add MicroDVD muxer and demuxer

Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/libavformat/microdvdenc.c b/libavformat/microdvdenc.c
new file mode 100644
index 0000000000..b2abc547e6
--- /dev/null
+++ b/libavformat/microdvdenc.c
@@ -0,0 +1,51 @@
+/*
+ * MicroDVD subtitle muxer
+ * Copyright (c) 2010  Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * 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 "avformat.h"
+#include "rawenc.h"
+
+static int microdvd_write_header(struct AVFormatContext *s)
+{
+    AVCodecContext *avctx = s->streams[0]->codec;
+
+    if (s->nb_streams != 1 || avctx->codec_id != CODEC_ID_MICRODVD) {
+        av_log(s, AV_LOG_ERROR, "Exactly one MicroDVD stream is needed.\n");
+        return -1;
+    }
+
+    if (avctx->extradata && avctx->extradata_size > 0) {
+        avio_write(s->pb, "{DEFAULT}{}", 11);
+        avio_write(s->pb, avctx->extradata, avctx->extradata_size);
+        avio_flush(s->pb);
+    }
+    return 0;
+}
+
+AVOutputFormat ff_microdvd_muxer = {
+    .name           = "microdvd",
+    .long_name      = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
+    .mime_type      = "text/x-microdvd",
+    .extensions     = "sub",
+    .write_header   = microdvd_write_header,
+    .write_packet   = ff_raw_write_packet,
+    .flags          = AVFMT_NOTIMESTAMPS,
+    .subtitle_codec = CODEC_ID_MICRODVD,
+};