Support D-Cinema audio demuxing.

Originally committed as revision 4549 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 63 insertions, 0 deletions

diff --git a/libavformat/daud.c b/libavformat/daud.c
new file mode 100644
index 0000000000..acaec9b0d8
--- /dev/null
+++ b/libavformat/daud.c
@@ -0,0 +1,63 @@
+/*
+ * D-Cinema audio decoder.
+ * Copyright (c) 2005 Reimar Döffinger.
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+static int daud_header(AVFormatContext *s, AVFormatParameters *ap) {
+    AVStream *st = av_new_stream(s, 0);
+    st->codec->codec_type = CODEC_TYPE_AUDIO;
+    st->codec->codec_id = CODEC_ID_PCM_S24DAUD;
+    st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd');
+    st->codec->channels = 6;
+    st->codec->sample_rate = 96000;
+    st->codec->bit_rate = 3 * 6 * 96000 * 8;
+    st->codec->block_align = 3 * 6;
+    st->codec->bits_per_sample = 24;
+    return 0;
+}
+
+static int daud_packet(AVFormatContext *s, AVPacket *pkt) {
+    ByteIOContext *pb = &s->pb;
+    int ret, size;
+    if (url_feof(pb))
+        return AVERROR_IO;
+    size = get_be16(pb);
+    get_be16(pb); // unknown
+    ret = av_get_packet(pb, pkt, size);
+    pkt->stream_index = 0;
+    return ret;
+}
+
+static AVInputFormat daud_iformat = {
+    "daud",
+    "D-Cinema audio format",
+    0,
+    NULL,
+    daud_header,
+    daud_packet,
+    NULL,
+    NULL,
+    .extensions = "302",
+};
+
+int daud_init(void)
+{
+    av_register_input_format(&daud_iformat);
+    return 0;
+}
+