1 files changed, 94 insertions, 0 deletions
diff --git a/libavformat/nut.h b/libavformat/nut.h
new file mode 100644
index 0000000000..af42a57720
--- /dev/null
+++ b/libavformat/nut.h
@@ -0,0 +1,94 @@
+/*
+ * "NUT" Container Format (de)muxer
+ * Copyright (c) 2006 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 <limits.h>
+#include "avformat.h"
+#include "crc.h"
+//#include "mpegaudio.h"
+#include "riff.h"
+//#include "adler32.h"
+
+#define      MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48))
+#define    STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48))
+#define SYNCPOINT_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48))
+#define     INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48))
+#define      INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48))
+
+#define ID_STRING "nut/multimedia container\0"
+
+#define MAX_DISTANCE (1024*32-1)
+
+typedef enum{
+    FLAG_KEY        =   1, ///<if set, frame is keyframe
+    FLAG_EOR        =   2, ///<if set, stream has no relevance on presentation. (EOR)
+    FLAG_CODED_PTS  =   8, ///<if set, coded_pts is in the frame header
+    FLAG_STREAM_ID  =  16, ///<if set, stream_id is coded in the frame header
+    FLAG_SIZE_MSB   =  32, ///<if set, data_size_msb is at frame header, otherwise data_size_msb is 0
+    FLAG_CHECKSUM   =  64, ///<if set then the frame header contains a checksum
+    FLAG_RESERVED   = 128, ///<if set, reserved_count is coded in the frame header
+    FLAG_CODED      =4096, ///<if set, coded_flags are stored in the frame header.
+    FLAG_INVALID    =8192, ///<if set, frame_code is invalid.
+}flag_t;
+
+typedef struct {
+    uint32_t pos; //64gb limit if div16 (change this to 64 if thats too little)
+    uint64_t global_key_pts;
+    uint32_t back_ptr_div16; //is stored /16
+} syncpoint_t;
+
+typedef struct {
+    uint16_t flags;
+    uint8_t  stream_id;
+    uint16_t size_mul;
+    uint16_t size_lsb;
+    int16_t  pts_delta;
+    uint8_t  reserved_count;
+} FrameCode; // maybe s/FrameCode/framecode_t/ or change all to java style but dont mix
+
+typedef struct {
+    int last_key_frame;  ///<was the last frame a keyfraeme
+    int64_t last_pts;
+    int time_base_id;
+    AVRational time_base;
+    int msb_pts_shift;
+    int max_pts_distance;
+    int decode_delay; //FIXME duplicate of has_b_frames
+} StreamContext;// maybe s/StreamContext/streamcontext_t/
+
+typedef struct {
+    AVFormatContext *avf;
+//    int written_packet_size;
+//    int64_t packet_start[3]; //0-> startcode less, 1-> short startcode 2-> long startcodes
+    FrameCode frame_code[256];
+    uint64_t next_startcode;     ///< stores the next startcode if it has alraedy been parsed but the stream isnt seekable
+    StreamContext *stream;
+    unsigned int max_distance;
+    unsigned int time_base_count;
+    int64_t last_syncpoint_pos;
+    AVRational *time_base;
+} NUTContext;
+
+
+//FIXME move to a common spot, like crc.c/h
+static unsigned long av_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len){
+    return av_crc(av_crc04C11DB7, checksum, buf, len);
+}