
+		pdev->vendpoint = 4;
+		pdev->frame_header_size = 0;
+		pdev->frame_trailer_size = 0;
+		break;
+	case 675:
+	case 680:
+	case 690:
+		pdev->view_min.x = 128;
+		pdev->view_min.y =  96;
+		pdev->view_max.x = 640;
+		pdev->view_max.y = 480;
+		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QSIF | 1 << PSZ_QCIF | 1 << PSZ_SIF | 1 << PSZ_CIF | 1 << PSZ_VGA;
+		pdev->vcinterface = 3;
+		pdev->vendpoint = 4;
+		pdev->frame_header_size = 0;
+		pdev->frame_trailer_size = 0;
+		break;
+	case 730:
+	case 740:
+		pdev->view_min.x = 160;
+		pdev->view_min.y = 120;
+		pdev->view_max.x = 640;
+		pdev->view_max.y = 480;
+		pdev->image_mask = 1 << PSZ_QSIF | 1 << PSZ_SIF | 1 << PSZ_VGA;
+		pdev->vcinterface = 3;
+		pdev->vendpoint = 5;
+		pdev->frame_header_size = TOUCAM_HEADER_SIZE;
+		pdev->frame_trailer_size = TOUCAM_TRAILER_SIZE;
+		break;
+	}
+	pdev->view_min.size = pdev->view_min.x * pdev->view_min.y;
+	pdev->view_max.size = pdev->view_max.x * pdev->view_max.y;
+}
+
+