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/*
* All Video Processing kernels
* Copyright © <2010>, 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
*
* This file was originally licensed under the following license
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Module name: RGB16x8_Save_RGB16.asm
//
// Save packed RGB565 frame data block of size 16x8
//
// To save 16x8 block (32x8 byte layout for RGB565) we need 1 send instruction
// -----
// | 1 |
// -----
#include "RGB16x8_Save_RGB16.inc"
//convert 32 bit RGB to 16 bit RGB
// Truncate A8R8G8B8 to A6R5G6B5 within byte.
// That is keeping 5 MSB of R and B, and 6 MSB of G.
$for (0, 0; <nY_NUM_OF_ROWS; 1, 2) {
shr uwCSC_TEMP(%1,0)<1> ubDEST_ARGB(%2,0)<32;8,4> 3:w // B >> 3
shl (16) uwTEMP_RGB16(0)<1> uwDEST_ARGB(%2,1)<16;8,2> 8:w // R << 8
and (16) uwTEMP_RGB16(0)<1> uwTEMP_RGB16(0) 0xF800:uw
or (16) uwCSC_TEMP(%1,0)<1> uwCSC_TEMP(%1,0)<16;16,1> uwTEMP_RGB16(0)
shr (16) uwTEMP_RGB16(0)<1> uwDEST_ARGB(%2,0)<16;8,2> 5:w // G >> 5
and (16) uwTEMP_RGB16(0)<1> uwTEMP_RGB16(0) 0x07E0:uw
or (16) uwCSC_TEMP(%1,0)<1> uwCSC_TEMP(%1,0)<16;16,1> uwTEMP_RGB16(0)
}
mov (2) rMSGSRC.0<1>:d wORIX<2;2,1>:w // Block origin (1st quadrant)
shl (1) rMSGSRC.0<1>:d wORIX<0;1,0>:w 1:w // H. block origin need to be doubled for byte offset
mov (1) rMSGSRC.2<1>:ud nDPW_BLOCK_SIZE_RGB16:ud // Block width and height (32x8)
mov (8) mMSGHDR<1>:ud rMSGSRC<8;8,1>:ud
//Use the mask to determine which pixels shouldn't be over-written
and (1) acc0.0<1>:ud udBLOCK_MASK<0;1,0>:ud 0x00FFFFFF:ud
cmp.ge.f0.0(1) dNULLREG acc0.0<0;1,0>:ud 0x00FFFFFF:ud //Check if all pixels in the block need to be modified
(f0.0) jmpi WriteRGB16ToDataPort
//If mask is not all 1's, then load the entire 32x8 block
//so that only those bytes may be modified that need to be (using the mask)
// Load 32x8 packed RGB565 -----------------------------------------------------
send (8) udSRC_RGB16(0)<1> mMSGHDR udDUMMY_NULL nDATAPORT_READ nDPMR_MSGDSC+nDPR_MSG_SIZE_RGB16+nBI_DESTINATION_RGB:ud
mov (8) mMSGHDR<1>:ud rMSGSRC<8;8,1>:ud
//Merge the data
mov (1) f0.0:uw ubBLOCK_MASK_V:ub //Load the mask on flag reg
(f0.0) mov (8) rMASK_TEMP<1>:uw uwBLOCK_MASK_H:uw //use sel instruction - vK
(-f0.0) mov (8) rMASK_TEMP<1>:uw 0:uw
$for(0; <nY_NUM_OF_ROWS; 1) {
mov (1) f0.1:uw uwMASK_TEMP(0,%1)<0;1,0>
(-f0.1) mov (16) uwCSC_TEMP(%1)<1> uwSRC_RGB16(%1)
}
WriteRGB16ToDataPort:
// Move packed data to MRF and output
$for(0; <nY_NUM_OF_ROWS; 1) {
mov (8) mudMSGPAYLOAD(%1)<1> udCSC_TEMP(%1)
}
send (8) dNULLREG mMSGHDR udDUMMY_NULL nDATAPORT_WRITE nDPMW_MSGDSC+nDPW_MSG_SIZE_RGB16+nBI_DESTINATION_RGB:ud
// End of RGB16x8_Save_RGB16
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