VisClient/net/sf/ffmpeg_java/AVFormatLibrary.java

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package net.sf.ffmpeg_java;

import com.sun.jna.Callback;
import com.sun.jna.Native;
import com.sun.jna.NativeLong;
import com.sun.jna.Pointer;
import com.sun.jna.Structure;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.ptr.LongByReference;
import com.sun.jna.ptr.PointerByReference;

public interface AVFormatLibrary extends FFMPEGLibrary 
{

    public static final AVFormatLibrary INSTANCE = (AVFormatLibrary) Native.loadLibrary(
                System.getProperty("avformat.lib",
                        System.getProperty("os.name").startsWith("Windows") ? "avformat-52" : "avformat"), 
                AVFormatLibrary.class);

//------------------------------------------------------------------------------------------------------------------------
// avformat.h
    
/*    public static final int LIBAVFORMAT_VERSION_INT = ((52<<16)+(31<<8)+1);
    public static final String LIBAVFORMAT_VERSION     = "52.31.1";
    public static final int LIBAVFORMAT_BUILD       = LIBAVFORMAT_VERSION_INT;

    public static final String LIBAVFORMAT_IDENT       = "Lavf" + LIBAVFORMAT_VERSION;
*/    
    
        //      typedef struct AVPacket {
        //    int64_t pts;                            ///< presentation time stamp in time_base units
        //    int64_t dts;                            ///< decompression time stamp in time_base units
        //    uint8_t *data;
        //    int   size;
        //    int   stream_index;
        //    int   flags;
        //    int   duration;                         ///< presentation duration in time_base units (0 if not available)
        //    void  (*destruct)(struct AVPacket *);
        //    void  *priv;
        //    int64_t pos;                            ///< byte position in stream, -1 if unknown
        //} AVPacket;
        
    interface Destruct extends Callback 
    {
        void callback(AVPacket pkt);
    }

        public static class AVPacket extends Structure
        {
                public long pts;                           
                public long dts;                           
                public Pointer data;
                public int   size;
                public int   stream_index;
                public int   flags;
                public int   duration;                        
                public Destruct destruct;
                public Pointer priv;
                public long pos;   
                public long convergence_duration;
        
                public AVPacket(){};
                public AVPacket(Pointer p){
                        useMemory(p);
                        read();
                }
        }
        
        public static final int PKT_FLAG_KEY   = 0x0001;
        
        void av_destruct_packet_nofree(AVPacket pkt);
        void av_destruct_packet(AVPacket pkt);
        void av_init_packet(AVPacket pkt);
        int av_new_packet(AVPacket pkt, int size);
        int av_get_packet(ByteIOContext s, AVPacket pkt, int size);
        int av_dup_packet(AVPacket pkt);

        
//      /**
//       * Free a packet
//       *
//       * @param pkt packet to free
//       */
//      static inline void av_free_packet(AVPacket *pkt)
//      {
//          if (pkt && pkt->destruct) {
//              pkt->destruct(pkt);
//          }
//      }
        void av_free_packet(AVPacket pkt);      // TODO: this won't work with JNA, since it is inlined.
        
        //      typedef struct AVFrac {
        //    int64_t val, num, den;
        //} AVFrac attribute_deprecated;
        
        public static class AVFrac extends Structure
        {
            public long val;
            public long num;
            public long den;
        }
        
//      /** this structure contains the data a format has to probe a file */
//      typedef struct AVProbeData {
//          const char *filename;
//          unsigned char *buf;
//          int buf_size;
//      } AVProbeData;
//
//      #define AVPROBE_SCORE_MAX 100               ///< max score, half of that is used for file extension based detection
//      #define AVPROBE_PADDING_SIZE 32             ///< extra allocated bytes at the end of the probe buffer

        public static class AVProbeData extends Structure
        {
            public Pointer filename;
            public Pointer buf;
            public int buf_size;
        }

        public static final int AVPROBE_SCORE_MAX =100;               
        public static final int AVPROBE_PADDING_SIZE =32;             

