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  1. /*
  2.  * Copyright © 2009 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21.  * SOFTWARE.
  22.  *
  23.  * Author:
  24.  *    Zou Nan hai <nanhai.zou@intel.com>
  25.  *    Yan Li <li.l.yan@intel.com>
  26.  *    Liu Xi bin<xibin.liu@intel.com>
  27.  */
  28. /* GRF allocation:
  29.    g1~g30: constant buffer
  30.            g1~g2:intra IQ matrix in UB format
  31.            g3~g4:non intra IQ matrix in UB format
  32.            g5~g20:IDCT table
  33.    g56~g79:DCT data after IQ before idct
  34.    g83~g106: IDCT data after idct
  35.    g82:    thread payload backup
  36.    g125:   ip before idct
  37. */
  38. IDCT_START:
  39. mov (1) g126.0<1>UD ip {align1};
  40. jmpi DO_IDCT;
  41. add (16) g32<1>D g32<8,8,1>D ROW_ADD {compr};
  42. add (16) g34<1>D g34<8,8,1>D ROW_ADD {compr};
  43. add (16) g36<1>D g36<8,8,1>D ROW_ADD {compr};
  44. add (16) g38<1>D g38<8,8,1>D ROW_ADD {compr};
  45.  
  46. shr (16) g32<1>D g32<8,8,1>D ROW_SHIFT {compr};
  47. shr (16) g34<1>D g34<8,8,1>D ROW_SHIFT {compr};
  48. shr (16) g36<1>D g36<8,8,1>D ROW_SHIFT {compr};
  49. shr (16) g38<1>D g38<8,8,1>D ROW_SHIFT {compr};
  50.  
  51. mov (16) g110.0<1>W g32<16,8,2>W {align1};
  52. mov (16) g111.0<1>W g34<16,8,2>W {align1};
  53. mov (16) g112.0<1>W g36<16,8,2>W {align1};
  54. mov (16) g113.0<1>W g38<16,8,2>W {align1};
  55.  
  56. mov (1) g80.0<1>UD a0.0<1,1,1>UD {align1};  //save a0
  57. mov (1) a0.0<1>UD 0x0DB00DA0UD {align1};  //begin at g110.0, the output of idct_row.g4i
  58. mov (1) g126.0<1>UD ip {align1};
  59. jmpi DO_IDCT;
  60.  
  61. add (16) g32<1>D g32<8,8,1>D COL_ADD {compr};
  62. add (16) g34<1>D g34<8,8,1>D COL_ADD {compr};
  63. add (16) g36<1>D g36<8,8,1>D COL_ADD {compr};
  64. add (16) g38<1>D g38<8,8,1>D COL_ADD {compr};
  65.  
  66. shr (16) g32<1>D g32<8,8,1>D COL_SHIFT {compr};
  67. shr (16) g34<1>D g34<8,8,1>D COL_SHIFT {compr};
  68. shr (16) g36<1>D g36<8,8,1>D COL_SHIFT {compr};
  69. shr (16) g38<1>D g38<8,8,1>D COL_SHIFT {compr};
  70.  
  71. mov (1) a0.0<1>UD g80.0<1,1,1>UD {align1};             //restore a0
  72. add (1) ip g125.0<1,1,1>UD 0x20UD {align1};            //jump back
  73.  
  74. DO_IDCT:
  75. add (1) a0.0<1>UD a0.0<1,1,1>UD 0x00200020UD {align1};           //increase the address
  76. dp4 (16) g40<1>D g[a0.0]<8,8,1>W g5<8,8,1>D {align1 compr};
  77. dp4 (16) g42<1>D g[a0.0]<8,8,1>W g7<8,8,1>D {align1 compr};
  78. dp4 (16) g44<1>D g[a0.0]<8,8,1>W g9<8,8,1>D {align1 compr};
  79. dp4 (16) g46<1>D g[a0.0]<8,8,1>W g11<8,8,1>D {align1 compr};
  80. dp4 (16) g48<1>D g[a0.0]<8,8,1>W g13<8,8,1>D {align1 compr};
  81. dp4 (16) g50<1>D g[a0.0]<8,8,1>W g15<8,8,1>D {align1 compr};
  82. dp4 (16) g52<1>D g[a0.0]<8,8,1>W g17<8,8,1>D {align1 compr};
  83. dp4 (16) g54<1>D g[a0.0]<8,8,1>W g19<8,8,1>D {align1 compr};
  84. add (2) g32.0<1>D g40.0<8,1,8>D g40.16<8,1,8>D {align1};
  85. add (2) g33.0<1>D g42.0<8,1,8>D g42.16<8,1,8>D {align1};
  86. add (2) g34.0<1>D g44.0<8,1,8>D g44.16<8,1,8>D {align1};
  87. add (2) g35.0<1>D g46.0<8,1,8>D g46.16<8,1,8>D {align1};
  88. add (2) g36.0<1>D g48.0<8,1,8>D g48.16<8,1,8>D {align1};
  89. add (2) g37.0<1>D g50.0<8,1,8>D g50.16<8,1,8>D {align1};
  90. add (2) g38.0<1>D g52.0<8,1,8>D g52.16<8,1,8>D {align1};
  91. add (2) g39.0<1>D g54.0<8,1,8>D g54.16<8,1,8>D {align1};
  92.  
