Mercurial > hg > index.fcgi > dvdnav-rip > dvdnav-rip-1pba
view menus.c @ 7:aa7d0e4f300e
display title position and length in number of blocks
| author | paulo |
|---|---|
| date | Wed, 02 May 2012 01:08:59 -0700 |
| parents | 3fd49361fcc8 |
| children | 12c17225098e |
line source
1 /*
2 * Copyright (C) 2003 by the libdvdnav project
3 *
4 * This file is part of libdvdnav, a DVD navigation library.
5 *
6 * libdvdnav is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * libdvdnav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19 *
20 * $Id: menus.c 1135 2008-09-06 21:55:51Z rathann $
21 *
22 */
24 #include <stdio.h>
25 #include <unistd.h>
26 #include <inttypes.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <fcntl.h>
30 #include "dvd_types.h"
31 #include <dvdread/dvd_reader.h>
32 #include <dvdread/nav_types.h>
33 #include <dvdread/ifo_types.h> /* For vm_cmd_t */
34 #include "dvdnav.h"
35 #include "dvdnav_events.h"
37 /* shall we use libdvdnav's read ahead cache? */
38 #define DVD_READ_CACHE 1
40 /* which is the default language for menus/audio/subpictures? */
41 #define DVD_LANGUAGE "en"
43 #ifdef WIN32
44 #define S_IRWXG 0
45 #endif
47 int main(int argc, char **argv) {
48 dvdnav_t *dvdnav;
49 uint8_t mem[DVD_VIDEO_LB_LEN];
50 int finished = 0;
51 int output_fd = 0;
52 int dump = 0, tt_dump = 0, tt_skip = 0;
54 /* open dvdnav handle */
55 printf("Opening DVD...\n");
56 if (dvdnav_open(&dvdnav, "/dev/dvd") != DVDNAV_STATUS_OK) {
57 printf("Error on dvdnav_open\n");
58 return 1;
59 }
61 /* set read ahead cache usage */
62 if (dvdnav_set_readahead_flag(dvdnav, DVD_READ_CACHE) != DVDNAV_STATUS_OK) {
63 printf("Error on dvdnav_set_readahead_flag: %s\n", dvdnav_err_to_string(dvdnav));
64 return 2;
65 }
67 /* set the language */
68 if (dvdnav_menu_language_select(dvdnav, DVD_LANGUAGE) != DVDNAV_STATUS_OK ||
69 dvdnav_audio_language_select(dvdnav, DVD_LANGUAGE) != DVDNAV_STATUS_OK ||
70 dvdnav_spu_language_select(dvdnav, DVD_LANGUAGE) != DVDNAV_STATUS_OK) {
71 printf("Error on setting languages: %s\n", dvdnav_err_to_string(dvdnav));
72 return 2;
73 }
75 /* set the PGC positioning flag to have position information relatively to the
76 * whole feature instead of just relatively to the current chapter */
77 if (dvdnav_set_PGC_positioning_flag(dvdnav, 1) != DVDNAV_STATUS_OK) {
78 printf("Error on dvdnav_set_PGC_positioning_flag: %s\n", dvdnav_err_to_string(dvdnav));
79 return 2;
80 }
82 /* start at title and part, if specified */
83 if (argc > 1) {
84 int start_title = atoi(argv[1]);
85 int start_part = 1;
86 if (argc > 2)
87 start_part = atoi(argv[2]);
88 dvdnav_part_play(dvdnav, start_title, start_part);
89 }
91 /* the read loop which regularly calls dvdnav_get_next_block
92 * and handles the returned events */
93 printf("Reading...\n");
94 while (!finished) {
95 int result, event, len;
96 uint8_t *buf = mem;
98 /* the main reading function */
99 #if DVD_READ_CACHE
100 result = dvdnav_get_next_cache_block(dvdnav, &buf, &event, &len);
101 #else
102 result = dvdnav_get_next_block(dvdnav, buf, &event, &len);
103 #endif
105 if (result == DVDNAV_STATUS_ERR) {
106 printf("Error getting next block: %s\n", dvdnav_err_to_string(dvdnav));
107 return 3;
108 }
110 switch (event) {
111 case DVDNAV_BLOCK_OK:
112 /* We have received a regular block of the currently playing MPEG stream.
113 * A real player application would now pass this block through demuxing
114 * and decoding. We simply write it to disc here. */
116 if (!output_fd && (dump || tt_dump)) {
117 printf("Opening output...\n");
118 output_fd = open("libdvdnav.mpg", O_CREAT | O_WRONLY | O_APPEND, S_IRWXU | S_IRWXG);
119 if (output_fd == -1) {
120 printf("Error opening output\n");
121 return 4;
122 }
123 }
125 if (dump || tt_dump)
126 write(output_fd, buf, len);
128 break;
129 case DVDNAV_NOP:
130 /* Nothing to do here. */
131 break;
132 case DVDNAV_STILL_FRAME:
133 /* We have reached a still frame. A real player application would wait
134 * the amount of time specified by the still's length while still handling
135 * user input to make menus and other interactive stills work.
136 * A length of 0xff means an indefinite still which has to be skipped
137 * indirectly by some user interaction. */
138 {
139 dvdnav_still_event_t *still_event = (dvdnav_still_event_t *)buf;
140 if (still_event->length < 0xff)
141 printf("Skipping %d seconds of still frame\n", still_event->length);
142 else
143 printf("Skipping indefinite length still frame\n");
144 dvdnav_still_skip(dvdnav);
145 }
146 break;
147 case DVDNAV_WAIT:
148 /* We have reached a point in DVD playback, where timing is critical.
149 * Player application with internal fifos can introduce state
150 * inconsistencies, because libdvdnav is always the fifo's length
151 * ahead in the stream compared to what the application sees.
