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  1. /*
  2.  * Add macroblock correction Y data blocks to predicted picture
  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: add_Error_16x16_Y.asm
  42. //
  43. // Add macroblock correction Y data blocks to predicted picture
  44. //
  45.  
  46. //  Every line of predicted Y data is added to Y error data if CBP bit is set
  47.  
  48.     mov (1) PERROR_UD<1>:ud     0x10001*ERRBUF*GRFWIB+0x00100000:ud     // Pointers to first and second row of error block
  49.  
  50.     and.z.f0.1 (1)      NULLREG    REG_CBPCY    CBP_Y_MASK
  51.     (f0.1) jmpi (1) End_add_Error_16x16_Y       // Skip all blocks
  52.  
  53. //  Block Y0
  54. //
  55.     $for(0,0; <8; 2,1) {
  56.         add.sat (16)    DEC_Y(%1)<2>    r[PERROR,%2*GRFWIB]REGION(8,1):w        PRED_Y(%1)REGION(8,2) {Compr}
  57.     }
  58.  
  59. //  Block Y1
  60. //
  61.     $for(0,0; <8; 2,1) {
  62.         add.sat (16)    DEC_Y(%1,16)<2>         r[PERROR,%2*GRFWIB+0x80]REGION(8,1):w   PRED_Y(%1,16)REGION(8,2) {Compr}
  63.     }
  64.  
  65. //  Block Y2
  66. //
  67.     $for(8,0; <16; 2,1) {
  68.         add.sat (16)    DEC_Y(%1)<2>    r[PERROR,%2*GRFWIB+0x100]REGION(8,1):w  PRED_Y(%1)REGION(8,2) {Compr}
  69.     }
  70.  
  71. //  Block Y3
  72. //
  73.     $for(8,0; <16; 2,1) {
  74.         add.sat (16)    DEC_Y(%1,16)<2>         r[PERROR,%2*GRFWIB+0x180]REGION(8,1):w  PRED_Y(%1,16)REGION(8,2) {Compr}
  75.     }
  76.  
  77. End_add_Error_16x16_Y:
  78.     add (1) PERROR_UD<1>:ud     PERROR_UD:ud    0x01800180:ud   // Pointers to Y3 error block
  79.  
  80. //  End of add_Error_16x16_Y
  81.  
  82.