#if CONFIG_EXT_TX
void idst4_c(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ tran_low_t step[4];
+ tran_high_t temp1, temp2;
+ // stage 1
+ temp1 = (input[3] + input[1]) * cospi_16_64;
+ temp2 = (input[3] - input[1]) * cospi_16_64;
+ step[0] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step[1] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = input[2] * cospi_24_64 - input[0] * cospi_8_64;
+ temp2 = input[2] * cospi_8_64 + input[0] * cospi_24_64;
+ step[2] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step[3] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ // stage 2
+ output[0] = WRAPLOW(step[0] + step[3], 8);
+ output[1] = WRAPLOW(-step[1] - step[2], 8);
+ output[2] = WRAPLOW(step[1] - step[2], 8);
+ output[3] = WRAPLOW(step[3] - step[0], 8);
+#else
// {sin(pi/5), sin(pi*2/5)} * sqrt(2/5) * sqrt(2)
static const int32_t sinvalue_lookup[] = {
141124871, 228344838,
output[2] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), 8);
sum = d03 * sinvalue_lookup[0] - d12 * sinvalue_lookup[1];
output[3] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), 8);
+#endif // USE_DST2
}
void idst8_c(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ // vp9_igentx8(input, output, Tx8);
+ tran_low_t step1[8], step2[8];
+ tran_high_t temp1, temp2;
+ // stage 1
+ step1[0] = input[7];
+ step1[2] = input[3];
+ step1[1] = input[5];
+ step1[3] = input[1];
+ temp1 = input[6] * cospi_28_64 - input[0] * cospi_4_64;
+ temp2 = input[6] * cospi_4_64 + input[0] * cospi_28_64;
+ step1[4] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[7] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = input[2] * cospi_12_64 - input[4] * cospi_20_64;
+ temp2 = input[2] * cospi_20_64 + input[4] * cospi_12_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ // stage 2
+ temp1 = (step1[0] + step1[2]) * cospi_16_64;
+ temp2 = (step1[0] - step1[2]) * cospi_16_64;
+ step2[0] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[1] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = step1[1] * cospi_24_64 - step1[3] * cospi_8_64;
+ temp2 = step1[1] * cospi_8_64 + step1[3] * cospi_24_64;
+ step2[2] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[3] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step2[4] = WRAPLOW(step1[4] + step1[5], 8);
+ step2[5] = WRAPLOW(step1[4] - step1[5], 8);
+ step2[6] = WRAPLOW(-step1[6] + step1[7], 8);
+ step2[7] = WRAPLOW(step1[6] + step1[7], 8);
+
+ // stage 3
+ step1[0] = WRAPLOW(step2[0] + step2[3], 8);
+ step1[1] = WRAPLOW(step2[1] + step2[2], 8);
+ step1[2] = WRAPLOW(step2[1] - step2[2], 8);
+ step1[3] = WRAPLOW(step2[0] - step2[3], 8);
+ step1[4] = step2[4];
+ temp1 = (step2[6] - step2[5]) * cospi_16_64;
+ temp2 = (step2[5] + step2[6]) * cospi_16_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step1[7] = step2[7];
+
+ // stage 4
+ output[0] = WRAPLOW(step1[0] + step1[7], 8);
+ output[1] = WRAPLOW(-step1[1] - step1[6], 8);
+ output[2] = WRAPLOW(step1[2] + step1[5], 8);
+ output[3] = WRAPLOW(-step1[3] - step1[4], 8);
+ output[4] = WRAPLOW(step1[3] - step1[4], 8);
+ output[5] = WRAPLOW(-step1[2] + step1[5], 8);
+ output[6] = WRAPLOW(step1[1] - step1[6], 8);
+ output[7] = WRAPLOW(-step1[0] + step1[7], 8);