152 * Such applications should wait until their fifos are empty
153 * when they receive this type of event. */
154 printf("Skipping wait condition\n");
155 dvdnav_wait_skip(dvdnav);
156 break;
157 case DVDNAV_SPU_CLUT_CHANGE:
158 /* Player applications should pass the new colour lookup table to their
159 * SPU decoder */
160 break;
161 case DVDNAV_SPU_STREAM_CHANGE:
162 /* Player applications should inform their SPU decoder to switch channels */
163 break;
164 case DVDNAV_AUDIO_STREAM_CHANGE:
165 /* Player applications should inform their audio decoder to switch channels */
166 break;
167 case DVDNAV_HIGHLIGHT:
168 /* Player applications should inform their overlay engine to highlight the
169 * given button */
170 {
171 dvdnav_highlight_event_t *highlight_event = (dvdnav_highlight_event_t *)buf;
172 printf("Selected button %d\n", highlight_event->buttonN);
173 }
174 break;
175 case DVDNAV_VTS_CHANGE:
176 /* Some status information like video aspect and video scale permissions do
177 * not change inside a VTS. Therefore this event can be used to query such
178 * information only when necessary and update the decoding/displaying
179 * accordingly. */
180 break;
181 case DVDNAV_CELL_CHANGE:
182 /* Some status information like the current Title and Part numbers do not
183 * change inside a cell. Therefore this event can be used to query such
184 * information only when necessary and update the decoding/displaying
185 * accordingly. */
186 {
187 int32_t tt = 0, ptt = 0;
188 uint32_t tpos, tlen;
189 char input = '\0';
191 dvdnav_current_title_info(dvdnav, &tt, &ptt);
192 dvdnav_get_position(dvdnav, &tpos, &tlen);
193 printf("Cell change: Title %d, Chapter %d\n", tt, ptt);
194 printf("At position %.0f%% inside the feature (%d / %d) \n", 100 * (double)tpos / (double)tlen, tpos, tlen);
196 dump = 0;
197 if (tt_dump && tt != tt_dump)
198 tt_dump = 0;
200 if (tt_skip && tt != tt_skip)
201 tt_skip = 0;
203 if (output_fd && !tt_dump) {
204 printf("Closing output...\n");
205 output_fd = close(output_fd);
206 }
208 if (!dump && !tt_dump && !tt_skip) {
209 fflush(stdin);
210 while ((input != 'a') && (input != 's') && (input != 'q') && (input != 't') && (input != 'l')) {
211 printf("(a)ppend cell to output\n(s)kip cell\nappend until end of (t)itle\nskip tit(l)e\n(q)uit\n");
212 scanf("%c", &input);
213 }
215 switch (input) {
216 case 'a':
217 dump = 1;
218 break;
219 case 't':
220 tt_dump = tt;
221 break;
222 case 'l':
223 tt_skip = tt;
224 break;
225 case 'q':
226 finished = 1;
227 }
228 }
229 }
230 break;
231 case DVDNAV_NAV_PACKET:
232 /* A NAV packet provides PTS discontinuity information, angle linking information and
233 * button definitions for DVD menus. Angles are handled completely inside libdvdnav.
234 * For the menus to work, the NAV packet information has to be passed to the overlay
235 * engine of the player so that it knows the dimensions of the button areas. */
236 {
237 pci_t *pci;
239 /* Applications with fifos should not use these functions to retrieve NAV packets,
240 * they should implement their own NAV handling, because the packet you get from these
241 * functions will already be ahead in the stream which can cause state inconsistencies.
242 * Applications with fifos should therefore pass the NAV packet through the fifo
243 * and decoding pipeline just like any other data. */
244 pci = dvdnav_get_current_nav_pci(dvdnav);
245 dvdnav_get_current_nav_dsi(dvdnav);
247 if(pci->hli.hl_gi.btn_ns > 0) {
248 int button;
250 printf("Found %i DVD menu buttons...\n", pci->hli.hl_gi.btn_ns);
252 for (button = 0; button < pci->hli.hl_gi.btn_ns; button++) {
253 btni_t *btni = &(pci->hli.btnit[button]);
254 printf("Button %i top-left @ (%i,%i), bottom-right @ (%i,%i)\n",
255 button + 1, btni->x_start, btni->y_start,
256 btni->x_end, btni->y_end);
257 }
259 button = 0;
260 while ((button <= 0) || (button > pci->hli.hl_gi.btn_ns)) {
261 printf("Which button (1 to %i): ", pci->hli.hl_gi.btn_ns);
262 scanf("%i", &button);
263 }
265 printf("Selecting button %i...\n", button);
266 /* This is the point where applications with fifos have to hand in a NAV packet
267 * which has traveled through the fifos. See the notes above. */
268 dvdnav_button_select_and_activate(dvdnav, pci, button);
269 }
270 }
271 break;
272 case DVDNAV_HOP_CHANNEL:
273 /* This event is issued whenever a non-seamless operation has been executed.
274 * Applications with fifos should drop the fifos content to speed up responsiveness. */
275 break;
276 case DVDNAV_STOP:
277 /* Playback should end here. */
278 finished = 1;
279 break;
280 default:
281 printf("Unknown event (%i)\n", event);
282 finished = 1;
283 break;
284 }
285 #if DVD_READ_CACHE
286 dvdnav_free_cache_block(dvdnav, buf);
287 #endif
288 }
290 /* destroy dvdnav handle */
291 if (dvdnav_close(dvdnav) != DVDNAV_STATUS_OK) {
292 printf("Error on dvdnav_close: %s\n", dvdnav_err_to_string(dvdnav));
293 return 5;
294 }
295 close(output_fd);
297 return 0;
298 }