}
#endif
+#define TEST_INT_16x16_IDCT 1
+#if !TEST_INT_16x16_IDCT
static const double C1 = 0.995184726672197;
static const double C2 = 0.98078528040323;
static const double C3 = 0.956940335732209;
}
vp9_clear_system_state(); // Make it simd safe : __asm emms;
}
+
+#else
+static const int16_t C1 = 16305;
+static const int16_t C2 = 16069;
+static const int16_t C3 = 15679;
+static const int16_t C4 = 15137;
+static const int16_t C5 = 14449;
+static const int16_t C6 = 13623;
+static const int16_t C7 = 12665;
+static const int16_t C8 = 11585;
+static const int16_t C9 = 10394;
+static const int16_t C10 = 9102;
+static const int16_t C11 = 7723;
+static const int16_t C12 = 6270;
+static const int16_t C13 = 4756;
+static const int16_t C14 = 3196;
+static const int16_t C15 = 1606;
+
+#define INITIAL_SHIFT 2
+#define INITIAL_ROUNDING (1 << (INITIAL_SHIFT - 1))
+#define RIGHT_SHIFT 14
+#define RIGHT_ROUNDING (1 << (RIGHT_SHIFT - 1))
+
+static void butterfly_16x16_idct_1d(int16_t input[16], int16_t output[16],
+ int last_shift_bits) {
+ int16_t step[16];
+ int intermediate[16];
+ int temp1, temp2;
+
+ int step1_shift = RIGHT_SHIFT + INITIAL_SHIFT;
+ int step1_rounding = 1 << (step1_shift - 1);
+ int last_rounding = 0;
+
+ if (last_shift_bits > 0)
+ last_rounding = 1 << (last_shift_bits - 1);
+
+ // step 1 and 2
+ step[ 0] = (input[0] + input[8] + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+ step[ 1] = (input[0] - input[8] + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+
+ temp1 = input[4] * C12;
+ temp2 = input[12] * C4;
+ temp1 = (temp1 - temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp1 *= C8;
+ step[ 2] = (2 * (temp1) + step1_rounding) >> step1_shift;
+
+ temp1 = input[4] * C4;
+ temp2 = input[12] * C12;
+ temp1 = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp1 *= C8;
+ step[ 3] = (2 * (temp1) + step1_rounding) >> step1_shift;
+
+ temp1 = input[2] * C8;
+ temp1 = (2 * (temp1) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp2 = input[6] + input[10];
+ step[ 4] = (temp1 + temp2 + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+ step[ 5] = (temp1 - temp2 + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+
+ temp1 = input[14] * C8;
+ temp1 = (2 * (temp1) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp2 = input[6] - input[10];
+ step[ 6] = (temp2 - temp1 + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+ step[ 7] = (temp2 + temp1 + INITIAL_ROUNDING) >> INITIAL_SHIFT;
+
+ // for odd input
+ temp1 = input[3] * C12;
+ temp2 = input[13] * C4;
+ temp1 = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp1 *= C8;
+ intermediate[ 8] = (2 * (temp1) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = input[3] * C4;
+ temp2 = input[13] * C12;
+ temp2 = (temp2 - temp1 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp2 *= C8;
+ intermediate[ 9] = (2 * (temp2) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ intermediate[10] = (2 * (input[9] * C8) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ intermediate[11] = input[15] - input[1];
+ intermediate[12] = input[15] + input[1];
+ intermediate[13] = (2 * (input[7] * C8) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = input[11] * C12;
+ temp2 = input[5] * C4;
+ temp2 = (temp2 - temp1 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp2 *= C8;
+ intermediate[14] = (2 * (temp2) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = input[11] * C4;
+ temp2 = input[5] * C12;
+ temp1 = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+ temp1 *= C8;
