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YUV420查表法高效、无失真的转换为RGB32格式

时间:2014-11-30 17:13:46      阅读:758      评论:0      收藏:0      [点我收藏+]

标签:yuv420 rgb32 查表法 源码 arm

    YUV格式有两大类:planar和packed。planar的YUV格式,先连续存储所有像素点的Y,紧接着存储所有像素点的U,随后是所有像素点的V,这里所讲述的就是这中存储格式的;packed的YUV格式,每个像素点的Y,U,V是连续交叉存储的。

    色彩空间转换主要有三种方法,1、整点运算,即通过公式对每个点进行计算,速度超慢,基本只有在PC下才能够运行;2、查表法,即由由YUV直接查表得到对应的RGB值;3、通过汇编指令,可参考http://blog.csdn.net/alien75/article/details/7377179

    本文主要介绍第二种方法,经本人使用测试,第二种方法效率可以满足本人需求,且图片转换后颜色无失真、走样等情况发生,而第一种方法,在网上搜到的很多代码装换效率低不说,转换后的图像颜色都存在很严重的失真现象。

    如下代码也是从一开源代码中扣出来的,只是从YUV420转换到RGB32格式,该转换方法在 ARM926EJ-S这种CPU下运算效率还是很高的。

void yuv420_2_rgb8888(uint8_t  *dst_ptr_,
                const uint8_t  *y_ptr,
                const uint8_t  *u_ptr,
                const uint8_t  *v_ptr,
                      int32_t   width,
                      int32_t   height)
{
    uint32_t *tables = yuv2rgb565_table;
    uint32_t *dst_ptr = (uint32_t *)(void *)dst_ptr_;
    int32_t   y_span = width;
    int32_t   uv_span = width>>1;
    int32_t   dst_span = width<<2;
    dst_span >>= 2;    

    height -= 1;
    while (height > 0)
    {
        height -= width<<16;
        height += 1<<16;
        while (height < 0)
        {
            /* Do 2 column pairs */
            uint32_t uv, y0, y1;

            uv  = READUV(*u_ptr++,*v_ptr++);
            y1  = uv + READY(y_ptr[y_span]);
            y0  = uv + READY(*y_ptr++);
            FIXUP(y1);
            FIXUP(y0);
            STORE(y1, dst_ptr[dst_span]);
            STORE(y0, *dst_ptr++);
            y1  = uv + READY(y_ptr[y_span]);
            y0  = uv + READY(*y_ptr++);
            FIXUP(y1);
            FIXUP(y0);
            STORE(y1, dst_ptr[dst_span]);
            STORE(y0, *dst_ptr++);
            height += (2<<16);
        }
        if ((height>>16) == 0)
        {
            /* Trailing column pair */
            uint32_t uv, y0, y1;

            uv = READUV(*u_ptr,*v_ptr);
            y1 = uv + READY(y_ptr[y_span]);
            y0 = uv + READY(*y_ptr++);
            FIXUP(y1);
            FIXUP(y0);
            STORE(y0, dst_ptr[dst_span]);
            STORE(y1, *dst_ptr++);
        }
        dst_ptr += dst_span*2-width;
        y_ptr   += y_span*2-width;
        u_ptr   += uv_span-(width>>1);
        v_ptr   += uv_span-(width>>1);
        height = (height<<16)>>16;
        height -= 2;
    }
    if (height == 0)
    {
        /* Trail row */
        height -= width<<16;
        height += 1<<16;
        while (height < 0)
        {
            /* Do a row pair */
            uint32_t uv, y0, y1;

            uv  = READUV(*u_ptr++,*v_ptr++);
            y1  = uv + READY(*y_ptr++);
            y0  = uv + READY(*y_ptr++);
            FIXUP(y1);
            FIXUP(y0);
            STORE(y1, *dst_ptr++);
            STORE(y0, *dst_ptr++);
            height += (2<<16);
        }
        if ((height>>16) == 0)
        {
            /* Trailing pix */
            uint32_t uv, y0;

            uv = READUV(*u_ptr++,*v_ptr++);
            y0 = uv + READY(*y_ptr++);
            FIXUP(y0);
            STORE(y0, *dst_ptr++);
        }
    }
}

数据表

yuv2rgb565_table
/* YUV-> RGB conversion code.
 *
 * Copyright (C) 2011 Robin Watts (robin@wss.co.uk) for Pinknoise
 * Productions Ltd.
 *
 * Licensed under the BSD license. See ‘COPYING‘ for details of
 * (non-)warranty.
 *
 */

