avformat: H265 demuxer

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 60 insertions, 0 deletions

diff --git a/libavformat/h265dec.c b/libavformat/h265dec.c
new file mode 100644
index 0000000000..1eb8402d86
--- /dev/null
+++ b/libavformat/h265dec.c
@@ -0,0 +1,60 @@
+/*
+ * RAW H.265 video demuxer
+ * Copyright (c) 2013 Dirk Farin <dirk.farin@gmail.com>
+ *
+ * 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 "rawdec.h"
+
+static int h265_probe(AVProbeData *p)
+{
+    uint32_t code= -1;
+    int vps=0, sps=0, pps=0, idr=0;
+    int i;
+
+    for(i=0; i<p->buf_size-1; i++){
+        code = (code<<8) + p->buf[i];
+        if ((code & 0xffffff00) == 0x100) {
+          uint8_t nal2 = p->buf[i+1];
+          int type = (code & 0x7E)>>1;
+
+          if (code & 0x81) // forbidden and reserved zero bits
+            return 0;
+
+          if (nal2 & 0xf8) // reserved zero
+            return 0;
+
+          switch (type) {
+          case 32: vps++; break;
+          case 33: sps++; break;
+          case 34: pps++; break;
+          case 19:
+          case 20: idr++; break;
+          }
+        }
+    }
+
+    // printf("vps=%d, sps=%d, pps=%d, idr=%d\n", vps, sps, pps, idr);
+
+    if (vps && sps && pps && idr)
+        return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg
+    return 0;
+}
+
+FF_DEF_RAWVIDEO_DEMUXER(h265 , "raw H.265 video", h265_probe, "h265,265,hevc", AV_CODEC_ID_H265)