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Diffstat (limited to '')
-rw-r--r-- | src/playlist_list.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/src/playlist_list.c b/src/playlist_list.c new file mode 100644 index 000000000..9c40e6dfe --- /dev/null +++ b/src/playlist_list.c @@ -0,0 +1,358 @@ +/* + * Copyright (C) 2003-2010 The Music Player Daemon Project + * http://www.musicpd.org + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "playlist_list.h" +#include "playlist_plugin.h" +#include "playlist/extm3u_playlist_plugin.h" +#include "playlist/m3u_playlist_plugin.h" +#include "playlist/xspf_playlist_plugin.h" +#include "playlist/lastfm_playlist_plugin.h" +#include "playlist/pls_playlist_plugin.h" +#include "playlist/asx_playlist_plugin.h" +#include "playlist/cue_playlist_plugin.h" +#include "playlist/flac_playlist_plugin.h" +#include "input_stream.h" +#include "uri.h" +#include "utils.h" +#include "conf.h" +#include "glib_compat.h" + +#include <assert.h> +#include <string.h> +#include <stdio.h> + +static const struct playlist_plugin *const playlist_plugins[] = { + &extm3u_playlist_plugin, + &m3u_playlist_plugin, + &xspf_playlist_plugin, + &pls_playlist_plugin, + &asx_playlist_plugin, +#ifdef ENABLE_LASTFM + &lastfm_playlist_plugin, +#endif +#ifdef HAVE_CUE + &cue_playlist_plugin, +#endif +#ifdef HAVE_FLAC + &flac_playlist_plugin, +#endif + NULL +}; + +/** which plugins have been initialized successfully? */ +static bool playlist_plugins_enabled[G_N_ELEMENTS(playlist_plugins)]; + +/** + * Find the "playlist" configuration block for the specified plugin. + * + * @param plugin_name the name of the playlist plugin + * @return the configuration block, or NULL if none was configured + */ +static const struct config_param * +playlist_plugin_config(const char *plugin_name) +{ + const struct config_param *param = NULL; + + assert(plugin_name != NULL); + + while ((param = config_get_next_param(CONF_PLAYLIST_PLUGIN, param)) != NULL) { + const char *name = + config_get_block_string(param, "name", NULL); + if (name == NULL) + g_error("playlist configuration without 'plugin' name in line %d", + param->line); + + if (strcmp(name, plugin_name) == 0) + return param; + } + + return NULL; +} + +void +playlist_list_global_init(void) +{ + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + const struct config_param *param = + playlist_plugin_config(plugin->name); + + if (!config_get_block_bool(param, "enabled", true)) + /* the plugin is disabled in mpd.conf */ + continue; + + playlist_plugins_enabled[i] = + playlist_plugin_init(playlist_plugins[i], param); + } +} + +void +playlist_list_global_finish(void) +{ + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) + if (playlist_plugins_enabled[i]) + playlist_plugin_finish(playlist_plugins[i]); +} + +static struct playlist_provider * +playlist_list_open_uri_scheme(const char *uri, bool *tried) +{ + char *scheme; + struct playlist_provider *playlist = NULL; + + assert(uri != NULL); + + scheme = g_uri_parse_scheme(uri); + if (scheme == NULL) + return NULL; + + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + + assert(!tried[i]); + + if (playlist_plugins_enabled[i] && plugin->open_uri != NULL && + plugin->schemes != NULL && + string_array_contains(plugin->schemes, scheme)) { + playlist = playlist_plugin_open_uri(plugin, uri); + if (playlist != NULL) + break; + + tried[i] = true; + } + } + + g_free(scheme); + return playlist; +} + +static struct playlist_provider * +playlist_list_open_uri_suffix(const char *uri, const bool *tried) +{ + const char *suffix; + struct playlist_provider *playlist = NULL; + + assert(uri != NULL); + + suffix = uri_get_suffix(uri); + if (suffix == NULL) + return NULL; + + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + + if (playlist_plugins_enabled[i] && !tried[i] && + plugin->open_uri != NULL && plugin->suffixes != NULL && + string_array_contains(plugin->suffixes, suffix)) { + playlist = playlist_plugin_open_uri(plugin, uri); + if (playlist != NULL) + break; + } + } + + return playlist; +} + +struct playlist_provider * +playlist_list_open_uri(const char *uri) +{ + struct playlist_provider *playlist; + /** this