void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags) { int i, shift, sp1, sp2, sp3, sp4; const int32_t *src; int32_t *dst; int tmp[64]; int t0, t1, t2, t3, t4, t5, t6, t7, t8; /* apply the InvHaar8 to all columns */ #define COMPENSATE(x) (x) src = in; dst = tmp; for (i = 0; i < 8; i++) { if (flags[i]) { /* pre-scaling */ shift = !(i & 4); sp1 = src[ 0] << shift; sp2 = src[ 8] << shift; sp3 = src[16] << shift; sp4 = src[24] << shift; INV_HAAR8( sp1, sp2, sp3, sp4, src[32], src[40], src[48], src[56], dst[ 0], dst[ 8], dst[16], dst[24], dst[32], dst[40], dst[48], dst[56], t0, t1, t2, t3, t4, t5, t6, t7, t8); } else dst[ 0] = dst[ 8] = dst[16] = dst[24] = dst[32] = dst[40] = dst[48] = dst[56] = 0; src++; dst++; } #undef COMPENSATE /* apply the InvHaar8 to all rows */ #define COMPENSATE(x) (x) src = tmp; for (i = 0; i < 8; i++) { if ( !src[0] && !src[1] && !src[2] && !src[3] && !src[4] && !src[5] && !src[6] && !src[7]) { memset(out, 0, 8 * sizeof(out[0])); } else { INV_HAAR8(src[0], src[1], src[2], src[3], src[4], src[5], src[6], src[7], out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7], t0, t1, t2, t3, t4, t5, t6, t7, t8); } src += 8; out += pitch; } #undef COMPENSATE }