/* For BREW or Symbian you might need to make this static const rather than
 * just const, and introduce a function to get the address. */
enum
{
    FLAGS         = 0x40080100
};

#define READUV(U,V) (tables[256 + (U)] + tables[512 + (V)])
#define READY(Y)    tables[Y]
#define FIXUP(Y)                 do {                                 int tmp = (Y) & FLAGS;           if (tmp != 0)                    {                                    tmp  -= tmp>>8;                  (Y)  |= tmp;                     tmp   = FLAGS & ~(Y>>1);         (Y)  += tmp>>8;              }                            } while (0 == 1)

#define STORE(Y,DSTPTR)     do {                            (DSTPTR) = (Y & 0xFF) | (0xFF00 & (Y>>14)) | (0xFF0000 & (Y<<5));} while (0 == 1)


const uint32_t yuv2rgb565_table[256*3] =
{
	/* y_table */
        0x7FFFFFEDU,
        0x7FFFFFEFU,
        0x7FFFFFF0U,
        0x7FFFFFF1U,
        0x7FFFFFF2U,
        0x7FFFFFF3U,
        0x7FFFFFF4U,
        0x7FFFFFF6U,
        0x7FFFFFF7U,
        0x7FFFFFF8U,
        0x7FFFFFF9U,
        0x7FFFFFFAU,
        0x7FFFFFFBU,
        0x7FFFFFFDU,
        0x7FFFFFFEU,
        0x7FFFFFFFU,
        0x80000000U,
        0x80400801U,
        0x80A01002U,
        0x80E01803U,
        0x81202805U,
        0x81803006U,
        0x81C03807U,
        0x82004008U,
        0x82604809U,
        0x82A0500AU,
        0x82E0600CU,
        0x8340680DU,
        0x8380700EU,
        0x83C0780FU,
        0x84208010U,
        0x84608811U,
        0x84A09813U,
        0x8500A014U,
        0x8540A815U,
        0x8580B016U,
        0x85E0B817U,
        0x8620C018U,
        0x8660D01AU,
        0x86C0D81BU,
        0x8700E01CU,
        0x8740E81DU,
        0x87A0F01EU,
        0x87E0F81FU,
        0x88210821U,
        0x88811022U,
        0x88C11823U,
        0x89012024U,
        0x89412825U,
        0x89A13026U,
        0x89E14028U,
        0x8A214829U,
        0x8A81502AU,
        0x8AC1582BU,
        0x8B01602CU,
        0x8B61682DU,
        0x8BA1782FU,
        0x8BE18030U,
        0x8C418831U,
        0x8C819032U,
        0x8CC19833U,
        0x8D21A034U,
        0x8D61B036U,
        0x8DA1B837U,
        0x8E01C038U,
        0x8E41C839U,
        0x8E81D03AU,
        0x8EE1D83BU,
        0x8F21E83DU,
        0x8F61F03EU,
        0x8FC1F83FU,
        0x90020040U,
        0x90420841U,
        0x90A21042U,
        0x90E22044U,
        0x91222845U,
        0x91823046U,
        0x91C23847U,
        0x92024048U,
        0x92624849U,
        0x92A2504AU,
        0x92E2604CU,
        0x9342684DU,
        0x9382704EU,
        0x93C2784FU,
        0x94228050U,
        0x94628851U,
        0x94A29853U,
        0x9502A054U,
        0x9542A855U,
        0x9582B056U,
        0x95E2B857U,
        0x9622C058U,
        0x9662D05AU,
        0x96C2D85BU,
        0x9702E05CU,
        0x9742E85DU,
        0x97A2F05EU,
        0x97E2F85FU,
        0x98230861U,
        0x98831062U,
        0x98C31863U,
        0x99032064U,
        0x99632865U,
        0x99A33066U,
        0x99E34068U,
        0x9A434869U,
        0x9A83506AU,
        0x9AC3586BU,
        0x9B23606CU,
        0x9B63686DU,
        0x9BA3786FU,
        0x9BE38070U,
        0x9C438871U,
        0x9C839072U,
        0x9CC39873U,
        0x9D23A074U,
        0x9D63B076U,
        0x9DA3B877U,
        0x9E03C078U,
        0x9E43C879U,
        0x9E83D07AU,
