ffmpeg-2.1.1: move directory

git-svn-id: svn://kolibrios.org@6148 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-02-05 22:14:10 +00:00
parent a4b787f4b8
commit ecf3e862ea
4011 changed files with 1868 additions and 4 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/h264dec.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/h264dec.c
@@ -0,0 +1,78 @@
+/*
+ * RAW H.264 video demuxer
+ * Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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 h264_probe(AVProbeData *p)
+{
+    uint32_t code = -1;
+    int sps = 0, pps = 0, idr = 0, res = 0, sli = 0;
+    int i;
+
+    for (i = 0; i < p->buf_size; i++) {
+        code = (code << 8) + p->buf[i];
+        if ((code & 0xffffff00) == 0x100) {
+            int ref_idc = (code >> 5) & 3;
+            int type    = code & 0x1F;
+            static const int8_t ref_zero[] = {
+                 2,  0,  0,  0,  0, -1,  1, -1,
+                -1,  1,  1,  1,  1, -1,  2,  2,
+                 2,  2,  2,  0,  2,  2,  2,  2,
+                 2,  2,  2,  2,  2,  2,  2,  2
+            };
+
+            if (code & 0x80) // forbidden_bit
+                return 0;
+
+            if (ref_zero[type] == 1 && ref_idc)
+                return 0;
+            if (ref_zero[type] == -1 && !ref_idc)
+                return 0;
+            if (ref_zero[type] == 2)
+                res++;
+
+            switch (type) {
+            case 1:
+                sli++;
+                break;
+            case 5:
+                idr++;
+                break;
+            case 7:
+                if (p->buf[i + 2] & 0x03)
+                    return 0;
+                sps++;
+                break;
+            case 8:
+                pps++;
+                break;
+            }
+        }
+    }
+
+    if (sps && pps && (idr || sli > 3) && res < (sps + pps + idr))
+        return AVPROBE_SCORE_EXTENSION + 1;  // 1 more than .mpg
+
+    return 0;
+}
+
+FF_DEF_RAWVIDEO_DEMUXER(h264, "raw H.264 video", h264_probe, "h26l,h264,264,avc", AV_CODEC_ID_H264)