1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
#include "avcodec.h"
#define FFMPEG_VERSION "0.4.5"
#include "avio.h"
/* packet functions */
typedef struct AVPacket {
INT64 pts;
UINT8 *data;
int size;
int stream_index;
int flags;
#define PKT_FLAG_KEY 0x0001
} AVPacket;
int av_new_packet(AVPacket *pkt, int size);
void av_free_packet(AVPacket *pkt);
/*************************************************/
/* output formats */
struct AVFormatContext;
struct AVFormatInputContext;
typedef struct AVFormatParameters {
int frame_rate;
int sample_rate;
int channels;
int width;
int height;
int pix_fmt;
} AVFormatParameters;
typedef struct AVFormat {
const char *name;
const char *long_name;
const char *mime_type;
const char *extensions; /* comma separated extensions */
/* 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 *,
int stream_index,
unsigned char *buf, int size);
int (*write_trailer)(struct AVFormatContext *);
/* optional input support */
/* read the format header and initialize the AVFormatInputContext
structure. Return 0 if OK. 'ap' if non NULL contains
additionnal paramters. Only used in raw format right now */
int (*read_header)(struct AVFormatContext *,
AVFormatParameters *ap);
/* read one packet and put it in 'pkt'. pts and flags are also set */
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 at or before a given pts (given in microsecond). The pts
origin is defined by the stream */
int (*read_seek)(struct AVFormatContext *, INT64 pts);
int flags;
#define AVFMT_NOFILE 0x0001 /* no file should be opened */
struct AVFormat *next;
} AVFormat;
typedef struct AVStream {
int id; /* internal stream id */
AVCodecContext codec; /* codec context */
void *priv_data;
} AVStream;
#define MAX_STREAMS 20
/* format I/O context */
typedef struct AVFormatContext {
struct AVFormat *format;
void *priv_data;
ByteIOContext pb;
int nb_streams;
AVStream *streams[MAX_STREAMS];
char filename[1024]; /* input or output filename */
/* stream info */
char title[512];
char author[512];
char copyright[512];
char comment[512];
/* 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;
} AVFormatContext;
typedef struct AVPacketList {
AVPacket pkt;
struct AVPacketList *next;
} AVPacketList;
extern AVFormat *first_format;
/* rv10enc.c */
extern AVFormat rm_format;
/* mpegmux.c */
extern AVFormat mpeg_mux_format;
/* asfenc.c */
extern AVFormat asf_format;
/* avienc.c */
extern AVFormat avi_format;
/* jpegenc.c */
extern AVFormat mpjpeg_format;
extern AVFormat jpeg_format;
/* swfenc.c */
extern AVFormat swf_format;
/* wav.c */
extern AVFormat wav_format;
/* img.c */
extern AVFormat pgm_format;
extern AVFormat pgmyuv_format;
extern AVFormat imgyuv_format;
extern AVFormat pgmpipe_format;
/* raw.c */
extern AVFormat mp2_format;
extern AVFormat ac3_format;
extern AVFormat h263_format;
extern AVFormat mpeg1video_format;
extern AVFormat pcm_format;
extern AVFormat rawvideo_format;
/* ffm.c */
extern AVFormat ffm_format;
/* formats.c */
#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
void register_avformat(AVFormat *format);
AVFormat *guess_format(const char *short_name, const char *filename, const char *mime_type);
int strstart(const char *str, const char *val, const char **ptr);
void nstrcpy(char *buf, int buf_size, const char *str);
int match_ext(const char *filename, const char *extensions);
void register_all(void);
INT64 gettime(void);
typedef struct FifoBuffer {
UINT8 *buffer;
UINT8 *rptr, *wptr, *end;
} FifoBuffer;
int fifo_init(FifoBuffer *f, int size);
void fifo_free(FifoBuffer *f);
int fifo_size(FifoBuffer *f, UINT8 *rptr);
int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr);
void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr);
AVFormatContext *av_open_input_file(const char *filename, int buf_size);
int av_read_packet(AVFormatContext *s, AVPacket *pkt);
void av_close_input_file(AVFormatContext *s);
int av_write_packet(AVFormatContext *s, AVPacket *pkt);
void dump_format(AVFormatContext *ic,
int index,
const char *url,
int is_output);
int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
INT64 gettime(void);
INT64 parse_date(const char *datestr, int duration);
/* ffm specific for ffserver */
#define FFM_PACKET_SIZE 4096
offset_t ffm_read_write_index(int fd);
void ffm_write_write_index(int fd, offset_t pos);
void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
|
