Commit ba69089e authored by Angie Chiang's avatar Angie Chiang

Add iadst4

Change-Id: Ie419b2b1e939a41c30ed609e1ba46f5f6609b2a5
parent 74678334
......@@ -698,3 +698,68 @@ void vp10_idct32_new(const int32_t *input, int32_t *output,
bf1[31] = bf0[0] - bf0[31];
range_check(stage, input, bf1, size, stage_range[stage]);
}
void vp10_iadst4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range) {
const int32_t size = 4;
const int32_t *cospi;
int32_t stage = 0;
int32_t *bf0, *bf1;
int32_t step[4];
// stage 0;
range_check(stage, input, input, size, stage_range[stage]);
// stage 1;
stage++;
bf1 = output;
bf1[0] = input[0];
bf1[1] = -input[3];
bf1[2] = -input[1];
bf1[3] = input[2];
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 2
stage++;
cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
bf0 = output;
bf1 = step;
bf1[0] = bf0[0];
bf1[1] = bf0[1];
bf1[2] = half_btf(cospi[32], bf0[2], cospi[32], bf0[3], cos_bit[stage]);
bf1[3] = half_btf(cospi[32], bf0[2], -cospi[32], bf0[3], cos_bit[stage]);
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 3
stage++;
cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
bf0 = step;
bf1 = output;
bf1[0] = bf0[0] + bf0[2];
bf1[1] = bf0[1] + bf0[3];
bf1[2] = bf0[0] - bf0[2];
bf1[3] = bf0[1] - bf0[3];
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 4
stage++;
cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
bf0 = output;
bf1 = step;
bf1[0] = half_btf(cospi[8], bf0[0], cospi[56], bf0[1], cos_bit[stage]);
bf1[1] = half_btf(cospi[56], bf0[0], -cospi[8], bf0[1], cos_bit[stage]);
bf1[2] = half_btf(cospi[40], bf0[2], cospi[24], bf0[3], cos_bit[stage]);
bf1[3] = half_btf(cospi[24], bf0[2], -cospi[40], bf0[3], cos_bit[stage]);
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 5
stage++;
bf0 = step;
bf1 = output;
bf1[0] = bf0[1];
bf1[1] = bf0[2];
bf1[2] = bf0[3];
bf1[3] = bf0[0];
range_check(stage, input, bf1, size, stage_range[stage]);
}
......@@ -26,6 +26,8 @@ void vp10_idct16_new(const int32_t *input, int32_t *output,
void vp10_idct32_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
void vp10_iadst4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
#ifdef __cplusplus
}
......
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