+#else
// {sin(pi/9), sin(pi*2/9), ..., sin(pi*4/9)} * sqrt(2/9) * 2
static const int32_t sinvalue_lookup[] = {
86559612, 162678858, 219176632, 249238470
sum = d07 * sinvalue_lookup[0] - d16 * sinvalue_lookup[1] +
d25 * sinvalue_lookup[2] - d34 * sinvalue_lookup[3];
output[7] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), 8);
+#endif // USE_DST2
}
void idst16_c(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ tran_low_t step1[16], step2[16];
+ tran_high_t temp1, temp2;
+
+ // stage 1
+ step1[0] = input[15];
+ step1[1] = input[7];
+ step1[2] = input[11];
+ step1[3] = input[3];
+ step1[4] = input[13];
+ step1[5] = input[5];
+ step1[6] = input[9];
+ step1[7] = input[1];
+ step1[8] = input[14];
+ step1[9] = input[6];
+ step1[10] = input[10];
+ step1[11] = input[2];
+ step1[12] = input[12];
+ step1[13] = input[4];
+ step1[14] = input[8];
+ step1[15] = input[0];
+
+ // stage 2
+ step2[0] = step1[0];
+ step2[1] = step1[1];
+ step2[2] = step1[2];
+ step2[3] = step1[3];
+ step2[4] = step1[4];
+ step2[5] = step1[5];
+ step2[6] = step1[6];
+ step2[7] = step1[7];
+
+ temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64;
+ temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64;
+ step2[8] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[15] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64;
+ temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64;
+ step2[9] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[14] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64;
+ temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64;
+ temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64;
+ step2[11] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[12] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ // stage 3
+ step1[0] = step2[0];
+ step1[1] = step2[1];
+ step1[2] = step2[2];
+ step1[3] = step2[3];
+
+ temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64;
+ temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64;
+ step1[4] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[7] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64;
+ temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), 8);
+
+ step1[8] = WRAPLOW(step2[8] + step2[9], 8);
+ step1[9] = WRAPLOW(step2[8] - step2[9], 8);
+ step1[10] = WRAPLOW(-step2[10] + step2[11], 8);
+ step1[11] = WRAPLOW(step2[10] + step2[11], 8);
+ step1[12] = WRAPLOW(step2[12] + step2[13], 8);
+ step1[13] = WRAPLOW(step2[12] - step2[13], 8);
+ step1[14] = WRAPLOW(-step2[14] + step2[15], 8);
+ step1[15] = WRAPLOW(step2[14] + step2[15], 8);
+
+ // stage 4
+ temp1 = (step1[0] + step1[1]) * cospi_16_64;
+ temp2 = (step1[0] - step1[1]) * cospi_16_64;
+ step2[0] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[1] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64;
+ temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64;
+ step2[2] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[3] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step2[4] = WRAPLOW(step1[4] + step1[5], 8);
+ step2[5] = WRAPLOW(step1[4] - step1[5], 8);
+ step2[6] = WRAPLOW(-step1[6] + step1[7], 8);
+ step2[7] = WRAPLOW(step1[6] + step1[7], 8);
+
+ step2[8] = step1[8];
