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-rw-r--r--doc/hackersguide/library.docbook94
1 files changed, 47 insertions, 47 deletions
diff --git a/doc/hackersguide/library.docbook b/doc/hackersguide/library.docbook
index 03a863c39..01412e362 100644
--- a/doc/hackersguide/library.docbook
+++ b/doc/hackersguide/library.docbook
@@ -32,7 +32,7 @@
Details on the OSD feature can be found in the <link linkend="osd">OSD section</link>.
</para>
</sect1>
-
+
<sect1>
<title>Writing a new frontend to xine</title>
<para>
@@ -51,21 +51,21 @@
<programlisting>
/*
** Copyright (C) 2003 Daniel Caujolle-Bert &lt;segfault@club-internet.fr&gt;
-**
+**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
-**
+**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
-**
+**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-**
+**
*/
/*
@@ -127,7 +127,7 @@ static void dest_size_cb(void *data, int video_width, int video_height, double v
/* this will be called by xine when it's about to draw the frame */
static void frame_output_cb(void *data, int video_width, int video_height,
double video_pixel_aspect, int *dest_x, int *dest_y,
- int *dest_width, int *dest_height,
+ int *dest_width, int *dest_height,
double *dest_pixel_aspect, int *win_x, int *win_y) {
*dest_x = 0;
*dest_y = 0;
@@ -139,7 +139,7 @@ static void frame_output_cb(void *data, int video_width, int video_height,
}
static void event_listener(void *user_data, const xine_event_t *event) {
- switch(event-&gt;type) {
+ switch(event-&gt;type) {
case XINE_EVENT_UI_PLAYBACK_FINISHED:
running = 0;
break;
@@ -147,11 +147,11 @@ static void event_listener(void *user_data, const xine_event_t *event) {
case XINE_EVENT_PROGRESS:
{
xine_progress_data_t *pevent = (xine_progress_data_t *) event-&gt;data;
-
+
printf("%s [%d%%]\n", pevent-&gt;description, pevent-&gt;percent);
}
break;
-
+
/* you can handle a lot of other interesting events here */
}
}
@@ -175,7 +175,7 @@ int main(int argc, char **argv) {
else if (strcmp(argv[i], "-ao") == 0) {
ao_driver = argv[++i];
}
- else
+ else
mrl = argv[i];
}
@@ -195,7 +195,7 @@ int main(int argc, char **argv) {
snprintf(configfile, sizeof(configfile), "%s%s", xine_get_homedir(), "/.xine/config");
xine_config_load(xine, configfile);
xine_init(xine);
-
+
display = XOpenDisplay(NULL);
screen = XDefaultScreen(display);
xpos = 0;
@@ -212,7 +212,7 @@ int main(int argc, char **argv) {
window[1] = XCreateSimpleWindow(display, XDefaultRootWindow(display),
0, 0, (DisplayWidth(display, screen)),
(DisplayHeight(display, screen)), 0, 0, 0);
-
+
XSelectInput(display, window[0], INPUT_MOTION);
XSelectInput(display, window[1], INPUT_MOTION);
@@ -223,14 +223,14 @@ int main(int argc, char **argv) {
XChangeProperty(display, window[1],
XA_NO_BORDER, XA_NO_BORDER, 32, PropModeReplace, (unsigned char *) &amp;mwmhints,
PROP_MWM_HINTS_ELEMENTS);
-
+
XMapRaised(display, window[fullscreen]);
-
+
res_h = (DisplayWidth(display, screen) * 1000 / DisplayWidthMM(display, screen));
res_v = (DisplayHeight(display, screen) * 1000 / DisplayHeightMM(display, screen));
XSync(display, False);
XUnlockDisplay(display);
-
+
/* filling in the xine visual struct */
vis.display = display;
vis.screen = screen;
@@ -239,7 +239,7 @@ int main(int argc, char **argv) {
vis.frame_output_cb = frame_output_cb;
vis.user_data = NULL;
pixel_aspect = res_v / res_h;
-
+
/* opening xine output ports */
vo_port = xine_open_video_driver(xine, vo_driver, XINE_VISUAL_TYPE_X11, (void *)&amp;vis);
ao_port = xine_open_audio_driver(xine , ao_driver, NULL);
@@ -249,11 +249,11 @@ int main(int argc, char **argv) {
/* hook our event handler into the streams events */
event_queue = xine_event_new_queue(stream);
xine_event_create_listener_thread(event_queue, event_listener, NULL);
