mirror of https://github.com/FreeRDP/FreeRDP
139 lines
4.4 KiB
Common Lisp
139 lines
4.4 KiB
Common Lisp
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Optimized operations using openCL
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* vi:ts=4 sw=4
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*
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* Copyright 2019 David Fort <contact@hardening-consulting.com>
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* Copyright 2019 Rangee Gmbh
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License. You may obtain
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* a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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#define STRINGIFY(x) #x
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STRINGIFY(
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uchar clamp_uc(int v, short l, short h)
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{
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if (v > h)
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v = h;
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if (v < l)
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v = l;
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return (uchar)v;
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}
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__kernel void yuv420_to_argb_1b(
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__global const uchar *bufY, int strideY,
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__global const uchar *bufU, int strideU,
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__global const uchar *bufV, int strideV,
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__global uchar *dest, int strideDest)
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{
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unsigned int x = get_global_id(0);
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unsigned int y = get_global_id(1);
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short Y = bufY[y * strideY + x];
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short Udim = bufU[(y / 2) * strideU + (x / 2)] - 128;
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short Vdim = bufV[(y / 2) * strideV + (x / 2)] - 128;
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__global uchar *destPtr = dest + (strideDest * y) + (x * 4);
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/**
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* | R | ( | 256 0 403 | | Y | )
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* | G | = ( | 256 -48 -120 | | U - 128 | ) >> 8
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* | B | ( | 256 475 0 | | V - 128 | )
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*/
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int y256 = 256 * Y;
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destPtr[0] = 0xff; /* A */
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destPtr[1] = clamp_uc((y256 + (403 * Vdim)) >> 8, 0, 255); /* R */
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destPtr[2] = clamp_uc((y256 - (48 * Udim) - (120 * Vdim)) >> 8 , 0, 255); /* G */
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destPtr[3] = clamp_uc((y256 + (475 * Udim)) >> 8, 0, 255); /* B */
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}
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__kernel void yuv420_to_bgra_1b(
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__global const uchar *bufY, int strideY,
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__global const uchar *bufU, int strideU,
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__global const uchar *bufV, int strideV,
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__global uchar *dest, int strideDest)
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{
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unsigned int x = get_global_id(0);
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unsigned int y = get_global_id(1);
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short Y = bufY[y * strideY + x];
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short U = bufU[(y / 2) * strideU + (x / 2)] - 128;
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short V = bufV[(y / 2) * strideV + (x / 2)] - 128;
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__global uchar *destPtr = dest + (strideDest * y) + (x * 4);
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/**
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* | R | ( | 256 0 403 | | Y | )
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* | G | = ( | 256 -48 -120 | | U - 128 | ) >> 8
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* | B | ( | 256 475 0 | | V - 128 | )
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*/
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int y256 = 256 * Y;
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destPtr[0] = clamp_uc((y256 + (475 * U)) >> 8, 0, 255); /* B */
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destPtr[1] = clamp_uc((y256 - ( 48 * U) - (120 * V)) >> 8 , 0, 255); /* G */
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destPtr[2] = clamp_uc((y256 + (403 * V)) >> 8, 0, 255); /* R */
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destPtr[3] = 0xff; /* A */
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}
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__kernel void yuv444_to_bgra_1b(
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__global const uchar *bufY, int strideY,
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__global const uchar *bufU, int strideU,
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__global const uchar *bufV, int strideV,
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__global uchar *dest, int strideDest)
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{
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unsigned int x = get_global_id(0);
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unsigned int y = get_global_id(1);
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short Y = bufY[y * strideY + x];
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short U = bufU[y * strideU + x] - 128;
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short V = bufV[y * strideV + x] - 128;
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__global uchar *destPtr = dest + (strideDest * y) + (x * 4);
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/**
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* | R | ( | 256 0 403 | | Y | )
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* | G | = ( | 256 -48 -120 | | U - 128 | ) >> 8
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* | B | ( | 256 475 0 | | V - 128 | )
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*/
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int y256 = 256 * Y;
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destPtr[0] = clamp_uc((y256 + (475 * U)) >> 8, 0, 255); /* B */
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destPtr[1] = clamp_uc((y256 - ( 48 * U) - (120 * V)) >> 8 , 0, 255); /* G */
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destPtr[2] = clamp_uc((y256 + (403 * V)) >> 8, 0, 255); /* R */
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destPtr[3] = 0xff; /* A */
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}
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__kernel void yuv444_to_argb_1b(
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__global const uchar *bufY, int strideY,
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__global const uchar *bufU, int strideU,
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__global const uchar *bufV, int strideV,
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__global uchar *dest, int strideDest)
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{
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unsigned int x = get_global_id(0);
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unsigned int y = get_global_id(1);
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short Y = bufY[y * strideY + x];
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short U = bufU[y * strideU + x] - 128;
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short V = bufV[y * strideV + x] - 128;
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__global uchar *destPtr = dest + (strideDest * y) + (x * 4);
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/**
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* | R | ( | 256 0 403 | | Y | )
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* | G | = ( | 256 -48 -120 | | U - 128 | ) >> 8
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* | B | ( | 256 475 0 | | V - 128 | )
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*/
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int y256 = 256 * Y;
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destPtr[3] = clamp_uc((y256 + (475 * U)) >> 8, 0, 255); /* B */
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destPtr[2] = clamp_uc((y256 - ( 48 * U) - (120 * V)) >> 8 , 0, 255); /* G */
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destPtr[1] = clamp_uc((y256 + (403 * V)) >> 8, 0, 255); /* R */
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destPtr[0] = 0xff; /* A */
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}
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)
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