+ step2[15] = step1[15];
+ temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64;
+ temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64;
+ step2[9] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[14] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64;
+ temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step2[11] = step1[11];
+ step2[12] = step1[12];
+
+ // stage 5
+ step1[0] = WRAPLOW(step2[0] + step2[3], 8);
+ step1[1] = WRAPLOW(step2[1] + step2[2], 8);
+ step1[2] = WRAPLOW(step2[1] - step2[2], 8);
+ step1[3] = WRAPLOW(step2[0] - step2[3], 8);
+ step1[4] = step2[4];
+ temp1 = (step2[6] - step2[5]) * cospi_16_64;
+ temp2 = (step2[5] + step2[6]) * cospi_16_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step1[7] = step2[7];
+
+ step1[8] = WRAPLOW(step2[8] + step2[11], 8);
+ step1[9] = WRAPLOW(step2[9] + step2[10], 8);
+ step1[10] = WRAPLOW(step2[9] - step2[10], 8);
+ step1[11] = WRAPLOW(step2[8] - step2[11], 8);
+ step1[12] = WRAPLOW(-step2[12] + step2[15], 8);
+ step1[13] = WRAPLOW(-step2[13] + step2[14], 8);
+ step1[14] = WRAPLOW(step2[13] + step2[14], 8);
+ step1[15] = WRAPLOW(step2[12] + step2[15], 8);
+
+ // stage 6
+ step2[0] = WRAPLOW(step1[0] + step1[7], 8);
+ step2[1] = WRAPLOW(step1[1] + step1[6], 8);
+ step2[2] = WRAPLOW(step1[2] + step1[5], 8);
+ step2[3] = WRAPLOW(step1[3] + step1[4], 8);
+ step2[4] = WRAPLOW(step1[3] - step1[4], 8);
+ step2[5] = WRAPLOW(step1[2] - step1[5], 8);
+ step2[6] = WRAPLOW(step1[1] - step1[6], 8);
+ step2[7] = WRAPLOW(step1[0] - step1[7], 8);
+ step2[8] = step1[8];
+ step2[9] = step1[9];
+ temp1 = (-step1[10] + step1[13]) * cospi_16_64;
+ temp2 = (step1[10] + step1[13]) * cospi_16_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ temp1 = (-step1[11] + step1[12]) * cospi_16_64;
+ temp2 = (step1[11] + step1[12]) * cospi_16_64;
+ step2[11] = WRAPLOW(dct_const_round_shift(temp1), 8);
+ step2[12] = WRAPLOW(dct_const_round_shift(temp2), 8);
+ step2[14] = step1[14];
+ step2[15] = step1[15];
+
+ // stage 7
+ output[0] = WRAPLOW(step2[0] + step2[15], 8);
+ output[1] = WRAPLOW(-step2[1] - step2[14], 8);
+ output[2] = WRAPLOW(step2[2] + step2[13], 8);
+ output[3] = WRAPLOW(-step2[3] - step2[12], 8);
+ output[4] = WRAPLOW(step2[4] + step2[11], 8);
+ output[5] = WRAPLOW(-step2[5] - step2[10], 8);
+ output[6] = WRAPLOW(step2[6] + step2[9], 8);
+ output[7] = WRAPLOW(-step2[7] - step2[8], 8);
+ output[8] = WRAPLOW(step2[7] - step2[8], 8);
+ output[9] = WRAPLOW(-step2[6] + step2[9], 8);
+ output[10] = WRAPLOW(step2[5] - step2[10], 8);
+ output[11] = WRAPLOW(-step2[4] + step2[11], 8);
+ output[12] = WRAPLOW(step2[3] - step2[12], 8);
+ output[13] = WRAPLOW(-step2[2] + step2[13], 8);
+ output[14] = WRAPLOW(step2[1] - step2[14], 8);
+ output[15] = WRAPLOW(-step2[0] + step2[15], 8);
+#else
// {sin(pi/17), sin(pi*2/17, ..., sin(pi*8/17)} * sqrt(2/17) * 2 * sqrt(2)
static const int32_t sinvalue_lookup[] = {
47852167, 94074787, 137093803, 175444254,
d411 * sinvalue_lookup[4] - d510 * sinvalue_lookup[5] +
d69 * sinvalue_lookup[6] - d78 * sinvalue_lookup[7];
output[15] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), 8);
+#endif // USE_DST2
}
// Inverse identiy transform and add.
