Mercurial > hg > index.fcgi > dvdnav-rip > dvdnav-rip-1pba
view menus.c @ 2:399518436fcf
fix tabbing
| author | paulo@thepaulopc |
|---|---|
| date | Fri, 13 Nov 2009 00:02:37 -0800 |
| parents | cfe5048cc182 |
| children | ffbf478b80c2 |
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 }
83 /* the read loop which regularly calls dvdnav_get_next_block
84 * and handles the returned events */
85 printf("Reading...\n");
86 while (!finished) {
87 int result, event, len;
88 uint8_t *buf = mem;
90 /* the main reading function */
91 #if DVD_READ_CACHE
92 result = dvdnav_get_next_cache_block(dvdnav, &buf, &event, &len);
93 #else
94 result = dvdnav_get_next_block(dvdnav, buf, &event, &len);
95 #endif
97 if (result == DVDNAV_STATUS_ERR) {
98 printf("Error getting next block: %s\n", dvdnav_err_to_string(dvdnav));
99 return 3;
100 }
102 switch (event) {
103 case DVDNAV_BLOCK_OK:
104 /* We have received a regular block of the currently playing MPEG stream.
105 * A real player application would now pass this block through demuxing
106 * and decoding. We simply write it to disc here. */
108 if (!output_fd && (dump || tt_dump)) {
109 printf("Opening output...\n");
110 output_fd = open("libdvdnav.mpg", O_CREAT | O_WRONLY | O_APPEND, S_IRWXU | S_IRWXG);
111 if (output_fd == -1) {
112 printf("Error opening output\n");
113 return 4;
114 }
115 }
117 if (dump || tt_dump)
118 write(output_fd, buf, len);
120 break;
121 case DVDNAV_NOP:
122 /* Nothing to do here. */
123 break;
124 case DVDNAV_STILL_FRAME:
125 /* We have reached a still frame. A real player application would wait
126 * the amount of time specified by the still's length while still handling
127 * user input to make menus and other interactive stills work.
128 * A length of 0xff means an indefinite still which has to be skipped
129 * indirectly by some user interaction. */
130 dvdnav_still_event_t *still_event = (dvdnav_still_event_t *)buf;
131 if (still_event->length < 0xff)
132 printf("Skipping %d seconds of still frame\n", still_event->length);
133 else
134 printf("Skipping indefinite length still frame\n");
135 dvdnav_still_skip(dvdnav);
136 break;
137 case DVDNAV_WAIT:
138 /* We have reached a point in DVD playback, where timing is critical.
139 * Player application with internal fifos can introduce state
140 * inconsistencies, because libdvdnav is always the fifo's length
141 * ahead in the stream compared to what the application sees.
142 * Such applications should wait until their fifos are empty
143 * when they receive this type of event. */
144 printf("Skipping wait condition\n");
145 dvdnav_wait_skip(dvdnav);
146 break;
147 case DVDNAV_SPU_CLUT_CHANGE:
148 /* Player applications should pass the new colour lookup table to their
149 * SPU decoder */
150 break;
151 case DVDNAV_SPU_STREAM_CHANGE:
152 /* Player applications should inform their SPU decoder to switch channels */
153 break;
154 case DVDNAV_AUDIO_STREAM_CHANGE:
155 /* Player applications should inform their audio decoder to switch channels */
156 break;
157 case DVDNAV_HIGHLIGHT:
158 /* Player applications should inform their overlay engine to highlight the
159 * given button */
160 dvdnav_highlight_event_t *highlight_event = (dvdnav_highlight_event_t *)buf;
161 printf("Selected button %d\n", highlight_event->buttonN);
162 break;
163 case DVDNAV_VTS_CHANGE:
164 /* Some status information like video aspect and video scale permissions do
165 * not change inside a VTS. Therefore this event can be used to query such
166 * information only when necessary and update the decoding/displaying
167 * accordingly. */
168 break;
169 case DVDNAV_CELL_CHANGE:
170 /* Some status information like the current Title and Part numbers do not
