static WEBP_INLINE void DoTransform(uint32_t bits, const int16_t* const src, uint8_t* const dst) { switch (bits >> 30) { case 3: VP8Transform(src, dst, 0); break; case 2: VP8TransformAC3(src, dst); break; case 1: VP8TransformDC(src, dst); break; default: break; } }
static void TransformDCUV(const int16_t* in, uint8_t* dst) { if (in[0 * 16]) VP8TransformDC(in + 0 * 16, dst); if (in[1 * 16]) VP8TransformDC(in + 1 * 16, dst + 4); if (in[2 * 16]) VP8TransformDC(in + 2 * 16, dst + 4 * BPS); if (in[3 * 16]) VP8TransformDC(in + 3 * 16, dst + 4 * BPS + 4); }