#if CONFIG_VP9_HIGHBITDEPTH
void highbd_idst4_c(const tran_low_t *input, tran_low_t *output, int bd) {
+#if USE_DST2
+ tran_low_t step[4];
+ tran_high_t temp1, temp2;
+ (void) bd;
+ // stage 1
+ temp1 = (input[3] + input[1]) * cospi_16_64;
+ temp2 = (input[3] - input[1]) * cospi_16_64;
+ step[0] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step[1] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = input[2] * cospi_24_64 - input[0] * cospi_8_64;
+ temp2 = input[2] * cospi_8_64 + input[0] * cospi_24_64;
+ step[2] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step[3] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ // stage 2
+ output[0] = WRAPLOW(step[0] + step[3], bd);
+ output[1] = WRAPLOW(-step[1] - step[2], bd);
+ output[2] = WRAPLOW(step[1] - step[2], bd);
+ output[3] = WRAPLOW(step[3] - step[0], bd);
+#else
// {sin(pi/5), sin(pi*2/5)} * sqrt(2/5) * sqrt(2)
static const int32_t sinvalue_lookup[] = {
141124871, 228344838,
output[2] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), bd);
sum = d03 * sinvalue_lookup[0] - d12 * sinvalue_lookup[1];
output[3] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), bd);
+#endif // USE_DST2
}
void highbd_idst8_c(const tran_low_t *input, tran_low_t *output, int bd) {
+#if USE_DST2
+ tran_low_t step1[8], step2[8];
+ tran_high_t temp1, temp2;
+ (void) bd;
+ // stage 1
+ step1[0] = input[7];
+ step1[2] = input[3];
+ step1[1] = input[5];
+ step1[3] = input[1];
+ temp1 = input[6] * cospi_28_64 - input[0] * cospi_4_64;
+ temp2 = input[6] * cospi_4_64 + input[0] * cospi_28_64;
+ step1[4] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[7] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = input[2] * cospi_12_64 - input[4] * cospi_20_64;
+ temp2 = input[2] * cospi_20_64 + input[4] * cospi_12_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ // stage 2
+ temp1 = (step1[0] + step1[2]) * cospi_16_64;
+ temp2 = (step1[0] - step1[2]) * cospi_16_64;
+ step2[0] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[1] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = step1[1] * cospi_24_64 - step1[3] * cospi_8_64;
+ temp2 = step1[1] * cospi_8_64 + step1[3] * cospi_24_64;
+ step2[2] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[3] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step2[4] = WRAPLOW(step1[4] + step1[5], bd);
+ step2[5] = WRAPLOW(step1[4] - step1[5], bd);
+ step2[6] = WRAPLOW(-step1[6] + step1[7], bd);
+ step2[7] = WRAPLOW(step1[6] + step1[7], bd);
+
+ // stage 3
+ step1[0] = WRAPLOW(step2[0] + step2[3], bd);
+ step1[1] = WRAPLOW(step2[1] + step2[2], bd);
+ step1[2] = WRAPLOW(step2[1] - step2[2], bd);
+ step1[3] = WRAPLOW(step2[0] - step2[3], bd);
+ step1[4] = step2[4];
+ temp1 = (step2[6] - step2[5]) * cospi_16_64;
+ temp2 = (step2[5] + step2[6]) * cospi_16_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step1[7] = step2[7];
+
+ // stage 4
+ output[0] = WRAPLOW(step1[0] + step1[7], bd);
+ output[1] = WRAPLOW(-step1[1] - step1[6], bd);
+ output[2] = WRAPLOW(step1[2] + step1[5], bd);
+ output[3] = WRAPLOW(-step1[3] - step1[4], bd);
+ output[4] = WRAPLOW(step1[3] - step1[4], bd);
+ output[5] = WRAPLOW(-step1[2] + step1[5], bd);
+ output[6] = WRAPLOW(step1[1] - step1[6], bd);
+ output[7] = WRAPLOW(-step1[0] + step1[7], bd);
+#else
// {sin(pi/9), sin(pi*2/9), ..., sin(pi*4/9)} * sqrt(2/9) * 2
static const int32_t sinvalue_lookup[] = {
86559612, 162678858, 219176632, 249238470
sum = d07 * sinvalue_lookup[0] - d16 * sinvalue_lookup[1] +
