first sort of working commit
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425fa1202e
BIN
.mpdart.c.swp
BIN
.mpdart.c.swp
Binary file not shown.
3
Makefile
3
Makefile
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@ -1,8 +1,9 @@
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.POSIX:
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include config.mk
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LIBS=-lX11
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all: mpdart config.mk
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mpdart: mpdart.c
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$(CC) $(CONFIG) $(CFLAGS) $(CXXFLAGS) -o $@ mpdart.c
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$(CC) $(CONFIG) $(LIBS) $(CFLAGS) $(CXXFLAGS) -o $@ mpdart.c
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clean:
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rm -f mpdart
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install: mpdart
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19
README
Normal file
19
README
Normal file
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@ -0,0 +1,19 @@
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mpdart
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======
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A simple mpd client which only displays the cover art for the current song.
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depends
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-------
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libX11
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libmpdclient
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libim2
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pkg-config (optional build time dependency, without it one might need to change the generated config.mk manually)
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building
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--------
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./configure.sh
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make
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make install # supports PREFIX and DESTDIR
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@ -1,7 +1,7 @@
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#!/bin/sh
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if command -V pkg-config >/dev/null 2>&1; then
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printf '%s\n' "CONFIG=$(pkg-config libmpdclient --libs --cflags)" > config.mk
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printf '%s\n' "CONFIG=$(pkg-config libmpdclient --libs --cflags) $(pkg-config imlib2 --libs --cflags)" > config.mk
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else
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printf '%s\n' "CONFIG=-lmpdclient" > config.mk
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printf '%s\n' "CONFIG=-lmpdclient -lImlib2" > config.mk
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fi
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348
mpdart.c
348
mpdart.c
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@ -1,21 +1,169 @@
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#include <dirent.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <string.h>
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#include <poll.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <Imlib2.h>
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#include <mpd/client.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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char* mpd_host = 0;
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unsigned mpd_port = 0;
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unsigned mpd_timeout = 0;
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/* TODO: do Imlib, fix name changing */
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/* LOADS of cleaning up to do */
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/* mpd globals */
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struct mpd_connection* connection = 0;
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int mpd_fd = 0;
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char* mpd_db_dir = 0;
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Display* xdisplay;
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int xscreen;
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Visual* xvisual;
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Colormap xcolormap;
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int xdepth;
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Window xwindow;
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GC gc;
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Imlib_Updates im_updates;
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Imlib_Image im_buffer, im_image;
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Imlib_Color_Range range;
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char* im_image_path;
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void die(const char* msg) {
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fprintf(stderr, "%s\n", msg);
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exit(1);
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}
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/* error checking malloc */
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void* xmalloc(size_t size) {
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void* ret = malloc(size);
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if (!ret)
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die("Unable to allocate memory");
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return ret;
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}
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/* returns char pointer instead of writing to predefined one */
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char* asprintf(const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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/* +1 for null byte */
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int len = vsnprintf(0, 0, fmt, ap) + 1;
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va_end(ap);
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char* ret = xmalloc(len);
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/* vsnprintf fucks up ap, so reopen it for the second call */
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va_start(ap, fmt);
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vsnprintf(ret, len, fmt, ap);
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va_end(ap);
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return ret;
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}
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/* currently only works once... why? */
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void set_window_name(char* name) {
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int len = strlen(name);
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XTextProperty prop;
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Xutf8TextListToTextProperty(xdisplay, &name, 1, XUTF8StringStyle,
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&prop);
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XSetWMName(xdisplay, xwindow, &prop);
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XSetTextProperty(xdisplay, xwindow, &prop, XInternAtom(xdisplay, "_NET_WM_NAME", False));
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XFree(prop.value);
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}
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void set_image_path(char* path) {
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if (im_image_path)
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free(im_image_path);
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im_image_path = path;
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}
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/* get currently playing song from mpd and update X window */
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void update_mpd_song(void) {
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static int song_id;
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static int old_song_id = -1;
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struct mpd_song* song;
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mpd_send_current_song(connection);
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song = mpd_recv_song(connection);
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if (!song) {
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fprintf(stderr, "Failed to get song from mpd\n");
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set_window_name("None");
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set_image_path(0);
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return;
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}