array tracks which plugins have already been tried by + playlist_list_open_uri_scheme() */ + bool tried[G_N_ELEMENTS(playlist_plugins) - 1]; + + assert(uri != NULL); + + memset(tried, false, sizeof(tried)); + + playlist = playlist_list_open_uri_scheme(uri, tried); + if (playlist == NULL) + playlist = playlist_list_open_uri_suffix(uri, tried); + + return playlist; +} + +static struct playlist_provider * +playlist_list_open_stream_mime2(struct input_stream *is, const char *mime) +{ + struct playlist_provider *playlist; + + assert(is != NULL); + assert(mime != NULL); + + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + + if (playlist_plugins_enabled[i] && + plugin->open_stream != NULL && + plugin->mime_types != NULL && + string_array_contains(plugin->mime_types, mime)) { + /* rewind the stream, so each plugin gets a + fresh start */ + input_stream_seek(is, 0, SEEK_SET, NULL); + + playlist = playlist_plugin_open_stream(plugin, is); + if (playlist != NULL) + return playlist; + } + } + + return NULL; +} + +static struct playlist_provider * +playlist_list_open_stream_mime(struct input_stream *is) +{ + assert(is->mime != NULL); + + const char *semicolon = strchr(is->mime, ';'); + if (semicolon == NULL) + return playlist_list_open_stream_mime2(is, is->mime); + + if (semicolon == is->mime) + return NULL; + + /* probe only the portion before the semicolon*/ + char *mime = g_strndup(is->mime, semicolon - is->mime); + struct playlist_provider *playlist = + playlist_list_open_stream_mime2(is, mime); + g_free(mime); + return playlist; +} + +static struct playlist_provider * +playlist_list_open_stream_suffix(struct input_stream *is, const char *suffix) +{ + struct playlist_provider *playlist; + + assert(is != NULL); + assert(suffix != NULL); + + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + + if (playlist_plugins_enabled[i] && + plugin->open_stream != NULL && + plugin->suffixes != NULL && + string_array_contains(plugin->suffixes, suffix)) { + /* rewind the stream, so each plugin gets a + fresh start */ + input_stream_seek(is, 0, SEEK_SET, NULL); + + playlist = playlist_plugin_open_stream(plugin, is); + if (playlist != NULL) + return playlist; + } + } + + return NULL; +} + +struct playlist_provider * +playlist_list_open_stream(struct input_stream *is, const char *uri) +{ + const char *suffix; + struct playlist_provider *playlist; + + GError *error = NULL; + while (!is->ready) { + int ret = input_stream_buffer(is, &error); + if (ret < 0) { + input_stream_close(is); + g_warning("%s", error->message); + g_error_free(error); + return NULL; + } + } + + if (is->mime != NULL) { + playlist = playlist_list_open_stream_mime(is); + if (playlist != NULL) + return playlist; + } + + suffix = uri != NULL ? uri_get_suffix(uri) : NULL; + if (suffix != NULL) { + playlist = playlist_list_open_stream_suffix(is, suffix); + if (playlist != NULL) + return playlist; + } + + return NULL; +} + +bool +playlist_suffix_supported(const char *suffix) +{ + assert(suffix != NULL); + + for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) { + const struct playlist_plugin *plugin = playlist_plugins[i]; + + if (playlist_plugins_enabled[i] && plugin->suffixes != NULL && + string_array_contains(plugin->suffixes, suffix)) + return true; + } + + return false; +} + +struct playlist_provider * +playlist_list_open_path(const char *path_fs, struct input_stream **is_r) +{ + GError *error = NULL; + const char *suffix; + struct input_stream *is; + struct playlist_provider *playlist; + + assert(path_fs != NULL); + + suffix = uri_get_suffix(path_fs); + if (suffix == NULL || !playlist_suffix_supported(suffix)) + return NULL; + + is = input_stream_open(path_fs, &error); + if (is == NULL) { + if (error != NULL) { + g_warning("%s", error->message); + g_error_free(error); + } + + return NULL; + } + + while (!is->ready) { + int ret = input_stream_buffer(is, &error); + if (ret < 0) { + input_stream_close(is); + g_warning("%s", error->message); + g_error_free(error); + return NULL; + } + } + + playlist = playlist_list_open_stream_suffix(is, suffix); + if (playlist != NULL) + *is_r = is; + else + input_stream_close(is); + + return playlist; +} |