        public static class AVFormatParameters extends Structure
        {
            public AVRational time_base;
            public int sample_rate;
            public int channels;
            public int width;
            public int height;
            public int pix_fmt;
            public int channel; 
        //#if LIBAVFORMAT_VERSION_INT < (52<<16)
            //public Pointer device; /**< video, audio or DV device */
        //#endif
            public Pointer standard; 
                public int bitFields;   // bit fields not supported by JNA
//          int mpeg2ts_raw:1;  /**< force raw MPEG2 transport stream output, if possible */
//          int mpeg2ts_compute_pcr:1; /**< compute exact PCR for each transport
//                                        stream packet (only meaningful if
//                                        mpeg2ts_raw is TRUE) */
//          int initial_pause:1;       /**< do not begin to play the stream
//                                        immediately (RTSP only) */
//          int prealloced_context:1;
            public int video_codec_id;
            public int audio_codec_id;
        }
        
        public static final int AVFMT_NOFILE        =0x0001;
        public static final int AVFMT_NEEDNUMBER    =0x0002; 
        public static final int AVFMT_SHOW_IDS      =0x0008; 
        public static final int AVFMT_RAWPICTURE    =0x0020; 
        public static final int AVFMT_GLOBALHEADER  =0x0040; 
        public static final int AVFMT_NOTIMESTAMPS  =0x0080; 
        public static final int AVFMT_GENERIC_INDEX =0x0100; 
//      typedef struct AVOutputFormat {
//          const char *name;
//          const char *long_name;
//          const char *mime_type;
//          const char *extensions; /**< comma separated filename extensions */
//          /** size of private data so that it can be allocated in the wrapper */
//          int priv_data_size;
//          /* output support */
//          enum CodecID audio_codec; /**< default audio codec */
//          enum CodecID video_codec; /**< default video codec */
//          int (*write_header)(struct AVFormatContext *);
//          int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
//          int (*write_trailer)(struct AVFormatContext *);
//          /** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
//          int flags;
//          /** currently only used to set pixel format if not YUV420P */
//          int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
//          int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
//
//          /**
//           * list of supported codec_id-codec_tag pairs, ordered by "better choice first"
//           * the arrays are all CODEC_ID_NONE terminated
//           */
//          const struct AVCodecTag **codec_tag;
//
//          enum CodecID subtitle_codec; /**< default subtitle codec */
//
//          /* private fields */
//          struct AVOutputFormat *next;
//      } AVOutputFormat;
        
        public static class AVOutputFormat extends Structure
        {
            public String name;
            public String long_name;
            public String mime_type;
            public String extensions; 
            public int priv_data_size;
            public int audio_codec; 
            public int video_codec; 
            public Pointer write_header;
            public Pointer write_packet;
            public Pointer write_trailer;
            public int flags;
            public Pointer set_parameters;
            public Pointer interleave_packet;
            public Pointer codec_tag;
            public int subtitle_codec; 
            public Pointer next;

            public AVOutputFormat() {
                super();
            }
            
            public AVOutputFormat(Pointer p)
                {       super();
                        useMemory(p);
                        read();
                }
        }
        
//      typedef struct AVInputFormat {
//          const char *name;
//          const char *long_name;
//          /** size of private data so that it can be allocated in the wrapper */
//          int priv_data_size;
//          /**
//           * tell if a given file has a chance of being parsed by this format.
//           * The buffer provided is guranteed to be AVPROBE_PADDING_SIZE bytes big
//           * so you dont have to check for that unless you need more.
//           */
//          int (*read_probe)(AVProbeData *);
//          /** read the format header and initialize the AVFormatContext
//             structure. Return 0 if OK. 'ap' if non NULL contains
//             additional paramters. Only used in raw format right
//             now. 'av_new_stream' should be called to create new streams.  */
//          int (*read_header)(struct AVFormatContext *,
//                             AVFormatParameters *ap);
//          /** read one packet and put it in 'pkt'. pts and flags are also
//             set. 'av_new_stream' can be called only if the flag
//             AVFMTCTX_NOHEADER is used. */
//          int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
//          /** close the stream. The AVFormatContext and AVStreams are not
//             freed by this function */
//          int (*read_close)(struct AVFormatContext *);
//          /**
//           * seek to a given timestamp relative to the frames in
//           * stream component stream_index
//           * @param stream_index must not be -1
//           * @param flags selects which direction should be preferred if no exact
//           *              match is available
//           * @return >= 0 on success (but not necessarily the new offset)
//           */
//          int (*read_seek)(struct AVFormatContext *,
//                           int stream_index, int64_t timestamp, int flags);
//          /**
//           * gets the next timestamp in AV_TIME_BASE units.
//           */
//          int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
//                                    int64_t *pos, int64_t pos_limit);
//          /** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
//          int flags;
//          /** if extensions are defined, then no probe is done. You should
//             usually not use extension format guessing because it is not
//             reliable enough */
//          const char *extensions;
//          /** general purpose read only value that the format can use */
//          int value;
//
//          /** start/resume playing - only meaningful if using a network based format
//             (RTSP) */
//          int (*read_play)(struct AVFormatContext *);
//
//          /** pause playing - only meaningful if using a network based format
//             (RTSP) */
//          int (*read_pause)(struct AVFormatContext *);
//
//          const struct AVCodecTag **codec_tag;
//
//          /* private fields */
//          struct AVInputFormat *next;
//      } AVInputFormat;
        
