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diff --git a/src/gallium/auxiliary/vl/vl_csc.c b/src/gallium/auxiliary/vl/vl_csc.c
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-/**************************************************************************
- *
- * Copyright 2009 Younes Manton.
- * All Rights Reserved.
- *
- * 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 TUNGSTEN GRAPHICS 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 "vl_csc.h"
-#include <util/u_math.h>
-#include <util/u_debug.h>
-
-/*
- * Color space conversion formulas
- *
- * To convert YCbCr to RGB,
- * vec4 ycbcr, rgb
- * mat44 csc
- * rgb = csc * ycbcr
- *
- * To calculate the color space conversion matrix csc with ProcAmp adjustments,
- * mat44 csc, cstd, procamp, bias
- * csc = cstd * (procamp * bias)
- *
- * Where cstd is a matrix corresponding to one of the color standards (BT.601, BT.709, etc)
- * adjusted for the kind of YCbCr -> RGB mapping wanted (1:1, full),
- * bias is a matrix corresponding to the kind of YCbCr -> RGB mapping wanted (1:1, full)
- *
- * To calculate procamp,
- * mat44 procamp, hue, saturation, brightness, contrast
- * procamp = brightness * (saturation * (contrast * hue))
- * Alternatively,
- * procamp = saturation * (brightness * (contrast * hue))
- *
- * contrast
- * [ c, 0, 0, 0]
- * [ 0, c, 0, 0]
- * [ 0, 0, c, 0]
- * [ 0, 0, 0, 1]
- *
- * brightness
- * [ 1, 0, 0, b]
- * [ 0, 1, 0, 0]
- * [ 0, 0, 1, 0]
- * [ 0, 0, 0, 1]
- *
- * saturation
- * [ 1, 0, 0, 0]
- * [ 0, s, 0, 0]
- * [ 0, 0, s, 0]
- * [ 0, 0, 0, 1]
- *
- * hue
- * [ 1, 0, 0, 0]
- * [ 0, cos(h), sin(h), 0]
- * [ 0, -sin(h), cos(h), 0]
- * [ 0, 0, 0, 1]
- *
- * procamp
- * [ c, 0, 0, b]
- * [ 0, c*s*cos(h), c*s*sin(h), 0]
- * [ 0, -c*s*sin(h), c*s*cos(h), 0]
- * [ 0, 0, 0, 1]
- *
- * bias
- * [ 1, 0, 0, ybias]
- * [ 0, 1, 0, cbbias]
- * [ 0, 0, 1, crbias]
- * [ 0, 0, 0, 1]
- *
- * csc
- * [ c*cstd[ 0], c*cstd[ 1]*s*cos(h) - c*cstd[ 2]*s*sin(h), c*cstd[ 2]*s*cos(h) + c*cstd[ 1]*s*sin(h), cstd[ 3] + cstd[ 0]*(b + c*ybias) + cstd[ 1]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[ 2]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
- * [ c*cstd[ 4], c*cstd[ 5]*s*cos(h) - c*cstd[ 6]*s*sin(h), c*cstd[ 6]*s*cos(h) + c*cstd[ 5]*s*sin(h), cstd[ 7] + cstd[ 4]*(b + c*ybias) + cstd[ 5]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[ 6]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
- * [ c*cstd[ 8], c*cstd[ 9]*s*cos(h) - c*cstd[10]*s*sin(h), c*cstd[10]*s*cos(h) + c*cstd[ 9]*s*sin(h), cstd[11] + cstd[ 8]*(b + c*ybias) + cstd[ 9]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[10]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
- * [ c*cstd[12], c*cstd[13]*s*cos(h) - c*cstd[14]*s*sin(h), c*cstd[14]*s*cos(h) + c*cstd[13]*s*sin(h), cstd[15] + cstd[12]*(b + c*ybias) + cstd[13]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[14]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
- */
-
-/*
- * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [16,235]
- */
-static const float bt_601[16] =
-{
- 1.0f, 0.0f, 1.371f, 0.0f,
- 1.0f, -0.336f, -0.698f, 0.0f,