        0x9EE3D87BU,
        0x9F23E87DU,
        0x9F63F07EU,
        0x9FC3F87FU,
        0xA0040080U,
        0xA0440881U,
        0xA0A41082U,
        0xA0E42084U,
        0xA1242885U,
        0xA1843086U,
        0xA1C43887U,
        0xA2044088U,
        0xA2644889U,
        0xA2A4588BU,
        0xA2E4608CU,
        0xA344688DU,
        0xA384708EU,
        0xA3C4788FU,
        0xA4248090U,
        0xA4649092U,
        0xA4A49893U,
        0xA504A094U,
        0xA544A895U,
        0xA584B096U,
        0xA5E4B897U,
        0xA624C098U,
        0xA664D09AU,
        0xA6C4D89BU,
        0xA704E09CU,
        0xA744E89DU,
        0xA7A4F09EU,
        0xA7E4F89FU,
        0xA82508A1U,
        0xA88510A2U,
        0xA8C518A3U,
        0xA90520A4U,
        0xA96528A5U,
        0xA9A530A6U,
        0xA9E540A8U,
        0xAA4548A9U,
        0xAA8550AAU,
        0xAAC558ABU,
        0xAB2560ACU,
        0xAB6568ADU,
        0xABA578AFU,
        0xAC0580B0U,
        0xAC4588B1U,
        0xAC8590B2U,
        0xACE598B3U,
        0xAD25A0B4U,
        0xAD65B0B6U,
        0xADA5B8B7U,
        0xAE05C0B8U,
        0xAE45C8B9U,
        0xAE85D0BAU,
        0xAEE5D8BBU,
        0xAF25E8BDU,
        0xAF65F0BEU,
        0xAFC5F8BFU,
        0xB00600C0U,
        0xB04608C1U,
        0xB0A610C2U,
        0xB0E620C4U,
        0xB12628C5U,
        0xB18630C6U,
        0xB1C638C7U,
        0xB20640C8U,
        0xB26648C9U,
        0xB2A658CBU,
        0xB2E660CCU,
        0xB34668CDU,
        0xB38670CEU,
        0xB3C678CFU,
        0xB42680D0U,
        0xB46690D2U,
        0xB4A698D3U,
        0xB506A0D4U,
        0xB546A8D5U,
        0xB586B0D6U,
        0xB5E6B8D7U,
        0xB626C8D9U,
        0xB666D0DAU,
        0xB6C6D8DBU,
        0xB706E0DCU,
        0xB746E8DDU,
        0xB7A6F0DEU,
        0xB7E6F8DFU,
        0xB82708E1U,
        0xB88710E2U,
        0xB8C718E3U,
        0xB90720E4U,
        0xB96728E5U,
        0xB9A730E6U,
        0xB9E740E8U,
        0xBA4748E9U,
        0xBA8750EAU,
        0xBAC758EBU,
        0xBB2760ECU,
        0xBB6768EDU,
        0xBBA778EFU,
        0xBC0780F0U,
        0xBC4788F1U,
        0xBC8790F2U,
        0xBCE798F3U,
        0xBD27A0F4U,
        0xBD67B0F6U,
        0xBDC7B8F7U,
        0xBE07C0F8U,
        0xBE47C8F9U,
        0xBEA7D0FAU,
        0xBEE7D8FBU,
        0xBF27E8FDU,
        0xBF87F0FEU,
        0xBFC7F8FFU,
        0xC0080100U,
        0xC0480901U,
        0xC0A81102U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
        0xC0E82104U,
	/* u_table */
        0x0C400103U,
        0x0C200105U,
        0x0C200107U,
        0x0C000109U,
        0x0BE0010BU,
        0x0BC0010DU,
        0x0BA0010FU,
        0x0BA00111U,
        0x0B800113U,
        0x0B600115U,
        0x0B400117U,
        0x0B400119U,
        0x0B20011BU,
        0x0B00011DU,
        0x0AE0011FU,
        0x0AE00121U,
        0x0AC00123U,
        0x0AA00125U,
        0x0A800127U,
        0x0A600129U,
        0x0A60012BU,
        0x0A40012DU,
        0x0A20012FU,
        0x0A000131U,
        0x0A000132U,
        0x09E00134U,
        0x09C00136U,
        0x09A00138U,
        0x09A0013AU,
        0x0980013CU,
        0x0960013EU,
        0x09400140U,
        0x09400142U,
        0x09200144U,
        0x09000146U,
        0x08E00148U,
        0x08C0014AU,
        0x08C0014CU,
        0x08A0014EU,
        0x08800150U,
