Add idct16
Change-Id: I8e5ba3a3f9b64ccbf038e371525e897774729b06
This commit is contained in:
Angie Chiang
Родитель
bd9db2f55b
Коммит
d3cee565ad
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@ -166,3 +166,174 @@ void vp10_idct8_new(const int32_t *input, int32_t *output,
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bf1[7] = bf0[0] - bf0[7];
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range_check(stage, input, bf1, size, stage_range[stage]);
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}
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void vp10_idct16_new(const int32_t *input, int32_t *output,
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const int8_t *cos_bit, const int8_t *stage_range) {
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const int32_t size = 16;
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const int32_t *cospi;
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int32_t stage = 0;
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int32_t *bf0, *bf1;
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int32_t step[16];
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// stage 0;
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range_check(stage, input, input, size, stage_range[stage]);
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// stage 1;
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stage++;
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bf1 = output;
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bf1[0] = input[0];
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bf1[1] = input[8];
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bf1[2] = input[4];
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bf1[3] = input[12];
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bf1[4] = input[2];
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bf1[5] = input[10];
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bf1[6] = input[6];
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bf1[7] = input[14];
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bf1[8] = input[1];
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bf1[9] = input[9];
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bf1[10] = input[5];
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bf1[11] = input[13];
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bf1[12] = input[3];
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bf1[13] = input[11];
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bf1[14] = input[7];
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bf1[15] = input[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 2
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stage++;
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cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
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bf0 = output;
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bf1 = step;
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bf1[0] = bf0[0];
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bf1[1] = bf0[1];
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bf1[2] = bf0[2];
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bf1[3] = bf0[3];
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bf1[4] = bf0[4];
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bf1[5] = bf0[5];
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bf1[6] = bf0[6];
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bf1[7] = bf0[7];
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bf1[8] = half_btf(cospi[60], bf0[8], -cospi[4], bf0[15], cos_bit[stage]);
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bf1[9] = half_btf(cospi[28], bf0[9], -cospi[36], bf0[14], cos_bit[stage]);
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bf1[10] = half_btf(cospi[44], bf0[10], -cospi[20], bf0[13], cos_bit[stage]);
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bf1[11] = half_btf(cospi[12], bf0[11], -cospi[52], bf0[12], cos_bit[stage]);
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bf1[12] = half_btf(cospi[52], bf0[11], cospi[12], bf0[12], cos_bit[stage]);
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bf1[13] = half_btf(cospi[20], bf0[10], cospi[44], bf0[13], cos_bit[stage]);
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bf1[14] = half_btf(cospi[36], bf0[9], cospi[28], bf0[14], cos_bit[stage]);
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bf1[15] = half_btf(cospi[4], bf0[8], cospi[60], bf0[15], cos_bit[stage]);
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 3
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stage++;
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cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
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bf0 = step;
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bf1 = output;
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bf1[0] = bf0[0];
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bf1[1] = bf0[1];
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bf1[2] = bf0[2];
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bf1[3] = bf0[3];
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bf1[4] = half_btf(cospi[56], bf0[4], -cospi[8], bf0[7], cos_bit[stage]);
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bf1[5] = half_btf(cospi[24], bf0[5], -cospi[40], bf0[6], cos_bit[stage]);
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bf1[6] = half_btf(cospi[40], bf0[5], cospi[24], bf0[6], cos_bit[stage]);
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bf1[7] = half_btf(cospi[8], bf0[4], cospi[56], bf0[7], cos_bit[stage]);
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bf1[8] = bf0[8] + bf0[9];
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bf1[9] = bf0[8] - bf0[9];
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bf1[10] = -bf0[10] + bf0[11];
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bf1[11] = bf0[10] + bf0[11];
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bf1[12] = bf0[12] + bf0[13];
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bf1[13] = bf0[12] - bf0[13];
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bf1[14] = -bf0[14] + bf0[15];
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bf1[15] = bf0[14] + bf0[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 4
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stage++;
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cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
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bf0 = output;
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bf1 = step;
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bf1[0] = half_btf(cospi[32], bf0[0], cospi[32], bf0[1], cos_bit[stage]);
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bf1[1] = half_btf(cospi[32], bf0[0], -cospi[32], bf0[1], cos_bit[stage]);
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bf1[2] = half_btf(cospi[48], bf0[2], -cospi[16], bf0[3], cos_bit[stage]);
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bf1[3] = half_btf(cospi[16], bf0[2], cospi[48], bf0[3], cos_bit[stage]);
