From 741fb4b9e135cfb161a749db88713229038577bb Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 5 Sep 2013 17:55:35 +0100
Subject: making act segmenter

---
 ffmpeg1/libavcodec/mpegaudiodecheader.c | 146 --------------------------------
 1 file changed, 146 deletions(-)
 delete mode 100644 ffmpeg1/libavcodec/mpegaudiodecheader.c

(limited to 'ffmpeg1/libavcodec/mpegaudiodecheader.c')

diff --git a/ffmpeg1/libavcodec/mpegaudiodecheader.c b/ffmpeg1/libavcodec/mpegaudiodecheader.c
deleted file mode 100644
index 7841b30..0000000
--- a/ffmpeg1/libavcodec/mpegaudiodecheader.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * MPEG Audio header decoder
- * Copyright (c) 2001, 2002 Fabrice Bellard
- *
- * 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
- */
-
-/**
- * @file
- * MPEG Audio header decoder.
- */
-
-//#define DEBUG
-#include "avcodec.h"
-#include "mpegaudio.h"
-#include "mpegaudiodata.h"
-#include "mpegaudiodecheader.h"
-
-
-int avpriv_mpegaudio_decode_header(MPADecodeHeader *s, uint32_t header)
-{
-    int sample_rate, frame_size, mpeg25, padding;
-    int sample_rate_index, bitrate_index;
-    if (header & (1<<20)) {
-        s->lsf = (header & (1<<19)) ? 0 : 1;
-        mpeg25 = 0;
-    } else {
-        s->lsf = 1;
-        mpeg25 = 1;
-    }
-
-    s->layer = 4 - ((header >> 17) & 3);
-    /* extract frequency */
-    sample_rate_index = (header >> 10) & 3;
-    sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (s->lsf + mpeg25);
-    sample_rate_index += 3 * (s->lsf + mpeg25);
-    s->sample_rate_index = sample_rate_index;
-    s->error_protection = ((header >> 16) & 1) ^ 1;
-    s->sample_rate = sample_rate;
-
-    bitrate_index = (header >> 12) & 0xf;
-    padding = (header >> 9) & 1;
-    //extension = (header >> 8) & 1;
-    s->mode = (header >> 6) & 3;
-    s->mode_ext = (header >> 4) & 3;
-    //copyright = (header >> 3) & 1;
-    //original = (header >> 2) & 1;
-    //emphasis = header & 3;
-
-    if (s->mode == MPA_MONO)
-        s->nb_channels = 1;
-    else
-        s->nb_channels = 2;
-
-    if (bitrate_index != 0) {
-        frame_size = avpriv_mpa_bitrate_tab[s->lsf][s->layer - 1][bitrate_index];
-        s->bit_rate = frame_size * 1000;
-        switch(s->layer) {
-        case 1:
-            frame_size = (frame_size * 12000) / sample_rate;
-            frame_size = (frame_size + padding) * 4;
-            break;
-        case 2:
-            frame_size = (frame_size * 144000) / sample_rate;
-            frame_size += padding;
-            break;
-        default:
-        case 3:
-            frame_size = (frame_size * 144000) / (sample_rate << s->lsf);
-            frame_size += padding;
-            break;
-        }
-        s->frame_size = frame_size;
-    } else {
-        /* if no frame size computed, signal it */
-        return 1;
-    }
-
-#if defined(DEBUG)
-    av_dlog(NULL, "layer%d, %d Hz, %d kbits/s, ",
-           s->layer, s->sample_rate, s->bit_rate);
-    if (s->nb_channels == 2) {
-        if (s->layer == 3) {
-            if (s->mode_ext & MODE_EXT_MS_STEREO)
-                av_dlog(NULL, "ms-");
-            if (s->mode_ext & MODE_EXT_I_STEREO)
-                av_dlog(NULL, "i-");
-        }
-        av_dlog(NULL, "stereo");
-    } else {
-        av_dlog(NULL, "mono");
-    }
-    av_dlog(NULL, "\n");
-#endif
-    return 0;
-}
-
-int avpriv_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bit_rate)
-{
-    MPADecodeHeader s1, *s = &s1;
-
-    if (ff_mpa_check_header(head) != 0)
-        return -1;
-
-    if (avpriv_mpegaudio_decode_header(s, head) != 0) {
-        return -1;
-    }
-
-    switch(s->layer) {
-    case 1:
-        avctx->codec_id = AV_CODEC_ID_MP1;
-        *frame_size = 384;
-        break;
-    case 2:
-        avctx->codec_id = AV_CODEC_ID_MP2;
-        *frame_size = 1152;
-        break;
-    default:
-    case 3:
-        avctx->codec_id = AV_CODEC_ID_MP3;
-        if (s->lsf)
-            *frame_size = 576;
-        else
-            *frame_size = 1152;
-        break;
-    }
-
-    *sample_rate = s->sample_rate;
-    *channels = s->nb_channels;
-    *bit_rate = s->bit_rate;
-    return s->frame_size;
-}
-- 
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