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authorTim Redfern <tim@eclectronics.org>2013-09-05 17:55:35 +0100
committerTim Redfern <tim@eclectronics.org>2013-09-05 17:55:35 +0100
commit741fb4b9e135cfb161a749db88713229038577bb (patch)
tree08bc9925659cbcac45162bacf31dc6336d4f60b4 /ffmpeg1/libavformat/aea.c
parenta2e1bf3495b7bfefdaedb8fc737e969ab06df079 (diff)
making act segmenter
Diffstat (limited to 'ffmpeg1/libavformat/aea.c')
-rw-r--r--ffmpeg1/libavformat/aea.c105
1 files changed, 0 insertions, 105 deletions
diff --git a/ffmpeg1/libavformat/aea.c b/ffmpeg1/libavformat/aea.c
deleted file mode 100644
index 15b9b1c..0000000
--- a/ffmpeg1/libavformat/aea.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * MD STUDIO audio demuxer
- *
- * Copyright (c) 2009 Benjamin Larsson
- *
- * 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 "libavutil/channel_layout.h"
-#include "libavutil/intreadwrite.h"
-#include "avformat.h"
-#include "pcm.h"
-
-#define AT1_SU_SIZE 212
-
-static int aea_read_probe(AVProbeData *p)
-{
- if (p->buf_size <= 2048+212)
- return 0;
-
- /* Magic is '00 08 00 00' in Little Endian*/
- if (AV_RL32(p->buf)==0x800) {
- int bsm_s, bsm_e, inb_s, inb_e, ch;
- ch = p->buf[264];
- bsm_s = p->buf[2048];
- inb_s = p->buf[2048+1];
- inb_e = p->buf[2048+210];
- bsm_e = p->buf[2048+211];
-
- if (ch != 1 && ch != 2)
- return 0;
-
- /* Check so that the redundant bsm bytes and info bytes are valid
- * the block size mode bytes have to be the same
- * the info bytes have to be the same
- */
- if (bsm_s == bsm_e && inb_s == inb_e)
- return AVPROBE_SCORE_MAX / 4 + 1;
- }
- return 0;
-}
-
-static int aea_read_header(AVFormatContext *s)
-{
- AVStream *st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
-
- /* Parse the amount of channels and skip to pos 2048(0x800) */
- avio_skip(s->pb, 264);
- st->codec->channels = avio_r8(s->pb);
- avio_skip(s->pb, 1783);
-
-
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = AV_CODEC_ID_ATRAC1;
- st->codec->sample_rate = 44100;
- st->codec->bit_rate = 292000;
-
- if (st->codec->channels != 1 && st->codec->channels != 2) {
- av_log(s,AV_LOG_ERROR,"Channels %d not supported!\n",st->codec->channels);
- return -1;
- }
-
- st->codec->channel_layout = (st->codec->channels == 1) ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
-
- st->codec->block_align = AT1_SU_SIZE * st->codec->channels;
- return 0;
-}
-
-static int aea_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- int ret = av_get_packet(s->pb, pkt, s->streams[0]->codec->block_align);
-
- pkt->stream_index = 0;
- if (ret <= 0)
- return AVERROR(EIO);
-
- return ret;
-}
-
-AVInputFormat ff_aea_demuxer = {
- .name = "aea",
- .long_name = NULL_IF_CONFIG_SMALL("MD STUDIO audio"),
- .read_probe = aea_read_probe,
- .read_header = aea_read_header,
- .read_packet = aea_read_packet,
- .read_seek = ff_pcm_read_seek,
- .flags = AVFMT_GENERIC_INDEX,
- .extensions = "aea",
-};