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authorMichael Niedermayer <michaelni@gmx.at>2008-06-26 11:25:42 +0000
committerMichael Niedermayer <michaelni@gmx.at>2008-06-26 11:25:42 +0000
commit0c587a4ea8256f12735f5234e783be02532696bb (patch)
treea469d849960b9b51f1d25483a42b328f97a800af /libavcodec/vp3_parser.c
parentfb9464e807190bcc15abafbc85ee684f053f9875 (diff)
downloadffmpeg-0c587a4ea8256f12735f5234e783be02532696bb.tar.gz
VP3 & Theora parser to extract keyframe flags.
This parser is not able to split random bitstream pieces. Originally committed as revision 13986 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vp3_parser.c')
-rw-r--r--libavcodec/vp3_parser.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/libavcodec/vp3_parser.c b/libavcodec/vp3_parser.c
new file mode 100644
index 0000000000..818b460ffc
--- /dev/null
+++ b/libavcodec/vp3_parser.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 Michael Niedermayer
+ *
+ * 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 "parser.h"
+
+static int parse(AVCodecParserContext *s,
+ AVCodecContext *avctx,
+ const uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size)
+{
+ if(avctx->codec_id == CODEC_ID_THEORA)
+ s->pict_type= (buf[0]&0x40) ? FF_P_TYPE : FF_I_TYPE;
+ else
+ s->pict_type= (buf[0]&0x80) ? FF_P_TYPE : FF_I_TYPE;
+
+ *poutbuf = buf;
+ *poutbuf_size = buf_size;
+ return buf_size;
+}
+
+AVCodecParser vp3_parser = {
+ { CODEC_ID_THEORA, CODEC_ID_VP3 },
+ 0,
+ NULL,
+ parse,
+};