1 files changed, 79 insertions, 0 deletions
diff --git a/libavformat/afc.c b/libavformat/afc.c
new file mode 100644
index 0000000000..8dbd232fc1
--- /dev/null
+++ b/libavformat/afc.c
@@ -0,0 +1,79 @@
+/*
+ * AFC demuxer
+ * Copyright (c) 2012 Paul B Mahol
+ *
+ * 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 "avformat.h"
+#include "internal.h"
+
+typedef struct AFCDemuxContext {
+    int64_t    data_end;
+} AFCDemuxContext;
+
+static int afc_read_header(AVFormatContext *s)
+{
+    AFCDemuxContext *c = s->priv_data;
+    AVStream *st;
+
+    st = avformat_new_stream(s, NULL);
+    if (!st)
+        return AVERROR(ENOMEM);
+    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+    st->codec->codec_id   = AV_CODEC_ID_ADPCM_AFC;
+    st->codec->channels   = 2;
+    st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
+
+    if (ff_alloc_extradata(st->codec, 1))
+        return AVERROR(ENOMEM);
+    st->codec->extradata[0] = 8 * st->codec->channels;
+
+    c->data_end = avio_rb32(s->pb) + 32LL;
+    st->duration = avio_rb32(s->pb);
+    st->codec->sample_rate = avio_rb16(s->pb);
+    avio_skip(s->pb, 22);
+    avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+
+    return 0;
+}
+
+static int afc_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    AFCDemuxContext *c = s->priv_data;
+    int64_t size;
+    int ret;
+
+    size = FFMIN(c->data_end - avio_tell(s->pb), 18 * 128);
+    if (size <= 0)
+        return AVERROR_EOF;
+
+    ret = av_get_packet(s->pb, pkt, size);
+    pkt->stream_index = 0;
+    return ret;
+}
+
+AVInputFormat ff_afc_demuxer = {
+    .name           = "afc",
+    .long_name      = NULL_IF_CONFIG_SMALL("AFC"),
+    .priv_data_size = sizeof(AFCDemuxContext),
+    .read_header    = afc_read_header,
+    .read_packet    = afc_read_packet,
+    .extensions     = "afc",
+    .flags          = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK,
+};