V4L/DVB (10345): gspca - jpeg subdrivers: One quantization table per subdriver.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

8 files changed, 183 insertions, 180 deletions

diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
index 2de8906e566..de2e608bf5b 100644
--- a/drivers/media/video/gspca/conex.c
+++ b/drivers/media/video/gspca/conex.c
@@ -23,6 +23,7 @@
 
 #include "gspca.h"
 #define CONEX_CAM 1		/* special JPEG header */
+#define QUANT_VAL 0		/* quantization table */
 #include "jpeg.h"
 
 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
@@ -36,8 +37,6 @@ struct sd {
 	unsigned char brightness;
 	unsigned char contrast;
 	unsigned char colors;
-
-	unsigned char qindex;
 };
 
 /* V4L2 controls supported by the driver */
@@ -818,7 +817,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 	cam->cam_mode = vga_mode;
 	cam->nmodes = sizeof vga_mode / sizeof vga_mode[0];
 
-	sd->qindex = 0;			/* set the quantization */
 	sd->brightness = BRIGHTNESS_DEF;
 	sd->contrast = CONTRAST_DEF;
 	sd->colors = COLOR_DEF;
@@ -882,9 +880,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 					data, 0);
 
 		/* put the JPEG header in the new frame */
-		jpeg_put_header(gspca_dev, frame,
-				((struct sd *) gspca_dev)->qindex,
-				0x22);
+		jpeg_put_header(gspca_dev, frame, 0x22);
 		data += 2;
 		len -= 2;
 	}
diff --git a/drivers/media/video/gspca/jpeg.h b/drivers/media/video/gspca/jpeg.h
index d823b47bd4e..7d2df972002 100644
--- a/drivers/media/video/gspca/jpeg.h
+++ b/drivers/media/video/gspca/jpeg.h
@@ -24,171 +24,207 @@
  *
  */
 
