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Add fadst4

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Change-Id: I320a1cf82d1705e5ec7fe1870327f70ce8493489
This commit is contained in:
Angie Chiang
2015-10-27 16:29:29 -07:00
parent 0a6cab1dbc
commit 1ef285bfe9
2 changed files with 68 additions and 0 deletions
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65
vp10/common/vp10_fwd_txfm1d.c
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@@ -698,3 +698,68 @@ void vp10_fdct32_new(const int32_t *input, int32_t *output,
bf1[31] = bf0[31];
range_check(stage, input, bf1, size, stage_range[stage]);
}
void vp10_fadst4_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[3];
bf1[1] = input[0];
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] = half_btf(cospi[8], bf0[0], cospi[56], bf0[1], cos_bit[stage]);
bf1[1] = half_btf(-cospi[8], bf0[1], cospi[56], bf0[0], cos_bit[stage]);
bf1[2] = half_btf(cospi[40], bf0[2], cospi[24], bf0[3], cos_bit[stage]);
bf1[3] = half_btf(-cospi[40], bf0[3], cospi[24], bf0[2], 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[2] + bf0[0];
bf1[3] = -bf0[3] + bf0[1];
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] = 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[3], cospi[32], bf0[2], cos_bit[stage]);
range_check(stage, input, bf1, size, stage_range[stage]);
// stage 5
stage++;
bf0 = step;
bf1 = output;
bf1[0] = bf0[0];
bf1[1] = -bf0[2];
bf1[2] = bf0[3];
bf1[3] = -bf0[1];
range_check(stage, input, bf1, size, stage_range[stage]);
}

3
vp10/common/vp10_fwd_txfm1d.h
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@@ -26,6 +26,9 @@ void vp10_fdct16_new(const int32_t *input, int32_t *output,
void vp10_fdct32_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
void vp10_fadst4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
#ifdef __cplusplus
}
#endif