        public static class AVInputFormat extends Structure
        {
            public String name;
            public String long_name;
            public int priv_data_size;
            public Pointer read_probe;
            public Pointer read_header;
            public Pointer read_packet;
            public Pointer read_close;
            public Pointer read_seek;
            public Pointer read_timestamp;
            public int flags;
            public String extensions;
            public int value;
            public Pointer read_play;
            public Pointer read_pause;
            public Pointer codec_tag;
            public Pointer next;

            public AVInputFormat() {
                super();
            }
            
            public AVInputFormat(Pointer p)
                {       super();
                        useMemory(p);
                        read();
                }
        }
        
        //enum AVStreamParseType:
    public static final int AVSTREAM_PARSE_NONE = 0;
    public static final int AVSTREAM_PARSE_FULL = 1;       
    public static final int AVSTREAM_PARSE_HEADERS = 2;    
    public static final int AVSTREAM_PARSE_TIMESTAMPS = 3; 
//    typedef struct AVIndexEntry {
//        int64_t pos;
//        int64_t timestamp;
//    #define AVINDEX_KEYFRAME 0x0001
//        int flags:2;
//        int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
//        int min_distance;         /**< min distance between this and the previous keyframe, used to avoid unneeded searching */
//    } AVIndexEntry;
    
   public static class AVIndexEntry extends Structure
        {
        public long pos;
        public long timestamp;
                public static final int AVINDEX_KEYFRAME = 0x0001;
        public int bit_fields; // JNA does not support bit fields
//        int flags:2;
//        int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
        public int min_distance;         
    }
        
//      typedef struct AVStream {
//   int index;    /**< stream index in AVFormatContext */
//   int id;       /**< format specific stream id */
//   AVCodecContext *codec; /**< codec context */
//   /**
//    * real base frame rate of the stream.
//    * this is the lowest framerate with which all timestamps can be
//    * represented accurately (it is the least common multiple of all
//    * framerates in the stream), Note, this value is just a guess!
//    * for example if the timebase is 1/90000 and all frames have either
//    * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
//    */
//   AVRational r_frame_rate;
//   void *priv_data;
//
//   /* internal data used in av_find_stream_info() */
//   int64_t first_dts;
//#if LIBAVFORMAT_VERSION_INT < (52<<16)
//   int codec_info_nb_frames;
//#endif
//   /** encoding: PTS generation when outputing stream */
//   struct AVFrac pts;
//
//   /**
//    * this is the fundamental unit of time (in seconds) in terms
//    * of which frame timestamps are represented. for fixed-fps content,
//    * timebase should be 1/framerate and timestamp increments should be
//    * identically 1.
//    */
//   AVRational time_base;
//   int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
//   /* ffmpeg.c private use */
//   int stream_copy; /**< if set, just copy stream */
//   enum AVDiscard discard; ///< selects which packets can be discarded at will and do not need to be demuxed
//   //FIXME move stuff to a flags field?
//   /** quality, as it has been removed from AVCodecContext and put in AVVideoFrame
//    * MN: dunno if that is the right place for it */
//   float quality;
//   /** decoding: pts of the first frame of the stream, in stream time base. */
//   int64_t start_time;
//   /** decoding: duration of the stream, in stream time base. */
//   int64_t duration;
//
//   char language[4]; /** ISO 639 3-letter language code (empty string if undefined) */
//
//   /* av_read_frame() support */
//   enum AVStreamParseType need_parsing;
//   struct AVCodecParserContext *parser;
//
//   int64_t cur_dts;
//   int last_IP_duration;
//   int64_t last_IP_pts;
//   /* av_seek_frame() support */
//   AVIndexEntry *index_entries; /**< only used if the format does not
//                                   support seeking natively */
//   int nb_index_entries;
//   unsigned int index_entries_allocated_size;
//
//   int64_t nb_frames;                 ///< number of frames in this stream if known or 0
//
//#define MAX_REORDER_DELAY 4
//   int64_t pts_buffer[MAX_REORDER_DELAY+1];
//} AVStream;

