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  1. /*
  2.  * All Video Processing kernels
  3.  * Copyright © <2010>, Intel Corporation.
  4.  *
  5.  * This program is licensed under the terms and conditions of the
  6.  * Eclipse Public License (EPL), version 1.0.  The full text of the EPL is at
  7.  * http://www.opensource.org/licenses/eclipse-1.0.php.
  8.  *
  9.  */
  10.  
  11. // Module name: PA_Load_8x8.asm
  12. //----------------------------------------------------------------
  13.  
  14. #define  PA_LOAD_8x8
  15. #include "PA_Load.inc"
  16.  
  17. //  Load 16x8 packed data block
  18. //  Packed data block should be loaded as 32x8 pixel block
  19.     add  (2) rMSGSRC.0<1>:d     wORIX<2;2,1>:w    wSRC_H_ORI_OFFSET<2;2,1>:w       // Source Block origin
  20.     shl  (1) rMSGSRC.0<1>:d     rMSGSRC.0<0;1,0>:w            1:w                  // H. block origin need to be doubled
  21.     mov  (1) rMSGSRC.2<1>:ud    nDPR_BLOCK_SIZE_YUV:ud                             // Block width and height (32x8)
  22.     mov  (8) mMSGHDRY<1>:ud     rMSGSRC<8;8,1>:ud
  23.     send (8) udSRC_YUV(0)<1>    mMSGHDRY    udDUMMY_NULL    nDATAPORT_READ    nDPMR_MSGDSC+nDPR_MSG_SIZE_YUV+nBI_CURRENT_SRC_YUV:ud
  24.  
  25. //  Unpack to "planar" YUV422 format in word-aligned bytes
  26.     add  (4) pCF_Y_OFFSET<1>:uw    ubSRC_CF_OFFSET<4;4,1>:ub    nSRC_YUV_REG*nGRFWIB:w    // Initial Y,U,V offset in YUV422 block
  27.     $for(0; <nY_NUM_OF_ROWS; 1) {
  28.         mov (16)  uwDEST_Y(0, %1*16)<1>     r[pCF_Y_OFFSET, %1*nGRFWIB]REGION(16,2)
  29.         mov (8)   uwDEST_U(0, %1*8)<1>      r[pCF_U_OFFSET, %1*nGRFWIB]REGION(8,4)
  30.         mov (8)   uwDEST_V(0, %1*8)<1>      r[pCF_V_OFFSET, %1*nGRFWIB]REGION(8,4)
  31.     }
  32.  
  33. // End of PA_Load_8x8
  34.