rgb32torgb444.c

linux下的一款播放器

            {
                d1 += 2;
                *(unsigned short *) (d2) = da_rgb;
                d2 += 2;
                *(unsigned short *) (d12) = dc_rgb;
                d12 += 2;
                if (!(--count))
                    goto end_of_row;

            }
            while ((limit -= step) >= 0);
            limit += dest_dx;
            register unsigned int sa_rgb;
            sa_rgb = *(unsigned int *) (s);
            db_rgb =((8 + 4 <8)? (((((16 + 8 <8) ? ((sa_rgb << ((8 - (16 + 8)) & 0x1F)) & (0x100 -(1U <<(8 -8)))): ((sa_rgb >> (((16 + 8) - 8) & 0x1F)) &(0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 -4)))) >>((8 -(8 +4)) & 0x1F)) : (((((16 + 8 <8) ? ((sa_rgb <<((8 -(16 + 8)) & 0x1F)) & (0x100 -(1U <<(8 -8)))): ((sa_rgb >> (((16 + 8) - 8) & 0x1F)) &(0x100 -(1U << (8 - 8)))))) & (0x100 -(1U <<(8 -4)))) <<(((8 + 4) - 8) & 0x1F))) | ((4 + 4 <8)? (((((8 + 8 <8)? ((sa_rgb << ((8 - (8 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((8 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) >> ((8 - (4 + 4)) & 0x1F)) : (((((8 + 8 < 8) ? ((sa_rgb << ((8 - (8 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((8 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) << (((4 + 4) - 8) & 0x1F))) | ((0 + 4 < 8) ? (((((0 + 8 < 8) ? ((sa_rgb << ((8 - (0 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((0 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) >> ((8 - (0 + 4)) & 0x1F)) : (((((0 + 8 < 8) ? ((sa_rgb << ((8 - (0 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((0 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) << (((0 + 4) - 8) & 0x1F)));
            da_rgb =(((da_rgb ^ db_rgb) >> 1) &(((1U << (8 + 4 - 1)) - (1U << 8)) | ((1U << (4 + 4 - 1)) -(1U << 4)) | ((1U <<(0 + 4 -1)) -(1U << 0))))+ (da_rgb & db_rgb);
            sb_rgb = *(unsigned short *) (d1);
            dc_rgb =(((da_rgb ^ sb_rgb) >> 1) &(((1U << (8 + 4 - 1)) - (1U << 8)) | ((1U << (4 + 4 - 1)) -(1U << 4)) | ((1U <<(0 + 4 -1)) -(1U << 0))))+ (da_rgb & sb_rgb);
            do
            {
                d1 += 2;
                *(unsigned short *) (d2) = da_rgb;
                d2 += 2;
                *(unsigned short *) (d12) = dc_rgb;
                d12 += 2;
                if (!(--count))
                    goto end_of_row;
            }
            while ((limit -= step) >= 0);
            limit += dest_dx;
            sb_rgb = *(unsigned short *) (d1);
            dd_rgb =(((db_rgb ^ sb_rgb) >> 1) &(((1U << (8 + 4 - 1)) - (1U << 8)) | ((1U << (4 + 4 - 1)) -(1U << 4)) | ((1U <<(0 + 4 -1)) -(1U << 0))))+ (db_rgb & sb_rgb);
            do
            {
                d1 += 2;
                *(unsigned short *) (d2) = db_rgb;
                d2 += 2;
                *(unsigned short *) (d12) = dd_rgb;
                d12 += 2;
                if (!(--count))
                    goto end_of_row_2;
            }
            while ((limit -= step) >= 0);
            limit += dest_dx;
            sa_rgb = *(unsigned int *) (s + 4);
            da_rgb =((8 + 4 <8)? (((((16 + 8 <8) ? ((sa_rgb << ((8 - (16 + 8)) & 0x1F)) & (0x100 -(1U <<(8 -8)))): ((sa_rgb >> (((16 + 8) - 8) & 0x1F)) &(0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 -4)))) >>((8 -(8 +4)) & 0x1F)) : (((((16 + 8 <8) ? ((sa_rgb <<((8 -(16 + 8)) & 0x1F)) & (0x100 -(1U <<(8 -8)))): ((sa_rgb >> (((16 + 8) - 8) & 0x1F)) &(0x100 -(1U << (8 - 8)))))) & (0x100 -(1U <<(8 -4)))) <<(((8 + 4) - 8) & 0x1F))) | ((4 + 4 <8)? (((((8 + 8 <8)? ((sa_rgb << ((8 - (8 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((8 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) >> ((8 - (4 + 4)) & 0x1F)) : (((((8 + 8 < 8) ? ((sa_rgb << ((8 - (8 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((8 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) << (((4 + 4) - 8) & 0x1F))) | ((0 + 4 < 8) ? (((((0 + 8 < 8) ? ((sa_rgb << ((8 - (0 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((0 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) >> ((8 - (0 + 4)) & 0x1F)) : (((((0 + 8 < 8) ? ((sa_rgb << ((8 - (0 + 8)) & 0x1F)) & (0x100 - (1U << (8 - 8)))) : ((sa_rgb >> (((0 + 8) - 8) & 0x1F)) & (0x100 - (1U << (8 - 8)))))) & (0x100 - (1U << (8 - 4)))) << (((0 + 4) - 8) & 0x1F)));
            s += 2 * 4;
            db_rgb =(((db_rgb ^ da_rgb) >> 1) &(((1U << (8 + 4 - 1)) - (1U << 8)) | ((1U << (4 + 4 - 1)) -(1U << 4)) | ((1U <<(0 + 4 -1)) -(1U << 0))))+ (db_rgb & da_rgb);
            sb_rgb = *(unsigned short *) (d1);
            dd_rgb =(((db_rgb ^ sb_rgb) >> 1) &(((1U << (8 + 4 - 1)) - (1U << 8)) | ((1U << (4 + 4 - 1)) -(1U << 4)) | ((1U <<(0 + 4 -1)) -(1U << 0))))+ (db_rgb & sb_rgb);
            do
            {
                d1 += 2;
                *(unsigned short *) (d2) = db_rgb;
                d2 += 2;
                *(unsigned short *) (d12) = dd_rgb;
                d12 += 2;
                if (!(--count))
                    goto end_of_row_2;
            }
            while ((limit -= step) >= 0);
            limit += dest_dx;
        }
      end_of_row_2:
        da_rgb = db_rgb;
        dc_rgb = dd_rgb;
      end_of_row:
        while (remainder--)
        {
            *(unsigned short *) (d2) = da_rgb;
            d2 += 2;
            *(unsigned short *) (d12) = dc_rgb;
            d12 += 2;
        }
    }
}

