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* All Video Processing kernels
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* Copyright © <2010>, Intel Corporation.
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* This program is licensed under the terms and conditions of the
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* Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
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* http://www.opensource.org/licenses/eclipse-1.0.php.
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//---------- PL2_AVS_IEF_8x4.asm ----------
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#include "AVS_IEF.inc"
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//------------------------------------------------------------------------------
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// 2 sampler reads for 8x8 Y each
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// 1 sampler read for 8x8 U and 8x8 V (NV11\NV12 input surface)
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//------------------------------------------------------------------------------
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#include "AVS_SetupFirstBlock.asm"
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// Enable green channel only
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mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud
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mov (16) mAVS_8x8_HDR.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
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send (1) uwAVS_RESPONSE(0)<1> mAVS_8x8_HDR udDUMMY_NULL nSMPL_ENGINE nAVS_MSG_DSC_1CH+nSI_SRC_Y+nBI_CURRENT_SRC_Y
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// 8x8 U and V sampling
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// Enable red and blue channels
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//Only 8x4 wil be used
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mov (1) rAVS_8x8_HDR.2:ud nAVS_RED_BLUE_CHANNELS:ud
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// Calculate Chroma Step Size:
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// for H direction: 16 Luma samples are covered by 8 Chroma samples. Thus Chroma_Step_X = 2 * Luma_Step_X
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// for V direction: 8 Luma samples are covered by 8 Chroma samples. Thus Chroma_Step_Y = Luma_Step_Y
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mul (1) rAVS_PAYLOAD.1:f fVIDEO_STEP_X:f 2.0:f // Step X for chroma
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mov (16) mAVS_8x8_HDR_UV.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
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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
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// Return U and V in 8 GRFs
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#include "AVS_SetupSecondBlock.asm"
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// Enable green channel only
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mov (1) rAVS_8x8_HDR.2:ud nAVS_GREEN_CHANNEL_ONLY:ud
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mov (16) mAVS_8x8_HDR.0:ud rAVS_8x8_HDR.0<8;8,1>:ud // Copy msg header and payload mirrors to MRFs
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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
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//------------------------------------------------------------------------------
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// Unpacking sampler reads to 4:2:0 internal planar
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//------------------------------------------------------------------------------
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#include "PL2_AVS_IEF_Unpack_8x4.asm"