#include "CCTextureUtils.h"


NS_CC_BEGIN

namespace backend { namespace PixelFormatUtils {
    
    //////////////////////////////////////////////////////////////////////////
    //convertor function
    
    // IIIIIIII -> RRRRRRRRGGGGGGGGGBBBBBBBB
    void convertI8ToRGB888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (size_t i = 0; i < dataLen; ++i)
        {
            *outData++ = data[i];     //R
            *outData++ = data[i];     //G
            *outData++ = data[i];     //B
        }
    }
    
    // IIIIIIIIAAAAAAAA -> RRRRRRRRGGGGGGGGBBBBBBBB
    void convertAI88ToRGB888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *outData++ = data[i];     //R
            *outData++ = data[i];     //G
            *outData++ = data[i];     //B
        }
    }
    
    // IIIIIIII -> RRRRRRRRGGGGGGGGGBBBBBBBBAAAAAAAA
    void convertI8ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (size_t i = 0; i < dataLen; ++i)
        {
            *outData++ = data[i];     //R
            *outData++ = data[i];     //G
            *outData++ = data[i];     //B
            *outData++ = 0xFF;        //A
        }
    }
    
    // IIIIIIIIAAAAAAAA -> RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA
    void convertAI88ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *outData++ = data[i];     //R
            *outData++ = data[i];     //G
            *outData++ = data[i];     //B
            *outData++ = data[i + 1]; //A
        }
    }
    
    // IIIIIIII -> RRRRRGGGGGGBBBBB
    void convertI8ToRGB565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i] & 0x00FC) << 3         //G
            | (data[i] & 0x00F8) >> 3;        //B
        }
    }
    
    // IIIIIIIIAAAAAAAA -> RRRRRGGGGGGBBBBB
    void convertAI88ToRGB565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i] & 0x00FC) << 3         //G
            | (data[i] & 0x00F8) >> 3;        //B
        }
    }
    
    // IIIIIIII -> RRRRGGGGBBBBAAAA
    void convertI8ToRGBA4444(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0x00F0) << 8    //R
            | (data[i] & 0x00F0) << 4             //G
            | (data[i] & 0x00F0)                  //B
            | 0x000F;                             //A
        }
    }
    
    // IIIIIIIIAAAAAAAA -> RRRRGGGGBBBBAAAA
    void convertAI88ToRGBA4444(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F0) << 8    //R
            | (data[i] & 0x00F0) << 4             //G
            | (data[i] & 0x00F0)                  //B
            | (data[i + 1] & 0x00F0) >> 4;          //A
        }
    }
    
    // IIIIIIIIAAAAAAAA -> BBBBBGGG GGGRRRR
    void convertAI88ToBGR565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t* out16 = (uint16_t*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i] & 0x00FC) << 3             //G
            | (data[i] & 0x00F8) >> 3;            //B
        }
    }
    
    // IIIIIIIIAAAAAAAA -> BBBBBGGG GGRRRRRA
    void convertAI88ToBGR5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t* out16 = (uint16_t*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F8) << 7    //R
            | (data[i] & 0x00F8) << 2             //G
            | (data[i] & 0x00F8) >> 3             //B
            | (data[i + 1] & 0x0080) << 8;          //A
        }
    }
    
    // IIIIIIIIAAAAAAAA -> AAAABBBB GGGGRRRR
    void convertAI88ToABGR4(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t* out16 = (uint16_t*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F0) << 8    //R
            | (data[i] & 0x00F0) << 4             //G
            | (data[i] & 0x00F0)                  //B
            | (data[i + 1] & 0x00F0) >> 4;        //A
        }
    }
    
    
    // IIIIIIII -> RRRRRGGGGGBBBBBA
    void convertI8ToRGB5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i] & 0x00F8) << 3         //G
            | (data[i] & 0x00F8) >> 2         //B
            | 0x0001;                         //A
        }
    }
    