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song_id = mpd_song_get_id(song);
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if (song_id != old_song_id) {
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char* pretty_name = asprintf("%s - %s",
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mpd_song_get_tag(song, MPD_TAG_TITLE, 0),
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mpd_song_get_tag(song, MPD_TAG_ARTIST, 0));
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char* path = asprintf("%s/%s",
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mpd_db_dir, mpd_song_get_uri(song));
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set_window_name(pretty_name);
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printf("Now playing: '%s' from '%s'\n", pretty_name, path);
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/* equivalent to shell dirname="${path%/*}" */
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size_t len = strrchr(path, '/') - path;
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char* dirname = xmalloc(len + 1);
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strncpy(dirname, path, len);
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dirname[len] = '\0';
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/* account for .cue files */
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{
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char* basename = strrchr(path, '/');
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basename = basename ? basename + 1 : path;
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char* extension = strrchr(basename, '.');
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if (extension) {
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*(basename - 1) = '\0';
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}
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}
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DIR* dir = opendir(dirname);
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struct dirent* ent;
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while (ent = readdir(dir)) {
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char* extension = strrchr(ent->d_name, '.');
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/* TODO add more extensions */
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if (extension && (!strcmp(extension, ".jpg") || !strcmp(extension, ".png"))) {
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printf("Using '%s' as album art.\n", ent->d_name);
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set_image_path(asprintf("%s/%s", dirname, ent->d_name));
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break;
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}
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}
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closedir(dir);
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free(pretty_name);
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free(path);
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}
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old_song_id = song_id;
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mpd_song_free(song);
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}
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int main(int argc, char** argv) {
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/* parse args */
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char* mpd_host = 0;
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unsigned mpd_port = 0;
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unsigned mpd_timeout = 0;
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while (*++argv) {
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if (!strcmp(*argv, "-d"))
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mpd_db_dir = *++argv;
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@ -27,13 +175,10 @@ int main(int argc, char** argv) {
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mpd_timeout = atoi(*++argv);
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}
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if (!mpd_db_dir) {
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fprintf(stderr, "Please specify mpd music directory with -d\n");
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exit(1);
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}
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if (!mpd_db_dir)
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die("Please specify mpd music directory with -d");
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/* strip all '/'es from the end of it */
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/* strip all '/'es from the end of mpd_db_dir */
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{
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int i = 0;
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for (; mpd_db_dir[i]; i++);
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mpd_db_dir[i+1] = '\0';
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}
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/* set up mpd connection */
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connection = mpd_connection_new(mpd_host, mpd_port, mpd_timeout);
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if (!connection) {
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fprintf(stderr, "Unable to allocate memory for mpd_connection struct\n");
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exit(1);
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}
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if (!connection)
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die("Unable to allocate memory for mpd_connection struct");
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if (mpd_connection_get_error(connection) != MPD_ERROR_SUCCESS) {
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fprintf(stderr, "%s\n", mpd_connection_get_error_message(connection));
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exit(1);
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}
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if (mpd_connection_get_error(connection) != MPD_ERROR_SUCCESS)
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die(mpd_connection_get_error_message(connection));
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const int* version = mpd_connection_get_server_version(connection);
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printf("Connected to mpd server version %d.%d.%d\n", version[0], version[1], version[2]);
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int song_id;
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int old_song_id = -1;
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/* setup x */
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XInitThreads();
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xdisplay = XOpenDisplay(0);
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if (!xdisplay)
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die("Cannot open display");
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xscreen = XDefaultScreen(xdisplay);
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gc = DefaultGC(xdisplay, xscreen);
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xvisual = DefaultVisual(xdisplay, xscreen);
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xdepth = DefaultDepth(xdisplay, xscreen);
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xcolormap = DefaultColormap(xdisplay, xscreen);
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Window xparent = XRootWindow(xdisplay, xscreen);
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unsigned int width = 256, height = 256, x = 0, y = 0;
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unsigned int border_width = 0;
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/* are these two needed when border_width is 0? */
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unsigned int border_color = BlackPixel(xdisplay, xscreen);
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unsigned int background_color = WhitePixel(xdisplay, xscreen);
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xwindow = XCreateSimpleWindow(
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xdisplay,
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xparent,
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x,
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y,
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width,
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height,
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border_width,
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border_color,
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background_color);
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XSelectInput(xdisplay, xwindow, ExposureMask);
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XMapWindow(xdisplay, xwindow);
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set_window_name("mpdart");
