i965_drv_video/shaders/mpeg2/vld/iq_intra.g4i

/*
 * Copyright © 2009 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Author:
 *    Zou Nan hai <nanhai.zou@intel.com>
 *    Yan Li <li.l.yan@intel.com>
 *    Liu Xi bin<xibin.liu@intel.com>
 */
/* GRF allocation:
   g1~g30: constant buffer
           g1~g2:intra IQ matrix in UB format
           g3~g4:non intra IQ matrix in UB format
           g5~g20:IDCT table
   g32~g55:DCT data before IQ
   g56~g79:DCT data after IQ
   g82:    thread payload backup
   g109:   g109.0:q_scale_code, g109.4:intra_dc_mult, 
   g110:   q_scale_code
   g111:   intra DC coefficient 
   g112~g115: intra IQ matrix in UW format (in order to use instruction compress), copys from g1~g2
   g125:   ip before jump
*/
and (1) g109.0<1>UW g82.8<1,1,1>UW 0x1fUW {align1};    //q_scale_code

and (1) g109.4<1>UW g82.8<1,1,1>UW 0x6000UW {align1};   //intra_dc_presion
shr (1) g109.4<1>UW g109.4<1,1,1>UW 13UW {align1};
mov (1) g109.6<1>UW 0x8UW {align1};
shr (1) g109.4<1>UW g109.6<1,1,1>UW g109.4<1,1,1>UW {align1};  //intra_dc_mult
 
and.z (1) null g82.8<1,1,1>UW 0x20UW {align1};   //if(q_scale_type==0) q_scale=q_scale_code*2;
(f0) jmpi Q_SCALE_TYPE_0;

cmp.l (1) null g109.0<1,1,1>UW 9UW {align1};      //if(q_scale_type!=0) calculate q_scale
(f0) jmpi DO_IQ;
cmp.l (1) null g109.0<1,1,1>UW 17UW {align1};
(f0) jmpi RANG_9_16;
cmp.l (1) null g109.0<1,1,1>UW 25UW {align1};
(f0) jmpi RANG_17_24;

RANG_25_31:
add (1) g109.0<1>UW g109.0<1,1,1>UW -25W {align1};
shl (1) g109.0<1>UW g109.0<1,1,1>UW 3UW {align1};
add (1) g109.0<1>UW g109.0<1,1,1>UW 64UW {align1};
jmpi DO_IQ;

RANG_9_16:
add (1) g109.0<1>UW g109.0<1,1,1>UW -9W {align1};
shl (1) g109.0<1>UW g109.0<1,1,1>UW 1UW {align1};
add (1) g109.0<1>UW g109.0<1,1,1>UW 10UW {align1};
jmpi DO_IQ;

RANG_17_24:
add (1) g109.0<1>UW g109.0<1,1,1>UW -17W {align1};
shl (1) g109.0<1>UW g109.0<1,1,1>UW 2UW {align1};
add (1) g109.0<1>UW g109.0<1,1,1>UW 28UW {align1};
jmpi DO_IQ;

Q_SCALE_TYPE_0:
shl (1) g109.0<1>UW g109.0<1,1,1>UW 1UD {align1};

DO_IQ:
mov (1) g110.0<1>UW g109.0<1,1,1>UW {align1};

mov (16) g112.0<1>UW g1.0<16,16,1>UB {align1};
mov (16) g113.0<1>UW g1.16<16,16,1>UB {align1};
mov (16) g114.0<1>UW g2.0<16,16,1>UB {align1};
mov (16) g115.0<1>UW g2.16<16,16,1>UB {align1};

mov (1) a0.0<1>UD 0x03F003E0UD {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g56.0<1>W g116.0<16,8,2>W {align1};
mov (16) g57.0<1>W g118.0<16,8,2>W {align1};
mov (16) g58.0<1>W g120.0<16,8,2>W {align1};
mov (16) g59.0<1>W g122.0<16,8,2>W {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g60.0<1>W g116.0<16,8,2>W {align1};
mov (16) g61.0<1>W g118.0<16,8,2>W {align1};
mov (16) g62.0<1>W g120.0<16,8,2>W {align1};
mov (16) g63.0<1>W g122.0<16,8,2>W {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g64.0<1>W g116.0<16,8,2>W {align1};
mov (16) g65.0<1>W g118.0<16,8,2>W {align1};
mov (16) g66.0<1>W g120.0<16,8,2>W {align1};
mov (16) g67.0<1>W g122.0<16,8,2>W {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g68.0<1>W g116.0<16,8,2>W {align1};
mov (16) g69.0<1>W g118.0<16,8,2>W {align1};
mov (16) g70.0<1>W g120.0<16,8,2>W {align1};
mov (16) g71.0<1>W g122.0<16,8,2>W {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g72.0<1>W g116.0<16,8,2>W {align1};
mov (16) g73.0<1>W g118.0<16,8,2>W {align1};
mov (16) g74.0<1>W g120.0<16,8,2>W {align1};
mov (16) g75.0<1>W g122.0<16,8,2>W {align1};

mov (1) g125.0<1>UD ip {align1};
jmpi DO_IQ_INTRA;
mov (16) g76.0<1>W g116.0<16,8,2>W {align1};
mov (16) g77.0<1>W g118.0<16,8,2>W {align1};
mov (16) g78.0<1>W g120.0<16,8,2>W {align1};
mov (16) g79.0<1>W g122.0<16,8,2>W {align1};