-
+
/* make the video window visible to xine */
xine_port_send_gui_data(vo_port, XINE_GUI_SEND_DRAWABLE_CHANGED, (void *) window[fullscreen]);
xine_port_send_gui_data(vo_port, XINE_GUI_SEND_VIDEOWIN_VISIBLE, (void *) 1);
-
+
/* start playback */
if (!xine_open(stream, mrl) || !xine_play(stream, 0, 0)) {
printf("Unable to open mrl '%s'\n", mrl);
@@ -269,12 +269,12 @@ int main(int argc, char **argv) {
if( got_event )
XNextEvent(display, &amp;xevent);
XUnlockDisplay(display);
-
+
if( !got_event ) {
xine_usec_sleep(20000);
continue;
}
-
+
switch(xevent.type) {
case KeyPress:
@@ -283,27 +283,27 @@ int main(int argc, char **argv) {
KeySym ksym;
char kbuf[256];
int len;
-
+
kevent = xevent.xkey;
-
+
XLockDisplay(display);
len = XLookupString(&amp;kevent, kbuf, sizeof(kbuf), &amp;ksym, NULL);
XUnlockDisplay(display);
-
+
switch (ksym) {
-
+
case XK_q:
case XK_Q:
/* user pressed q => quit */
running = 0;
break;
-
+
case XK_f:
case XK_F:
{
/* user pressed f => toggle fullscreen */
Window tmp_win;
-
+
XLockDisplay(display);
XUnmapWindow(display, window[fullscreen]);
fullscreen = !fullscreen;
@@ -313,36 +313,36 @@ int main(int argc, char **argv) {
DefaultRootWindow(display),
0, 0, &amp;xpos, &amp;ypos, &amp;tmp_win);
XUnlockDisplay(display);
-
- xine_port_send_gui_data(vo_port, XINE_GUI_SEND_DRAWABLE_CHANGED,
+
+ xine_port_send_gui_data(vo_port, XINE_GUI_SEND_DRAWABLE_CHANGED,
(void*) window[fullscreen]);
}
break;
-
+
case XK_Up:
/* cursor up => increase volume */
xine_set_param(stream, XINE_PARAM_AUDIO_VOLUME,
(xine_get_param(stream, XINE_PARAM_AUDIO_VOLUME) + 1));
break;
-
+
case XK_Down:
/* cursor down => decrease volume */
xine_set_param(stream, XINE_PARAM_AUDIO_VOLUME,
(xine_get_param(stream, XINE_PARAM_AUDIO_VOLUME) - 1));
break;
-
+
case XK_plus:
/* plus => next audio channel */
- xine_set_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL,
+ xine_set_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL,
(xine_get_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL) + 1));
break;
-
+
case XK_minus:
/* minus => previous audio channel */
- xine_set_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL,
+ xine_set_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL,
(xine_get_param(stream, XINE_PARAM_AUDIO_CHANNEL_LOGICAL) - 1));
break;
-
+
case XK_space:
/* space => toggle pause mode */
if (xine_get_param(stream, XINE_PARAM_SPEED) != XINE_SPEED_PAUSE)
@@ -350,26 +350,26 @@ int main(int argc, char **argv) {
else
xine_set_param(stream, XINE_PARAM_SPEED, XINE_SPEED_NORMAL);
break;
-
+
}
}
break;
-
+
case Expose:
/* this handles (partial) occlusion of our video window */
if (xevent.xexpose.count != 0)
break;
xine_port_send_gui_data(vo_port, XINE_GUI_SEND_EXPOSE_EVENT, &amp;xevent);
break;
-
+
case ConfigureNotify:
{
XConfigureEvent *cev = (XConfigureEvent *) &amp;xevent;
Window tmp_win;
-
+
width = cev-&gt;width;
height = cev-&gt;height;
-
+
if ((cev-&gt;x == 0) &amp;&amp; (cev-&gt;y == 0)) {
XLockDisplay(display);
XTranslateCoordinates(display, cev-&gt;window,
@@ -382,26 +382,26 @@ int main(int argc, char **argv) {
}
}
break;
-
+
}
}
-
+
/* cleanup */
xine_close(stream);
xine_event_dispose_queue(event_queue);
xine_dispose(stream);
- xine_close_audio_driver(xine, ao_port);
- xine_close_video_driver(xine, vo_port);
+ xine_close_audio_driver(xine, ao_port);
+ xine_close_video_driver(xine, vo_port);
xine_exit(xine);
-
+
XLockDisplay(display);
XUnmapWindow(display, window[fullscreen]);
XDestroyWindow(display, window[0]);
XDestroyWindow(display, window[1]);
XUnlockDisplay(display);
-
+
XCloseDisplay (display);
-
+
return 0;
}</programlisting>
</sect2>
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 12:08:26 +0000