i965_drv_video/shaders/mpeg2/vld/frame_field_pred_backward.g4a

/*
 * 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
           g3~g4:non intra IQ matrix
           g5~g20:IDCT table
   g31:    thread payload 
   g58~g81:reference data
   g82:    thread payload backup
   g83~g106:IDCT data
   g115:   message descriptor for reading reference data   */
mov (8) g82.0<1>UD g31.0<8,8,1>UD {align1};
mov(2) g31.0<1>UD g82.12<2,2,1>UW {align1};
mov (1) g126.8<1>UD ip {align1};
mov (1) ip g21.0<1,1,1>UD {align1};

/*field 0 of Y*/
asr (2) g31.14<1>W g82.20<2,2,1>W 1W {align1};
shl (1) g31.16<1>W g31.16<1,1,1>W 1W {align1};
add (2) g115.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
and (1) g115.4<1>UD g115.4<1,1,1>UD 0xFFFFFFFEUD {align1};
and.nz (1) null g82.2<1,1,1>UW 0x2000UW {align1};
(f0) add (1) g115.4<1>UD g115.4<1,1,1>UD 1UD {align1};
define(`surface',`7')
define(`mv1',`g82.20')
define(`mv2',`g82.22')
include(`motion_field_y.g4i')
mov (8) g58.0<1>UD g32.0<8,8,1>UD {align1};
mov (8) g60.0<1>UD g33.0<8,8,1>UD {align1};
mov (8) g62.0<1>UD g34.0<8,8,1>UD {align1};
mov (8) g64.0<1>UD g35.0<8,8,1>UD {align1};
mov (8) g66.0<1>UD g36.0<8,8,1>UD {align1};
mov (8) g68.0<1>UD g37.0<8,8,1>UD {align1};
mov (8) g70.0<1>UD g38.0<8,8,1>UD {align1};
mov (8) g72.0<1>UD g39.0<8,8,1>UD {align1};

/*field 1 of Y*/
asr (2) g31.14<1>W g82.28<2,2,1>W 1W {align1};
shl (1) g31.16<1>W g31.16<1,1,1>W 1W {align1};
add (2) g115.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
and (1) g115.4<1>UD g115.4<1,1,1>UD 0xFFFFFFFEUD {align1};
and.nz (1) null g82.2<1,1,1>UW 0x8000UW {align1};
(f0) add (1) g115.4<1>UD g115.4<1,1,1>UD 1UD {align1};
define(`surface',`7')
define(`mv1',`g82.28')
define(`mv2',`g82.30')
include(`motion_field_y.g4i')
mov (8) g59.0<1>UD g32.0<8,8,1>UD {align1};
mov (8) g61.0<1>UD g33.0<8,8,1>UD {align1};
mov (8) g63.0<1>UD g34.0<8,8,1>UD {align1};
mov (8) g65.0<1>UD g35.0<8,8,1>UD {align1};
mov (8) g67.0<1>UD g36.0<8,8,1>UD {align1};
mov (8) g69.0<1>UD g37.0<8,8,1>UD {align1};
mov (8) g71.0<1>UD g38.0<8,8,1>UD {align1};
mov (8) g73.0<1>UD g39.0<8,8,1>UD {align1};

/*field 0 of UV*/
shr (2) g31.0<1>UD g31.0<2,2,1>UD 1UD {align1};
asr (2) g82.20<1>W g82.20<2,2,1>W 1W {align1};
asr (2) g31.14<1>W g82.20<2,2,1>W 1W {align1};
shl (1) g31.16<1>W g31.16<1,1,1>W 1W {align1};
add (2) g115.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
and.nz (1) null g82.2<1,1,1>UW 0x2000UW {align1};
(f0) add (1) g115.4<1>UD g115.4<1,1,1>UD 1UD {align1};
define(`surface_u', `8')
define(`surface_v', `9')
define(`mv1',`g82.20')
define(`mv2',`g82.22')
include(`motion_field_uv.g4i')
mov (8) g74.0<1>UW g32.0<8,8,1>UW {align1};
mov (8) g75.0<1>UW g33.0<8,8,1>UW {align1};
mov (8) g76.0<1>UW g34.0<8,8,1>UW {align1};
mov (8) g77.0<1>UW g35.0<8,8,1>UW {align1};
mov (8) g78.0<1>UW g36.0<8,8,1>UW {align1};
mov (8) g79.0<1>UW g37.0<8,8,1>UW {align1};
mov (8) g80.0<1>UW g38.0<8,8,1>UW {align1};
mov (8) g81.0<1>UW g39.0<8,8,1>UW {align1};

/*field 1 of UV*/
asr (2) g82.28<1>W g82.28<2,2,1>W 1W {align1};
asr (2) g31.14<1>W g82.28<2,2,1>W 1W {align1};
shl (1) g31.16<1>W g31.16<1,1,1>W 1W {align1};
add (2) g115.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
and.nz (1) null g82.2<1,1,1>UW 0x8000UW {align1};
(f0) add (1) g115.4<1>UD g115.4<1,1,1>UD 1UD {align1};
define(`mv1',`g82.28')
define(`mv2',`g82.30')
include(`motion_field_uv.g4i')
mov (8) g74.16<1>UW g32.0<8,8,1>UW {align1};
mov (8) g75.16<1>UW g33.0<8,8,1>UW {align1};
mov (8) g76.16<1>UW g34.0<8,8,1>UW {align1};
mov (8) g77.16<1>UW g35.0<8,8,1>UW {align1};
mov (8) g78.16<1>UW g36.0<8,8,1>UW {align1};
mov (8) g79.16<1>UW g37.0<8,8,1>UW {align1};
mov (8) g80.16<1>UW g38.0<8,8,1>UW {align1};
mov (8) g81.16<1>UW g39.0<8,8,1>UW {align1};

include(`addidct.g4i')
send (16) 0 acc0<1>UW g0<8,8,1>UW 
	thread_spawner(0, 0, 0) mlen 1 rlen 0 { align1 EOT};