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  1. /*
  2.  * All Video Processing kernels
  3.  * Copyright © <2010>, Intel Corporation.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the
  7.  * "Software"), to deal in the Software without restriction, including
  8.  * without limitation the rights to use, copy, modify, merge, publish,
  9.  * distribute, sub license, and/or sell copies of the Software, and to
  10.  * permit persons to whom the Software is furnished to do so, subject to
  11.  * the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the
  14.  * next paragraph) shall be included in all copies or substantial portions
  15.  * of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20.  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  21.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24.  *
  25.  * This file was originally licensed under the following license
  26.  *
  27.  *  Licensed under the Apache License, Version 2.0 (the "License");
  28.  *  you may not use this file except in compliance with the License.
  29.  *  You may obtain a copy of the License at
  30.  *
  31.  *      http://www.apache.org/licenses/LICENSE-2.0
  32.  *
  33.  *  Unless required by applicable law or agreed to in writing, software
  34.  *  distributed under the License is distributed on an "AS IS" BASIS,
  35.  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  36.  *  See the License for the specific language governing permissions and
  37.  *  limitations under the License.
  38.  *
  39.  */
  40.  
  41. // Module name: readSampler16x1.asm
  42. //
  43. // Read one row of pix through sampler
  44. //
  45.  
  46.  
  47.  
  48. //#define SAMPLER_MSG_DSC               0x166A0000      // ILK Sampler Message Descriptor
  49.  
  50.  
  51.  
  52. // Send Message [DevILK]                                Message Descriptor
  53. //  MBZ MsgL=5 MsgR=8                            H MBZ   SIMD     MsgType   SmplrIndx BindTab
  54. //  000 0 101 0 1000                             1  0     10     0000         0000    00000000
  55. //    0     A    8                                     A             0             0     0     0
  56.  
  57. //     MsgL=1+2*2(u,v)=5 MsgR=8
  58.  
  59. #define SAMPLER_MSG_DSC         0x0A8A0000      // ILK Sampler Message Descriptor
  60.  
  61.  
  62.  
  63.  
  64.  
  65.                                                                                
  66.  
  67.         // Assume MSGSRC is set already in the caller
  68.         //mov (8)               rMSGSRC.0<1>:ud                 0:ud    // Unused fileds
  69.  
  70.  
  71.  
  72.         // Read 16 sampled pixels and stored them in float32 in 8 GRFs
  73.         // 422 data is expanded to 444, return 8 GRF in the order of RGB- (UYV-).
  74.         // 420 data has three surfaces, return 8 GRF. Valid is always in the 1st GRF when in R8.  Make sure no overwrite the following 3 GRFs.
  75.         // alpha data is expanded to 4444, return 8 GRF in the order of RGBA (UYVA).
  76.  
  77.     mov(16)     mMSGHDR<1>:uw   rMSGSRC<16;16,1>:uw
  78.     send (16)   DATABUF(0)<1>   mMSGHDR         udDUMMY_NULL    0x2 SAMPLER_MSG_DSC+SAMPLER_IDX+BINDING_IDX:ud
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