    /// IIIIIIII -> BBBBBGGG GGRRRRRA
    void convertI8ToBGR5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *out16 = (uint16_t*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0xF8) << 7    //R
            | (data[i] & 0xF8) << 2             //G
            | (data[i] & 0xF8) >> 3             //B
            | 0x8000;                           //A
        }
    }
    
    // IIIIIIIII -> BBBBBGGG GGGRRRRR
    void convertI8ToBGR565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *out16 = (uint16_t*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0xF8) << 8    //R
            | (data[i] & 0xFC) << 3             //G
            | (data[i] & 0xF8) >> 3             //B
            ;
        }
    }
    
    // IIIIIIIII -> AAAABBBBB GGGGRRRR
    void convertI8ToABGR4(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *out16 = (uint16_t*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = (data[i] & 0xF0) << 8    //R
            | (data[i] & 0xF0) << 4             //G
            | (data[i] & 0xF0)                  //B
            | 0x000F;
        }
    }
    
    // IIIIIIIIAAAAAAAA -> RRRRRGGGGGBBBBBA
    void convertAI88ToRGB5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i] & 0x00F8) << 3         //G
            | (data[i] & 0x00F8) >> 2         //B
            | (data[i + 1] & 0x0080) >> 7;    //A
        }
    }
    
    // IIIIIIII -> IIIIIIIIAAAAAAAA
    void convertI8ToAI88(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (size_t i = 0; i < dataLen; ++i)
        {
            *out16++ = 0xFF00     //A
            | data[i];            //I
        }
    }
    
    // IIIIIIIIAAAAAAAA -> AAAAAAAA
    void convertAI88ToA8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (size_t i = 1; i < dataLen; i += 2)
        {
            *outData++ = data[i]; //A
        }
    }
    
    // IIIIIIIIAAAAAAAA -> IIIIIIII
    void convertAI88ToI8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 1; i < l; i += 2)
        {
            *outData++ = data[i]; //R
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA
    void convertRGB888ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *outData++ = data[i];         //R
            *outData++ = data[i + 1];     //G
            *outData++ = data[i + 2];     //B
            *outData++ = 0xFF;            //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> RRRRRRRRGGGGGGGGBBBBBBBB
    void convertRGBA8888ToRGB888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *outData++ = data[i];         //R
            *outData++ = data[i + 1];     //G
            *outData++ = data[i + 2];     //B
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> RRRRRGGGGGGBBBBB
    void convertRGB888ToRGB565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i + 1] & 0x00FC) << 3     //G
            | (data[i + 2] & 0x00F8) >> 3;    //B
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> RRRRRGGGGGGBBBBB
    void convertRGBA8888ToRGB565(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i + 1] & 0x00FC) << 3     //G
            | (data[i + 2] & 0x00F8) >> 3;    //B
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> AAAAAAAA
    void convertRGB888ToA8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *outData++ = (data[i] * 299 + data[i + 1] * 587 + data[i + 2] * 114 + 500) / 1000;  //A =  (R*299 + G*587 + B*114 + 500) / 1000
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> IIIIIIII
    void convertRGB888ToI8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *outData++ = (data[i] * 299 + data[i + 1] * 587 + data[i + 2] * 114 + 500) / 1000;  //I =  (R*299 + G*587 + B*114 + 500) / 1000
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> IIIIIIII
    void convertRGBA8888ToI8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *outData++ = (data[i] * 299 + data[i + 1] * 587 + data[i + 2] * 114 + 500) / 1000;  //I =  (R*299 + G*587 + B*114 + 500) / 1000
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> AAAAAAAA
    void convertRGBA8888ToA8(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *outData++ = data[i + 3]; //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> IIIIIIIIAAAAAAAA
    void convertRGB888ToAI88(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *outData++ = (data[i] * 299 + data[i + 1] * 587 + data[i + 2] * 114 + 500) / 1000;  //I =  (R*299 + G*587 + B*114 + 500) / 1000
            *outData++ = 0xFF;
        }
    }
    
