/* * 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 "input_stream.h" #include "input_registry.h" #include "input_plugin.h" #include "input/rewind_input_plugin.h" #include <glib.h> #include <assert.h> static inline GQuark input_quark(void) { return g_quark_from_static_string("input"); } struct input_stream * input_stream_open(const char *url, GError **error_r) { GError *error = NULL; assert(error_r == NULL || *error_r == NULL); for (unsigned i = 0; input_plugins[i] != NULL; ++i) { const struct input_plugin *plugin = input_plugins[i]; struct input_stream *is; if (!input_plugins_enabled[i]) continue; is = plugin->open(url, &error); if (is != NULL) { 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); is = input_rewind_open(is); return is; } else if (error != NULL) { g_propagate_error(error_r, error); return NULL; } } g_set_error(error_r, input_quark(), 0, "Unrecognized URI"); return false; } bool input_stream_seek(struct input_stream *is, goffset offset, int whence, GError **error_r) { if (is->plugin->seek == NULL) return false; return is->plugin->seek(is, offset, whence, error_r); } 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, GError **error_r) { assert(ptr != NULL); assert(size > 0); return is->plugin->read(is, ptr, size, error_r); } void input_stream_close(struct input_stream *is) { is->plugin->close(is); } bool input_stream_eof(struct input_stream *is) { return is->plugin->eof(is); } int input_stream_buffer(struct input_stream *is, GError **error_r) { if (is->plugin->buffer == NULL) return 0; return is->plugin->buffer(is, error_r); }