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/*
* All Video Processing kernels
* 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.
*
*/
//---------- PL3_AVS_IEF_8x4.asm ----------
#include "AVS_IEF.inc"
//------------------------------------------------------------------------------
// 2 sampler reads for 8x8 Y surface
// 1 sampler read for 8x8 U surface
// 1 sampler read for 8x8 V surface
//------------------------------------------------------------------------------
// 1st 8x8 setup
#include "AVS_SetupFirstBlock.asm"
// 1st 8x8 Y sampling
mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud // Enable green channel
mov (16) mAVS_8x8_HDR.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
send (1) uwAVS_RESPONSE(0)<1> mAVS_8x8_HDR udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_Y+nBI_CURRENT_SRC_Y
// Return Y in 4 GRFs
// 8x8 U sampling ; Only 8x4 will be used
mov (1) rAVS_8x8_HDR.2:ud nAVS_RED_CHANNEL_ONLY:ud // Enable red channel
mul (1) rAVS_PAYLOAD.1:f fVIDEO_STEP_X:f 2.0:f // Calculate Step X for chroma
mov (16) mAVS_8x8_HDR_UV.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
send (1) uwAVS_RESPONSE(4)<1> mAVS_8x8_HDR_UV udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_U+nBI_CURRENT_SRC_U
// Return U in 4 GRFs
// 8x8 V sampling ; Only 8x4 will be used
mov (1) rAVS_8x8_HDR.2:ud nAVS_RED_CHANNEL_ONLY:ud // Dummy instruction just in order to avoid back-2-back send instructions!
mov (16) mAVS_8x8_HDR_UV.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
send (1) uwAVS_RESPONSE(8)<1> mAVS_8x8_HDR_UV udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_V+nBI_CURRENT_SRC_V
// Return V in 4 GRFs
// 2nd 8x8 setup
#include "AVS_SetupSecondBlock.asm"
// 2nd 8x8 Y sampling
mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud // Enable green channel
mov (1) rAVS_PAYLOAD.1:f fVIDEO_STEP_X:f // Restore Step X for luma
mov (16) mAVS_8x8_HDR.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
send (1) uwAVS_RESPONSE(12)<1> mAVS_8x8_HDR udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_Y+nBI_CURRENT_SRC_Y
// Return Y in 4 GRFs
//------------------------------------------------------------------------------
// Unpacking sampler reads to 4:2:0 internal planar
//------------------------------------------------------------------------------
#include "PL3_AVS_IEF_Unpack_8x4.asm"
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