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> IIIIIIIIAAAAAAAA
    void convertRGBA8888ToAI88(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *outData++ = (data[i] * 299 + data[i + 1] * 587 + data[i + 2] * 114 + 500) / 1000;  //I =  (R*299 + G*587 + B*114 + 500) / 1000
            *outData++ = data[i + 3];
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> RRRRGGGGBBBBAAAA
    void convertRGB888ToRGBA4444(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *out16++ = ((data[i] & 0x00F0) << 8           //R
                        | (data[i + 1] & 0x00F0) << 4     //G
                        | (data[i + 2] & 0xF0)            //B
                        | 0x0F);                         //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> RRRRGGGGBBBBAAAA
    void convertRGBA8888ToRGBA4444(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 3; i < l; i += 4)
        {
            *out16++ = (data[i] & 0x00F0) << 8    //R
            | (data[i + 1] & 0x00F0) << 4         //G
            | (data[i + 2] & 0xF0)                //B
            | (data[i + 3] & 0xF0) >> 4;         //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> RRRRRGGGGGBBBBBA
    void convertRGB888ToRGB5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 3)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i + 1] & 0x00F8) << 3     //G
            | (data[i + 2] & 0x00F8) >> 2     //B
            | 0x01;                          //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> BBBBBGGG GGGRRRRR
    void convertRGB888ToB5G6R5(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*) out;
        for(size_t i = 0;i < dataLen ; i += 3)
        {
            *outData++ = ((data[i] & 0xF8) << 8)|
            ((data[i + 1] &0xFC) << 3) |
            ((data[i + 2] & 0xF8)>> 3);
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> BBBBBGGG GGRRRRRA
    void convertRGB888ToBGR5A1(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*) out;
        for(size_t i = 0;i < dataLen ; i += 3)
        {
            *outData++ = ((data[i] & 0xF8) << 7) |
            ((data[i + 1] & 0xF8) << 2) |
            ((data[i + 2] &0xF8) >> 3) | 0x8000;
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBB -> AAAABBBB GGGGRRRR
    void convertRGB888ToABGR4(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*) out;
        for(size_t i = 0;i < dataLen ; i += 3)
        {
            *outData++ = ((data[i] & 0xF0) << 8) | //r
            ((data[i + 1] & 0xF0) << 4) |          //g
            ((data[i + 2] & 0xF0)) |               //b
            0x000F;                                //a
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> RRRRRGGG GGBBBBBA
    void convertRGBA8888ToRGB5A1(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        unsigned short* out16 = (unsigned short*)outData;
        for (ssize_t i = 0, l = dataLen - 2; i < l; i += 4)
        {
            *out16++ = (data[i] & 0x00F8) << 8    //R
            | (data[i + 1] & 0x00F8) << 3     //G
            | (data[i + 2] & 0x00F8) >> 2     //B
            | (data[i + 3] & 0x0080) >> 7;   //A
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> BBBBBGGG GGGRRRR
    void convertRGBA8888ToBGR565(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*)out;
        const size_t pixelCnt = dataLen / 4;
        for(size_t i=0;i < pixelCnt; i++ )
        {
            outData[i] = ((data[i*4 + 2] & 0xF8) >> 3) |     //b
            ((data[i * 4 + 1] & 0xFC ) << 3) |           //g
            (((data[i * 4 + 0] & 0xF8) << 8));             //r
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> AAAABBBB GGGGRRRR
    void convertRGBA8888ToABGR4(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*)out;
        for(size_t i=0;i < dataLen; i+=4 )
        {
            *outData++ = ((data[i] & 0xF0) << 8) |     //r
            ((data[i + 1] & 0xF0) << 4) |              //g
            ((data[i + 2] & 0xF0)) |                   //b
            ((data[i + 3] & 0xF0) >> 4);               //a
        }
    }
    
    // RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA -> BBBBBGGG GGRRRRRA
    void convertRGBA8888ToBGR5A1(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        uint16_t *outData = (uint16_t*)out;
        for(size_t i = 0; i < dataLen; i += 4)
        {
            *outData++ = ((data[i + 2] & 0xF8) >> 3)|     //b
            ((data[i + 1] & 0xF8 ) << 2) |                //g
            ((data[i + 0] & 0xF8 ) << 7) |                //r
            ((data[i + 3] & 0x80) << 8);                  //a
        }
    }
    
    
    void convertRGB5A1ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *inData = (uint16_t*)data;
        const size_t pixelLen = dataLen / 2;
        uint16_t pixel;
        for (size_t i = 0; i < pixelLen; i++)
        {
            pixel = inData[i];
            *outData++ = (pixel & (0x001F << 11)) >> 8;
            *outData++ = (pixel & (0x001F << 6)) >> 3;
            *outData++ = (pixel & (0x001F << 1)) << 2;
            *outData++ = (pixel & 0x0001) * 255;
        }
    }
    
    // ABBBBBGG GGGRRRRR  -> BBBBBGGG GGRRRRRA
    void convertRGB5A1ToBGR5A1(const unsigned char *data, size_t dataLen, unsigned char *out)
    {
        const size_t pixelLen = dataLen / 2;
        const uint16_t *inData = (uint16_t*) data;
        uint16_t *outData = (uint16_t*) out;
        uint16_t pixel;
        for (size_t i = 0; i < pixelLen; i++ )
        {
            pixel = inData[i];
            outData[i] = (pixel >> 1) | ((pixel & 0x0001) << 15);
        }
    }
    
    
    void convertRGB565ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *inData = (uint16_t*)data;
        const size_t pixelLen = dataLen / 2;
        uint16_t pixel;
        for (size_t i = 0; i < pixelLen; i++)
        {
            pixel = inData[i];
            *outData++ = (pixel & (0x001F << 11)) >> 8;
            *outData++ = (pixel & (0x003F << 5)) >> 3;
            *outData++ = (pixel & (0x001F)) << 3;
            *outData++ = 0xFF;
        }
    }
    
    // BBBBBGGG GGGRRRRR -> BBBGGG GGGRRRRR
    // void convertRGB565ToB5G6R5(const unsigned char *data, ssize_t dataLen, unsigned char *out)
    
    
    void convertRGBA4444ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        uint16_t *inData = (uint16_t*)data;
        const size_t pixelLen = dataLen / 2;
        uint16_t pixel;
        for (size_t i = 0; i < pixelLen; i++)
        {
            pixel = inData[i];
            *outData++ = ((pixel & 0xF000) >> 12) * 17;
            *outData++ = ((pixel & 0x0F00) >> 8) * 17;
            *outData++ = ((pixel & 0x00F0) >> 4) * 17;
            *outData++ = ((pixel & 0x000F) * 17);
        }
        
    }
    
    // AAAABBBBGGGGRRRR -> AAAABBBB GGGGRRRR
    //void convertRGBA4444ToABGR4444(const unsigned char *data, ssize_t dataLen, unsigned char *out)
    
    void convertA8ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        for (size_t i = 0; i < dataLen; i++)
        {
            *outData++ = 0;
            *outData++ = 0;
            *outData++ = 0;
            *outData++ = data[i];
        }
    }
    
    void convertBGRA8888ToRGBA8888(const unsigned char* data, size_t dataLen, unsigned char* outData)
    {
        const size_t pixelCounts = dataLen / 4;
        for (size_t i = 0; i < pixelCounts; i++)
        {
            *outData++ = data[i*4 + 2];
            *outData++ = data[i*4 + 1];
            *outData++ = data[i*4 + 0];
            *outData++ = data[i*4 + 3];
        }
    }
    
    // converter function end
    //////////////////////////////////////////////////////////////////////////
    
