move dnxhd demuxer to its own file

Originally committed as revision 24982 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 54 insertions, 0 deletions

diff --git a/libavformat/dnxhddec.c b/libavformat/dnxhddec.c
new file mode 100644
index 0000000000..26e39699c6
--- /dev/null
+++ b/libavformat/dnxhddec.c
@@ -0,0 +1,54 @@
+/*
+ * RAW DNxHD (SMPTE VC-3) demuxer
+ * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@gmail.com>
+ * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
+ *
+ * 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/intreadwrite.h"
+#include "avformat.h"
+#include "raw.h"
+
+static int dnxhd_probe(AVProbeData *p)
+{
+    static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};
+    int w, h, compression_id;
+    if (p->buf_size < 0x2c)
+        return 0;
+    if (memcmp(p->buf, header, 5))
+        return 0;
+    h = AV_RB16(p->buf + 0x18);
+    w = AV_RB16(p->buf + 0x1a);
+    if (!w || !h)
+        return 0;
+    compression_id = AV_RB32(p->buf + 0x28);
+    if (compression_id < 1237 || compression_id > 1253)
+        return 0;
+    return AVPROBE_SCORE_MAX;
+}
+
+AVInputFormat dnxhd_demuxer = {
+    "dnxhd",
+    NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
+    0,
+    dnxhd_probe,
+    ff_raw_video_read_header,
+    ff_raw_read_partial_packet,
+    .flags= AVFMT_GENERIC_INDEX,
+    .value = CODEC_ID_DNXHD,
+};