Using the xine library xine architecture as visible to libxine clients The following drawing shows the components of xine as outside applications see them. For every component, the functions for creating and destroying it are given. Every other function works in the context it is enclosed in. Functions that facilitate the connection of the individual components are also given. outside view on xine components The function are named just to give you an overview of what is actually there. It is all thoroughly documented in the plublic header xine.h, which is the main and preferably the only xine header, clients should include. (xine/xineutils.h and the XML parser might make an exception.) Details on the OSD feature can be found in the OSD section. Writing a new frontend to xine The best way to explain this seems to be actual code. Below you will find a very easy and hopefully self-explaining xine frontend to give you a start. Source code of a simple X11 frontend /* ** Copyright (C) 2003 Daniel Caujolle-Bert <segfault@club-internet.fr> ** ** 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. ** */ /* * compile-command: "gcc -Wall -O2 `xine-config --cflags` `xine-config --libs` -lX11 -lm -o xinimin xinimin.c" */ #include <stdio.h> #include <string.h> #include <math.h> #include <X11/X.h> #include <X11/Xlib.h> #include <X11/Xutil.h> #include <X11/keysym.h> #include <X11/Xatom.h> #include <X11/Xutil.h> #include <X11/extensions/XShm.h> #include <xine.h> #include <xine/xineutils.h> #define MWM_HINTS_DECORATIONS (1L << 1) #define PROP_MWM_HINTS_ELEMENTS 5 typedef struct { uint32_t flags; uint32_t functions; uint32_t decorations; int32_t input_mode; uint32_t status; } MWMHints; static xine_t *xine; static xine_stream_t *stream; static xine_video_port_t *vo_port; static xine_audio_port_t *ao_port; static xine_event_queue_t *event_queue; static Display *display; static int screen; static Window window[2]; static int xpos, ypos, width, height, fullscreen; static double pixel_aspect; static int running = 1; /* this will be called by xine, if it wants to know the target size of a frame */ static void dest_size_cb(void *data, int video_width, int video_height, double video_pixel_aspect, int *dest_width, int *dest_height, double *dest_pixel_aspect) { *dest_width = width; *dest_height = height; *dest_pixel_aspect = pixel_aspect; } /* 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, double *dest_pixel_aspect, int *win_x, int *win_y) { *dest_x = 0; *dest_y = 0; *win_x = xpos; *win_y = ypos; *dest_width = width; *dest_height = height; *dest_pixel_aspect = pixel_aspect; } static void event_listener(void *user_data, const xine_event_t *event) { switch(event->type) { case XINE_EVENT_UI_PLAYBACK_FINISHED: running = 0; break; case XINE_EVENT_PROGRESS: { xine_progress_data_t *pevent = (xine_progress_data_t *) event->data; printf("%s [%d%%]\n", pevent->description, pevent->percent); } break; /* you can handle a lot of other interesting events here */ } } int main(int argc, char **argv) { char configfile[2048]; x11_visual_t vis; double res_h, res_v; char *vo_driver = "auto"; char *ao_driver = "auto"; char *mrl = NULL; int i; Atom XA_NO_BORDER; MWMHints mwmhints; /* parsing command line */ for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-vo") == 0) { vo_driver = argv[++i]; } else if (strcmp(argv[i], "-ao") == 0) { ao_driver = argv[++i]; } else mrl = argv[i]; } if (!mrl) { printf("specify an mrl\n"); return 1; } printf("mrl: '%s'\n", mrl); if (!XInitThreads()) { printf("XInitThreads() failed\n"); return 1; } /* load xine config file and init xine */ xine = xine_new(); sprintf(configfile, "%s%s", xine_get_homedir(), "/.xine/config"); xine_config_load(xine, configfile); xine_init(xine); display = XOpenDisplay(NULL); screen = XDefaultScreen(display); xpos = 0; ypos = 0; width = 320; height = 200; /* some initalization for the X11 Window we will be showing video in */ XLockDisplay(display); fullscreen = 0; window[0] = XCreateSimpleWindow(display, XDefaultRootWindow(display), xpos, ypos, width, height, 1, 0, 0); window[1] = XCreateSimpleWindow(display, XDefaultRootWindow(display), 0, 0, (DisplayWidth(display, screen)), (DisplayHeight(display, screen)), 0, 0, 0); XSelectInput(display, window[0], (ExposureMask | ButtonPressMask | KeyPressMask | ButtonMotionMask | StructureNotifyMask | PropertyChangeMask | PointerMotionMask)); XSelectInput(display, window[1], (ExposureMask | ButtonPressMask | KeyPressMask | ButtonMotionMask | StructureNotifyMask | PropertyChangeMask | PointerMotionMask)); XA_NO_BORDER = XInternAtom(display, "_MOTIF_WM_HINTS", False); mwmhints.flags = MWM_HINTS_DECORATIONS; mwmhints.decorations = 0; XChangeProperty(display, window[1], XA_NO_BORDER, XA_NO_BORDER, 32, PropModeReplace, (unsigned char *) &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; vis.d = window[fullscreen]; vis.dest_size_cb = dest_size_cb; 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 *)&vis); ao_port = xine_open_audio_driver(xine , ao_driver, NULL); /* open a xine stream connected to these ports */ stream = xine_stream_new(xine, ao_port, vo_port); /* 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); return 1; } while (running) { XEvent xevent; XNextEvent(display, &xevent); switch(xevent.type) { case KeyPress: { XKeyEvent kevent; KeySym ksym; char kbuf[256]; int len; kevent = xevent.xkey; XLockDisplay(display); len = XLookupString(&kevent, kbuf, sizeof(kbuf), &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; XMapRaised(display, window[fullscreen]); XSync(display, False); XTranslateCoordinates(display, window[fullscreen], DefaultRootWindow(display), 0, 0, &xpos, &ypos, &tmp_win); XUnlockDisplay(display); 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_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_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) xine_set_param(stream, XINE_PARAM_SPEED, XINE_SPEED_PAUSE); 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, &xevent); break; case ConfigureNotify: { XConfigureEvent *cev = (XConfigureEvent *) &xevent; Window tmp_win; width = cev->width; height = cev->height; if ((cev->x == 0) && (cev->y == 0)) { XLockDisplay(display); XTranslateCoordinates(display, cev->window, DefaultRootWindow(cev->display), 0, 0, &xpos, &ypos, &tmp_win); XUnlockDisplay(display); } else { xpos = cev->x; ypos = cev->y; } } 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_exit(xine); XLockDisplay(display); XUnmapWindow(display, window[fullscreen]); XDestroyWindow(display, window[0]); XDestroyWindow(display, window[1]); XUnlockDisplay(display); XCloseDisplay (display); return 0; }