gallium/auxiliary/vl: Add BT.709 full csc matrix

Used for converting from full range YUV.

Reviewed-by: Leo Liu <leo.liu@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24788>

src/gallium/auxiliary/vl/vl_csc.c

@@ -119,6 +119,18 @@ static const vl_csc_matrix bt_709 =
    { 1.0f,  1.816f,  0.0f,   0.0f, }
 };
 
+/*
+ * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
+ * Y, Cb, and Cr are in [0,255]
+ * R, G, and B are in [16,235]
+ */
+static const vl_csc_matrix bt_709_full =
+{
+   { 0.859f,  0.0f,    1.352f, 0.0625f, },
+   { 0.859f, -0.161f, -0.402f, 0.0625f, },
+   { 0.859f,  1.594f,  0.0f,   0.0625f, }
+};
+
 /*
  * Converts SMPTE 240M YCbCr pixels to RGB pixels where:
  * Y is in [16,235], Cb and Cr are in [16,240]
@@ -193,6 +205,9 @@ void vl_csc_get_matrix(enum VL_CSC_COLOR_STANDARD cs,
       case VL_CSC_COLOR_STANDARD_BT_709:
          cstd = &bt_709;
          break;
+      case VL_CSC_COLOR_STANDARD_BT_709_FULL:
+         cstd = &bt_709_full;
+         break;
       case VL_CSC_COLOR_STANDARD_SMPTE_240M:
          cstd = &smpte240m;
          break;

src/gallium/auxiliary/vl/vl_csc.h

@@ -45,6 +45,7 @@ enum VL_CSC_COLOR_STANDARD
    VL_CSC_COLOR_STANDARD_IDENTITY,
    VL_CSC_COLOR_STANDARD_BT_601,
    VL_CSC_COLOR_STANDARD_BT_709,
+   VL_CSC_COLOR_STANDARD_BT_709_FULL,
    VL_CSC_COLOR_STANDARD_SMPTE_240M,
    VL_CSC_COLOR_STANDARD_BT_709_REV
 };