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authorDiego 'Flameeyes' Pettenò <flameeyes@gmail.com>2007-04-09 20:40:24 +0200
committerDiego 'Flameeyes' Pettenò <flameeyes@gmail.com>2007-04-09 20:40:24 +0200
commit1836b8ffe31f393d256c8021aaf7a2308561a0c2 (patch)
tree6a80efd3b4ed8a29d55a7b331a43ac7bd5ed4855 /contrib/ffmpeg/libavcodec/xiph.c
parenta89f36b0b3e9008cd7f8378e4fa40a3c37d7a23e (diff)
parent199dc87abe65001f7ef9ec56bca7c3d80af39bcf (diff)
downloadxine-lib-1836b8ffe31f393d256c8021aaf7a2308561a0c2.tar.gz
xine-lib-1836b8ffe31f393d256c8021aaf7a2308561a0c2.tar.bz2
Merge the FFmpeg integration branch into the nopadding branch.
Diffstat (limited to 'contrib/ffmpeg/libavcodec/xiph.c')
-rw-r--r--contrib/ffmpeg/libavcodec/xiph.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/xiph.c b/contrib/ffmpeg/libavcodec/xiph.c
new file mode 100644
index 000000000..65c9d5603
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/xiph.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2007 FFmpeg Project
+ *
+ * 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 "xiph.h"
+
+int ff_split_xiph_headers(uint8_t *extradata, int extradata_size,
+ int first_header_size, uint8_t *header_start[3],
+ int header_len[3])
+{
+ int i, j;
+
+ if (AV_RB16(extradata) == first_header_size) {
+ for (i=0; i<3; i++) {
+ header_len[i] = AV_RB16(extradata);
+ extradata += 2;
+ header_start[i] = extradata;
+ extradata += header_len[i];
+ }
+ } else if (extradata[0] == 2) {
+ for (i=0,j=1; i<2; i++,j++) {
+ header_len[i] = 0;
+ for (; j<extradata_size && extradata[j]==0xff; j++) {
+ header_len[i] += 0xff;
+ }
+ if (j >= extradata_size)
+ return -1;
+
+ header_len[i] += extradata[j];
+ }
+ header_len[2] = extradata_size - header_len[0] - header_len[1] - j;
+ extradata += j;
+ header_start[0] = extradata;
+ header_start[1] = header_start[0] + header_len[0];
+ header_start[2] = header_start[1] + header_len[1];
+ } else {
+ return -1;
+ }
+ return 0;
+}