split ffm de/muxer

Originally committed as revision 13413 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 60 insertions, 0 deletions

diff --git a/libavformat/ffm.h b/libavformat/ffm.h
new file mode 100644
index 0000000000..83cfdb600d
--- /dev/null
+++ b/libavformat/ffm.h
@@ -0,0 +1,60 @@
+/*
+ * FFM (ffserver live feed) common header
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * 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
+ */
+
+#ifndef FFMPEG_FFM_H
+#define FFMPEG_FFM_H
+
+#include "avformat.h"
+
+/* The FFM file is made of blocks of fixed size */
+#define FFM_HEADER_SIZE 14
+#define PACKET_ID       0x666d
+
+/* each packet contains frames (which can span several packets */
+#define FRAME_HEADER_SIZE    8
+#define FLAG_KEY_FRAME       0x01
+
+typedef struct FFMStream {
+    int64_t pts;
+} FFMStream;
+
+enum {
+    READ_HEADER,
+    READ_DATA,
+};
+
+typedef struct FFMContext {
+    /* only reading mode */
+    offset_t write_index, file_size;
+    int read_state;
+    uint8_t header[FRAME_HEADER_SIZE];
+
+    /* read and write */
+    int first_packet; /* true if first packet, needed to set the discontinuity tag */
+    int first_frame_in_packet; /* true if first frame in packet, needed to know if PTS information is valid */
+    int packet_size;
+    int frame_offset;
+    int64_t pts;
+    uint8_t *packet_ptr, *packet_end;
+    uint8_t packet[FFM_PACKET_SIZE];
+} FFMContext;
+
+#endif /* FFMPEG_FFM_H */