    
    
    cocos2d::backend::PixelFormat convertI8ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen*4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB888:
                *outDataLen = dataLen*3;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToRGB888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB565:
                *outDataLen = dataLen*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToRGB565(data, dataLen, *outData);
                break;
            case PixelFormat::AI88:
                *outDataLen = dataLen*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToAI88(data, dataLen, *outData);
                break;
            case PixelFormat::RGBA4444:
                *outDataLen = dataLen*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToRGBA4444(data, dataLen, *outData);
                break;
            case PixelFormat::RGB5A1:
                *outDataLen = dataLen*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToRGB5A1(data, dataLen, *outData);
                break;
            case PixelFormat::A8:
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                break;
            case PixelFormat::MTL_BGR5A1:
                *outDataLen = dataLen * 2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToBGR5A1(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_ABGR4:
                *outDataLen = dataLen * 2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToABGR4(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_B5G6R5:
                *outDataLen = dataLen * 2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertI8ToBGR565(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::I8)
                {
                    CCLOG("Can not convert image format PixelFormat::I8 to format ID:%d, we will use it's origin format PixelFormat::I8", static_cast<int>(format));
                }
                
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::I8;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertAI88ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB888:
                *outDataLen = dataLen/2*3;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToRGB888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB565:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToRGB565(data, dataLen, *outData);
                break;
            case PixelFormat::A8:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToA8(data, dataLen, *outData);
                break;
            case PixelFormat::I8:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToI8(data, dataLen, *outData);
                break;
            case PixelFormat::RGBA4444:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToRGBA4444(data, dataLen, *outData);
                break;
            case PixelFormat::RGB5A1:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToRGB5A1(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_ABGR4:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToABGR4(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_B5G6R5:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToBGR565(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_BGR5A1:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertAI88ToBGR5A1(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::AI88)
                {
                    CCLOG("Can not convert image format PixelFormat::AI88 to format ID:%d, we will use it's origin format PixelFormat::AI88", static_cast<int>(format));
                }
                
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::AI88;
                break;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertRGB888ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen/3*4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB565:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToRGB565(data, dataLen, *outData);
                break;
            case PixelFormat::A8:
                *outDataLen = dataLen/3;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToA8(data, dataLen, *outData);
                break;
            case PixelFormat::I8:
                *outDataLen = dataLen/3;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToI8(data, dataLen, *outData);
                break;
            case PixelFormat::AI88:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToAI88(data, dataLen, *outData);
                break;
            case PixelFormat::RGBA4444:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToRGBA4444(data, dataLen, *outData);
                break;
            case PixelFormat::RGB5A1:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToRGB5A1(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_B5G6R5:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToB5G6R5(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_BGR5A1:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToBGR5A1(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_ABGR4:
                *outDataLen = dataLen/3*2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB888ToABGR4(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGB888)
                {
                    CCLOG("Can not convert image format PixelFormat::RGB888 to format ID:%d, we will use it's origin format PixelFormat::RGB888", static_cast<int>(format));
                }
                
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGB888;
        }
        return format;
    }
    
    cocos2d::backend::PixelFormat convertRGBA8888ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        
        switch (format)
        {
            case PixelFormat::RGB888:
                *outDataLen = dataLen/4*3;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToRGB888(data, dataLen, *outData);
                break;
            case PixelFormat::RGB565:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToRGB565(data, dataLen, *outData);
                break;
            case PixelFormat::A8:
                *outDataLen = dataLen/4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToA8(data, dataLen, *outData);
                break;
            case PixelFormat::I8:
                *outDataLen = dataLen/4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToI8(data, dataLen, *outData);
                break;
            case PixelFormat::AI88:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToAI88(data, dataLen, *outData);
                break;
            case PixelFormat::RGBA4444:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToRGBA4444(data, dataLen, *outData);
                break;
            case PixelFormat::RGB5A1:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToRGB5A1(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_B5G6R5:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToBGR565(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_ABGR4:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToABGR4(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_BGR5A1:
                *outDataLen = dataLen/2;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA8888ToBGR5A1(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGBA8888)
                {
                    CCLOG("Can not convert image format PixelFormat::RGBA8888 to format ID:%d, we will use it's origin format PixelFormat::RGBA8888", static_cast<int>(format));
                }
                