d25 * sinvalue_lookup[2] - d34 * sinvalue_lookup[3];
output[7] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), bd);
+#endif // USE_DST2
}
void highbd_idst16_c(const tran_low_t *input, tran_low_t *output, int bd) {
+#if USE_DST2
+ // vp9_highbd_igentx16(input, output, bd, Tx16);
+ tran_low_t step1[16], step2[16];
+ tran_high_t temp1, temp2;
+ (void) bd;
+
+ // stage 1
+ step1[0] = input[15];
+ step1[1] = input[7];
+ step1[2] = input[11];
+ step1[3] = input[3];
+ step1[4] = input[13];
+ step1[5] = input[5];
+ step1[6] = input[9];
+ step1[7] = input[1];
+ step1[8] = input[14];
+ step1[9] = input[6];
+ step1[10] = input[10];
+ step1[11] = input[2];
+ step1[12] = input[12];
+ step1[13] = input[4];
+ step1[14] = input[8];
+ step1[15] = input[0];
+
+ // stage 2
+ step2[0] = step1[0];
+ step2[1] = step1[1];
+ step2[2] = step1[2];
+ step2[3] = step1[3];
+ step2[4] = step1[4];
+ step2[5] = step1[5];
+ step2[6] = step1[6];
+ step2[7] = step1[7];
+
+ temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64;
+ temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64;
+ step2[8] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[15] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64;
+ temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64;
+ step2[9] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[14] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64;
+ temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64;
+ temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64;
+ step2[11] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[12] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ // stage 3
+ step1[0] = step2[0];
+ step1[1] = step2[1];
+ step1[2] = step2[2];
+ step1[3] = step2[3];
+
+ temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64;
+ temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64;
+ step1[4] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[7] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64;
+ temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), bd);
+
+ step1[8] = WRAPLOW(step2[8] + step2[9], bd);
+ step1[9] = WRAPLOW(step2[8] - step2[9], bd);
+ step1[10] = WRAPLOW(-step2[10] + step2[11], bd);
+ step1[11] = WRAPLOW(step2[10] + step2[11], bd);
+ step1[12] = WRAPLOW(step2[12] + step2[13], bd);
+ step1[13] = WRAPLOW(step2[12] - step2[13], bd);
+ step1[14] = WRAPLOW(-step2[14] + step2[15], bd);
+ step1[15] = WRAPLOW(step2[14] + step2[15], bd);
+
+ // stage 4
+ temp1 = (step1[0] + step1[1]) * cospi_16_64;
+ temp2 = (step1[0] - step1[1]) * cospi_16_64;
+ step2[0] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[1] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64;
+ temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64;
+ step2[2] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[3] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step2[4] = WRAPLOW(step1[4] + step1[5], bd);
+ step2[5] = WRAPLOW(step1[4] - step1[5], bd);
+ step2[6] = WRAPLOW(-step1[6] + step1[7], bd);
+ step2[7] = WRAPLOW(step1[6] + step1[7], bd);
+
+ step2[8] = step1[8];
+ step2[15] = step1[15];
+ temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64;
+ temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64;
+ step2[9] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[14] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64;
+ temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step2[11] = step1[11];