+ intermediate[15] = (2 * (temp1) + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ step[ 8] = (intermediate[ 8] + intermediate[14] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[ 9] = (intermediate[ 9] + intermediate[15] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[10] = (intermediate[10] + intermediate[11] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[11] = (intermediate[10] - intermediate[11] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[12] = (intermediate[12] + intermediate[13] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[13] = (intermediate[12] - intermediate[13] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[14] = (intermediate[ 8] - intermediate[14] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+ step[15] = (intermediate[ 9] - intermediate[15] + INITIAL_ROUNDING)
+ >> INITIAL_SHIFT;
+
+ // step 3
+ output[0] = step[ 0] + step[ 3];
+ output[1] = step[ 1] + step[ 2];
+ output[2] = step[ 1] - step[ 2];
+ output[3] = step[ 0] - step[ 3];
+
+ temp1 = step[ 4] * C14;
+ temp2 = step[ 7] * C2;
+ output[4] = (temp1 - temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 4] * C2;
+ temp2 = step[ 7] * C14;
+ output[7] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 5] * C10;
+ temp2 = step[ 6] * C6;
+ output[5] = (temp1 - temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 5] * C6;
+ temp2 = step[ 6] * C10;
+ output[6] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ output[8] = step[ 8] + step[11];
+ output[9] = step[ 9] + step[10];
+ output[10] = step[ 9] - step[10];
+ output[11] = step[ 8] - step[11];
+ output[12] = step[12] + step[15];
+ output[13] = step[13] + step[14];
+ output[14] = step[13] - step[14];
+ output[15] = step[12] - step[15];
+
+ // output 4
+ step[ 0] = output[0] + output[7];
+ step[ 1] = output[1] + output[6];
+ step[ 2] = output[2] + output[5];
+ step[ 3] = output[3] + output[4];
+ step[ 4] = output[3] - output[4];
+ step[ 5] = output[2] - output[5];
+ step[ 6] = output[1] - output[6];
+ step[ 7] = output[0] - output[7];
+
+ temp1 = output[8] * C7;
+ temp2 = output[15] * C9;
+ step[ 8] = (temp1 - temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[9] * C11;
+ temp2 = output[14] * C5;
+ step[ 9] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[10] * C3;
+ temp2 = output[13] * C13;
+ step[10] = (temp1 - temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[11] * C15;
+ temp2 = output[12] * C1;
+ step[11] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[11] * C1;
+ temp2 = output[12] * C15;
+ step[12] = (temp2 - temp1 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[10] * C13;
+ temp2 = output[13] * C3;
+ step[13] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[9] * C5;
+ temp2 = output[14] * C11;
+ step[14] = (temp2 - temp1 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[8] * C9;
+ temp2 = output[15] * C7;
+ step[15] = (temp1 + temp2 + RIGHT_ROUNDING) >> RIGHT_SHIFT;
+
+ // step 5
+ output[0] = (step[0] + step[15] + last_rounding) >> last_shift_bits;
+ output[1] = (step[1] + step[14] + last_rounding) >> last_shift_bits;
+ output[2] = (step[2] + step[13] + last_rounding) >> last_shift_bits;
+ output[3] = (step[3] + step[12] + last_rounding) >> last_shift_bits;
+ output[4] = (step[4] + step[11] + last_rounding) >> last_shift_bits;
+ output[5] = (step[5] + step[10] + last_rounding) >> last_shift_bits;
+ output[6] = (step[6] + step[ 9] + last_rounding) >> last_shift_bits;
+ output[7] = (step[7] + step[ 8] + last_rounding) >> last_shift_bits;
+
+ output[15] = (step[0] - step[15] + last_rounding) >> last_shift_bits;
+ output[14] = (step[1] - step[14] + last_rounding) >> last_shift_bits;
+ output[13] = (step[2] - step[13] + last_rounding) >> last_shift_bits;
+ output[12] = (step[3] - step[12] + last_rounding) >> last_shift_bits;
+ output[11] = (step[4] - step[11] + last_rounding) >> last_shift_bits;
+ output[10] = (step[5] - step[10] + last_rounding) >> last_shift_bits;
+ output[9] = (step[6] - step[ 9] + last_rounding) >> last_shift_bits;
+ output[8] = (step[7] - step[ 8] + last_rounding) >> last_shift_bits;