171 * change inside a cell. Therefore this event can be used to query such
172 * information only when necessary and update the decoding/displaying
173 * accordingly. */
174 {
175 int32_t tt = 0, ptt = 0;
176 uint32_t pos, len;
177 char input = '\0';
179 dvdnav_current_title_info(dvdnav, &tt, &ptt);
180 dvdnav_get_position(dvdnav, &pos, &len);
181 printf("Cell change: Title %d, Chapter %d\n", tt, ptt);
182 printf("At position %.0f%% inside the feature\n", 100 * (double)pos / (double)len);
184 dump = 0;
185 if (tt_dump && tt != tt_dump)
186 tt_dump = 0;
188 if (tt_skip && tt != tt_skip)
189 tt_skip = 0;
191 if (output_fd && !tt_dump) {
192 printf("Closing output...\n");
193 output_fd = close(output_fd);
194 }
196 if (!dump && !tt_dump && !tt_skip) {
197 fflush(stdin);
198 while ((input != 'a') && (input != 's') && (input != 'q') && (input != 't') && (input != 'l')) {
199 printf("(a)ppend cell to output\n(s)kip cell\nappend until end of (t)itle\nskip tit(l)e\n(q)uit\n");
200 scanf("%c", &input);
201 }
203 switch (input) {
204 case 'a':
205 dump = 1;
206 break;
207 case 't':
208 tt_dump = tt;
209 break;
210 case 'l':
211 tt_skip = tt;
212 break;
213 case 'q':
214 finished = 1;
215 }
216 }
217 }
218 break;
219 case DVDNAV_NAV_PACKET:
220 /* A NAV packet provides PTS discontinuity information, angle linking information and
221 * button definitions for DVD menus. Angles are handled completely inside libdvdnav.
222 * For the menus to work, the NAV packet information has to be passed to the overlay
223 * engine of the player so that it knows the dimensions of the button areas. */
224 {
225 pci_t *pci;
227 /* Applications with fifos should not use these functions to retrieve NAV packets,
228 * they should implement their own NAV handling, because the packet you get from these
229 * functions will already be ahead in the stream which can cause state inconsistencies.
230 * Applications with fifos should therefore pass the NAV packet through the fifo
231 * and decoding pipeline just like any other data. */
232 pci = dvdnav_get_current_nav_pci(dvdnav);
233 dvdnav_get_current_nav_dsi(dvdnav);
235 if(pci->hli.hl_gi.btn_ns > 0) {
236 int button;
238 printf("Found %i DVD menu buttons...\n", pci->hli.hl_gi.btn_ns);
240 for (button = 0; button < pci->hli.hl_gi.btn_ns; button++) {
241 btni_t *btni = &(pci->hli.btnit[button]);
242 printf("Button %i top-left @ (%i,%i), bottom-right @ (%i,%i)\n",
243 button + 1, btni->x_start, btni->y_start,
244 btni->x_end, btni->y_end);
245 }
247 button = 0;
248 while ((button <= 0) || (button > pci->hli.hl_gi.btn_ns)) {
249 printf("Which button (1 to %i): ", pci->hli.hl_gi.btn_ns);
250 scanf("%i", &button);
251 }
253 printf("Selecting button %i...\n", button);
254 /* This is the point where applications with fifos have to hand in a NAV packet
255 * which has traveled through the fifos. See the notes above. */
256 dvdnav_button_select_and_activate(dvdnav, pci, button);
257 }
258 }
259 break;
260 case DVDNAV_HOP_CHANNEL:
261 /* This event is issued whenever a non-seamless operation has been executed.
262 * Applications with fifos should drop the fifos content to speed up responsiveness. */
263 break;
264 case DVDNAV_STOP:
265 /* Playback should end here. */
266 finished = 1;
267 break;
268 default:
269 printf("Unknown event (%i)\n", event);
270 finished = 1;
271 break;
272 }
273 #if DVD_READ_CACHE
274 dvdnav_free_cache_block(dvdnav, buf);
275 #endif
276 }
278 /* destroy dvdnav handle */
279 if (dvdnav_close(dvdnav) != DVDNAV_STATUS_OK) {
280 printf("Error on dvdnav_close: %s\n", dvdnav_err_to_string(dvdnav));
281 return 5;
282 }
283 close(output_fd);
285 return 0;
286 }