-/* start of jpeg frame + quantization table */
-static const unsigned char quant[][0x88] = {
-/* index 0 - Q40*/
-    {
+/*
+ * generation options
+ *	CONEX_CAM	Conexant if present
+ *	QUANT_VAL	quantization table (0..8)
+ */
+
+/*
+ * JPEG header:
+ *	- start of jpeg frame
+ *	- quantization table
+ *	- huffman table
+ *	- start of SOF0
+ */
+static const u8 jpeg_head[] = {
 	0xff, 0xd8,			/* jpeg */
 	0xff, 0xdb, 0x00, 0x84,		/* DQT */
+#if QUANT_VAL == 0
+/* index 0 - Q40*/
 0,					/* quantization table part 1 */
-     20, 14, 15, 18, 15, 13, 20, 18, 16, 18, 23, 21, 20, 24, 30, 50,
-     33, 30, 28, 28, 30, 61, 44, 46, 36, 50, 73, 64, 76, 75, 71, 64,
-     70, 69, 80, 90, 115, 98, 80, 85, 109, 86, 69, 70, 100, 136, 101,
-     109,
-     119, 123, 129, 130, 129, 78, 96, 141, 151, 140, 125, 150, 115,
-     126, 129, 124,
+	0x14, 0x0e, 0x0f, 0x12, 0x0f, 0x0d, 0x14, 0x12,
+	0x10, 0x12, 0x17, 0x15, 0x14, 0x18, 0x1e, 0x32,
+	0x21, 0x1e, 0x1c, 0x1c, 0x1e, 0x3d, 0x2c, 0x2e,
+	0x24, 0x32, 0x49, 0x40, 0x4c, 0x4b, 0x47, 0x40,
+	0x46, 0x45, 0x50, 0x5a, 0x73, 0x62, 0x50, 0x55,
+	0x6d, 0x56, 0x45, 0x46, 0x64, 0x88, 0x65, 0x6d,
+	0x77, 0x7b, 0x81, 0x82, 0x81, 0x4e, 0x60, 0x8d,
+	0x97, 0x8c, 0x7d, 0x96, 0x73, 0x7e, 0x81, 0x7c,
 1,					/* quantization table part 2 */
-     21, 23, 23, 30, 26, 30, 59, 33, 33, 59, 124, 83, 70, 83, 124, 124,
-     124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
-     124, 124, 124,
-     124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
-     124, 124, 124,
-     124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
-     124, 124, 124},
+	0x15, 0x17, 0x17, 0x1e, 0x1a, 0x1e, 0x3b, 0x21,
+	0x21, 0x3b, 0x7c, 0x53, 0x46, 0x53, 0x7c, 0x0c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+	0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c,
+#elif QUANT_VAL == 1
 /* index 1 - Q50 */
-    {
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
-     16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40,
-     26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51,
-     56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80, 109, 81, 87,
-     95, 98, 103, 104, 103, 62, 77, 113, 121, 112, 100, 120, 92, 101,
-     103, 99,
+	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,
 1,
-    17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99,
-     99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
-     99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
-     99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99},
+	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,
+#elif QUANT_VAL == 2
 /* index 2 Q60 */
-    {
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
-     13, 9, 10, 11, 10, 8, 13, 11, 10, 11, 14, 14, 13, 15, 19, 32,
-     21, 19, 18, 18, 19, 39, 28, 30, 23, 32, 46, 41, 49, 48, 46, 41,
-     45, 44, 51, 58, 74, 62, 51, 54, 70, 55, 44, 45, 64, 87, 65, 70,
-     76, 78, 82, 83, 82, 50, 62, 90, 97, 90, 80, 96, 74, 81, 82, 79,
+	0x0d, 0x09, 0x0a, 0x0b, 0x0a, 0x08, 0x0d, 0x0b,
+	0x0a, 0x0b, 0x0e, 0x0e, 0x0d, 0x0f, 0x13, 0x20,
+	0x15, 0x13, 0x12, 0x12, 0x13, 0x27, 0x1c, 0x1e,
+	0x17, 0x20, 0x2e, 0x29, 0x31, 0x30, 0x2e, 0x29,
+	0x2d, 0x2c, 0x33, 0x3a, 0x4a, 0x3e, 0x33, 0x36,
+	0x46, 0x37, 0x2c, 0x2d, 0x40, 0x57, 0x41, 0x46,
+	0x4c, 0x4e, 0x52, 0x53, 0x52, 0x32, 0x3e, 0x5a,
+	0x61, 0x5a, 0x50, 0x60, 0x4a, 0x51, 0x52, 0x4f,
 1,
-     14, 14, 14, 19, 17, 19, 38, 21, 21, 38, 79, 53, 45, 53, 79, 79,
-     79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
-     79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
-     79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79},