+}
+
+void vp9_short_idct16x16_c(int16_t *input, int16_t *output, int pitch) {
+ int16_t out[16 * 16];
+ int16_t *outptr = &out[0];
+ const int short_pitch = pitch >> 1;
+ int i, j;
+ int16_t temp_in[16], temp_out[16];
+
+ // First transform rows
+ for (i = 0; i < 16; ++i) {
+ butterfly_16x16_idct_1d(input, outptr, 0);
+ input += short_pitch;
+ outptr += 16;
+ }
+
+ // Then transform columns
+ for (i = 0; i < 16; ++i) {
+ for (j = 0; j < 16; ++j)
+ temp_in[j] = out[j * 16 + i];
+ butterfly_16x16_idct_1d(temp_in, temp_out, 3);
+ for (j = 0; j < 16; ++j)
+ output[j * 16 + i] = temp_out[j];
+ }
+}
+#undef INITIAL_SHIFT
+#undef INITIAL_ROUNDING
+#undef RIGHT_SHIFT
+#undef RIGHT_ROUNDING
+#endif
}
#endif
+#define TEST_INT_16x16_DCT 1
+#if !TEST_INT_16x16_DCT
static const double C1 = 0.995184726672197;
static const double C2 = 0.98078528040323;
static const double C3 = 0.956940335732209;
}
vp9_clear_system_state(); // Make it simd safe : __asm emms;
}
+
+#else
+static const int16_t C1 = 16305;
+static const int16_t C2 = 16069;
+static const int16_t C3 = 15679;
+static const int16_t C4 = 15137;
+static const int16_t C5 = 14449;
+static const int16_t C6 = 13623;
+static const int16_t C7 = 12665;
+static const int16_t C8 = 11585;
+static const int16_t C9 = 10394;
+static const int16_t C10 = 9102;
+static const int16_t C11 = 7723;
+static const int16_t C12 = 6270;
+static const int16_t C13 = 4756;
+static const int16_t C14 = 3196;
+static const int16_t C15 = 1606;
+
+#define RIGHT_SHIFT 14
+#define ROUNDING (1 << (RIGHT_SHIFT - 1))
+
+static void dct16x16_1d(int16_t input[16], int16_t output[16],
+ int last_shift_bits) {
+ int16_t step[16];
+ int intermediate[16];
+ int temp1, temp2;
+ int final_shift = RIGHT_SHIFT;
+ int final_rounding = ROUNDING;
+ int output_shift = 0;
+ int output_rounding = 0;
+
+ final_shift += last_shift_bits;
+ if (final_shift > 0)
+ final_rounding = 1 << (final_shift - 1);
+
+ output_shift += last_shift_bits;
+ if (output_shift > 0)
+ output_rounding = 1 << (output_shift - 1);
+
+ // step 1
+ step[ 0] = input[0] + input[15];
+ step[ 1] = input[1] + input[14];
+ step[ 2] = input[2] + input[13];
+ step[ 3] = input[3] + input[12];
+ step[ 4] = input[4] + input[11];
+ step[ 5] = input[5] + input[10];
+ step[ 6] = input[6] + input[ 9];
+ step[ 7] = input[7] + input[ 8];
+ step[ 8] = input[7] - input[ 8];
+ step[ 9] = input[6] - input[ 9];
+ step[10] = input[5] - input[10];
+ step[11] = input[4] - input[11];
+ step[12] = input[3] - input[12];
+ step[13] = input[2] - input[13];
+ step[14] = input[1] - input[14];
+ step[15] = input[0] - input[15];
+
+ // step 2
+ output[0] = step[0] + step[7];
+ output[1] = step[1] + step[6];
+ output[2] = step[2] + step[5];
+ output[3] = step[3] + step[4];
+ output[4] = step[3] - step[4];
+ output[5] = step[2] - step[5];
+ output[6] = step[1] - step[6];
+ output[7] = step[0] - step[7];
+
+ temp1 = step[ 8] * C7;
+ temp2 = step[15] * C9;
+ output[ 8] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 9] * C11;
+ temp2 = step[14] * C5;
+ output[ 9] = (temp1 - temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[10] * C3;
+ temp2 = step[13] * C13;
+ output[10] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[11] * C15;
+ temp2 = step[12] * C1;
+ output[11] = (temp1 - temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[11] * C1;
+ temp2 = step[12] * C15;
+ output[12] = (temp2 + temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[10] * C13;
+ temp2 = step[13] * C3;
+ output[13] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 9] * C5;
+ temp2 = step[14] * C11;
+ output[14] = (temp2 + temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[ 8] * C9;
+ temp2 = step[15] * C7;
+ output[15] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ // step 3
+ step[ 0] = output[0] + output[3];