+ step2[12] = step1[12];
+
+ // stage 5
+ step1[0] = WRAPLOW(step2[0] + step2[3], bd);
+ step1[1] = WRAPLOW(step2[1] + step2[2], bd);
+ step1[2] = WRAPLOW(step2[1] - step2[2], bd);
+ step1[3] = WRAPLOW(step2[0] - step2[3], bd);
+ step1[4] = step2[4];
+ temp1 = (step2[6] - step2[5]) * cospi_16_64;
+ temp2 = (step2[5] + step2[6]) * cospi_16_64;
+ step1[5] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step1[6] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step1[7] = step2[7];
+
+ step1[8] = WRAPLOW(step2[8] + step2[11], bd);
+ step1[9] = WRAPLOW(step2[9] + step2[10], bd);
+ step1[10] = WRAPLOW(step2[9] - step2[10], bd);
+ step1[11] = WRAPLOW(step2[8] - step2[11], bd);
+ step1[12] = WRAPLOW(-step2[12] + step2[15], bd);
+ step1[13] = WRAPLOW(-step2[13] + step2[14], bd);
+ step1[14] = WRAPLOW(step2[13] + step2[14], bd);
+ step1[15] = WRAPLOW(step2[12] + step2[15], bd);
+
+ // stage 6
+ step2[0] = WRAPLOW(step1[0] + step1[7], bd);
+ step2[1] = WRAPLOW(step1[1] + step1[6], bd);
+ step2[2] = WRAPLOW(step1[2] + step1[5], bd);
+ step2[3] = WRAPLOW(step1[3] + step1[4], bd);
+ step2[4] = WRAPLOW(step1[3] - step1[4], bd);
+ step2[5] = WRAPLOW(step1[2] - step1[5], bd);
+ step2[6] = WRAPLOW(step1[1] - step1[6], bd);
+ step2[7] = WRAPLOW(step1[0] - step1[7], bd);
+ step2[8] = step1[8];
+ step2[9] = step1[9];
+ temp1 = (-step1[10] + step1[13]) * cospi_16_64;
+ temp2 = (step1[10] + step1[13]) * cospi_16_64;
+ step2[10] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[13] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ temp1 = (-step1[11] + step1[12]) * cospi_16_64;
+ temp2 = (step1[11] + step1[12]) * cospi_16_64;
+ step2[11] = WRAPLOW(dct_const_round_shift(temp1), bd);
+ step2[12] = WRAPLOW(dct_const_round_shift(temp2), bd);
+ step2[14] = step1[14];
+ step2[15] = step1[15];
+
+ // stage 7
+ output[0] = WRAPLOW(step2[0] + step2[15], bd);
+ output[1] = WRAPLOW(-step2[1] - step2[14], bd);
+ output[2] = WRAPLOW(step2[2] + step2[13], bd);
+ output[3] = WRAPLOW(-step2[3] - step2[12], bd);
+ output[4] = WRAPLOW(step2[4] + step2[11], bd);
+ output[5] = WRAPLOW(-step2[5] - step2[10], bd);
+ output[6] = WRAPLOW(step2[6] + step2[9], bd);
+ output[7] = WRAPLOW(-step2[7] - step2[8], bd);
+ output[8] = WRAPLOW(step2[7] - step2[8], bd);
+ output[9] = WRAPLOW(-step2[6] + step2[9], bd);
+ output[10] = WRAPLOW(step2[5] - step2[10], bd);
+ output[11] = WRAPLOW(-step2[4] + step2[11], bd);
+ output[12] = WRAPLOW(step2[3] - step2[12], bd);
+ output[13] = WRAPLOW(-step2[2] + step2[13], bd);
+ output[14] = WRAPLOW(step2[1] - step2[14], bd);
+ output[15] = WRAPLOW(-step2[0] + step2[15], bd);
+#else
// {sin(pi/17), sin(pi*2/17, ..., sin(pi*8/17)} * sqrt(2/17) * 2 * sqrt(2)
static const int32_t sinvalue_lookup[] = {
47852167, 94074787, 137093803, 175444254,
d411 * sinvalue_lookup[4] - d510 * sinvalue_lookup[5] +
d69 * sinvalue_lookup[6] - d78 * sinvalue_lookup[7];
output[15] = WRAPLOW(ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS)), bd);
+#endif // USE_DST2
}
static void highbd_inv_idtx_add_c(const tran_low_t *input, uint8_t *dest8,
#if CONFIG_EXT_TX
void fdst4(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ tran_high_t step[4];
+ tran_high_t temp1, temp2;
+
+ step[0] = input[0] - input[3];
+ step[1] = -input[1] + input[2];
+ step[2] = -input[1] - input[2];
+ step[3] = input[0] + input[3];
+
+ temp1 = (step[0] + step[1]) * cospi_16_64;
+ temp2 = (step[0] - step[1]) * cospi_16_64;
+ output[3] = fdct_round_shift(temp1);
