making act segmenter

1 files changed, 0 insertions, 222 deletions

diff --git a/ffmpeg1/libavcodec/dct.c b/ffmpeg1/libavcodec/dct.c
deleted file mode 100644
index e2ac0a8..0000000
--- a/ffmpeg1/libavcodec/dct.c
+++ /dev/null
@@ -1,222 +0,0 @@
-/*
- * (I)DCT Transforms
- * Copyright (c) 2009 Peter Ross <pross@xvid.org>
- * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
- * Copyright (c) 2010 Vitor Sessak
- *
- * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-/**
- * @file
- * (Inverse) Discrete Cosine Transforms. These are also known as the
- * type II and type III DCTs respectively.
- */
-
-#include <math.h>
-#include <string.h>
-
-#include "libavutil/mathematics.h"
-#include "dct.h"
-#include "dct32.h"
-
-/* sin((M_PI * x / (2 * n)) */
-#define SIN(s, n, x) (s->costab[(n) - (x)])
-
-/* cos((M_PI * x / (2 * n)) */
-#define COS(s, n, x) (s->costab[x])
-
-static void ff_dst_calc_I_c(DCTContext *ctx, FFTSample *data)
-{
-    int n = 1 << ctx->nbits;
-    int i;
-
-    data[0] = 0;
-    for (i = 1; i < n / 2; i++) {
-        float tmp1   = data[i    ];
-        float tmp2   = data[n - i];
-        float s      = SIN(ctx, n, 2 * i);
-
-        s           *= tmp1 + tmp2;
-        tmp1         = (tmp1 - tmp2) * 0.5f;
-        data[i]      = s + tmp1;
-        data[n - i]  = s - tmp1;
-    }
-
-    data[n / 2] *= 2;
-    ctx->rdft.rdft_calc(&ctx->rdft, data);
-
-    data[0] *= 0.5f;
-
-    for (i = 1; i < n - 2; i += 2) {
-        data[i + 1] +=  data[i - 1];
-        data[i]      = -data[i + 2];
-    }
-
-    data[n - 1] = 0;
-}
-
-static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
-{
-    int n = 1 << ctx->nbits;
-    int i;
-    float next = -0.5f * (data[0] - data[n]);
-
-    for (i = 0; i < n / 2; i++) {
-        float tmp1 = data[i];
-        float tmp2 = data[n - i];
-        float s    = SIN(ctx, n, 2 * i);
-        float c    = COS(ctx, n, 2 * i);
-
-        c *= tmp1 - tmp2;
-        s *= tmp1 - tmp2;
-
-        next += c;
-
-        tmp1        = (tmp1 + tmp2) * 0.5f;
-        data[i]     = tmp1 - s;
-        data[n - i] = tmp1 + s;
-    }
-
-    ctx->rdft.rdft_calc(&ctx->rdft, data);
-    data[n] = data[1];
-    data[1] = next;
-
-    for (i = 3; i <= n; i += 2)
-        data[i] = data[i - 2] - data[i];
-}
-
-static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
-{
-    int n = 1 << ctx->nbits;
-    int i;
-
-    float next  = data[n - 1];
-    float inv_n = 1.0f / n;
-
-    for (i = n - 2; i >= 2; i -= 2) {
-        float val1 = data[i];
-        float val2 = data[i - 1] - data[i + 1];
-        float c    = COS(ctx, n, i);
-        float s    = SIN(ctx, n, i);
-
-        data[i]     = c * val1 + s * val2;
-        data[i + 1] = s * val1 - c * val2;
-    }
-
-    data[1] = 2 * next;
-
-    ctx->rdft.rdft_calc(&ctx->rdft, data);
-
-    for (i = 0; i < n / 2; i++) {
-        float tmp1 = data[i]         * inv_n;
-        float tmp2 = data[n - i - 1] * inv_n;
-        float csc  = ctx->csc2[i] * (tmp1 - tmp2);
-
-        tmp1            += tmp2;
-        data[i]          = tmp1 + csc;
-        data[n - i - 1]  = tmp1 - csc;
-    }
-}
-
-static void ff_dct_calc_II_c(DCTContext *ctx, FFTSample *data)
-{
-    int n = 1 << ctx->nbits;
-    int i;
-    float next;
-
-    for (i = 0; i < n / 2; i++) {
-        float tmp1 = data[i];
-        float tmp2 = data[n - i - 1];
-        float s    = SIN(ctx, n, 2 * i + 1);
-
-        s    *= tmp1 - tmp2;
-        tmp1  = (tmp1 + tmp2) * 0.5f;
-
-        data[i]     = tmp1 + s;
-        data[n-i-1] = tmp1 - s;
-    }
-
-    ctx->rdft.rdft_calc(&ctx->rdft, data);
-
-    next     = data[1] * 0.5;
-    data[1] *= -1;
-
-    for (i = n - 2; i >= 0; i -= 2) {
-        float inr = data[i    ];
-        float ini = data[i + 1];
-        float c   = COS(ctx, n, i);
-        float s   = SIN(ctx, n, i);
-
-        data[i]     = c * inr + s * ini;
-        data[i + 1] = next;
-
-        next += s * inr - c * ini;
-    }
-}
-
-static void dct32_func(DCTContext *ctx, FFTSample *data)
-{
-    ctx->dct32(data, data);
-}
-
-av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
-{
-    int n = 1 << nbits;
-    int i;
-
-    memset(s, 0, sizeof(*s));
-
-    s->nbits   = nbits;
-    s->inverse = inverse;
-
-    if (inverse == DCT_II && nbits == 5) {
-        s->dct_calc = dct32_func;
-    } else {
-        ff_init_ff_cos_tabs(nbits + 2);
-
-        s->costab = ff_cos_tabs[nbits + 2];
-        s->csc2   = av_malloc(n / 2 * sizeof(FFTSample));
-
-        if (ff_rdft_init(&s->rdft, nbits, inverse == DCT_III) < 0) {
-            av_free(s->csc2);
-            return -1;
-        }
-
-        for (i = 0; i < n / 2; i++)
-            s->csc2[i] = 0.5 / sin((M_PI / (2 * n) * (2 * i + 1)));
-
-        switch (inverse) {
-        case DCT_I  : s->dct_calc = ff_dct_calc_I_c;   break;
-        case DCT_II : s->dct_calc = ff_dct_calc_II_c;  break;
-        case DCT_III: s->dct_calc = ff_dct_calc_III_c; break;
-        case DST_I  : s->dct_calc = ff_dst_calc_I_c;   break;
-        }
-    }
-
-    s->dct32 = ff_dct32_float;
-    if (ARCH_X86)
-        ff_dct_init_x86(s);
-
-    return 0;
-}
-
-av_cold void ff_dct_end(DCTContext *s)
-{
-    ff_rdft_end(&s->rdft);
-    av_free(s->csc2);
-}