+ step[ 1] = output[1] + output[2];
+ step[ 2] = output[1] - output[2];
+ step[ 3] = output[0] - output[3];
+
+ temp1 = output[4] * C14;
+ temp2 = output[7] * C2;
+ step[ 4] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[5] * C10;
+ temp2 = output[6] * C6;
+ step[ 5] = (temp1 + temp2 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[5] * C6;
+ temp2 = output[6] * C10;
+ step[ 6] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = output[4] * C2;
+ temp2 = output[7] * C14;
+ step[ 7] = (temp2 - temp1 + ROUNDING) >> RIGHT_SHIFT;
+
+ step[ 8] = output[ 8] + output[11];
+ step[ 9] = output[ 9] + output[10];
+ step[10] = output[ 9] - output[10];
+ step[11] = output[ 8] - output[11];
+
+ step[12] = output[12] + output[15];
+ step[13] = output[13] + output[14];
+ step[14] = output[13] - output[14];
+ step[15] = output[12] - output[15];
+
+ // step 4
+ output[ 0] = (step[ 0] + step[ 1] + output_rounding) >> output_shift;
+ output[ 8] = (step[ 0] - step[ 1] + output_rounding) >> output_shift;
+
+ temp1 = step[2] * C12;
+ temp2 = step[3] * C4;
+ temp1 = (temp1 + temp2 + final_rounding) >> final_shift;
+ output[ 4] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = step[2] * C4;
+ temp2 = step[3] * C12;
+ temp1 = (temp2 - temp1 + final_rounding) >> final_shift;
+ output[12] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+
+ output[ 2] = (2 * ((step[4] + step[ 5]) * C8) + final_rounding)
+ >> final_shift;
+ output[14] = (2 * ((step[7] - step[ 6]) * C8) + final_rounding)
+ >> final_shift;
+
+ temp1 = step[4] - step[5];
+ temp2 = step[6] + step[7];
+ output[ 6] = (temp1 + temp2 + output_rounding) >> output_shift;
+ output[10] = (temp1 - temp2 + output_rounding) >> output_shift;
+
+ intermediate[8] = step[8] + step[14];
+ intermediate[9] = step[9] + step[15];
+
+ temp1 = intermediate[8] * C12;
+ temp2 = intermediate[9] * C4;
+ temp1 = (temp1 - temp2 + final_rounding) >> final_shift;
+ output[3] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = intermediate[8] * C4;
+ temp2 = intermediate[9] * C12;
+ temp1 = (temp2 + temp1 + final_rounding) >> final_shift;
+ output[13] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+
+ output[ 9] = (2 * ((step[10] + step[11]) * C8) + final_rounding)
+ >> final_shift;
+
+ intermediate[11] = step[10] - step[11];
+ intermediate[12] = step[12] + step[13];
+ intermediate[13] = step[12] - step[13];
+ intermediate[14] = step[ 8] - step[14];
+ intermediate[15] = step[ 9] - step[15];
+
+ output[15] = (intermediate[11] + intermediate[12] + output_rounding)
+ >> output_shift;
+ output[ 1] = -(intermediate[11] - intermediate[12] + output_rounding)
+ >> output_shift;
+
+ output[ 7] = (2 * (intermediate[13] * C8) + final_rounding) >> final_shift;
+
+ temp1 = intermediate[14] * C12;
+ temp2 = intermediate[15] * C4;
+ temp1 = (temp1 - temp2 + final_rounding) >> final_shift;
+ output[11] = (-2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+
+ temp1 = intermediate[14] * C4;
+ temp2 = intermediate[15] * C12;
+ temp1 = (temp2 + temp1 + final_rounding) >> final_shift;
+ output[ 5] = (2 * (temp1 * C8) + ROUNDING) >> RIGHT_SHIFT;
+}
+
+void vp9_short_fdct16x16_c(int16_t *input, int16_t *out, int pitch) {
+ int shortpitch = pitch >> 1;
+ int i, j;
+ int16_t output[256];
+ int16_t *outptr = &output[0];
+
+ // First transform columns
+ for (i = 0; i < 16; i++) {
+ int16_t temp_in[16];
+ int16_t temp_out[16];
+ for (j = 0; j < 16; j++)
+ temp_in[j] = input[j * shortpitch + i];
+ dct16x16_1d(temp_in, temp_out, 0);
+ for (j = 0; j < 16; j++)
+ output[j * 16 + i] = temp_out[j];
+ }
+
+ // Then transform rows
+ for (i = 0; i < 16; ++i) {
+ dct16x16_1d(outptr, out, 1);
+ outptr += 16;
+ out += 16;
+ }
+}
+#undef RIGHT_SHIFT
+#undef ROUNDING
+#endif
projects / platform / upstream / libvpx.git / commitdiff