+	0x0e, 0x0e, 0x0e, 0x13, 0x11, 0x13, 0x26, 0x15,
+	0x15, 0x26, 0x4f, 0x35, 0x2d, 0x35, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+	0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f,
+#elif QUANT_VAL == 3
 /* index 3 - Q70 */
-    {
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
-     10, 7, 7, 8, 7, 6, 10, 8, 8, 8, 11, 10, 10, 11, 14, 24,
-     16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31,
-     34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52,
-     57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59,
+	0x0a, 0x07, 0x07, 0x08, 0x07, 0x06, 0x0a, 0x08,
+	0x08, 0x08, 0x0b, 0x0a, 0x0a, 0x0b, 0x0e, 0x18,
+	0x10, 0x0e, 0x0d, 0x0d, 0x0e, 0x1d, 0x15, 0x16,
+	0x11, 0x18, 0x23, 0x1f, 0x25, 0x24, 0x22, 0x1f,
+	0x22, 0x21, 0x26, 0x2b, 0x37, 0x2f, 0x26, 0x29,
+	0x34, 0x29, 0x21, 0x22, 0x30, 0x41, 0x31, 0x34,
+	0x39, 0x3b, 0x3e, 0x3e, 0x3e, 0x25, 0x2e, 0x44,
+	0x49, 0x43, 0x3c, 0x48, 0x37, 0x3d, 0x3e, 0x3b,
 1,
-     10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59,
-     59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
-     59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
-     59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59},
+	0x0a, 0x0b, 0x0b, 0x0e, 0x0d, 0x0e, 0x1c, 0x10,
+	0x10, 0x1c, 0x3b, 0x28, 0x22, 0x28, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+	0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b, 0x3b,
+#elif QUANT_VAL == 4
 /* index 4 - Q80 */
-    {
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
-      6, 4, 5, 6, 5, 4, 6, 6, 5, 6, 7, 7, 6, 8, 10, 16,
-     10, 10, 9, 9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20,
-     22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35,
-     38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40,
+	0x06, 0x04, 0x05, 0x06, 0x05, 0x04, 0x06, 0x06,
+	0x05, 0x06, 0x07, 0x07, 0x06, 0x08, 0x0a, 0x10,
+	0x0a, 0x0a, 0x09, 0x09, 0x0a, 0x14, 0x0e, 0x0f,
+	0x0c, 0x10, 0x17, 0x14, 0x18, 0x18, 0x17, 0x14,
+	0x16, 0x16, 0x1a, 0x1d, 0x25, 0x1f, 0x1a, 0x1b,
+	0x23, 0x1c, 0x16, 0x16, 0x20, 0x2c, 0x20, 0x23,
+	0x26, 0x27, 0x29, 0x2a, 0x29, 0x19, 0x1f, 0x2d,
+	0x30, 0x2d, 0x28, 0x30, 0x25, 0x28, 0x29, 0x28,
 1,
-      7, 7, 7, 10, 8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40,
-     40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-     40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-     40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40},
+	0x07, 0x07, 0x07, 0x0a, 0x08, 0x0a, 0x13, 0x0a,
+	0x0a, 0x13, 0x28, 0x1a, 0x16, 0x1a, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+	0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
+#elif QUANT_VAL == 5
 /* index 5 - Q85 */
-    {
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
-     5, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 5, 5, 6, 7, 12,
-     8, 7, 7, 7, 7, 15, 11, 11, 9, 12, 17, 15, 18, 18, 17, 15,
-     17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26,
-     29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30, 36, 28, 30, 31, 30,
+	0x05, 0x03, 0x04, 0x04, 0x04, 0x03, 0x05, 0x04,
+	0x04, 0x04, 0x05, 0x05, 0x05, 0x06, 0x07, 0x0c,
+	0x08, 0x07, 0x07, 0x07, 0x07, 0x0f, 0x0b, 0x0b,
+	0x09, 0x0c, 0x11, 0x0f, 0x12, 0x12, 0x11, 0x0f,
+	0x11, 0x11, 0x13, 0x16, 0x1c, 0x17, 0x13, 0x14,
+	0x1a, 0x15, 0x11, 0x11, 0x18, 0x21, 0x18, 0x1a,
+	0x1d, 0x1d, 0x1f, 0x1f, 0x1f, 0x13, 0x17, 0x22,
+	0x24, 0x22, 0x1e, 0x24, 0x1c, 0x1e, 0x1f, 0x1e,
 1,
-     5, 5, 5, 7, 6, 7, 14, 8, 8, 14, 30, 20, 17, 20, 30, 30,
-     30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
-     30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