+ output[1] = fdct_round_shift(temp2);
+ temp1 = step[2] * cospi_24_64 + step[3] * cospi_8_64;
+ temp2 = -step[2] * cospi_8_64 + step[3] * cospi_24_64;
+ output[2] = fdct_round_shift(temp1);
+ output[0] = fdct_round_shift(temp2);
+#else
// {sin(pi/5), sin(pi*2/5)} * sqrt(2/5) * sqrt(2)
static const int32_t sinvalue_lookup[] = {
141124871, 228344838,
output[2] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
sum = d03 * sinvalue_lookup[0] - d12 * sinvalue_lookup[1];
output[3] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
+#endif // USE_DST2
}
void fdst8(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16
+ tran_high_t t0, t1, t2, t3; // needs32
+ tran_high_t x0, x1, x2, x3; // canbe16
+
+ // stage 1
+ s0 = input[0] - input[7];
+ s1 = -input[1] + input[6];
+ s2 = input[2] - input[5];
+ s3 = -input[3] + input[4];
+ s4 = -input[3] - input[4];
+ s5 = input[2] + input[5];
+ s6 = -input[1] - input[6];
+ s7 = input[0] + input[7];
+
+ x0 = s0 + s3;
+ x1 = s1 + s2;
+ x2 = s1 - s2;
+ x3 = s0 - s3;
+ t0 = (x0 + x1) * cospi_16_64;
+ t1 = (x0 - x1) * cospi_16_64;
+ t2 = x2 * cospi_24_64 + x3 * cospi_8_64;
+ t3 = -x2 * cospi_8_64 + x3 * cospi_24_64;
+ output[7] = fdct_round_shift(t0);
+ output[5] = fdct_round_shift(t2);
+ output[3] = fdct_round_shift(t1);
+ output[1] = fdct_round_shift(t3);
+
+ // Stage 2
+ t0 = (s6 - s5) * cospi_16_64;
+ t1 = (s6 + s5) * cospi_16_64;
+ t2 = fdct_round_shift(t0);
+ t3 = fdct_round_shift(t1);
+
+ // Stage 3
+ x0 = s4 + t2;
+ x1 = s4 - t2;
+ x2 = s7 - t3;
+ x3 = s7 + t3;
+
+ // Stage 4
+ t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
+ t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
+ t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
+ t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
+ output[6] = fdct_round_shift(t0);
+ output[4] = fdct_round_shift(t2);
+ output[2] = fdct_round_shift(t1);
+ output[0] = fdct_round_shift(t3);
+#else
// {sin(pi/9), sin(pi*2/9), ..., sin(pi*4/9)} * sqrt(2/9) * 2
static const int sinvalue_lookup[] = {
86559612, 162678858, 219176632, 249238470
sum = d07 * sinvalue_lookup[0] - d16 * sinvalue_lookup[1] +
d25 * sinvalue_lookup[2] - d34 * sinvalue_lookup[3];
output[7] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
+#endif // USE_DST2
}
void fdst16(const tran_low_t *input, tran_low_t *output) {
+#if USE_DST2
+ tran_high_t step1[8]; // canbe16
+ tran_high_t step2[8]; // canbe16
+ tran_high_t step3[8]; // canbe16
+ tran_high_t in[8]; // canbe16
+ tran_high_t temp1, temp2; // needs32
+
+ // step 1
+ in[0] = input[0] - input[15];
+ in[1] = -input[1] + input[14];
+ in[2] = input[2] - input[13];
+ in[3] = -input[3] + input[12];
+ in[4] = input[4] - input[11];
+ in[5] = -input[5] + input[10];
+ in[6] = input[6] - input[ 9];
+ in[7] = -input[7] + input[ 8];
+
+ step1[0] = -input[7] - input[ 8];
+ step1[1] = input[6] + input[ 9];
+ step1[2] = -input[5] - input[10];
+ step1[3] = input[4] + input[11];
+ step1[4] = -input[3] - input[12];
+ step1[5] = input[2] + input[13];
+ step1[6] = -input[1] - input[14];
+ step1[7] = input[0] + input[15];
+
+ // fdct8(step, step);
+ {
+ tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16
+ tran_high_t t0, t1, t2, t3; // needs32
+ tran_high_t x0, x1, x2, x3; // canbe16
+
+ // stage 1
+ s0 = in[0] + in[7];
+ s1 = in[1] + in[6];
+ s2 = in[2] + in[5];
+ s3 = in[3] + in[4];
+ s4 = in[3] - in[4];
+ s5 = in[2] - in[5];
+ s6 = in[1] - in[6];
+ s7 = in[0] - in[7];
+
+ // fdct4(step, step);
+ x0 = s0 + s3;
