1 /*M///////////////////////////////////////////////////////////////////////////////////////
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11 // For Open Source Computer Vision Library
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47 /* converting image from depths 8, 24, 32 to 8, 16, 24, 32 */
49 void icvvConvert( int w, int h, int src_s, int src_d, char* src,
50 int dst_s, int dst_d, char* dst )
62 Assert( src_s >= w * src_d / 8 );
63 Assert( dst_s >= w * dst_d / 8 );
73 for( y = 0; y < h; y++, src += src_s, dst+= dst_s )
74 memcpy( dst, src, w );
77 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
78 for( x = 0; x < w; x++ )
80 val = (unsigned char)src[x];
81 *(unsigned short*)(dst + x * 2) = ((val & ~3) << 3) +
87 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
88 for( x = 0, x3 = 0; x < w; x++, x3 += 3 )
89 dst[x3] = dst[x3 + 1] = dst[x3 + 2] = src[x];
92 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
93 for( x = 0; x < w; x++ )
95 dst[x * 4] = dst[x * 4 + 1] = dst[x * 4 + 2] = src[x];
106 for( y = 0; y < h; y++, src += src_s, dst+= dst_s )
107 for( x = 0, x3 = 0; x < w; x++, x3 += 3 )
108 dst[x] = (src[x3] + src[x3 + 1] + src[x3 + 2]) / 3;
111 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
112 for( x = 0, x3 = 0; x < w; x++, x3 += 3 )
114 v1 = (unsigned char)src[x3];
115 v2 = (unsigned char)src[x3 + 1];
116 v3 = (unsigned char)src[x3 + 2];
117 ((unsigned short*)(dst))[x] = (v1 >> 3) +
123 for( y = 0; y < h; y++, src += src_s, dst+= dst_s )
124 memcpy( dst, src, w * 3 );
127 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
128 for( x = 0, x3 = 0; x < w; x++, x3 += 3 )
130 dst[x * 4] = src[x3];
131 dst[x * 4 + 1] = src[x3 + 1];
132 dst[x * 4 + 2] = src[x3 + 2];
143 for( y = 0; y < h; y++, src += src_s, dst+= dst_s )
144 for( x = 0; x < w; x++ )
145 dst[x] = (src[x * 4] + src[x * 4 + 1] + src[x * 4 + 2]) / 3;
148 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
149 for( x = 0; x < w; x++ )
151 v1 = (unsigned char)src[x * 4];
152 v2 = (unsigned char)src[x * 4 + 1];
153 v3 = (unsigned char)src[x * 4 + 2];
154 ((unsigned short*)(dst))[x] = (v1 >> 3) + ((v2 & ~3) << 3) + ((v3 & ~7) << 8);
158 for( y = 0; y < h; y++, src += src_s, dst += dst_s )
159 for( x = 0, x3 = 0; x < w; x++, x3 += 3 )
161 dst[x3] = src[x * 4];
162 dst[x3 + 1] = src[x * 4 + 1];
163 dst[x3 + 2] = src[x * 4 + 2];
167 for( y = 0; y < h; y++, src += src_s, dst+= dst_s )
168 memcpy( dst, src, w * 4 );