1 #include "libmpeg3.h"
2 #include "mpeg3protos.h"
3
4 #define TOCVERSION 3
5 #define TOCVIDEO 4
6
mpeg3_generate_toc(FILE * output,char * path,int timecode_search,int print_streams)7 int mpeg3_generate_toc(FILE *output, char *path, int timecode_search, int print_streams)
8 {
9 mpeg3_t *file = mpeg3_open(path);
10 mpeg3_demuxer_t *demuxer;
11 int i;
12
13 if(file)
14 {
15 demuxer = mpeg3_new_demuxer(file, 0, 0, -1);
16 if(file->is_ifo_file)
17 {
18 int i;
19 mpeg3io_open_file(file->fs);
20 mpeg3demux_read_ifo(file, demuxer, 1);
21 mpeg3io_close_file(file->fs);
22
23 for(i = 0; i < demuxer->total_titles; i++)
24 {
25 fprintf(output, "TOCVERSION %d\n", TOCVERSION);
26
27 if(file->is_program_stream)
28 fprintf(output, "PROGRAM_STREAM\n");
29 else
30 fprintf(output, "TRANSPORT_STREAM\n");
31
32 fprintf(output, "PATH: %s\n"
33 "SIZE: %ld\n"
34 "PACKETSIZE: %ld\n",
35 demuxer->titles[i]->fs->path,
36 demuxer->titles[i]->total_bytes,
37 file->packet_size);
38
39 /* Just print the first title's streams */
40 if(i == 0)
41 mpeg3demux_print_streams(demuxer, output);
42
43 mpeg3demux_print_timecodes(demuxer->titles[i], output);
44 }
45
46 return 0;
47 }
48 else
49 {
50 char complete_path[MPEG3_STRLEN];
51 mpeg3io_complete_path(complete_path, path);
52
53 fprintf(output, "TOCVERSION %d\n"
54 "PATH: %s\n", TOCVERSION, complete_path);
55 if(file->is_program_stream)
56 fprintf(output, "PROGRAM_STREAM\n");
57 else
58 fprintf(output, "TRANSPORT_STREAM\n");
59
60 mpeg3demux_create_title(demuxer, timecode_search, output);
61 /* Just print the first title's streams */
62 if(print_streams) mpeg3demux_print_streams(demuxer, output);
63
64 if(file->is_transport_stream || file->is_program_stream)
65 {
66 fprintf(output, "SIZE: %ld\n", demuxer->titles[demuxer->current_title]->total_bytes);
67 fprintf(output, "PACKETSIZE: %ld\n", file->packet_size);
68 }
69
70 mpeg3demux_print_timecodes(demuxer->titles[demuxer->current_title], output);
71 return 0;
72 }
73
74 mpeg3_delete_demuxer(demuxer);
75 mpeg3_close(file);
76 }
77 return 1;
78 }
79
80 /* Read the title information from a toc */
read_titles(mpeg3_demuxer_t * demuxer,int version)81 static int read_titles(mpeg3_demuxer_t *demuxer, int version)
82 {
83 char string1[MPEG3_STRLEN], string2[MPEG3_STRLEN];
84 long start_byte, end_byte;
85 double start_time, end_time;
86 float program;
87 mpeg3_title_t *title = 0;
88 mpeg3_t *file = demuxer->file;
89
90 // Eventually use IFO file to generate titles
91 while(!feof(file->fs->fd))
92 {
93 char string[1024];
94 int i = 0, byte;
95
96 // Scanf is broken for single word lines
97 do{
98 byte = fgetc(file->fs->fd);
99 if(byte != 0 &&
100 byte != 0xd &&
101 byte != 0xa) string[i++] = byte;
102 }while(byte != 0xd &&
103 byte != 0xa &&
104 !feof(file->fs->fd) &&
105 i < 1023);
106 string[i] = 0;
107
108 if(strlen(string))
109 {
110 sscanf(string, "%s %s %ld %lf %lf %f",
111 string1,
112 string2,
113 &end_byte,
114 &start_time,
115 &end_time,
116 &program);
117
118 //printf("read_titles 2 %d %s %s %ld %f %f %f\n", strlen(string), string1, string2, end_byte, start_time, end_time, program);
119 if(!strncasecmp(string1, "PATH:", 5))
120 {
121 //printf("read_titles 2\n");
122 title = demuxer->titles[demuxer->total_titles++] = mpeg3_new_title(file, string2);
123 }
124 else
125 if(!strcasecmp(string1, "PROGRAM_STREAM"))
126 {
127 //printf("read_titles 3\n");
128 file->is_program_stream = 1;
129 }
130 else
131 if(!strcasecmp(string1, "TRANSPORT_STREAM"))
132 {
133 //printf("read_titles 4\n");
134 file->is_transport_stream = 1;
135 }
136 else
137 if(title)
138 {
139 mpeg3demux_cell_t *timecode;
140 start_byte = atol(string2);
141 //printf("read_titles 5\n");
142 if(!strcasecmp(string1, "REGION:"))
143 {
144 timecode = mpeg3_append_timecode(demuxer,
145 title,
146 0,
147 0,
148 0,
149 0,
150 1,
151 0);
152
153
154 //printf("mpeg3toc2 3\n");
155 timecode->start_byte = start_byte;
156 //printf("mpeg3toc2 4\n");
157 timecode->end_byte = end_byte;
158 timecode->start_time = start_time;
159 timecode->end_time = end_time;
160 timecode->program = program;
161 /*
162 * printf("read_title %p end: %f start: %f\n",
163 * timecode,
164 * timecode->end_time,
165 * timecode->start_time);
166 */
167 }
168 else
169 if(!strcasecmp(string1, "ASTREAM:"))
170 demuxer->astream_table[start_byte] = end_byte;
171 else
172 if(!strcasecmp(string1, "VSTREAM:"))
173 demuxer->vstream_table[start_byte] = end_byte;
174 else
175 if(!strcasecmp(string1, "SIZE:"))
176 title->total_bytes = start_byte;
177 else
178 if(!strcasecmp(string1, "PACKETSIZE:"))
179 file->packet_size = start_byte;
180 //printf("read_titles 3\n");
181 }
182 }
183 }
184
185 mpeg3demux_assign_programs(demuxer);
186 mpeg3demux_open_title(demuxer, 0);
187 return 0;
188 }
189
mpeg3_read_toc(mpeg3_t * file)190 int mpeg3_read_toc(mpeg3_t *file)
191 {
192 char string[MPEG3_STRLEN];
193 int version;
194
195 /* Test version number */
196 mpeg3io_seek(file->fs, 0);
197 fscanf(file->fs->fd, "%s %d", string, &version);
198 if(version != TOCVERSION && version != TOCVIDEO) return 1;
199 switch(version)
200 {
201 case TOCVIDEO:
202 file->is_video_stream = 1;
203 break;
204 }
205
206 /* Read titles */
207 read_titles(file->demuxer, version);
208 return 0;
209 }
210