-     30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},
+	0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x0e, 0x08,
+	0x08, 0x0e, 0x1e, 0x14, 0x11, 0x14, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+	0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
+#elif QUANT_VAL == 6
 /* index 6 - 86 */
-{
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
 	0x04, 0x03, 0x03, 0x04, 0x03, 0x03, 0x04, 0x04,
 	0x04, 0x04, 0x05, 0x05, 0x04, 0x05, 0x07, 0x0B,
-	0x07, 0x07, 0x06, 0x06, 0x07, 0x0E, 0x0A, 0x0A,
-	0x08, 0x0B, 0x10, 0x0E, 0x11, 0x11, 0x10, 0x0E,
-	0x10, 0x0F, 0x12, 0x14, 0x1A, 0x16, 0x12, 0x13,
-	0x18, 0x13, 0x0F, 0x10, 0x16, 0x1F, 0x17, 0x18,
-	0x1B, 0x1B, 0x1D, 0x1D, 0x1D, 0x11, 0x16, 0x20,
-	0x22, 0x1F, 0x1C, 0x22, 0x1A, 0x1C, 0x1D, 0x1C,
+	0x07, 0x07, 0x06, 0x06, 0x07, 0x0e, 0x0a, 0x0a,
+	0x08, 0x0B, 0x10, 0x0e, 0x11, 0x11, 0x10, 0x0e,
+	0x10, 0x0f, 0x12, 0x14, 0x1a, 0x16, 0x12, 0x13,
+	0x18, 0x13, 0x0f, 0x10, 0x16, 0x1f, 0x17, 0x18,
+	0x1b, 0x1b, 0x1d, 0x1d, 0x1d, 0x11, 0x16, 0x20,
+	0x22, 0x1f, 0x1c, 0x22, 0x1a, 0x1c, 0x1d, 0x1c,
 1,
 	0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x0D, 0x07,
-	0x07, 0x0D, 0x1C, 0x12, 0x10, 0x12, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
-	0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
- },
+	0x07, 0x0D, 0x1c, 0x12, 0x10, 0x12, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+	0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
+#elif QUANT_VAL == 7
 /* index 7 - 88 */
-{
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
 	0x04, 0x03, 0x03, 0x03, 0x03, 0x02, 0x04, 0x03,
-	0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x06, 0x0A,
+	0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x06, 0x0a,
 	0x06, 0x06, 0x05, 0x05, 0x06, 0x0C, 0x08, 0x09,
-	0x07, 0x0A, 0x0E, 0x0C, 0x0F, 0x0E, 0x0E, 0x0C,
-	0x0D, 0x0D, 0x0F, 0x11, 0x16, 0x13, 0x0F, 0x10,
-	0x15, 0x11, 0x0D, 0x0D, 0x13, 0x1A, 0x13, 0x15,
-	0x17, 0x18, 0x19, 0x19, 0x19, 0x0F, 0x12, 0x1B,
-	0x1D, 0x1B, 0x18, 0x1D, 0x16, 0x18, 0x19, 0x18,
+	0x07, 0x0a, 0x0e, 0x0c, 0x0f, 0x0e, 0x0e, 0x0c,
+	0x0d, 0x0d, 0x0f, 0x11, 0x16, 0x13, 0x0f, 0x10,
+	0x15, 0x11, 0x0d, 0x0d, 0x13, 0x1a, 0x13, 0x15,
+	0x17, 0x18, 0x19, 0x19, 0x19, 0x0f, 0x12, 0x1b,
+	0x1d, 0x1b, 0x18, 0x1d, 0x16, 0x18, 0x19, 0x18,
 1,
 	0x04, 0x04, 0x04, 0x06, 0x05, 0x06, 0x0B, 0x06,
-	0x06, 0x0B, 0x18, 0x10, 0x0D, 0x10, 0x18, 0x18,
+	0x06, 0x0B, 0x18, 0x10, 0x0d, 0x10, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-},
+#elif QUANT_VAL == 8
 /* index 8 - ?? */
-{
-	0xff, 0xd8,
-	0xff, 0xdb, 0x00, 0x84,		/* DQT */
 0,
 	0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
 	0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x05,
 	0x03, 0x03, 0x03, 0x03, 0x03, 0x06, 0x04, 0x05,
 	0x04, 0x05, 0x07, 0x06, 0x08, 0x08, 0x07, 0x06,
-	0x07, 0x07, 0x08, 0x09, 0x0C, 0x0A, 0x08, 0x09,
-	0x0B, 0x09, 0x07, 0x07, 0x0A, 0x0E, 0x0A, 0x0B,
-	0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x08, 0x0A, 0x0E,
-	0x0F, 0x0E, 0x0D, 0x0F, 0x0C, 0x0D, 0x0D, 0x0C,
+	0x07, 0x07, 0x08, 0x09, 0x0c, 0x0a, 0x08, 0x09,
+	0x0B, 0x09, 0x07, 0x07, 0x0a, 0x0e, 0x0a, 0x0b,
+	0x0c, 0x0c, 0x0d, 0x0d, 0x0d, 0x08, 0x0a, 0x0e,
+	0x0f, 0x0e, 0x0d, 0x0f, 0x0c, 0x0d, 0x0d, 0x0c,
 1,
 	0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x06, 0x03,
-	0x03, 0x06, 0x0C, 0x08, 0x07, 0x08, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
-	0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C
-}
-};
+	0x03, 0x06, 0x0c, 0x08, 0x07, 0x08, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+#else
+#error "Invalid quantization table"
+#endif
 