        0x08600152U,
        0x08600154U,
        0x08400156U,
        0x08200158U,
        0x0800015AU,
        0x0800015CU,
        0x07E0015EU,
        0x07C00160U,
        0x07A00162U,
        0x07A00164U,
        0x07800166U,
        0x07600168U,
        0x0740016AU,
        0x0720016CU,
        0x0720016EU,
        0x07000170U,
        0x06E00172U,
        0x06C00174U,
        0x06C00176U,
        0x06A00178U,
        0x0680017AU,
        0x0660017CU,
        0x0660017EU,
        0x06400180U,
        0x06200182U,
        0x06000184U,
        0x05E00185U,
        0x05E00187U,
        0x05C00189U,
        0x05A0018BU,
        0x0580018DU,
        0x0580018FU,
        0x05600191U,
        0x05400193U,
        0x05200195U,
        0x05200197U,
        0x05000199U,
        0x04E0019BU,
        0x04C0019DU,
        0x04C0019FU,
        0x04A001A1U,
        0x048001A3U,
        0x046001A5U,
        0x044001A7U,
        0x044001A9U,
        0x042001ABU,
        0x040001ADU,
        0x03E001AFU,
        0x03E001B1U,
        0x03C001B3U,
        0x03A001B5U,
        0x038001B7U,
        0x038001B9U,
        0x036001BBU,
        0x034001BDU,
        0x032001BFU,
        0x032001C1U,
        0x030001C3U,
        0x02E001C5U,
        0x02C001C7U,
        0x02A001C9U,
        0x02A001CBU,
        0x028001CDU,
        0x026001CFU,
        0x024001D1U,
        0x024001D3U,
        0x022001D5U,
        0x020001D7U,
        0x01E001D8U,
        0x01E001DAU,
        0x01C001DCU,
        0x01A001DEU,
        0x018001E0U,
        0x016001E2U,
        0x016001E4U,
        0x014001E6U,
        0x012001E8U,
        0x010001EAU,
        0x010001ECU,
        0x00E001EEU,
        0x00C001F0U,
        0x00A001F2U,
        0x00A001F4U,
        0x008001F6U,
        0x006001F8U,
        0x004001FAU,
        0x004001FCU,
        0x002001FEU,
        0x00000200U,
        0xFFE00202U,
        0xFFC00204U,
        0xFFC00206U,
        0xFFA00208U,
        0xFF80020AU,
        0xFF60020CU,
        0xFF60020EU,
        0xFF400210U,
        0xFF200212U,
        0xFF000214U,
        0xFF000216U,
        0xFEE00218U,
        0xFEC0021AU,
        0xFEA0021CU,
        0xFEA0021EU,
        0xFE800220U,
        0xFE600222U,
        0xFE400224U,
        0xFE200226U,
        0xFE200228U,
        0xFE000229U,
        0xFDE0022BU,
        0xFDC0022DU,
        0xFDC0022FU,
        0xFDA00231U,
        0xFD800233U,
        0xFD600235U,
        0xFD600237U,
        0xFD400239U,
        0xFD20023BU,
        0xFD00023DU,
        0xFCE0023FU,
        0xFCE00241U,
        0xFCC00243U,
        0xFCA00245U,
        0xFC800247U,
        0xFC800249U,
        0xFC60024BU,
        0xFC40024DU,
        0xFC20024FU,
        0xFC200251U,
        0xFC000253U,
        0xFBE00255U,
        0xFBC00257U,
        0xFBC00259U,
        0xFBA0025BU,
        0xFB80025DU,
        0xFB60025FU,
        0xFB400261U,
        0xFB400263U,
        0xFB200265U,
        0xFB000267U,
        0xFAE00269U,
        0xFAE0026BU,
        0xFAC0026DU,
        0xFAA0026FU,
        0xFA800271U,
        0xFA800273U,
        0xFA600275U,
        0xFA400277U,
        0xFA200279U,
        0xFA20027BU,
        0xFA00027CU,
        0xF9E0027EU,
        0xF9C00280U,
        0xF9A00282U,
        0xF9A00284U,
        0xF9800286U,
        0xF9600288U,
        0xF940028AU,
        0xF940028CU,
        0xF920028EU,