        public static class AVStream extends Structure
        {
           public int index;   
           public int id;      
           public Pointer codec; 
           public AVRational r_frame_rate;
           public Pointer priv_data;
           public long first_dts;
        //#if LIBAVFORMAT_VERSION_INT < (52<<16)
           //public int codec_info_nb_frames;
        //#endif
           public AVFrac pts;
           public AVRational time_base;
           public int pts_wrap_bits; 
           public int stream_copy; 
           public int discard; 
           public float quality;
           public long start_time;
           public long duration;
           public byte[] language = new byte[4]; 
           public int need_parsing;
           public Pointer parser;
           public long cur_dts;
           public int last_IP_duration;
           public long last_IP_pts;
           public Pointer index_entries; 
           public int nb_index_entries;
           public int index_entries_allocated_size;
           public long nb_frames;              
           public static final int MAX_REORDER_DELAY = 4;
           public long[] pts_buffer = new long[MAX_REORDER_DELAY+1];
           
                public AVStream()
                {
                        super();
                }
                
                public AVStream(Pointer p)
                {       super();
                        useMemory(p);
                        read();
                }
                public AVStream(AVStream s) {
                        this(s.getPointer());
                }
                
        }
        
        public static final int AVFMTCTX_NOHEADER      = 0x0001; 
        public static final int MAX_STREAMS = 20;
        
//      /* format I/O context */
//      typedef struct AVFormatContext {
//          const AVClass *av_class; /**< set by av_alloc_format_context */
//          /* can only be iformat or oformat, not both at the same time */
//          struct AVInputFormat *iformat;
//          struct AVOutputFormat *oformat;
//          void *priv_data;
//          ByteIOContext pb;
//          unsigned int nb_streams;
//          AVStream *streams[MAX_STREAMS];
//          char filename[1024]; /**< input or output filename */
//          /* stream info */
//          int64_t timestamp;
//          char title[512];
//          char author[512];
//          char copyright[512];
//          char comment[512];
//          char album[512];
//          int year;  /**< ID3 year, 0 if none */
//          int track; /**< track number, 0 if none */
//          char genre[32]; /**< ID3 genre */
//
//          int ctx_flags; /**< format specific flags, see AVFMTCTX_xx */
//          /* private data for pts handling (do not modify directly) */
//          /** This buffer is only needed when packets were already buffered but
//             not decoded, for example to get the codec parameters in mpeg
//             streams */
//          struct AVPacketList *packet_buffer;
//
//          /** decoding: position of the first frame of the component, in
//             AV_TIME_BASE fractional seconds. NEVER set this value directly:
//             it is deduced from the AVStream values.  */
//          int64_t start_time;
//          /** decoding: duration of the stream, in AV_TIME_BASE fractional
//             seconds. NEVER set this value directly: it is deduced from the
//             AVStream values.  */
//          int64_t duration;
//          /** decoding: total file size. 0 if unknown */
//          int64_t file_size;
//          /** decoding: total stream bitrate in bit/s, 0 if not
//             available. Never set it directly if the file_size and the
//             duration are known as ffmpeg can compute it automatically. */
//          int bit_rate;
//
//          /* av_read_frame() support */
//          AVStream *cur_st;
//          const uint8_t *cur_ptr;
//          int cur_len;
//          AVPacket cur_pkt;
//
//          /* av_seek_frame() support */
//          int64_t data_offset; /** offset of the first packet */
//          int index_built;
//
//          int mux_rate;
//          int packet_size;
//          int preload;
//          int max_delay;
//
//      #define AVFMT_NOOUTPUTLOOP -1
//      #define AVFMT_INFINITEOUTPUTLOOP 0
//          /** number of times to loop output in formats that support it */
//          int loop_output;
//
//          int flags;
//      #define AVFMT_FLAG_GENPTS       0x0001 ///< generate pts if missing even if it requires parsing future frames
//      #define AVFMT_FLAG_IGNIDX       0x0002 ///< ignore index
//      #define AVFMT_FLAG_NONBLOCK     0x0004 ///< do not block when reading packets from input
//
//          int loop_input;
//          /** decoding: size of data to probe; encoding unused */
//          unsigned int probesize;
//
//          /**
//           * maximum duration in AV_TIME_BASE units over which the input should be analyzed in av_find_stream_info()
//           */
//          int max_analyze_duration;
//
//          const uint8_t *key;
//          int keylen;
//      } AVFormatContext;
        
