render: extract out yuv->rgb coefs

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Sean V Kelley <seanvk@posteo.de>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/i965_yuv_coefs.c b/src/i965_yuv_coefs.c
new file mode 100644
index 0000000..db817b4
--- /dev/null
+++ b/src/i965_yuv_coefs.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "i965_yuv_coefs.h"
+
+static const float yuv_to_rgb_bt601[] = {
+    1.164,		0,	1.596,		-0.06275,
+    1.164,		-0.392,	-0.813,		-0.50196,
+    1.164,		2.017,	0,		-0.50196,
+};
+
+static const float yuv_to_rgb_bt709[] = {
+    1.164,		0,	1.793,		-0.06275,
+    1.164,		-0.213,	-0.533,		-0.50196,
+    1.164,		2.112,	0,		-0.50196,
+};
+
+static const float yuv_to_rgb_smpte_240[] = {
+    1.164,		0,	1.794,		-0.06275,
+    1.164,		-0.258,	-0.5425,	-0.50196,
+    1.164,		2.078,	0,		-0.50196,
+};
+
+VAProcColorStandardType i915_filter_to_color_standard (unsigned int filter) {
+    switch (filter & VA_SRC_COLOR_MASK) {
+    case VA_SRC_BT601:
+        return VAProcColorStandardBT601;
+    case VA_SRC_BT709:
+        return VAProcColorStandardBT709;
+    case VA_SRC_SMPTE_240:
+        return VAProcColorStandardSMPTE240M;
+    default:
+        return VAProcColorStandardBT601;
+    }
+}
+
+const float *i915_color_standard_to_coefs (VAProcColorStandardType standard, size_t *length) {
+    switch (standard) {
+    case VAProcColorStandardBT601:
+        *length = sizeof(yuv_to_rgb_bt601);
+        return yuv_to_rgb_bt601;
+    case VAProcColorStandardBT709:
+        *length = sizeof(yuv_to_rgb_bt709);
+        return yuv_to_rgb_bt709;
+    case VAProcColorStandardSMPTE240M:
+        *length = sizeof(yuv_to_rgb_smpte_240);
+        return yuv_to_rgb_smpte_240;
+    default:
+        *length = sizeof(yuv_to_rgb_bt601);
+        return yuv_to_rgb_bt601;
+    }
+}