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Atom wm_delete = XInternAtom(xdisplay, "WM_DELETE_WINDOW", True);
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XSetWMProtocols(xdisplay, xwindow, &wm_delete, 1);
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/* setup Imlib */
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imlib_set_cache_size(2048 * 1024);
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imlib_set_color_usage(128);
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imlib_context_set_dither(1);
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imlib_context_set_display(xdisplay);
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imlib_context_set_visual(xvisual);
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imlib_context_set_colormap(xcolormap);
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imlib_context_set_drawable(xwindow);
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im_updates = imlib_updates_init();
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/* get currently playing song before waiting for new ones */
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update_mpd_song();
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mpd_fd = mpd_connection_get_fd(connection);
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int xfd = ConnectionNumber(xdisplay);
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struct pollfd fds[2] = {
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{
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.fd = xfd,
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.events = POLLIN
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},
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{
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.fd = mpd_fd,
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.events = POLLIN
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}
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};
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if(!mpd_send_idle(connection))
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die("Unable to send idle to mpd");
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/* mpd event loop */
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while (1) {
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int ready_fds = poll(fds, 2, 1000);
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if (ready_fds < 0) {
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die("Error in poll");
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} else if (ready_fds > 0) {
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/* X event loop */
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if (fds[0].revents & POLLIN) {
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XEvent ev;
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XNextEvent(xdisplay, &ev);
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struct mpd_song* song;
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mpd_send_current_song(connection);
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song = mpd_recv_song(connection);
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if (!song) {
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fprintf(stderr, "failed to get mpd song\n");
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/* TODO clear image */
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goto wait;
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switch (ev.type) {
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case ClientMessage:
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if (ev.xclient.data.l[0] == wm_delete) {
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XCloseDisplay(xdisplay);
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die("Window Closed");
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}
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break;
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case ConfigureNotify:
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case Expose:
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im_updates = imlib_update_append_rect(im_updates,
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ev.xexpose.x, ev.xexpose.y,
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ev.xexpose.width, ev.xexpose.height);
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break;
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}
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}
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/* MPD event loop */
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if (fds[1].revents & POLLIN) {
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mpd_run_noidle(connection);
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update_mpd_song();
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mpd_send_idle_mask(connection, MPD_IDLE_PLAYER);
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}
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}
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/* Imlib render */
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XWindowAttributes xwindow_attrs;
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XGetWindowAttributes(xdisplay, xwindow, &xwindow_attrs);
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int wx = xwindow_attrs.width,
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wy = xwindow_attrs.width;
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/* int wx = 256, wy = 256; */
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im_updates = imlib_updates_merge_for_rendering(im_updates,
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wx, wy);
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for (Imlib_Updates current_update = im_updates ; current_update;
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current_update = imlib_updates_get_next(current_update)) {
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song_id = mpd_song_get_id(song);
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int up_x, up_y, up_w, up_h, w, h;
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imlib_updates_get_coordinates(current_update,
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&up_x, &up_y, &up_w, &up_h);
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if (song_id != old_song_id) {
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/* TODO render image */
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printf("Now playing: '%s' by '%s' from '%s/%s'\n",
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mpd_song_get_tag(song, MPD_TAG_TITLE, 0),
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mpd_song_get_tag(song, MPD_TAG_ARTIST, 0),
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mpd_db_dir, mpd_song_get_uri(song));
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im_buffer = imlib_create_image(up_w, up_h);
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imlib_context_set_blend(1);
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if (!im_image_path)
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die("TODO null image_path");
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im_image = imlib_load_image(im_image_path);
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imlib_context_set_image(im_image);
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w = imlib_image_get_width();
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h = imlib_image_get_height();
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imlib_context_set_image(im_buffer);
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if (!im_image)
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die("Could not open image TODO, replace with warning and clear.");
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imlib_blend_image_onto_image(im_image, 0,
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0, 0, w, h,
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up_x, up_y, wx, wy);
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imlib_context_set_image(im_image);
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imlib_free_image();
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imlib_context_set_blend(0);
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imlib_context_set_image(im_buffer);
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imlib_render_image_on_drawable(up_x, up_y);
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imlib_free_image();
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}
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old_song_id = song_id;
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mpd_song_free(song);
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wait:
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mpd_send_idle_mask(connection, MPD_IDLE_PLAYER);
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while (!mpd_recv_idle(connection, 1))
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sleep(1);
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}
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}
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