        public static class AVFormatContext extends Structure
        {
                public Pointer av_class;
                public Pointer iformat;
                public Pointer oformat;
                public Pointer priv_data;
                public Pointer pb;
                public int nb_streams;
                public static final int MAX_STREAMS = 20;
                // don't know how to do an array of pointers with JNA, so we'll just do 20 pointers:
                public Pointer streams0;
                public Pointer streams1;
                public Pointer streams2;
                public Pointer streams3;
                public Pointer streams4;
                public Pointer streams5;
                public Pointer streams6;
                public Pointer streams7;
                public Pointer streams8;
                public Pointer streams9;
                public Pointer streams10;
                public Pointer streams11;
                public Pointer streams12;
                public Pointer streams13;
                public Pointer streams14;
                public Pointer streams15;
                public Pointer streams16;
                public Pointer streams17;
                public Pointer streams18;
                public Pointer streams19;
                public Pointer [] getStreams()
                {       return new Pointer [] {
                                streams0,
                                streams1,
                                streams2,
                                streams3,
                                streams4,
                                streams5,
                                streams6,
                                streams7,
                                streams8,
                                streams9,
                                streams10,
                                streams11,
                                streams12,
                                streams13,
                                streams14,
                                streams15,
                                streams16,
                                streams17,
                                streams18,
                                streams19
                        };
                }               //public Pointer[] streams = new Pointer[MAX_STREAMS]; //           AVStream *streams[MAX_STREAMS];
                //public Pointer[] streams = new Pointer[MAX_STREAMS]; //           AVStream *streams[MAX_STREAMS];
                public byte[] filename = new byte[1024]; 
                public long timestamp;
                public byte[] title = new byte[512];
                public byte[] author = new byte[512];
                public byte[] copyright = new byte[512];
                public byte[] comment = new byte[512];
                public byte[] album = new byte[512];
                public int year;  
                public int track; 
                public byte[] genre = new byte[32]; 
                public int ctx_flags; 
                public Pointer packet_buffer;
                public long start_time;
                public long duration;
                public long file_size;
                public int bit_rate;
                public Pointer cur_st;
                public Pointer cur_ptr;
                public int cur_len;
                public AVPacket cur_pkt;
                public long data_offset;
                public int index_built;
                public int mux_rate;
                public int packet_size;
                public int preload;
                public int max_delay;
                        public static final int AVFMT_NOOUTPUTLOOP = -1;
                        public static final int AVFMT_INFINITEOUTPUTLOOP = 0;
                public int loop_output;
                public int flags;
                        public static final int AVFMT_FLAG_GENPTS       =0x0001; 
                        public static final int AVFMT_FLAG_IGNIDX       =0x0002; 
                        public static final int AVFMT_FLAG_NONBLOCK     =0x0004; 
                public int loop_input;
                public int probesize;
                public int max_analyze_duration;
                public Pointer key;
                public int keylen;
                
                public AVFormatContext()
                {
                        super();
                }
                
                public AVFormatContext(Pointer p)
                {       super();
                        useMemory(p);
                        read();
                }
        }
        
//      typedef struct AVPacketList {
//          AVPacket pkt;
//          struct AVPacketList *next;
//      } AVPacketList;
        
        public static class AVPacketList extends Structure
        {
            public AVPacket pkt;
            public Pointer next;
        }
        
//      extern AVInputFormat *first_iformat;
//      extern AVOutputFormat *first_oformat;
        
        // TODO: JNA does not support global variable access
        
        //enum CodecID av_guess_image2_codec(const char *filename);
        int av_guess_image2_codec(String filename);
        
        
        void av_register_input_format(AVInputFormat format);
        void av_register_output_format(AVOutputFormat format);
        AVOutputFormat guess_stream_format(String short_name,
                                            String filename, String mime_type);
        AVOutputFormat guess_format(String short_name,
                                     String filename, String mime_type);
        
        
        int av_guess_codec(AVOutputFormat fmt, String short_name,
            String filename, String mime_type, int type);

        void av_hex_dump(Pointer f, Pointer buf, int size);
        void av_hex_dump_log(Pointer avcl, int level, Pointer buf, int size);
        void av_pkt_dump(Pointer f, AVPacket pkt, int dump_payload);
        
        void av_pkt_dump_log(Pointer avcl, int level, AVPacket pkt, int dump_payload);
        

        void av_register_all();
        
        int av_codec_get_id(PointerByReference tags, int tag);
        int av_codec_get_tag(PointerByReference tags, int id);
        