- 1.0f, 1.732f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
-};
-
-/*
- * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [0,255]
- */
-static const float bt_601_full[16] =
-{
- 1.164f, 0.0f, 1.596f, 0.0f,
- 1.164f, -0.391f, -0.813f, 0.0f,
- 1.164f, 2.018f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
-};
-
-/*
- * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [16,235]
- */
-static const float bt_709[16] =
-{
- 1.0f, 0.0f, 1.540f, 0.0f,
- 1.0f, -0.183f, -0.459f, 0.0f,
- 1.0f, 1.816f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
-};
-
-/*
- * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [0,255]
- */
-static const float bt_709_full[16] =
-{
- 1.164f, 0.0f, 1.793f, 0.0f,
- 1.164f, -0.213f, -0.534f, 0.0f,
- 1.164f, 2.115f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
-};
-
-static const float identity[16] =
-{
- 1.0f, 0.0f, 0.0f, 0.0f,
- 0.0f, 1.0f, 0.0f, 0.0f,
- 0.0f, 0.0f, 1.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
-};
-
-void vl_csc_get_matrix(enum VL_CSC_COLOR_STANDARD cs,
- struct vl_procamp *procamp,
- bool full_range,
- float *matrix)
-{
- float ybias = full_range ? -16.0f/255.0f : 0.0f;
- float cbbias = -128.0f/255.0f;
- float crbias = -128.0f/255.0f;
- float c = procamp ? procamp->contrast : 1.0f;
- float s = procamp ? procamp->saturation : 1.0f;
- float b = procamp ? procamp->brightness : 0.0f;
- float h = procamp ? procamp->hue : 0.0f;
- const float *cstd;
-
- assert(matrix);
-
- switch (cs) {
- case VL_CSC_COLOR_STANDARD_BT_601:
- cstd = full_range ? &bt_601_full[0] : &bt_601[0];
- break;
- case VL_CSC_COLOR_STANDARD_BT_709:
- cstd = full_range ? &bt_709_full[0] : &bt_709[0];
- break;
- case VL_CSC_COLOR_STANDARD_IDENTITY:
- default:
- assert(cs == VL_CSC_COLOR_STANDARD_IDENTITY);
- memcpy(matrix, &identity[0], sizeof(float) * 16);
- return;
- }
-
- matrix[ 0] = c*cstd[ 0];
- matrix[ 1] = c*cstd[ 1]*s*cosf(h) - c*cstd[ 2]*s*sinf(h);
- matrix[ 2] = c*cstd[ 2]*s*cosf(h) + c*cstd[ 1]*s*sinf(h);
- matrix[ 3] = cstd[ 3] + cstd[ 0]*(b + c*ybias) + cstd[ 1]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[ 2]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
-
- matrix[ 4] = c*cstd[ 4];
- matrix[ 5] = c*cstd[ 5]*s*cosf(h) - c*cstd[ 6]*s*sinf(h);
- matrix[ 6] = c*cstd[ 6]*s*cosf(h) + c*cstd[ 5]*s*sinf(h);
- matrix[ 7] = cstd[ 7] + cstd[ 4]*(b + c*ybias) + cstd[ 5]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[ 6]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
-
- matrix[ 8] = c*cstd[ 8];
- matrix[ 9] = c*cstd[ 9]*s*cosf(h) - c*cstd[10]*s*sinf(h);
- matrix[10] = c*cstd[10]*s*cosf(h) + c*cstd[ 9]*s*sinf(h);
- matrix[11] = cstd[11] + cstd[ 8]*(b + c*ybias) + cstd[ 9]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[10]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
-
- matrix[12] = c*cstd[12];
- matrix[13] = c*cstd[13]*s*cos(h) - c*cstd[14]*s*sin(h);
- matrix[14] = c*cstd[14]*s*cos(h) + c*cstd[13]*s*sin(h);
- matrix[15] = cstd[15] + cstd[12]*(b + c*ybias) + cstd[13]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[14]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h));
-}
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