diff options
Diffstat (limited to 'third_party/aom/aom_dsp/fwd_txfm.c')
-rw-r--r-- | third_party/aom/aom_dsp/fwd_txfm.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/third_party/aom/aom_dsp/fwd_txfm.c b/third_party/aom/aom_dsp/fwd_txfm.c deleted file mode 100644 index e50f951c1..000000000 --- a/third_party/aom/aom_dsp/fwd_txfm.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright (c) 2016, Alliance for Open Media. All rights reserved - * - * This source code is subject to the terms of the BSD 2 Clause License and - * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License - * was not distributed with this source code in the LICENSE file, you can - * obtain it at www.aomedia.org/license/software. If the Alliance for Open - * Media Patent License 1.0 was not distributed with this source code in the - * PATENTS file, you can obtain it at www.aomedia.org/license/patent. - */ - -#include <assert.h> -#include "aom_dsp/txfm_common.h" -#include "config/aom_dsp_rtcd.h" - -void aom_fdct8x8_c(const int16_t *input, tran_low_t *final_output, int stride) { - int i, j; - tran_low_t intermediate[64]; - int pass; - tran_low_t *output = intermediate; - const tran_low_t *in = NULL; - - // Transform columns - for (pass = 0; pass < 2; ++pass) { - tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16 - tran_high_t t0, t1, t2, t3; // needs32 - tran_high_t x0, x1, x2, x3; // canbe16 - - for (i = 0; i < 8; i++) { - // stage 1 - if (pass == 0) { - s0 = (input[0 * stride] + input[7 * stride]) * 4; - s1 = (input[1 * stride] + input[6 * stride]) * 4; - s2 = (input[2 * stride] + input[5 * stride]) * 4; - s3 = (input[3 * stride] + input[4 * stride]) * 4; - s4 = (input[3 * stride] - input[4 * stride]) * 4; - s5 = (input[2 * stride] - input[5 * stride]) * 4; - s6 = (input[1 * stride] - input[6 * stride]) * 4; - s7 = (input[0 * stride] - input[7 * stride]) * 4; - ++input; - } else { - s0 = in[0 * 8] + in[7 * 8]; - s1 = in[1 * 8] + in[6 * 8]; - s2 = in[2 * 8] + in[5 * 8]; - s3 = in[3 * 8] + in[4 * 8]; - s4 = in[3 * 8] - in[4 * 8]; - s5 = in[2 * 8] - in[5 * 8]; - s6 = in[1 * 8] - in[6 * 8]; - s7 = in[0 * 8] - in[7 * 8]; - ++in; - } - - // fdct4(step, step); - x0 = s0 + s3; - x1 = s1 + s2; - x2 = s1 - s2; - x3 = s0 - s3; - t0 = (x0 + x1) * cospi_16_64; - t1 = (x0 - x1) * cospi_16_64; - t2 = x2 * cospi_24_64 + x3 * cospi_8_64; - t3 = -x2 * cospi_8_64 + x3 * cospi_24_64; - output[0] = (tran_low_t)fdct_round_shift(t0); - output[2] = (tran_low_t)fdct_round_shift(t2); - output[4] = (tran_low_t)fdct_round_shift(t1); - output[6] = (tran_low_t)fdct_round_shift(t3); - - // Stage 2 - t0 = (s6 - s5) * cospi_16_64; - t1 = (s6 + s5) * cospi_16_64; - t2 = fdct_round_shift(t0); - t3 = fdct_round_shift(t1); - - // Stage 3 - x0 = s4 + t2; - x1 = s4 - t2; - x2 = s7 - t3; - x3 = s7 + t3; - - // Stage 4 - t0 = x0 * cospi_28_64 + x3 * cospi_4_64; - t1 = x1 * cospi_12_64 + x2 * cospi_20_64; - t2 = x2 * cospi_12_64 + x1 * -cospi_20_64; - t3 = x3 * cospi_28_64 + x0 * -cospi_4_64; - output[1] = (tran_low_t)fdct_round_shift(t0); - output[3] = (tran_low_t)fdct_round_shift(t2); - output[5] = (tran_low_t)fdct_round_shift(t1); - output[7] = (tran_low_t)fdct_round_shift(t3); - output += 8; - } - in = intermediate; - output = final_output; - } - - // Rows - for (i = 0; i < 8; ++i) { - for (j = 0; j < 8; ++j) final_output[j + i * 8] /= 2; - } -} - -void aom_highbd_fdct8x8_c(const int16_t *input, tran_low_t *final_output, - int stride) { - aom_fdct8x8_c(input, final_output, stride); -} |