Commit 3eb719f6 authored by Angie Chiang's avatar Angie Chiang

Add fdct8

Change-Id: I66b884bc831324b5295c7874aa23f62042157834
parent ba78f80b
......@@ -81,3 +81,88 @@ void vp10_fdct4_new(const int32_t *input, int32_t *output,
bf1[3] = bf0[3];
range_check(stage, input, bf1, size, stage_range[stage]);
}
void vp10_fdct8_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range) {
const int32_t size = 8;
const int32_t *cospi;
int32_t stage = 0;
int32_t *bf0, *bf1;
int32_t step[8];
// stage 0;
range_check(stage, input, input, size, stage_range[stage]);
// stage 1;
stage++;
bf1 = output;
bf1[0] = input[0] + input[7];
bf1[1] = input[1] + input[6];
bf1[2] = input[2] + input[5];
bf1[3] = input[3] + input[4];
bf1[4] = -input[4] + input[3];
bf1[5] = -input[5] + input[2];
bf1[6] = -input[6] + input[1];
bf1[7] = -input[7] + input[0];
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] + bf0[3];
bf1[1] = bf0[1] + bf0[2];
bf1[2] = -bf0[2] + bf0[1];
bf1[3] = -bf0[3] + bf0[0];
bf1[4] = bf0[4];
bf1[5] = half_btf(-cospi[32], bf0[5], cospi[32], bf0[6], cos_bit[stage]);
bf1[6] = half_btf(cospi[32], bf0[6], cospi[32], bf0[5], cos_bit[stage]);
bf1[7] = bf0[7];
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] = half_btf(cospi[32], bf0[0], cospi[32], bf0[1], cos_bit[stage]);
bf1[1] = half_btf(-cospi[32], bf0[1], cospi[32], bf0[0], cos_bit[stage]);
bf1[2] = half_btf(cospi[48], bf0[2], cospi[16], bf0[3], cos_bit[stage]);
bf1[3] = half_btf(cospi[48], bf0[3], -cospi[16], bf0[2], cos_bit[stage]);
bf1[4] = bf0[4] + bf0[5];
bf1[5] = -bf0[5] + bf0[4];
bf1[6] = -bf0[6] + bf0[7];
bf1[7] = bf0[7] + bf0[6];
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] = bf0[2];
bf1[3] = bf0[3];
bf1[4] = half_btf(cospi[56], bf0[4], cospi[8], bf0[7], cos_bit[stage]);
bf1[5] = half_btf(cospi[24], bf0[5], cospi[40], bf0[6], cos_bit[stage]);
bf1[6] = half_btf(cospi[24], bf0[6], -cospi[40], bf0[5], cos_bit[stage]);
bf1[7] = half_btf(cospi[56], bf0[7], -cospi[8], bf0[4], 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[4];
bf1[2] = bf0[2];
bf1[3] = bf0[6];
bf1[4] = bf0[1];
bf1[5] = bf0[5];
bf1[6] = bf0[3];
bf1[7] = bf0[7];
range_check(stage, input, bf1, size, stage_range[stage]);
}
......@@ -19,6 +19,8 @@ extern "C" {
void vp10_fdct4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
void vp10_fdct8_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
#ifdef __cplusplus
}
......
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