/* * Copyright (C) 2003-2009 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 "input_plugin.h" #include "config.h" #include "conf.h" #include "input/file_input_plugin.h" #ifdef ENABLE_ARCHIVE #include "input/archive_input_plugin.h" #endif #ifdef HAVE_CURL #include "input/curl_input_plugin.h" #endif #include "input/lastfm_input_plugin.h" #ifdef ENABLE_MMS #include "input/mms_input_plugin.h" #endif #include <glib.h> #include <assert.h> #include <string.h> static const struct input_plugin *const input_plugins[] = { &input_plugin_file, #ifdef ENABLE_ARCHIVE &input_plugin_archive, #endif #ifdef HAVE_CURL &input_plugin_curl, #endif #ifdef ENABLE_LASTFM &lastfm_input_plugin, #endif #ifdef ENABLE_MMS &input_plugin_mms, #endif }; static bool input_plugins_enabled[G_N_ELEMENTS(input_plugins)]; static const unsigned num_input_plugins = sizeof(input_plugins) / sizeof(input_plugins[0]); /** * Find the "input" configuration block for the specified plugin. * * @param plugin_name the name of the input plugin * @return the configuration block, or NULL if none was configured */ static const struct config_param * input_plugin_config(const char *plugin_name) { const struct config_param *param = NULL; while ((param = config_get_next_param(CONF_INPUT, param)) != NULL) { const char *name = config_get_block_string(param, "plugin", NULL); if (name == NULL) g_error("input configuration without 'plugin' name in line %d", param->line); if (strcmp(name, plugin_name) == 0) return param; } return NULL; } void input_stream_global_init(void) { for (unsigned i = 0; i < num_input_plugins; ++i) { const struct input_plugin *plugin = input_plugins[i]; const struct config_param *param = input_plugin_config(plugin->name); if (!config_get_block_bool(param, "enabled", true)) /* the plugin is disabled in mpd.conf */ continue; if (plugin->init == NULL || plugin->init(param)) input_plugins_enabled[i] = true; } } void input_stream_global_finish(void) { for (unsigned i = 0; i < num_input_plugins; ++i) if (input_plugins_enabled[i] && input_plugins[i]->finish != NULL) input_plugins[i]->finish(); } bool input_stream_open(struct input_stream *is, const char *url) { is->seekable = false; is->ready = false; is->offset = 0; is->size = -1; is->error = 0; is->mime = NULL; for (unsigned i = 0; i < num_input_plugins; ++i) { const struct input_plugin *plugin = input_plugins[i]; if (input_plugins_enabled[i] && plugin->open(is, url)) { assert(is->plugin != NULL); assert(is->plugin->close != NULL); assert(is->plugin->read != NULL); assert(is->plugin->eof != NULL); assert(!is->seekable || is->plugin->seek != NULL); return true; } } return false; } bool input_stream_seek(struct input_stream *is, off_t offset, int whence) { if (is->plugin->seek == NULL) return false; return is->plugin->seek(is, offset, whence); } struct tag * input_stream_tag(struct input_stream *is) { assert(is != NULL); return is->plugin->tag != NULL ? is->plugin->tag(is) : NULL; } size_t input_stream_read(struct input_stream *is, void *ptr, size_t size) { assert(ptr != NULL); assert(size > 0); return is->plugin->read(is, ptr, size); } void input_stream_close(struct input_stream *is) { is->plugin->close(is); g_free(is->mime); } bool input_stream_eof(struct input_stream *is) { return is->plugin->eof(is); } int input_stream_buffer(struct input_stream *is) { if (is->plugin->buffer == NULL) return 0; return is->plugin->buffer(is); }