        0xF9000290U,
        0xF8E00292U,
        0xF8E00294U,
        0xF8C00296U,
        0xF8A00298U,
        0xF880029AU,
        0xF860029CU,
        0xF860029EU,
        0xF84002A0U,
        0xF82002A2U,
        0xF80002A4U,
        0xF80002A6U,
        0xF7E002A8U,
        0xF7C002AAU,
        0xF7A002ACU,
        0xF7A002AEU,
        0xF78002B0U,
        0xF76002B2U,
        0xF74002B4U,
        0xF74002B6U,
        0xF72002B8U,
        0xF70002BAU,
        0xF6E002BCU,
        0xF6C002BEU,
        0xF6C002C0U,
        0xF6A002C2U,
        0xF68002C4U,
        0xF66002C6U,
        0xF66002C8U,
        0xF64002CAU,
        0xF62002CCU,
        0xF60002CEU,
        0xF60002CFU,
        0xF5E002D1U,
        0xF5C002D3U,
        0xF5A002D5U,
        0xF5A002D7U,
        0xF58002D9U,
        0xF56002DBU,
        0xF54002DDU,
        0xF52002DFU,
        0xF52002E1U,
        0xF50002E3U,
        0xF4E002E5U,
        0xF4C002E7U,
        0xF4C002E9U,
        0xF4A002EBU,
        0xF48002EDU,
        0xF46002EFU,
        0xF46002F1U,
        0xF44002F3U,
        0xF42002F5U,
        0xF40002F7U,
        0xF3E002F9U,
        0xF3E002FBU,
	/* v_table */
        0x1A09A000U,
        0x19E9A800U,
        0x19A9B800U,
        0x1969C800U,
        0x1949D000U,
        0x1909E000U,
        0x18C9E800U,
        0x18A9F800U,
        0x186A0000U,
        0x182A1000U,
        0x180A2000U,
        0x17CA2800U,
        0x17AA3800U,
        0x176A4000U,
        0x172A5000U,
        0x170A6000U,
        0x16CA6800U,
        0x168A7800U,
        0x166A8000U,
        0x162A9000U,
        0x160AA000U,
        0x15CAA800U,
        0x158AB800U,
        0x156AC000U,
        0x152AD000U,
        0x14EAE000U,
        0x14CAE800U,
        0x148AF800U,
        0x146B0000U,
        0x142B1000U,
        0x13EB2000U,
        0x13CB2800U,
        0x138B3800U,
        0x134B4000U,
        0x132B5000U,
        0x12EB6000U,
        0x12CB6800U,
        0x128B7800U,
        0x124B8000U,
        0x122B9000U,
        0x11EBA000U,
        0x11ABA800U,
        0x118BB800U,
        0x114BC000U,
        0x112BD000U,
        0x10EBE000U,
        0x10ABE800U,
        0x108BF800U,
        0x104C0000U,
        0x100C1000U,
        0x0FEC2000U,
        0x0FAC2800U,
        0x0F8C3800U,
        0x0F4C4000U,
        0x0F0C5000U,
        0x0EEC5800U,
        0x0EAC6800U,
        0x0E6C7800U,
        0x0E4C8000U,
        0x0E0C9000U,
        0x0DEC9800U,
        0x0DACA800U,
        0x0D6CB800U,
        0x0D4CC000U,
        0x0D0CD000U,
        0x0CCCD800U,
        0x0CACE800U,
        0x0C6CF800U,
        0x0C4D0000U,
        0x0C0D1000U,
        0x0BCD1800U,
        0x0BAD2800U,
        0x0B6D3800U,
        0x0B2D4000U,
        0x0B0D5000U,
        0x0ACD5800U,
        0x0AAD6800U,
        0x0A6D7800U,
        0x0A2D8000U,
        0x0A0D9000U,
        0x09CD9800U,
        0x098DA800U,
        0x096DB800U,
        0x092DC000U,
        0x090DD000U,
        0x08CDD800U,
        0x088DE800U,
        0x086DF800U,
        0x082E0000U,
        0x07EE1000U,
        0x07CE1800U,
        0x078E2800U,
        0x076E3800U,
        0x072E4000U,
        0x06EE5000U,
        0x06CE5800U,
        0x068E6800U,
        0x064E7800U,
        0x062E8000U,
        0x05EE9000U,
        0x05CE9800U,
        0x058EA800U,
        0x054EB800U,
        0x052EC000U,
        0x04EED000U,
        0x04AED800U,
