i965_drv_video/shaders/h264/mc/loadRef_Y_16x9.asm

   1 /*\r
   2  * Load reference 16x9 area for luma 4x4 MC\r
   3  * Copyright © <2010>, Intel Corporation.\r
   4  *\r
   5  * This program is licensed under the terms and conditions of the\r
   6  * Eclipse Public License (EPL), version 1.0.  The full text of the EPL is at\r
   7  * http://www.opensource.org/licenses/eclipse-1.0.php.\r
   8  *\r
   9  */\r
  10 // Kernel name: LoadRef_Y_16x9.asm\r
  11 //\r
  12 // Load reference 16x9 area for luma 4x4 MC\r
  13 \r
  14 \r
  15 //#if !defined(__LOADREF_Y_16x9__)              // Make sure this is only included once\r
  16 //#define __LOADREF_Y_16x9__\r
  17 \r
  18 #if 1\r
  19 \r
  20         // Compute integer and fractional components of MV\r
  21     and (2)             gMVX_FRAC<1>:w          r[pMV,0]<2;2,1>:w                               0x03:w  //{NoDDClr}\r
  22     asr (2)             gMVX_INT<1>:w           r[pMV,0]<2;2,1>:w                               0x02:w  //{NoDDChk}\r
  23  \r
  24     // Check whether MVY is integer\r
  25         or.z.f0.1 (8) null:w                    gMVY_FRAC<0;1,0>:w                              0:w\r
  26            \r
  27         // Set message descriptor\r
  28         (f0.1) add (1)  pMSGDSC:ud              gMSGDSC_R:ud                                    RESP_LEN(2):ud\r
  29         (-f0.1) add (1) pMSGDSC:ud              gMSGDSC_R:ud                                    RESP_LEN(5):ud\r
  30 \r
  31         // Compute top-left corner position to be loaded\r
  32         // TODO: sel\r
  33     (-f0.1) add (2)     gMSGSRC.0<1>:d  gMVX_INT<2;2,1>:w                               -0x02:d //{NoDDClr}\r
  34     (-f0.1) mov (1)     gMSGSRC.2:ud    0x00080008:ud                                                   //{NoDDChk}\r
  35     (f0.1) add (1)      gMSGSRC.0<1>:d  gMVX_INT<0;1,0>:w                               -0x02:d //{NoDDClr}\r
  36         (f0.1) mov (1)  gMSGSRC.1<1>:d  gMVY_INT<0;1,0>:w                                               //{NoDDChk,NoDDClr}\r
  37     (f0.1) mov (1)      gMSGSRC.2:ud    0x00030008:ud                                                   //{NoDDChk}\r
  38 \r
  39     // Read 16x9 pixels\r
  40     send (8)    gudREF(0)<1>        mMSGHDRY                                            gMSGSRC<8;8,1>:ud       DAPREAD pMSGDSC:ud\r
  41 \r
  42 #else\r
  43 \r
  44         // Compute integer and fractional components of MV\r
  45     and (2)             gMVX_FRAC<1>:w          r[pMV,0]<2;2,1>:w                               0x03:w {NoDDClr} //\r
  46     asr (2)             gMVX_INT<1>:w           r[pMV,0]<2;2,1>:w                               0x02:w {NoDDChk} //\r
  47 \r
  48         // Set message descriptor\r
  49         add (1)         pMSGDSC:ud                      gMSGDSC_R:ud                                    RESP_LEN(5):ud\r
  50     \r
  51         // Compute top-left corner position to be loaded \r
  52     add (2)             gMSGSRC.0<1>:d          gMVX_INT<2;2,1>:w                               -0x02:d {NoDDClr} //\r
  53     mov (1)             gMSGSRC.2:ud            0x00080008:ud                                                   {NoDDChk} //\r
  54 \r
  55     // Read 16x9 pixels\r
  56     send (8)    gudREF(0)<1>        mMSGHDRY                                            gMSGSRC<8;8,1>:ud       DAPREAD pMSGDSC:ud\r
  57 \r
  58 #endif\r
  59 \r
  60         \r
  61 //#endif        // !defined(__LOADREF_Y_16x9__)\r