int
RGBtoRGB (int dest_format, unsigned char *dest_ptr, int dest_width,
          int dest_height, int dest_pitch, int dest_x, int dest_y,
          int dest_dx, int dest_dy, int src_format, unsigned char *src_ptr,
          int src_width, int src_height, int src_pitch, int src_x, int src_y,
          int src_dx, int src_dy)
{
    
    void (*ImageFuncs[5]) (unsigned char *dest_ptr, int dest_dx, int dest_dy,
                           int dest_pitch, int dest_bpp, unsigned char *src_ptr,
                           int src_dx, int src_dy, int src_pitch, int src_bpp,
                           void (*row_func) (unsigned char *, int,
                                             unsigned char *, int),
                           void (*row2x_func) (unsigned char *, unsigned char *,
                                               unsigned char *, int,
                                               unsigned char *, int)) =
        {
            IMAGE_SHRINK,
            IMAGE_COPY,
            IMAGE_STRETCH,
            IMAGE_STRETCH2X,
            IMAGE_STRETCH2XPLUS
        };
    
    void (*RowFuncs[5]) (unsigned char *dest_ptr, int dest_dx,
                         unsigned char *src_ptr, int src_dx) =
        {
            RGB32toRGB444_ROW_SHRINK,
            RGB32toRGB444_ROW_COPY,
            RGB32toRGB444_ROW_STRETCH,
            RGB32toRGB444_ROW_STRETCH2X,
            RGB32toRGB444_ROW_STRETCH2XPLUS
        };


    void (*Row2xFuncs[5]) (unsigned char *dest_ptr_1, unsigned char *dest_ptr_12,
                           unsigned char *dest_ptr_2, int dest_dx,
                           unsigned char *src_ptr, int src_dx) =
        {
            RGB32toRGB444_ROW2X_SHRINK,
            RGB32toRGB444_ROW2X_COPY,
            RGB32toRGB444_ROW2X_STRETCH,
            RGB32toRGB444_ROW2X_STRETCH2X,
            RGB32toRGB444_ROW2X_STRETCH2XPLUS
        };


    void (*row_proc) (unsigned char *, int, unsigned char *, int);
    void (*row2x_proc) (unsigned char *, unsigned char *, unsigned char *, int,
                        unsigned char *, int);
    void (*image_proc) (unsigned char *, int, int, int, int,
                        unsigned char *, int, int, int, int,
                        void (*)(unsigned char *, int, unsigned char *, int),
                        void (*)(unsigned char *, unsigned char *,
                                 unsigned char *, int, unsigned char *, int));

    register int scale_x, scale_y;


    register int dest_bpp, src_bpp;
    register unsigned char *d, *s;


    if (((unsigned) dest_ptr & 3) || (dest_pitch & 1) ||
        ((unsigned) src_ptr & 3) || (src_pitch & 3) ||
        dest_width <= 0 || dest_height <= 0 ||
        src_width <= 0 || src_height <= 0 ||
        dest_x < 0 || dest_y < 0 || dest_dx <= 0 || dest_dy <= 0 ||
        src_x < 0 || src_y < 0 || src_dx <= 0 || src_dy <= 0 ||
        dest_width < dest_x + dest_dx || dest_height < dest