Add idct8
Change-Id: I8092a6f229b196c5c8b7dcd2dff8aaf68253e422
diff --git a/vp10/common/vp10_inv_txfm1d.c b/vp10/common/vp10_inv_txfm1d.c
index 55ad4a9..0e64fc1 100644
--- a/vp10/common/vp10_inv_txfm1d.c
+++ b/vp10/common/vp10_inv_txfm1d.c
@@ -81,3 +81,88 @@
bf1[3] = bf0[0] - bf0[3];
range_check(stage, input, bf1, size, stage_range[stage]);
}
+
+void vp10_idct8_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];
+ bf1[1] = input[4];
+ bf1[2] = input[2];
+ bf1[3] = input[6];
+ bf1[4] = input[1];
+ bf1[5] = input[5];
+ bf1[6] = input[3];
+ bf1[7] = input[7];
+ 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] = 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[40], bf0[5], cospi[24], bf0[6], cos_bit[stage]);
+ bf1[7] = half_btf(cospi[8], bf0[4], cospi[56], bf0[7], 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] = half_btf(cospi[32], bf0[0], cospi[32], bf0[1], cos_bit[stage]);
+ bf1[1] = half_btf(cospi[32], bf0[0], -cospi[32], bf0[1], cos_bit[stage]);
+ bf1[2] = half_btf(cospi[48], bf0[2], -cospi[16], bf0[3], cos_bit[stage]);
+ bf1[3] = half_btf(cospi[16], bf0[2], cospi[48], bf0[3], cos_bit[stage]);
+ bf1[4] = bf0[4] + bf0[5];
+ bf1[5] = bf0[4] - bf0[5];
+ bf1[6] = -bf0[6] + bf0[7];
+ bf1[7] = bf0[6] + bf0[7];
+ 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] + bf0[3];
+ bf1[1] = bf0[1] + bf0[2];
+ bf1[2] = bf0[1] - bf0[2];
+ bf1[3] = bf0[0] - bf0[3];
+ 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[5], cospi[32], bf0[6], cos_bit[stage]);
+ bf1[7] = bf0[7];
+ range_check(stage, input, bf1, size, stage_range[stage]);
+
+ // stage 5
+ stage++;
+ bf0 = step;
+ bf1 = output;
+ bf1[0] = bf0[0] + bf0[7];
+ bf1[1] = bf0[1] + bf0[6];
+ bf1[2] = bf0[2] + bf0[5];
+ bf1[3] = bf0[3] + bf0[4];
+ bf1[4] = bf0[3] - bf0[4];
+ bf1[5] = bf0[2] - bf0[5];
+ bf1[6] = bf0[1] - bf0[6];
+ bf1[7] = bf0[0] - bf0[7];
+ range_check(stage, input, bf1, size, stage_range[stage]);
+}
diff --git a/vp10/common/vp10_inv_txfm1d.h b/vp10/common/vp10_inv_txfm1d.h
index 2ce4234..d0763e4 100644
--- a/vp10/common/vp10_inv_txfm1d.h
+++ b/vp10/common/vp10_inv_txfm1d.h
@@ -19,6 +19,8 @@
void vp10_idct4_new(const int32_t *input, int32_t *output,
const int8_t *cos_bit, const int8_t *stage_range);
+void vp10_idct8_new(const int32_t *input, int32_t *output,
+ const int8_t *cos_bit, const int8_t *stage_range);
#ifdef __cplusplus
}