        0x048EE800U,
        0x044EF000U,
        0x042F0000U,
        0x03EF1000U,
        0x03AF1800U,
        0x038F2800U,
        0x034F3000U,
        0x030F4000U,
        0x02EF5000U,
        0x02AF5800U,
        0x028F6800U,
        0x024F7000U,
        0x020F8000U,
        0x01EF9000U,
        0x01AF9800U,
        0x016FA800U,
        0x014FB000U,
        0x010FC000U,
        0x00EFD000U,
        0x00AFD800U,
        0x006FE800U,
        0x004FF000U,
        0x00100000U,
        0xFFD01000U,
        0xFFB01800U,
        0xFF702800U,
        0xFF303000U,
        0xFF104000U,
        0xFED05000U,
        0xFEB05800U,
        0xFE706800U,
        0xFE307000U,
        0xFE108000U,
        0xFDD09000U,
        0xFD909800U,
        0xFD70A800U,
        0xFD30B000U,
        0xFD10C000U,
        0xFCD0D000U,
        0xFC90D800U,
        0xFC70E800U,
        0xFC30F000U,
        0xFBF10000U,
        0xFBD11000U,
        0xFB911800U,
        0xFB712800U,
        0xFB313000U,
        0xFAF14000U,
        0xFAD14800U,
        0xFA915800U,
        0xFA516800U,
        0xFA317000U,
        0xF9F18000U,
        0xF9D18800U,
        0xF9919800U,
        0xF951A800U,
        0xF931B000U,
        0xF8F1C000U,
        0xF8B1C800U,
        0xF891D800U,
        0xF851E800U,
        0xF831F000U,
        0xF7F20000U,
        0xF7B20800U,
        0xF7921800U,
        0xF7522800U,
        0xF7123000U,
        0xF6F24000U,
        0xF6B24800U,
        0xF6925800U,
        0xF6526800U,
        0xF6127000U,
        0xF5F28000U,
        0xF5B28800U,
        0xF5729800U,
        0xF552A800U,
        0xF512B000U,
        0xF4F2C000U,
        0xF4B2C800U,
        0xF472D800U,
        0xF452E800U,
        0xF412F000U,
        0xF3D30000U,
        0xF3B30800U,
        0xF3731800U,
        0xF3532800U,
        0xF3133000U,
        0xF2D34000U,
        0xF2B34800U,
        0xF2735800U,
        0xF2336800U,
        0xF2137000U,
        0xF1D38000U,
        0xF1B38800U,
        0xF1739800U,
        0xF133A800U,
        0xF113B000U,
        0xF0D3C000U,
        0xF093C800U,
        0xF073D800U,
        0xF033E000U,
        0xF013F000U,
        0xEFD40000U,
        0xEF940800U,
        0xEF741800U,
        0xEF342000U,
        0xEEF43000U,
        0xEED44000U,
        0xEE944800U,
        0xEE745800U,
        0xEE346000U,
        0xEDF47000U,
        0xEDD48000U,
        0xED948800U,
        0xED549800U,
        0xED34A000U,
        0xECF4B000U,
        0xECD4C000U,
        0xEC94C800U,
        0xEC54D800U,
        0xEC34E000U,
        0xEBF4F000U,
        0xEBB50000U,
        0xEB950800U,
        0xEB551800U,
        0xEB352000U,
        0xEAF53000U,
        0xEAB54000U,
        0xEA954800U,
        0xEA555800U,
        0xEA156000U,
        0xE9F57000U,
        0xE9B58000U,
        0xE9958800U,
        0xE9559800U,
        0xE915A000U,
        0xE8F5B000U,
        0xE8B5C000U,
        0xE875C800U,
        0xE855D800U,
        0xE815E000U,
        0xE7F5F000U,
        0xE7B60000U,
        0xE7760800U,
        0xE7561800U,
        0xE7162000U,
        0xE6D63000U,
        0xE6B64000U,
        0xE6764800U,
        0xE6365800U
};

本文出自 “大师兄” 博客,请务必保留此出处http://9662841.blog.51cto.com/9652841/1584654

YUV420查表法高效、无失真的转换为RGB32格式

标签:yuv420 rgb32 查表法 源码 arm

原文地址:http://9662841.blog.51cto.com/9652841/1584654

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