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/*
* Save Intra_4x4 decoded Y picture data to frame buffer
* Copyright © <2010>, Intel Corporation.
*
* This program is licensed under the terms and conditions of the
* Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
* http://www.opensource.org/licenses/eclipse-1.0.php.
*
*/
#if !defined(__SAVE_4X4_Y__) // Make sure this is only included once
#define __SAVE_4X4_Y__
// Module name: save_4x4_Y.asm
//
// Save Intra_4x4 decoded Y picture data to frame buffer
// Note: Each 4x4 block is stored in 1 GRF register in the order of block raster scan order,
// i.e. 0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15
save_4x4_Y:
mov (1) MSGSRC.2:ud 0x000F000F:ud {NoDDClr} // Block width and height (16x16)
mov (2) MSGSRC.0:ud I_ORIX<2;2,1>:w {NoDDChk} // X, Y offset
#ifdef DEV_ILK
add (1) MSGDSC MSGDSC MSG_LEN(8)+DWBWMSGDSC_WC-DWBRMSGDSC_RC-0x00200000:ud // Set message descriptor
#else
add (1) MSGDSC MSGDSC MSG_LEN(8)+DWBWMSGDSC_WC-DWBRMSGDSC_RC-0x00020000:ud // Set message descriptor
#endif // DEV_ILK
$for(0; <8; 2) {
mov (16) MSGPAYLOAD(%1)<1> DEC_Y(%1)<16;4,1>
mov (16) MSGPAYLOAD(%1,16)<1> DEC_Y(%1,4)<16;4,1>
mov (16) MSGPAYLOAD(%1+1)<1> DEC_Y(%1,8)<16;4,1>
mov (16) MSGPAYLOAD(%1+1,16)<1> DEC_Y(%1,12)<16;4,1>
}
// Update message descriptor based on previous read setup
//
send (8) REG_WRITE_COMMIT_Y<1>:ud MSGHDR MSGSRC<8;8,1>:ud DAPWRITE MSGDSC
RETURN
// End of save_4x4_Y
#endif // !defined(__SAVE_4X4_Y__)
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