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b27288eaa7
testにjackalコンポーネント負荷確認用のyuv2rgbの追加。 git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/TwlIPL/trunk@1901 b08762b0-b915-fc4b-9d8c-17b2551a87ff
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
// 中身をいじってある。
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/*---------------------------------------------------------------------------*
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Project: TwlSDK - YUV2RGB
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File: cpu_yuv2rgb.c
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Copyright 2008 Nintendo. All rights reserved.
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These coded instructions, statements, and computer programs contain
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proprietary information of Nintendo of America Inc. and/or Nintendo
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Company Ltd., and are protected by Federal copyright law. They may
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not be disclosed to third parties or copied or duplicated in any form,
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in whole or in part, without the prior written consent of Nintendo.
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$Date:: $
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$Rev:$
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$Author:$
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*---------------------------------------------------------------------------*/
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#include <twl.h>
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#include "yuv2rgb.h"
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/*---------------------------------------------------------------------------*
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型定義
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*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*
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関数宣言
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*---------------------------------------------------------------------------*/
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u32 yuv2rgb16( const void* src, void* dest, u32 pixels );
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/*---------------------------------------------------------------------------*
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内部関数定義
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*---------------------------------------------------------------------------*/
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static inline int r_diff( u8 v )
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{
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// return (1402 * ( v - 128 )) / 1000;
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return (11760828/*.416*/ * ( v - 128)) >> 23;
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}
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static inline int g_diff( u8 u, u8 v )
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{
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// return (-344 * ( u - 128 ) -714 * ( v - 128 )) / 1000;
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return (-2885681/*.152*/ * ( u - 128 ) -5989466/*.112*/ * ( v - 128 )) >> 23;
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}
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static inline int b_diff( u8 u )
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{
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// return (1772 * ( u - 128 )) / 1000;
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return (14864613/*.376*/ * ( u - 128 )) >> 23;
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}
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static inline int trim( int e )
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{
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return e < 0 ? 0 : ( e > 255 ? 255 : e);
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}
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/*---------------------------------------------------------------------------*
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Name: CpuYuv2Rgb
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Description: YUV->RGB変換を行います(CPUバージョン）
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Arguments: src : input data adress (YUV)
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dest : output data adress (RGB)
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pixels : num of pixel
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Returns: None
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*---------------------------------------------------------------------------*/
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u32 CpuYuv2Rgb( const void* src, void* dest, u32 pixels )
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{
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OSTick begin;
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u8* yuyv = (u8*)src;
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u32* rgb = (u32*)dest;
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u32 limit = pixels >> 1;
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u32 i;
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begin = OS_GetTick();
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for (i = 0; i < limit; i++)
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{
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u8 y1 = *yuyv++;
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u8 u = *yuyv++;
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u8 y2 = *yuyv++;
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u8 v = *yuyv++;
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*rgb++ = (u32)(
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0xffffffff
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//0x83e083e0 // G only
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& (
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0x80008000 |
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( ( trim( y2 + b_diff( u ) ) & 0xF8 ) << 23) |
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( ( trim( y2 + g_diff( u, v ) ) & 0xF8 ) << 18) |
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( ( trim( y2 + r_diff( v ) ) & 0xF8 ) << 13) |
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( ( trim( y1 + b_diff( u ) ) & 0xF8 ) << 7) |
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( ( trim( y1 + g_diff( u, v ) ) & 0xF8 ) << 2) |
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( ( trim( y1 + r_diff( v ) ) ) >> 3) ));
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}
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OS_Printf("total(555) = %d us\n", OS_TicksToMicroSeconds(OS_GetTick() - begin));
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return pixels * sizeof(RGBX16);
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}
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