1 files changed, 0 insertions, 87 deletions
diff --git a/ffmpeg1/libavcodec/adx.c b/ffmpeg1/libavcodec/adx.c
deleted file mode 100644
index 4c88f81..0000000
--- a/ffmpeg1/libavcodec/adx.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (c) 2011  Justin Ruggles
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/common.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/mathematics.h"
-#include "adx.h"
-
-void ff_adx_calculate_coeffs(int cutoff, int sample_rate, int bits, int *coeff)
-{
-    double a, b, c;
-
-    a = M_SQRT2 - cos(2.0 * M_PI * cutoff / sample_rate);
-    b = M_SQRT2 - 1.0;
-    c = (a - sqrt((a + b) * (a - b))) / b;
-
-    coeff[0] = lrintf(c * 2.0  * (1 << bits));
-    coeff[1] = lrintf(-(c * c) * (1 << bits));
-}
-
-int avpriv_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,
-                             int bufsize, int *header_size, int *coeff)
-{
-    int offset, cutoff;
-
-    if (bufsize < 24)
-        return AVERROR_INVALIDDATA;
-
-    if (AV_RB16(buf) != 0x8000)
-        return AVERROR_INVALIDDATA;
-    offset = AV_RB16(buf + 2) + 4;
-
-    if (offset < 6) {
-        av_log(avctx, AV_LOG_ERROR, "offset is prior data\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    /* if copyright string is within the provided data, validate it */
-    if (bufsize >= offset && memcmp(buf + offset - 6, "(c)CRI", 6))
-        return AVERROR_INVALIDDATA;
-
-    /* check for encoding=3 block_size=18, sample_size=4 */
-    if (buf[4] != 3 || buf[5] != 18 || buf[6] != 4) {
-        avpriv_request_sample(avctx, "Support for this ADX format");
-        return AVERROR_PATCHWELCOME;
-    }
-
-    /* channels */
-    avctx->channels = buf[7];
-    if (avctx->channels <= 0 || avctx->channels > 2)
-        return AVERROR_INVALIDDATA;
-
-    /* sample rate */
-    avctx->sample_rate = AV_RB32(buf + 8);
-    if (avctx->sample_rate < 1 ||
-        avctx->sample_rate > INT_MAX / (avctx->channels * BLOCK_SIZE * 8))
-        return AVERROR_INVALIDDATA;
-
-    /* bit rate */
-    avctx->bit_rate = avctx->sample_rate * avctx->channels * BLOCK_SIZE * 8 / BLOCK_SAMPLES;
-
-    /* LPC coefficients */
-    if (coeff) {
-        cutoff = AV_RB16(buf + 16);
-        ff_adx_calculate_coeffs(cutoff, avctx->sample_rate, COEFF_BITS, coeff);
-    }
-
-    *header_size = offset;
-    return 0;
-}