-/* huffman table + start of SOF0 */
-static unsigned char huffman[] = {
+/* huffman table */
 	0xff, 0xc4, 0x01, 0xa2,
 	0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
 	0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -260,7 +296,7 @@ static unsigned char huffman[] = {
  */
 
 /* end of header */
-static unsigned char eoh[] = {
+static u8 eoh[] = {
 			0x00,		/* quant Y */
 		0x02, 0x11, 0x01,	/* samples CbCr - quant CbCr */
 		0x03, 0x11, 0x01,
@@ -273,17 +309,14 @@ static unsigned char eoh[] = {
 /* -- output the JPEG header -- */
 static void jpeg_put_header(struct gspca_dev *gspca_dev,
 			    struct gspca_frame *frame,
-			    int qindex,
 			    int samplesY)
 {
 #ifndef CONEX_CAM
-	unsigned char tmpbuf[8];
+	u8 tmpbuf[8];
 #endif
 
 	gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
-			(unsigned char *) quant[qindex], sizeof quant[0]);
-	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
-			(unsigned char *) huffman, sizeof huffman);
+			jpeg_head, sizeof jpeg_head);
 #ifndef CONEX_CAM
 	tmpbuf[0] = gspca_dev->height >> 8;
 	tmpbuf[1] = gspca_dev->height & 0xff;
diff --git a/drivers/media/video/gspca/mars.c b/drivers/media/video/gspca/mars.c
index 477441e22ba..54c68ea7e54 100644
--- a/drivers/media/video/gspca/mars.c
+++ b/drivers/media/video/gspca/mars.c
@@ -22,6 +22,7 @@
 #define MODULE_NAME "mars"
 
 #include "gspca.h"
+#define QUANT_VAL 1		/* quantization table */
 #include "jpeg.h"
 
 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
@@ -31,8 +32,6 @@ MODULE_LICENSE("GPL");
 /* specific webcam descriptor */
 struct sd {
 	struct gspca_dev gspca_dev;	/* !! must be the first item */
-
-	char qindex;
 };
 
 /* V4L2 controls supported by the driver */
@@ -117,13 +116,11 @@ static void bulk_w(struct gspca_dev *gspca_dev,
 static int sd_config(struct gspca_dev *gspca_dev,
 			const struct usb_device_id *id)
 {
-	struct sd *sd = (struct sd *) gspca_dev;
 	struct cam *cam;
 
 	cam = &gspca_dev->cam;
 	cam->cam_mode = vga_mode;
 	cam->nmodes = ARRAY_SIZE(vga_mode);
-	sd->qindex = 1;			/* set the quantization table */
 	return 0;
 }
 
@@ -345,7 +342,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 			__u8 *data,			/* isoc packet */
 			int len)			/* iso packet length */
 {
-	struct sd *sd = (struct sd *) gspca_dev;
 	int p;
 
 	if (len < 6) {
@@ -368,8 +364,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 							frame, data, 0);
 
 				/* put the JPEG header */
-				jpeg_put_header(gspca_dev, frame,
-						sd->qindex, 0x21);
+				jpeg_put_header(gspca_dev, frame, 0x21);
 				data += 16;
 				len -= 16;
 				break;
diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index 755ca302368..51d68d35aa7 100644
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -22,6 +22,7 @@
 #define MODULE_NAME "sonixj"
 
 #include "gspca.h"
+#define QUANT_VAL 4		/* quantization table */
 #include "jpeg.h"
 
