move remove_extradata bitstream filter in its own file

Originally committed as revision 9065 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 55 insertions, 0 deletions

diff --git a/libavcodec/remove_extradata_bsf.c b/libavcodec/remove_extradata_bsf.c
new file mode 100644
index 0000000000..95bd98bef2
--- /dev/null
+++ b/libavcodec/remove_extradata_bsf.c
@@ -0,0 +1,55 @@
+/*
+ * copyright (c) 2006 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 "avcodec.h"
+
+
+static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
+                     uint8_t **poutbuf, int *poutbuf_size,
+                     const uint8_t *buf, int buf_size, int keyframe){
+    int cmd= args ? *args : 0;
+    AVCodecParserContext *s;
+
+    if(!bsfc->parser){
+        bsfc->parser= av_parser_init(avctx->codec_id);
+    }
+    s= bsfc->parser;
+
+    if(s && s->parser->split){
+        if(  (((avctx->flags & CODEC_FLAG_GLOBAL_HEADER) || (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER)) && cmd=='a')
+           ||(!keyframe && cmd=='k')
+           ||(cmd=='e' || !cmd)
+          ){
+            int i= s->parser->split(avctx, buf, buf_size);
+            buf += i;
+            buf_size -= i;
+        }
+    }
+    *poutbuf= (uint8_t *) buf;
+    *poutbuf_size= buf_size;
+
+    return 0;
+}
+
+AVBitStreamFilter remove_extradata_bsf={
+    "remove_extra",
+    0,
+    remove_extradata,
+};