  93. add (1) a0.0<1>UD a0.0<1,1,1>UD 0x00200020UD {align1};
  94. dp4 (16) g40<1>D g[a0.0]<8,8,1>W g5<8,8,1>D {align1 compr};
  95. dp4 (16) g42<1>D g[a0.0]<8,8,1>W g7<8,8,1>D {align1 compr};
  96. dp4 (16) g44<1>D g[a0.0]<8,8,1>W g9<8,8,1>D {align1 compr};
  97. dp4 (16) g46<1>D g[a0.0]<8,8,1>W g11<8,8,1>D {align1 compr};
  98. dp4 (16) g48<1>D g[a0.0]<8,8,1>W g13<8,8,1>D {align1 compr};
  99. dp4 (16) g50<1>D g[a0.0]<8,8,1>W g15<8,8,1>D {align1 compr};
  100. dp4 (16) g52<1>D g[a0.0]<8,8,1>W g17<8,8,1>D {align1 compr};
  101. dp4 (16) g54<1>D g[a0.0]<8,8,1>W g19<8,8,1>D {align1 compr};
  102. add (2) g32.8<1>D g40.0<8,1,8>D g40.16<8,1,8>D {align1};
  103. add (2) g33.8<1>D g42.0<8,1,8>D g42.16<8,1,8>D {align1};
  104. add (2) g34.8<1>D g44.0<8,1,8>D g44.16<8,1,8>D {align1};
  105. add (2) g35.8<1>D g46.0<8,1,8>D g46.16<8,1,8>D {align1};
  106. add (2) g36.8<1>D g48.0<8,1,8>D g48.16<8,1,8>D {align1};
  107. add (2) g37.8<1>D g50.0<8,1,8>D g50.16<8,1,8>D {align1};
  108. add (2) g38.8<1>D g52.0<8,1,8>D g52.16<8,1,8>D {align1};
  109. add (2) g39.8<1>D g54.0<8,1,8>D g54.16<8,1,8>D {align1};
  110.  
  111. add (1) a0.0<1>UD a0.0<1,1,1>UD 0x00200020UD {align1};
  112. dp4 (16) g40<1>D g[a0.0]<8,8,1>W g5<8,8,1>D {align1 compr};
  113. dp4 (16) g42<1>D g[a0.0]<8,8,1>W g7<8,8,1>D {align1 compr};
  114. dp4 (16) g44<1>D g[a0.0]<8,8,1>W g9<8,8,1>D {align1 compr};
  115. dp4 (16) g46<1>D g[a0.0]<8,8,1>W g11<8,8,1>D {align1 compr};
  116. dp4 (16) g48<1>D g[a0.0]<8,8,1>W g13<8,8,1>D {align1 compr};
  117. dp4 (16) g50<1>D g[a0.0]<8,8,1>W g15<8,8,1>D {align1 compr};
  118. dp4 (16) g52<1>D g[a0.0]<8,8,1>W g17<8,8,1>D {align1 compr};
  119. dp4 (16) g54<1>D g[a0.0]<8,8,1>W g19<8,8,1>D {align1 compr};
  120. add (2) g32.16<1>D g40.0<8,1,8>D g40.16<8,1,8>D {align1};
  121. add (2) g33.16<1>D g42.0<8,1,8>D g42.16<8,1,8>D {align1};
  122. add (2) g34.16<1>D g44.0<8,1,8>D g44.16<8,1,8>D {align1};
  123. add (2) g35.16<1>D g46.0<8,1,8>D g46.16<8,1,8>D {align1};
  124. add (2) g36.16<1>D g48.0<8,1,8>D g48.16<8,1,8>D {align1};
  125. add (2) g37.16<1>D g50.0<8,1,8>D g50.16<8,1,8>D {align1};
  126. add (2) g38.16<1>D g52.0<8,1,8>D g52.16<8,1,8>D {align1};
  127. add (2) g39.16<1>D g54.0<8,1,8>D g54.16<8,1,8>D {align1};
  128.  
  129. add (1) a0.0<1>UD a0.0<1,1,1>UD 0x00200020UD {align1};
  130. dp4 (16) g40<1>D g[a0.0]<8,8,1>W g5<8,8,1>D {align1 compr};
  131. dp4 (16) g42<1>D g[a0.0]<8,8,1>W g7<8,8,1>D {align1 compr};
  132. dp4 (16) g44<1>D g[a0.0]<8,8,1>W g9<8,8,1>D {align1 compr};
  133. dp4 (16) g46<1>D g[a0.0]<8,8,1>W g11<8,8,1>D {align1 compr};
  134. dp4 (16) g48<1>D g[a0.0]<8,8,1>W g13<8,8,1>D {align1 compr};
  135. dp4 (16) g50<1>D g[a0.0]<8,8,1>W g15<8,8,1>D {align1 compr};
  136. dp4 (16) g52<1>D g[a0.0]<8,8,1>W g17<8,8,1>D {align1 compr};
  137. dp4 (16) g54<1>D g[a0.0]<8,8,1>W g19<8,8,1>D {align1 compr};
  138. add (2) g32.24<1>D g40.0<8,1,8>D g40.16<8,1,8>D {align1};
  139. add (2) g33.24<1>D g42.0<8,1,8>D g42.16<8,1,8>D {align1};
  140. add (2) g34.24<1>D g44.0<8,1,8>D g44.16<8,1,8>D {align1};
  141. add (2) g35.24<1>D g46.0<8,1,8>D g46.16<8,1,8>D {align1};
  142. add (2) g36.24<1>D g48.0<8,1,8>D g48.16<8,1,8>D {align1};
  143. add (2) g37.24<1>D g50.0<8,1,8>D g50.16<8,1,8>D {align1};
  144. add (2) g38.24<1>D g52.0<8,1,8>D g52.16<8,1,8>D {align1};
  145. add (2) g39.24<1>D g54.0<8,1,8>D g54.16<8,1,8>D {align1};
  146.  
  147. add (1) ip g126.0<1,1,1>UD 0x20UD {align1};            //jump back
  148.