 #define V4L2_CID_INFRARED (V4L2_CID_PRIVATE_BASE + 0)
@@ -49,7 +50,6 @@ struct sd {
 	__s8 ag_cnt;
 #define AG_CNT_START 13
 
-	__u8 qindex;
 	__u8 bridge;
 #define BRIDGE_SN9C102P 0
 #define BRIDGE_SN9C105 1
@@ -1025,7 +1025,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 	sd->sensor = id->driver_info >> 8;
 	sd->i2c_base = id->driver_info;
 
-	sd->qindex = 4;			/* set the quantization table */
 	sd->brightness = BRIGHTNESS_DEF;
 	sd->contrast = CONTRAST_DEF;
 	sd->colors = COLOR_DEF;
@@ -1549,7 +1548,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 	if (gspca_dev->last_packet_type == LAST_PACKET) {
 
 		/* put the JPEG 422 header */
-		jpeg_put_header(gspca_dev, frame, sd->qindex, 0x21);
+		jpeg_put_header(gspca_dev, frame, 0x21);
 	}
 	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 }
diff --git a/drivers/media/video/gspca/spca500.c b/drivers/media/video/gspca/spca500.c
index 5450c3c4274..e00f3b53bdf 100644
--- a/drivers/media/video/gspca/spca500.c
+++ b/drivers/media/video/gspca/spca500.c
@@ -22,6 +22,7 @@
 #define MODULE_NAME "spca500"
 
 #include "gspca.h"
+#define QUANT_VAL 5		/* quantization table */
 #include "jpeg.h"
 
 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
@@ -39,7 +40,6 @@ struct sd {
 	unsigned char contrast;
 	unsigned char colors;
 
-	char qindex;
 	char subtype;
 #define AgfaCl20 0
 #define AiptekPocketDV 1
@@ -637,7 +637,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 		cam->cam_mode = sif_mode;
 		cam->nmodes = ARRAY_SIZE(sif_mode);
 	}
-	sd->qindex = 5;
 	sd->brightness = BRIGHTNESS_DEF;
 	sd->contrast = CONTRAST_DEF;
 	sd->colors = COLOR_DEF;
@@ -900,7 +899,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 					ffd9, 2);
 
 		/* put the JPEG header in the new frame */
-		jpeg_put_header(gspca_dev, frame, sd->qindex, 0x22);
+		jpeg_put_header(gspca_dev, frame, 0x22);
 
 		data += SPCA500_OFFSET_DATA;
 		len -= SPCA500_OFFSET_DATA;
diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c
index ba31eb31865..d1d54edd80b 100644
--- a/drivers/media/video/gspca/stk014.c
+++ b/drivers/media/video/gspca/stk014.c
@@ -21,6 +21,8 @@
 #define MODULE_NAME "stk014"
 
 #include "gspca.h"
+#define QUANT_VAL 7		/* quantization table */
+				/* <= 4 KO - 7: good (enough!) */
 #include "jpeg.h"
 
 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
@@ -37,9 +39,6 @@ struct sd {
 	unsigned char lightfreq;
 };
 
-/* global parameters */
-static int sd_quant = 7;		/* <= 4 KO - 7: good (enough!) */
-
 /* V4L2 controls supported by the driver */
 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
@@ -418,7 +417,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 					ffd9, 2);
 
 		/* put the JPEG 411 header */
-		jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
+		jpeg_put_header(gspca_dev, frame, 0x22);
 
 		/* beginning of the frame */
 #define STKHDRSZ 12
@@ -575,6 +574,3 @@ static void __exit sd_mod_exit(void)
 
 module_init(sd_mod_init);
 module_exit(sd_mod_exit);
-
-module_param_named(quant, sd_quant, int, 0644);
-MODULE_PARM_DESC(quant, "Quantization index (0..8)");
diff --git a/drivers/media/video/gspca/sunplus.c b/drivers/media/video/gspca/sunplus.c
index d9c9c440f02..2c0b6c3c876 100644
--- a/drivers/media/video/gspca/sunplus.c
+++ b/drivers/media/video/gspca/sunplus.c
@@ -22,6 +22,7 @@
 #define MODULE_NAME "sunplus"
 