        AVInputFormat av_find_input_format(String short_name);

        AVInputFormat av_probe_input_format(AVProbeData pd, int is_opened);

        int av_open_input_stream(PointerByReference ic_ptr,
                        ByteIOContext pb, String filename,
                        AVInputFormat fmt, AVFormatParameters ap);
        int av_open_input_file(PointerByReference ic_ptr, String filename,
                        AVInputFormat fmt,
                int buf_size,
                AVFormatParameters ap);

        AVFormatContext av_alloc_format_context();
        int av_find_stream_info(AVFormatContext ic);
        int av_read_packet(AVFormatContext s, AVPacket pkt);
        int av_read_frame(AVFormatContext s, AVPacket pkt);
        int av_seek_frame(AVFormatContext s, int stream_index, long timestamp, int flags);
        int av_read_play(AVFormatContext s);
        int av_read_pause(AVFormatContext s);
        void av_close_input_file(AVFormatContext s);
        AVStream av_new_stream(AVFormatContext s, int id);
        void av_set_pts_info(AVStream s, int pts_wrap_bits,
                             int pts_num, int pts_den);

        
        public static final int AVSEEK_FLAG_BACKWARD =1; 
        public static final int AVSEEK_FLAG_BYTE     =2; 
        public static final int AVSEEK_FLAG_ANY      =4; 
        
        
        int av_find_default_stream_index(AVFormatContext s);
        int av_index_search_timestamp(AVStream st, long timestamp, int flags);
        int av_add_index_entry(AVStream st,
                               long pos, long timestamp, int size, int distance, int flags);
        int av_seek_frame_binary(AVFormatContext s, int stream_index, long target_ts, int flags);
        void av_update_cur_dts(AVFormatContext s, AVStream ref_st, long timestamp);
        long av_gen_search(AVFormatContext s, int stream_index, long target_ts, long pos_min, long pos_max, long pos_limit, long ts_min, long ts_max, int flags, LongByReference ts_ret, Pointer read_timestamp);
        int av_set_parameters(AVFormatContext s, AVFormatParameters ap);
        int av_write_header(AVFormatContext s);
        int av_write_frame(AVFormatContext s, AVPacket pkt);
        int av_interleaved_write_frame(AVFormatContext s, AVPacket pkt);
        int av_interleave_packet_per_dts(AVFormatContext s, AVPacket out, AVPacket pkt, int flush);
        int av_write_trailer(AVFormatContext s);
        void dump_format(AVFormatContext ic,
                         int index,
                         String url,
                         int is_output);
        int parse_image_size(IntByReference width_ptr, IntByReference height_ptr, String str);
        int parse_frame_rate(IntByReference frame_rate, IntByReference frame_rate_base, String arg);
        long parse_date(String datestr, int duration);
        long av_gettime();
        public static final int FFM_PACKET_SIZE = 4096;
        long ffm_read_write_index(int fd);
        void ffm_write_write_index(int fd, long pos);
        void ffm_set_write_index(AVFormatContext s, long pos, long file_size);
        int find_info_tag(Pointer arg, int arg_size, String tag1, String info);
        int av_get_frame_filename(Pointer buf, int buf_size,
                                  String path, int number);
        int av_filename_number_test(String filename);
        int avf_sdp_create(Pointer ac, int n_files, Pointer buff, int size);

//      #ifdef HAVE_AV_CONFIG_H

//      #include "os_support.h"
//
//      void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
//
//      #ifdef __GNUC__
//      #define dynarray_add(tab, nb_ptr, elem)\
//      do {\
//          typeof(tab) _tab = (tab);\
//          typeof(elem) _elem = (elem);\
//          (void)sizeof(**_tab == _elem); /* check that types are compatible */\
//          __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
//      } while(0)
//      #else
//      #define dynarray_add(tab, nb_ptr, elem)\
//      do {\
//          __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
//      } while(0)
//      #endif

        // TODO: __dynarray_add and dynarray_add with JNA
        
//      time_t mktimegm(struct tm *tm);
//      struct tm *brktimegm(time_t secs, struct tm *tm);
        // TODO: mktimegm with JNA
        // TODO: brktimegm with JNA
        