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bf1[4] = bf0[4] + bf0[5];
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bf1[5] = bf0[4] - bf0[5];
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bf1[6] = -bf0[6] + bf0[7];
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bf1[7] = bf0[6] + bf0[7];
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bf1[8] = bf0[8];
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bf1[9] = half_btf(-cospi[16], bf0[9], cospi[48], bf0[14], cos_bit[stage]);
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bf1[10] = half_btf(-cospi[48], bf0[10], -cospi[16], bf0[13], cos_bit[stage]);
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bf1[11] = bf0[11];
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bf1[12] = bf0[12];
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bf1[13] = half_btf(-cospi[16], bf0[10], cospi[48], bf0[13], cos_bit[stage]);
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bf1[14] = half_btf(cospi[48], bf0[9], cospi[16], bf0[14], cos_bit[stage]);
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bf1[15] = bf0[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 5
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stage++;
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cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
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bf0 = step;
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bf1 = output;
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bf1[0] = bf0[0] + bf0[3];
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bf1[1] = bf0[1] + bf0[2];
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bf1[2] = bf0[1] - bf0[2];
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bf1[3] = bf0[0] - bf0[3];
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bf1[4] = bf0[4];
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bf1[5] = half_btf(-cospi[32], bf0[5], cospi[32], bf0[6], cos_bit[stage]);
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bf1[6] = half_btf(cospi[32], bf0[5], cospi[32], bf0[6], cos_bit[stage]);
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bf1[7] = bf0[7];
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bf1[8] = bf0[8] + bf0[11];
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bf1[9] = bf0[9] + bf0[10];
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bf1[10] = bf0[9] - bf0[10];
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bf1[11] = bf0[8] - bf0[11];
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bf1[12] = -bf0[12] + bf0[15];
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bf1[13] = -bf0[13] + bf0[14];
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bf1[14] = bf0[13] + bf0[14];
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bf1[15] = bf0[12] + bf0[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 6
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stage++;
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cospi = cospi_arr[cos_bit[stage] - cos_bit_min];
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bf0 = output;
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bf1 = step;
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bf1[0] = bf0[0] + bf0[7];
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bf1[1] = bf0[1] + bf0[6];
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bf1[2] = bf0[2] + bf0[5];
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bf1[3] = bf0[3] + bf0[4];
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bf1[4] = bf0[3] - bf0[4];
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bf1[5] = bf0[2] - bf0[5];
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bf1[6] = bf0[1] - bf0[6];
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bf1[7] = bf0[0] - bf0[7];
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bf1[8] = bf0[8];
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bf1[9] = bf0[9];
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bf1[10] = half_btf(-cospi[32], bf0[10], cospi[32], bf0[13], cos_bit[stage]);
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bf1[11] = half_btf(-cospi[32], bf0[11], cospi[32], bf0[12], cos_bit[stage]);
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bf1[12] = half_btf(cospi[32], bf0[11], cospi[32], bf0[12], cos_bit[stage]);
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bf1[13] = half_btf(cospi[32], bf0[10], cospi[32], bf0[13], cos_bit[stage]);
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bf1[14] = bf0[14];
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bf1[15] = bf0[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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// stage 7
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stage++;
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bf0 = step;
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bf1 = output;
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bf1[0] = bf0[0] + bf0[15];
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bf1[1] = bf0[1] + bf0[14];
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bf1[2] = bf0[2] + bf0[13];
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bf1[3] = bf0[3] + bf0[12];
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bf1[4] = bf0[4] + bf0[11];
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bf1[5] = bf0[5] + bf0[10];
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bf1[6] = bf0[6] + bf0[9];
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bf1[7] = bf0[7] + bf0[8];
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bf1[8] = bf0[7] - bf0[8];
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bf1[9] = bf0[6] - bf0[9];
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bf1[10] = bf0[5] - bf0[10];
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bf1[11] = bf0[4] - bf0[11];
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bf1[12] = bf0[3] - bf0[12];
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bf1[13] = bf0[2] - bf0[13];
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bf1[14] = bf0[1] - bf0[14];
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bf1[15] = bf0[0] - bf0[15];
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range_check(stage, input, bf1, size, stage_range[stage]);
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}
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@ -21,6 +21,8 @@ void vp10_idct4_new(const int32_t *input, int32_t *output,
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const int8_t *cos_bit, const int8_t *stage_range);
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void vp10_idct8_new(const int32_t *input, int32_t *output,
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const int8_t *cos_bit, const int8_t *stage_range);
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void vp10_idct16_new(const int32_t *input, int32_t *output,
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const int8_t *cos_bit, const int8_t *stage_range);
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#ifdef __cplusplus
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}
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