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00022 #ifndef AVFORMAT_NUT_H
00023 #define AVFORMAT_NUT_H
00024
00025
00026
00027
00028 #include "avformat.h"
00029 #include "riff.h"
00030
00031 #define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48))
00032 #define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48))
00033 #define SYNCPOINT_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48))
00034 #define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48))
00035 #define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48))
00036
00037 #define ID_STRING "nut/multimedia container\0"
00038
00039 #define MAX_DISTANCE (1024*32-1)
00040
00041 typedef enum{
00042 FLAG_KEY = 1,
00043 FLAG_EOR = 2,
00044 FLAG_CODED_PTS = 8,
00045 FLAG_STREAM_ID = 16,
00046 FLAG_SIZE_MSB = 32,
00047 FLAG_CHECKSUM = 64,
00048 FLAG_RESERVED = 128,
00049 FLAG_HEADER_IDX =1024,
00050 FLAG_MATCH_TIME =2048,
00051 FLAG_CODED =4096,
00052 FLAG_INVALID =8192,
00053 } Flag;
00054
00055 typedef struct {
00056 uint64_t pos;
00057 uint64_t back_ptr;
00058
00059 int64_t ts;
00060 } Syncpoint;
00061
00062 typedef struct {
00063 uint16_t flags;
00064 uint8_t stream_id;
00065 uint16_t size_mul;
00066 uint16_t size_lsb;
00067 int16_t pts_delta;
00068 uint8_t reserved_count;
00069 uint8_t header_idx;
00070 } FrameCode;
00071
00072 typedef struct {
00073 int last_flags;
00074 int skip_until_key_frame;
00075 int64_t last_pts;
00076 int time_base_id;
00077 AVRational *time_base;
00078 int msb_pts_shift;
00079 int max_pts_distance;
00080 int decode_delay;
00081 } StreamContext;
00082
00083 typedef struct {
00084 AVFormatContext *avf;
00085
00086
00087 FrameCode frame_code[256];
00088 uint8_t header_len[128];
00089 const uint8_t *header[128];
00090 uint64_t next_startcode;
00091 StreamContext *stream;
00092 unsigned int max_distance;
00093 unsigned int time_base_count;
00094 int64_t last_syncpoint_pos;
00095 int header_count;
00096 AVRational *time_base;
00097 struct AVTreeNode *syncpoints;
00098 } NUTContext;
00099
00100 extern const AVCodecTag ff_nut_subtitle_tags[];
00101
00102 typedef struct {
00103 char str[9];
00104 int flag;
00105 } Dispositions;
00106
00107 void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val);
00108 int64_t ff_lsb2full(StreamContext *stream, int64_t lsb);
00109 int ff_nut_sp_pos_cmp(Syncpoint *a, Syncpoint *b);
00110 int ff_nut_sp_pts_cmp(Syncpoint *a, Syncpoint *b);
00111 void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts);
00112
00113 extern const Dispositions ff_nut_dispositions[];
00114
00115 #endif