 #include "gspca.h"
+#define QUANT_VAL 5		/* quantization table */
 #include "jpeg.h"
 
 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
@@ -40,7 +41,6 @@ struct sd {
 	unsigned char colors;
 	unsigned char autogain;
 
-	char qindex;
 	char bridge;
 #define BRIDGE_SPCA504 0
 #define BRIDGE_SPCA504B 1
@@ -849,7 +849,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 		cam->nmodes = sizeof vga_mode2 / sizeof vga_mode2[0];
 		break;
 	}
-	sd->qindex = 5;			/* set the quantization table */
 	sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
 	sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
 	sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
@@ -1154,9 +1153,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 					ffd9, 2);
 
 		/* put the JPEG header in the new frame */
-		jpeg_put_header(gspca_dev, frame,
-				((struct sd *) gspca_dev)->qindex,
-				0x22);
+		jpeg_put_header(gspca_dev, frame, 0x22);
 	}
 
 	/* add 0x00 after 0xff */
diff --git a/drivers/media/video/gspca/zc3xx.c b/drivers/media/video/gspca/zc3xx.c
index 2482f9163ad..226aafc9688 100644
--- a/drivers/media/video/gspca/zc3xx.c
+++ b/drivers/media/video/gspca/zc3xx.c
@@ -31,6 +31,7 @@ MODULE_LICENSE("GPL");
 
 static int force_sensor = -1;
 
+#define QUANT_VAL 1		/* quantization table */
 #include "jpeg.h"
 #include "zc3xx-reg.h"
 
@@ -45,7 +46,6 @@ struct sd {
 	__u8 lightfreq;
 	__u8 sharpness;
 
-	char qindex;
 	signed char sensor;		/* Type of image sensor chip */
 /* !! values used in different tables */
 #define SENSOR_CS2102 0
@@ -6536,7 +6536,6 @@ static void setquality(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 	struct usb_device *dev = gspca_dev->dev;
-	__u8 quality;
 	__u8 frxt;
 
 	switch (sd->sensor) {
@@ -6547,26 +6546,18 @@ static void setquality(struct gspca_dev *gspca_dev)
 		return;
 	}
 /*fixme: is it really 0008 0007 0018 for all other sensors? */
-	quality = sd->qindex;
-	reg_w(dev, quality, 0x0008);
+	reg_w(dev, QUANT_VAL, 0x0008);
 	frxt = 0x30;
 	reg_w(dev, frxt, 0x0007);
-	switch (quality) {
-	case 0:
-	case 1:
-	case 2:
-		frxt = 0xff;
-		break;
-	case 3:
-		frxt = 0xf0;
-		break;
-	case 4:
-		frxt = 0xe0;
-		break;
-	case 5:
-		frxt = 0x20;
-		break;
-	}
+#if QUANT_VAL == 0 || QUANT_VAL == 1 || QUANT_VAL == 2
+	frxt = 0xff;
+#elif QUANT_VAL == 3
+	frxt = 0xf0;
+#elif QUANT_VAL == 4
+	frxt = 0xe0;
+#else
+	frxt = 0x20;
+#endif
 	reg_w(dev, frxt, 0x0018);
 }
 
@@ -7156,7 +7147,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 		cam->cam_mode = sif_mode;
 		cam->nmodes = ARRAY_SIZE(sif_mode);
 	}
-	sd->qindex = 1;
 	sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
 	sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
 	sd->gamma = gamma[(int) sd->sensor];
@@ -7358,9 +7348,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 		frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
 					data, 0);
 		/* put the JPEG header in the new frame */
-		jpeg_put_header(gspca_dev, frame,
-				((struct sd *) gspca_dev)->qindex,
-				0x21);
+		jpeg_put_header(gspca_dev, frame, 0x21);
 		/* remove the webcam's header:
 		 * ff d8 ff fe 00 0e 00 00 ss ss 00 01 ww ww hh hh pp pp
 		 *	- 'ss ss' is the frame sequence number (BE)