        String small_strptime(String p, String fmt,
                                   Pointer dt);

        int resolve_host(Pointer sin_addr, String hostname);

        void url_split(Pointer proto, int proto_size,
                       Pointer authorization, int authorization_size,
                       Pointer hostname, int hostname_size,
                       IntByReference port_ptr,
                       Pointer path, int path_size,
                       String url);

        int match_ext(String filename, String extensions);
        
        
// end avformat.h
//------------------------------------------------------------------------------------------------------------------------

//------------------------------------------------------------------------------------------------------------------------
// avio.h


//      struct URLContext {
//          struct URLProtocol *prot;
//          int flags;
//          int is_streamed;  /**< true if streamed (no seek possible), default = false */
//          int max_packet_size;  /**< if non zero, the stream is packetized with this max packet size */
//          void *priv_data;
//      #if LIBAVFORMAT_VERSION_INT >= (52<<16)
//          char *filename; /**< specified filename */
//      #else
//          char filename[1]; /**< specified filename */
//      #endif
//      };
        
        public static class URLContext extends Structure
        {
            public Pointer prot;
            public int flags;
            public int is_streamed;  
            public int max_packet_size;  
            public Pointer priv_data;
        //#if LIBAVFORMAT_VERSION_INT >= (52<<16)
            public Pointer filename; 
        //#else
            //public byte filename; /**< specified filename */
        //#endif
            // TODO: not sure how this should be mapped for JNA.  This is most likely a variable length structure with the filename following the structure.
        }
        
//      typedef struct URLPollEntry {
//          URLContext *handle;
//          int events;
//          int revents;
//      } URLPollEntry;
        
        public static class URLPollEntry extends Structure
        {
            public Pointer handle;
            public int events;
            public int revents;
        } 

        public static final int URL_RDONLY =0;
        public static final int URL_WRONLY =1;
        public static final int URL_RDWR   =2;

        //typedef int URLInterruptCB(void);

        int url_open(PointerByReference h, String filename, int flags);
        int url_read(URLContext h, Pointer buf, int size);
        int url_write(URLContext h, Pointer buf, int size);
        long url_seek(URLContext h, long pos, int whence);
        int url_close(URLContext h);
        int url_exist(String filename);
        long url_filesize(URLContext h);

        int url_get_max_packet_size(URLContext h);
        void url_get_filename(URLContext h, Pointer buf, int buf_size);
        void url_set_interrupt_cb(Pointer/*URLInterruptCB*/ interrupt_cb);
        int url_poll(URLPollEntry poll_table, int n, int timeout);
        public static final int AVSEEK_SIZE = 0x10000;

//      typedef struct URLProtocol {
//          const char *name;
//          int (*url_open)(URLContext *h, const char *filename, int flags);
//          int (*url_read)(URLContext *h, unsigned char *buf, int size);
//          int (*url_write)(URLContext *h, unsigned char *buf, int size);
//          offset_t (*url_seek)(URLContext *h, offset_t pos, int whence);
//          int (*url_close)(URLContext *h);
//          struct URLProtocol *next;
//      } URLProtocol;

        
//      extern URLProtocol *first_protocol;
//      extern URLInterruptCB *url_interrupt_cb;
        // TODO: JNA does not allow access to global variables

        //int register_protocol(URLProtocol protocol);

        
        
//      typedef struct {
//          unsigned char *buffer;
//          int buffer_size;
//          unsigned char *buf_ptr, *buf_end;
//          void *opaque;
//          int (*read_packet)(void *opaque, uint8_t *buf, int buf_size);
//          int (*write_packet)(void *opaque, uint8_t *buf, int buf_size);
//          offset_t (*seek)(void *opaque, offset_t offset, int whence);
//          offset_t pos; /**< position in the file of the current buffer */
//          int must_flush; /**< true if the next seek should flush */
//          int eof_reached; /**< true if eof reached */
//          int write_flag;  /**< true if open for writing */
//          int is_streamed;
//          int max_packet_size;
//          unsigned long checksum;
//          unsigned char *checksum_ptr;
//          unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size);
//          int error;         ///< contains the error code or 0 if no error happened
//      } ByteIOContext;

