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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.
*
*/
//---------- PL2_AVS_IEF_8x8.asm ----------
#include "AVS_IEF.inc"
//------------------------------------------------------------------------------
// 2 sampler reads for 8x8 Y each
// 1 sampler read for 8x8 U and 8x8 V (NV11\NV12 input surface)
//------------------------------------------------------------------------------
// 1st 8x8 setup
#include "AVS_SetupFirstBlock.asm"
// Enable green channel only
mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud
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 and V sampling
// Enable red and blue channels
mov (1) rAVS_8x8_HDR.2:ud nAVS_RED_BLUE_CHANNELS:ud
// Calculate Chroma Step Size:
// for H direction: 16 Luma samples are covered by 8 Chroma samples. Thus Chroma_Step_X = 2 * Luma_Step_X
// for V direction: 8 Luma samples are covered by 8 Chroma samples. Thus Chroma_Step_Y = Luma_Step_Y
mul (1) rAVS_PAYLOAD.1:f fVIDEO_STEP_X:f 2.0:f // 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_2CH+nSI_SRC_UV+nBI_CURRENT_SRC_UV
// Return U and V in 8 GRFs
// 2nd 8x8 setup
#include "AVS_SetupSecondBlock.asm"
// 2nd 8x8 Y sampling
// Enable green channel only
mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud
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_2(0)<1> mAVS_8x8_HDR udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_Y+nBI_CURRENT_SRC_Y
//------------------------------------------------------------------------------
// Unpacking sampler reads to 4:2:2 internal planar
//------------------------------------------------------------------------------
#include "PL2_AVS_IEF_Unpack_8x8.asm"
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