#pragma pack(pop)
+#pragma pack(push, 1)
+struct DDS_PIXELFORMAT
+{
+ uint32_t dwSize;
+ uint32_t dwFlags;
+ uint32_t dwFourCC;
+ uint32_t dwRGBBitCount;
+ uint32_t dwRBitMask;
+ uint32_t dwGBitMask;
+ uint32_t dwBBitMask;
+ uint32_t dwABitMask;
+};
+
+struct DDS_HEADER {
+ uint32_t dwSize;
+ uint32_t dwFlags;
+ uint32_t dwHeight;
+ uint32_t dwWidth;
+ uint32_t dwPitchOrLinearSize;
+ uint32_t dwDepth;
+ uint32_t dwMipMapCount;
+ uint32_t dwReserved1[11];
+ struct DDS_PIXELFORMAT ddspf;
+ uint32_t dwCaps;
+ uint32_t dwCaps2;
+ uint32_t dwCaps3;
+ uint32_t dwCaps4;
+ uint32_t dwReserved2;
+};
+
+#pragma pack(pop)
+
+uint32_t swap_endian(uint32_t val)
+{
+ return (val << 24) | ((val << 8) & 0x00ff0000) |
+ ((val >> 8) & 0x0000ff00) | (val >> 24);
+}
+
+#define DDSD_CAPS 0x1
+#define DDSD_HEIGHT 0x2
+#define DDSD_WIDTH 0x4
+#define DDSD_PITCH 0x8
+#define DDSD_PIXELFORMAT 0x1000
+#define DDSD_MIPMAPCOUNT 0x20000
+#define DDSD_LINEARSIZE 0x80000
+#define DDSD_DEPTH 0x800000
+
+#define DDPF_ALPHAPIXELS 0x1
+#define DDPF_ALPHA 0x2
+#define DDPF_FOURCC 0x4
+#define DDPF_RGB 0x40
+#define DDPF_YUV 0x200
+#define DDPF_LUMINANCE 0x20000
+
+#define DDSCAPS_COMPLEX 0x8
+#define DDSCAPS_MIPMAP 0x400000
+#define DDSCAPS_TEXTURE 0x1000
+
+#define BLOCK_SIZE_DXT1 8
+#define BLOCK_SIZE_DXT5 16
+
+#define BBP_RGB888 24
+#define BBP_RGBA8888 32
+
+#define DDS_HEADER_SIZE 124
+#define DDS_HEADER_PFSIZE 32
+#define DDS_MAGICNUM 0x20534444;
+
+#define DDS_FLIP_VERTICALLY_ON_WRITE
+
typedef struct mipimg
{
uint32_t w;
}
}
+
+
+#ifdef NBVTF_AS_SO
+__attribute__((visibility("default")))
+#endif
+int nbvtf_write_dds_dxt1( uint8_t *reference, int w, int h, int qual, const char *dest )
+{
+ if( !nbvtf_power2x(w,h) )
+ {
+ NBVTF_ERR( "nbvtf_write:err image dimentions were not power of two (%d %d)\n", w, h );
+ return 0;
+ }
+
+ struct DDS_HEADER header = {0};
+ header.dwSize = DDS_HEADER_SIZE;
+ header.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
+ header.dwHeight = h;
+ header.dwWidth = w;
+ header.dwPitchOrLinearSize = nbvtf__max(1, ((w + 3) / 4)) * BLOCK_SIZE_DXT1;
+ header.ddspf.dwSize = DDS_HEADER_PFSIZE;
+ header.ddspf.dwFlags |= DDPF_FOURCC;
+ header.ddspf.dwFourCC = ((uint32_t)'D'<<0) |
+ ((uint32_t)'X'<<8) |
+ ((uint32_t)'T'<<16) |
+ ((uint32_t)'1'<<24);
+
+ header.dwFlags |= DDSD_LINEARSIZE;
+ header.dwMipMapCount = 0;
+ header.dwCaps = DDSCAPS_TEXTURE;
+
+ // Magic number
+ uint32_t magic = DDS_MAGICNUM;
+
+ FILE *file = fopen( dest, "wb" );
+ fwrite( &magic, sizeof(uint32_t), 1, file );
+ fwrite( &header, DDS_HEADER_SIZE, 1, file );
+
+ uint32_t size_highres = nbvtf_sizeimg( w, h, k_EImageFormat_DXT1 );
+ uint8_t *working_buffer = malloc( size_highres );
+
+ nbvtf_compress_dxt( reference, w, h, 0, qual, working_buffer );
+ fwrite( working_buffer, size_highres, 1, file );
+
+ free( working_buffer );
+ fclose( file );
+ return 1;
+}
+
#ifdef NBVTF_AS_SO
__attribute__((visibility("default")))
#endif