[media] gspca - sonixj: Have the same JPEG quality for encoding and decoding

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

diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index 21f0330..d465022 100644 (file)
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -63,7 +63,6 @@ struct sd {
 #define QUALITY_MIN 60
 #define QUALITY_MAX 95
 #define QUALITY_DEF 80
-       u8 jpegqual;                    /* webcam quality */
 
        u8 reg01;
        u8 reg17;
@@ -1786,7 +1785,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
 
        sd->ag_cnt = -1;
        sd->quality = QUALITY_DEF;
-       sd->jpegqual = 80;
 
        return 0;
 }
@@ -2273,18 +2271,12 @@ static void setfreq(struct gspca_dev *gspca_dev)
 static void setjpegqual(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
-       int i, sc;
 
-       if (sd->jpegqual < 50)
-               sc = 5000 / sd->jpegqual;
-       else
-               sc = 200 - sd->jpegqual * 2;
+       jpeg_set_qual(sd->jpeg_hdr, sd->quality);
 #if USB_BUF_SZ < 64
 #error "No room enough in usb_buf for quantization table"
 #endif
-       for (i = 0; i < 64; i++)
-               gspca_dev->usb_buf[i] =
-                       (jpeg_head[JPEG_QT0_OFFSET + i] * sc + 50) / 100;
+       memcpy(gspca_dev->usb_buf, &sd->jpeg_hdr[JPEG_QT0_OFFSET], 64);
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
@@ -2292,9 +2284,7 @@ static void setjpegqual(struct gspca_dev *gspca_dev)
                        0x0100, 0,
                        gspca_dev->usb_buf, 64,
                        500);
-       for (i = 0; i < 64; i++)
-               gspca_dev->usb_buf[i] =
-                       (jpeg_head[JPEG_QT1_OFFSET + i] * sc + 50) / 100;
+       memcpy(gspca_dev->usb_buf, &sd->jpeg_hdr[JPEG_QT1_OFFSET], 64);
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
@@ -2340,7 +2330,6 @@ static int sd_start(struct gspca_dev *gspca_dev)
        /* create the JPEG header */
        jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
                        0x21);          /* JPEG 422 */
-       jpeg_set_qual(sd->jpeg_hdr, sd->quality);
 
        /* initialize the bridge */
        sn9c1xx = sn_tb[sd->sensor];
@@ -2901,7 +2890,7 @@ static int sd_set_jcomp(struct gspca_dev *gspca_dev,
        else
                sd->quality = jcomp->quality;
        if (gspca_dev->streaming)
-               jpeg_set_qual(sd->jpeg_hdr, sd->quality);
+               setjpegqual(gspca_dev);
        return 0;
 }