        public static class ByteIOContext extends Structure
        {
                public Pointer buffer;
                public int buffer_size;
                public Pointer buf_ptr;
                public Pointer buf_end;
                public Pointer opaque;
                public Pointer read_packet;
                public Pointer write_packet;
                public Pointer seek;
                public long pos; 
                public int must_flush; 
                public int eof_reached; 
                public int write_flag; 
                public int is_streamed;
                public int max_packet_size;
                public NativeLong checksum;     
                public Pointer checksum_ptr;
                public Pointer update_checksum;
                public int error;
                public Pointer read_pause;
                public Pointer read_seek;
        }

        int init_put_byte(Pointer s,
            Pointer buffer,
            int buffer_size,
            int write_flag,
            Pointer opaque,
            Pointer read_packet,
            Pointer write_packet,
            Pointer seek);

        void put_byte(ByteIOContext s, int b);
        void put_buffer(ByteIOContext s, Pointer buf, int size);
        void put_le64(ByteIOContext s, long val);
        void put_be64(ByteIOContext s, long val);
        void put_le32(ByteIOContext s, int val);
        void put_be32(ByteIOContext s, int val);
        void put_le24(ByteIOContext s, int val);
        void put_be24(ByteIOContext s, int val);
        void put_le16(ByteIOContext s, int val);
        void put_be16(ByteIOContext s, int val);
        void put_tag(ByteIOContext s, String tag);
        
        void put_strz(ByteIOContext s, String buf);
        
        long url_fseek(ByteIOContext s, long offset, int whence);
        void url_fskip(ByteIOContext s, long offset);
        long url_ftell(ByteIOContext s);
        long url_fsize(ByteIOContext s);
        int url_feof(ByteIOContext s);
        int url_ferror(ByteIOContext s);
        
        public static final int URL_EOF = -1;
        int url_fgetc(ByteIOContext s);
        
//      /** @warning currently size is limited */
//      #ifdef __GNUC__
//      int url_fprintf(ByteIOContext s, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
//      #else
//      int url_fprintf(ByteIOContext s, const char *fmt, ...);
//      #endif
// TODO: don't know how to map url_fprintf with JNA, given variable parameters.
        
        Pointer url_fgets(ByteIOContext s, Pointer buf, int buf_size);
        
        void put_flush_packet(ByteIOContext s);
        
        int get_buffer(ByteIOContext s, Pointer buf, int size);
        int get_partial_buffer(ByteIOContext s, Pointer buf, int size);
        
        int get_byte(ByteIOContext s);
        int get_le24(ByteIOContext s);
        int get_le32(ByteIOContext s);
        long get_le64(ByteIOContext s);
        int get_le16(ByteIOContext s);
        
        Pointer get_strz(ByteIOContext s, Pointer buf, int maxlen);
        int get_be16(ByteIOContext s);
        int get_be24(ByteIOContext s);
        int get_be32(ByteIOContext s);
        long get_be64(ByteIOContext s);
        
//      static inline int url_is_streamed(ByteIOContext s)
//      {
//      return s->is_streamed;
//      }
        // TODO: cannot call inlined functions with JNA.
        
        int url_fdopen(ByteIOContext s, Pointer h);
        
        int url_setbufsize(ByteIOContext s, int buf_size);
        
        int url_fopen(ByteIOContext s, String filename, int flags);
        int url_fclose(ByteIOContext s);
        URLContext url_fileno(ByteIOContext s);
        
        int url_fget_max_packet_size(Pointer s);
        
        int url_open_buf(ByteIOContext s, Pointer buf, int buf_size, int flags);
        
        int url_close_buf(ByteIOContext s);
        
        int url_open_dyn_buf(ByteIOContext s);
        
        int url_open_dyn_packet_buf(ByteIOContext s, int max_packet_size);
        
        int url_close_dyn_buf(ByteIOContext s, PointerByReference pbuffer);
        
        NativeLong get_checksum(ByteIOContext s);
        void init_checksum(ByteIOContext s, Pointer update_checksum, NativeLong checksum);
        
        /* file.c */
//      extern URLProtocol file_protocol;
//      extern URLProtocol pipe_protocol;
//      
//      /* udp.c */
//      extern URLProtocol udp_protocol;
        // TODO: JNA does not allow access to global variables
        
        int udp_set_remote_url(URLContext h, String uri);
        int udp_get_local_port(URLContext h);
        int udp_get_file_handle(URLContext h);
        
//      /* tcp.c  */
//      extern URLProtocol tcp_protocol;
//      
//      /* http.c */
//      extern URLProtocol http_protocol;
        // TODO: JNA does not allow access to global variables
        
// end avio.h
//------------------------------------------------------------------------------------------------------------------------

        
}

---