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGBA8888;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertRGB5A1ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen/2*4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB5A1ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_BGR5A1:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB5A1ToBGR5A1(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGBA8888)
                {
                    CCLOG("Can not convert image format PixelFormat::RGB5A1 to format ID:%d, we will use it's origin format PixelFormat::RGB51A", static_cast<int>(format));
                }
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGBA8888;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertRGB565ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen/2*4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGB565ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_B5G6R5:
                *outDataLen = dataLen;
                *outData = (unsigned char *)data;
                // they are identical
                //convertRGB565ToB5G6R5(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGBA8888)
                {
                    CCLOG("Can not convert image format PixelFormat::RGB565 to format ID:%d, we will use it's origin format PixelFormat::RGB565", static_cast<int>(format));
                }
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGBA8888;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertA8ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen*4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertA8ToRGBA8888(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGBA8888)
                {
                    CCLOG("Can not convert image format PixelFormat::A8 to format ID:%d, we will use it's origin format PixelFormat::A8", static_cast<int>(format));
                }
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGBA8888;
        }
        
        return format;
    }
    
    cocos2d::backend::PixelFormat convertRGBA4444ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format)
        {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen/ 2 * 4;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertRGBA4444ToRGBA8888(data, dataLen, *outData);
                break;
            case PixelFormat::MTL_ABGR4:
                *outDataLen = dataLen;
                *outData = (unsigned char *)data;
                //convertRGBA4444ToABGR4444(data, dataLen, *outData);
                break;
            default:
                // unsupported conversion or don't need to convert
                if (format != PixelFormat::AUTO && format != PixelFormat::RGBA8888)
                {
                    CCLOG("Can not convert image format PixelFormat::RGBA444 to format ID:%d, we will use it's origin format PixelFormat::RGBA4444", static_cast<int>(format));
                }
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return PixelFormat::RGBA8888;
        }
        
        return format;
    }
    
    PixelFormat convertBGRA8888ToFormat(const unsigned char* data, size_t dataLen, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        switch (format) {
            case PixelFormat::RGBA8888:
                *outDataLen = dataLen;
                *outData = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
                convertBGRA8888ToRGBA8888(data, dataLen, *outData);
                break;
                
            default:
                break;
        }
        return format;
    }
    
    /*
     convert map:
     1.PixelFormat::RGBA8888
     2.PixelFormat::RGB888
     3.PixelFormat::RGB565
     4.PixelFormat::A8
     5.PixelFormat::I8
     6.PixelFormat::AI88
     7.PixelFormat::RGBA4444
     8.PixelFormat::RGB5A1
     
     gray(5) -> 1235678
     gray alpha(6) -> 12345678
     rgb(2) -> 1235678
     rgba(1) -> 12345678
     
     */
    cocos2d::backend::PixelFormat convertDataToFormat(const unsigned char* data, size_t dataLen, PixelFormat originFormat, PixelFormat format, unsigned char** outData, size_t* outDataLen)
    {
        // don't need to convert
        if (format == originFormat || format == PixelFormat::AUTO)
        {
            *outData = (unsigned char*)data;
            *outDataLen = dataLen;
            return originFormat;
        }
        
        switch (originFormat)
        {
            case PixelFormat::I8:
                return convertI8ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::AI88:
                return convertAI88ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::RGB888:
                return convertRGB888ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::RGBA8888:
                return convertRGBA8888ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::RGB5A1:
                return convertRGB5A1ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::RGB565:
                return convertRGB565ToFormat(data, dataLen, format, outData, outDataLen);
#ifdef CC_USE_METAL
            case PixelFormat::RGBA4444:
                return convertRGBA4444ToFormat(data, dataLen, format, outData, outDataLen);
            case PixelFormat::A8:
                return convertA8ToFormat(data, dataLen, format, outData, outDataLen);
                
#endif
            case PixelFormat::BGRA8888:
                return convertBGRA8888ToFormat(data, dataLen, format, outData, outDataLen);
            default:
                CCLOG("unsupported conversion from format %d to format %d", static_cast<int>(originFormat), static_cast<int>(format));
                *outData = (unsigned char*)data;
                *outDataLen = dataLen;
                return originFormat;
        }
    }
}
}

NS_CC_END