move dump_extradata bitstream filter in its own file

Originally committed as revision 9066 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 50 insertions, 0 deletions

diff --git a/libavcodec/dump_extradata_bsf.c b/libavcodec/dump_extradata_bsf.c
new file mode 100644
index 0000000000..db263490a3
--- /dev/null
+++ b/libavcodec/dump_extradata_bsf.c
@@ -0,0 +1,50 @@
+/*
+ * 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 dump_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;
+    /* cast to avoid warning about discarding qualifiers */
+    if(avctx->extradata){
+        if(  (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a')
+           ||(keyframe && (cmd=='k' || !cmd))
+           ||(cmd=='e')
+            /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
+            int size= buf_size + avctx->extradata_size;
+            *poutbuf_size= size;
+            *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
+
+            memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
+            memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+            return 1;
+        }
+    }
+    return 0;
+}
+
+AVBitStreamFilter dump_extradata_bsf={
+    "dump_extra",
+    0,
+    dump_extradata,
+};