+ x1 = s1 + s2;
+ x2 = s1 - s2;
+ x3 = s0 - s3;
+ t0 = (x0 + x1) * cospi_16_64;
+ t1 = (x0 - x1) * cospi_16_64;
+ t2 = x3 * cospi_8_64 + x2 * cospi_24_64;
+ t3 = x3 * cospi_24_64 - x2 * cospi_8_64;
+ output[15] = fdct_round_shift(t0);
+ output[11] = fdct_round_shift(t2);
+ output[7] = fdct_round_shift(t1);
+ output[3] = fdct_round_shift(t3);
+
+ // Stage 2
+ t0 = (s6 - s5) * cospi_16_64;
+ t1 = (s6 + s5) * cospi_16_64;
+ t2 = fdct_round_shift(t0);
+ t3 = fdct_round_shift(t1);
+
+ // Stage 3
+ x0 = s4 + t2;
+ x1 = s4 - t2;
+ x2 = s7 - t3;
+ x3 = s7 + t3;
+
+ // Stage 4
+ t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
+ t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
+ t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
+ t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
+ output[13] = fdct_round_shift(t0);
+ output[9] = fdct_round_shift(t2);
+ output[5] = fdct_round_shift(t1);
+ output[1] = fdct_round_shift(t3);
+ }
+
+ // step 2
+ temp1 = (step1[5] - step1[2]) * cospi_16_64;
+ temp2 = (step1[4] - step1[3]) * cospi_16_64;
+ step2[2] = fdct_round_shift(temp1);
+ step2[3] = fdct_round_shift(temp2);
+ temp1 = (step1[4] + step1[3]) * cospi_16_64;
+ temp2 = (step1[5] + step1[2]) * cospi_16_64;
+ step2[4] = fdct_round_shift(temp1);
+ step2[5] = fdct_round_shift(temp2);
+
+ // step 3
+ step3[0] = step1[0] + step2[3];
+ step3[1] = step1[1] + step2[2];
+ step3[2] = step1[1] - step2[2];
+ step3[3] = step1[0] - step2[3];
+ step3[4] = step1[7] - step2[4];
+ step3[5] = step1[6] - step2[5];
+ step3[6] = step1[6] + step2[5];
+ step3[7] = step1[7] + step2[4];
+
+ // step 4
+ temp1 = step3[1] * -cospi_8_64 + step3[6] * cospi_24_64;
+ temp2 = step3[2] * cospi_24_64 + step3[5] * cospi_8_64;
+ step2[1] = fdct_round_shift(temp1);
+ step2[2] = fdct_round_shift(temp2);
+ temp1 = step3[2] * cospi_8_64 - step3[5] * cospi_24_64;
+ temp2 = step3[1] * cospi_24_64 + step3[6] * cospi_8_64;
+ step2[5] = fdct_round_shift(temp1);
+ step2[6] = fdct_round_shift(temp2);
+
+ // step 5
+ step1[0] = step3[0] + step2[1];
+ step1[1] = step3[0] - step2[1];
+ step1[2] = step3[3] + step2[2];
+ step1[3] = step3[3] - step2[2];
+ step1[4] = step3[4] - step2[5];
+ step1[5] = step3[4] + step2[5];
+ step1[6] = step3[7] - step2[6];
+ step1[7] = step3[7] + step2[6];
+
+ // step 6
+ temp1 = step1[0] * cospi_30_64 + step1[7] * cospi_2_64;
+ temp2 = step1[1] * cospi_14_64 + step1[6] * cospi_18_64;
+ output[14] = fdct_round_shift(temp1);
+ output[6] = fdct_round_shift(temp2);
+
+ temp1 = step1[2] * cospi_22_64 + step1[5] * cospi_10_64;
+ temp2 = step1[3] * cospi_6_64 + step1[4] * cospi_26_64;
+ output[10] = fdct_round_shift(temp1);
+ output[2] = fdct_round_shift(temp2);
+
+ temp1 = step1[3] * -cospi_26_64 + step1[4] * cospi_6_64;
+ temp2 = step1[2] * -cospi_10_64 + step1[5] * cospi_22_64;
+ output[12] = fdct_round_shift(temp1);
+ output[4] = fdct_round_shift(temp2);
+
+ temp1 = step1[1] * -cospi_18_64 + step1[6] * cospi_14_64;
+ temp2 = step1[0] * -cospi_2_64 + step1[7] * cospi_30_64;
+ output[8] = fdct_round_shift(temp1);
+ output[0] = fdct_round_shift(temp2);
+#else
// {sin(pi/17), sin(pi*2/17, ..., sin(pi*8/17)} * sqrt(2/17) * 2 * sqrt(2)
static const int sinvalue_lookup[] = {
47852167, 94074787, 137093803, 175444254,
d411 * sinvalue_lookup[4] - d510 * sinvalue_lookup[5] +
d69 * sinvalue_lookup[6] - d78 * sinvalue_lookup[7];
output[15] = ROUND_POWER_OF_TWO(sum, (2 * DCT_CONST_BITS));
+#endif // USE_DST2
}
#endif // CONFIG_EXT_TX