V4L/DVB (3835): [PATCH] update pwc driver

Add v4l2 compatibility
Include the decompressor (legal problem has been resolv by Alan Cox)
Faster decoder and easier to maintain, optimize, ...
Can export to userland compressed stream
Support more cameras, lot of bugs are fixed.

Signed-off-by: Luc Saillard <luc@saillard.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 30 insertions, 37 deletions

diff --git a/drivers/media/video/pwc/pwc-misc.c b/drivers/media/video/pwc/pwc-misc.c
index 58fe7974799..589c687439d 100644
--- a/drivers/media/video/pwc/pwc-misc.c
+++ b/drivers/media/video/pwc/pwc-misc.c
@@ -1,7 +1,7 @@
 /* Linux driver for Philips webcam
    Various miscellaneous functions and tables.
    (C) 1999-2003 Nemosoft Unv.
-   (C) 2004      Luc Saillard (luc@saillard.org)
+   (C) 2004-2006 Luc Saillard (luc@saillard.org)
 
    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
    driver and thus may have bugs that are not present in the original version.
@@ -24,18 +24,17 @@
    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] =
+const 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 },
+	{ 128,  96, 0 }, /* sqcif */
+	{ 160, 120, 0 }, /* qsif */
+	{ 176, 144, 0 }, /* qcif */
+	{ 320, 240, 0 }, /* sif */
+	{ 352, 288, 0 }, /* cif */
+	{ 640, 480, 0 }, /* vga */
 };
 
 /* x,y -> PSZ_ */
@@ -52,7 +51,7 @@ int pwc_decode_size(struct pwc_device *pdev, int width, int height)
 	{
 		if (width > pdev->abs_max.x || height > pdev->abs_max.y)
 		{
-			Debug("VIDEO_PALETTE_RAW: going beyond abs_max.\n");
+			PWC_DEBUG_SIZE("VIDEO_PALETTE_RAW: going beyond abs_max.\n");
 			return -1;
 		}
 	}
@@ -60,7 +59,7 @@ int pwc_decode_size(struct pwc_device *pdev, int width, int height)
 	{
 		if (width > pdev->view_max.x || height > pdev->view_max.y)
 		{
-			Debug("VIDEO_PALETTE_ not RAW: going beyond view_max.\n");
+			PWC_DEBUG_SIZE("VIDEO_PALETTE_not RAW: going beyond view_max.\n");
 			return -1;
 		}
 	}
@@ -81,9 +80,8 @@ int pwc_decode_size(struct pwc_device *pdev, int width, int height)
 /* initialize variables depending on type and decompressor*/
 void pwc_construct(struct pwc_device *pdev)
 {
-	switch(pdev->type) {
-	case 645:
-	case 646:
+	if (DEVICE_USE_CODEC1(pdev->type)) {
+
 		pdev->view_min.x = 128;
 		pdev->view_min.y =  96;
 		pdev->view_max.x = 352;
@@ -95,10 +93,23 @@ void pwc_construct(struct pwc_device *pdev)
 		pdev->vendpoint = 4;
 		pdev->frame_header_size = 0;
 		pdev->frame_trailer_size = 0;
-		break;
-	case 675:
-	case 680:
-	case 690:
+
+	} else if (DEVICE_USE_CODEC3(pdev->type)) {
+
+		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->abs_max.x = 640;
+		pdev->abs_max.y = 480;
+		pdev->vcinterface = 3;
+		pdev->vendpoint = 5;
+		pdev->frame_header_size = TOUCAM_HEADER_SIZE;
+		pdev->frame_trailer_size = TOUCAM_TRAILER_SIZE;
+
+	} else /* if (DEVICE_USE_CODEC2(pdev->type)) */ {
+
 		pdev->view_min.x = 128;
 		pdev->view_min.y =  96;
 		/* Anthill bug #38: PWC always reports max size, even without PWCX */
@@ -111,30 +122,12 @@ void pwc_construct(struct pwc_device *pdev)
 		pdev->vendpoint = 4;
 		pdev->frame_header_size = 0;
 		pdev->frame_trailer_size = 0;
-		break;
-	case 720:
-	case 730:
-	case 740:
-	case 750:
-		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->abs_max.x = 640;
-		pdev->abs_max.y = 480;
-		pdev->vcinterface = 3;
-		pdev->vendpoint = 5;
-		pdev->frame_header_size = TOUCAM_HEADER_SIZE;
-		pdev->frame_trailer_size = TOUCAM_TRAILER_SIZE;
-		break;
 	}
-	Debug("type = %d\n",pdev->type);
 	pdev->vpalette = VIDEO_PALETTE_YUV420P; /* default */
 	pdev->view_min.size = pdev->view_min.x * pdev->view_min.y;
 	pdev->view_max.size = pdev->view_max.x * pdev->view_max.y;
 	/* length of image, in YUV format; always allocate enough memory. */
-	pdev->len_per_image = (pdev->abs_max.x * pdev->abs_max.y * 3) / 2;
+	pdev->len_per_image = PAGE_ALIGN((pdev->abs_max.x * pdev->abs_max.y * 3) / 2);
 }