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Diffstat (limited to 'ffmpeg/libavcodec/dcadsp.c')
-rw-r--r--ffmpeg/libavcodec/dcadsp.c82
1 files changed, 0 insertions, 82 deletions
diff --git a/ffmpeg/libavcodec/dcadsp.c b/ffmpeg/libavcodec/dcadsp.c
deleted file mode 100644
index abeba24..0000000
--- a/ffmpeg/libavcodec/dcadsp.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2004 Gildas Bazin
- * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "config.h"
-#include "libavutil/attributes.h"
-#include "libavutil/intreadwrite.h"
-#include "dcadsp.h"
-
-static void dca_lfe_fir_c(float *out, const float *in, const float *coefs,
- int decifactor, float scale)
-{
- float *out2 = out + decifactor;
- const float *cf0 = coefs;
- const float *cf1 = coefs + 256;
- int j, k;
-
- /* One decimated sample generates 2*decifactor interpolated ones */
- for (k = 0; k < decifactor; k++) {
- float v0 = 0.0;
- float v1 = 0.0;
- for (j = 0; j < 256 / decifactor; j++) {
- float s = in[-j];
- v0 += s * *cf0++;
- v1 += s * *--cf1;
- }
- *out++ = v0 * scale;
- *out2++ = v1 * scale;
- }
-}
-
-static void dca_qmf_32_subbands(float samples_in[32][8], int sb_act,
- SynthFilterContext *synth, FFTContext *imdct,
- float synth_buf_ptr[512],
- int *synth_buf_offset, float synth_buf2[32],
- const float window[512], float *samples_out,
- float raXin[32], float scale)
-{
- int i;
- int subindex;
-
- for (i = sb_act; i < 32; i++)
- raXin[i] = 0.0;
-
- /* Reconstructed channel sample index */
- for (subindex = 0; subindex < 8; subindex++) {
- /* Load in one sample from each subband and clear inactive subbands */
- for (i = 0; i < sb_act; i++) {
- unsigned sign = (i - 1) & 2;
- uint32_t v = AV_RN32A(&samples_in[i][subindex]) ^ sign << 30;
- AV_WN32A(&raXin[i], v);
- }
-
- synth->synth_filter_float(imdct, synth_buf_ptr, synth_buf_offset,
- synth_buf2, window, samples_out, raXin, scale);
- samples_out += 32;
- }
-}
-
-av_cold void ff_dcadsp_init(DCADSPContext *s)
-{
- s->lfe_fir = dca_lfe_fir_c;
- s->qmf_32_subbands = dca_qmf_32_subbands;
- if (ARCH_ARM) ff_dcadsp_init_arm(s);
-}