[media] vivid-tpg: fix XV601/709 Y'CbCr encoding

For these encodings the quantization range should be ignored, since
there is only one possible Y'CbCr encoding.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c
index 097d299..4df755a 100644 (file)
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -509,10 +509,19 @@ static void color_to_ycbcr(struct tpg_data *tpg, int r, int g, int b,
 
        switch (tpg->real_ycbcr_enc) {
        case V4L2_YCBCR_ENC_601:
-       case V4L2_YCBCR_ENC_XV601:
        case V4L2_YCBCR_ENC_SYCC:
                rgb2ycbcr(full ? bt601_full : bt601, r, g, b, y_offset, y, cb, cr);
                break;
+       case V4L2_YCBCR_ENC_XV601:
+               /* Ignore quantization range, there is only one possible
+                * Y'CbCr encoding. */
+               rgb2ycbcr(bt601, r, g, b, 16, y, cb, cr);
+               break;
+       case V4L2_YCBCR_ENC_XV709:
+               /* Ignore quantization range, there is only one possible
+                * Y'CbCr encoding. */
+               rgb2ycbcr(rec709, r, g, b, 16, y, cb, cr);
+               break;
        case V4L2_YCBCR_ENC_BT2020:
                rgb2ycbcr(full ? bt2020_full : bt2020, r, g, b, y_offset, y, cb, cr);
                break;
@@ -535,7 +544,6 @@ static void color_to_ycbcr(struct tpg_data *tpg, int r, int g, int b,
                rgb2ycbcr(full ? smpte240m_full : smpte240m, r, g, b, y_offset, y, cb, cr);
                break;
        case V4L2_YCBCR_ENC_709:
-       case V4L2_YCBCR_ENC_XV709:
        default:
                rgb2ycbcr(full ? rec709_full : rec709, r, g, b, y_offset, y, cb, cr);
                break;
@@ -617,10 +625,19 @@ static void ycbcr_to_color(struct tpg_data *tpg, int y, int cb, int cr,
 
        switch (tpg->real_ycbcr_enc) {
        case V4L2_YCBCR_ENC_601:
-       case V4L2_YCBCR_ENC_XV601:
        case V4L2_YCBCR_ENC_SYCC:
                ycbcr2rgb(full ? bt601_full : bt601, y, cb, cr, y_offset, r, g, b);
                break;
+       case V4L2_YCBCR_ENC_XV601:
+               /* Ignore quantization range, there is only one possible
+                * Y'CbCr encoding. */
+               ycbcr2rgb(bt601, y, cb, cr, 16, r, g, b);
+               break;
+       case V4L2_YCBCR_ENC_XV709:
+               /* Ignore quantization range, there is only one possible
+                * Y'CbCr encoding. */
+               ycbcr2rgb(rec709, y, cb, cr, 16, r, g, b);
+               break;
        case V4L2_YCBCR_ENC_BT2020:
                ycbcr2rgb(full ? bt2020_full : bt2020, y, cb, cr, y_offset, r, g, b);
                break;
@@ -652,7 +669,6 @@ static void ycbcr_to_color(struct tpg_data *tpg, int y, int cb, int cr,
                ycbcr2rgb(full ? smpte240m_full : smpte240m, y, cb, cr, y_offset, r, g, b);
                break;
        case V4L2_YCBCR_ENC_709:
-       case V4L2_YCBCR_ENC_XV709:
        default:
                ycbcr2rgb(full ? rec709_full : rec709, y, cb, cr, y_offset, r, g, b);
                break;