32d6d4499e
Make those two methods optional to implement, and let input_stream.c provide fallbacks. The buffer() method will be removed one day, and there is now only one implementation left (input_curl.c).
145 lines
3.0 KiB
C
145 lines
3.0 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "input_stream.h"
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#include "config.h"
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#include "input_file.h"
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#ifdef ENABLE_ARCHIVE
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#include "input_archive.h"
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#endif
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#ifdef HAVE_CURL
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#include "input_curl.h"
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#endif
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#ifdef ENABLE_MMS
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#include "input_mms.h"
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#endif
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#include <glib.h>
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#include <assert.h>
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static const struct input_plugin *const input_plugins[] = {
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&input_plugin_file,
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#ifdef ENABLE_ARCHIVE
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&input_plugin_archive,
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#endif
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#ifdef HAVE_CURL
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&input_plugin_curl,
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#endif
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#ifdef ENABLE_MMS
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&input_plugin_mms,
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#endif
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};
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static const unsigned num_input_plugins =
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sizeof(input_plugins) / sizeof(input_plugins[0]);
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void input_stream_global_init(void)
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{
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#ifdef HAVE_CURL
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input_curl_global_init();
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#endif
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}
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void input_stream_global_finish(void)
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{
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#ifdef HAVE_CURL
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input_curl_global_finish();
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#endif
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}
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bool
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input_stream_open(struct input_stream *is, const char *url)
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{
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is->seekable = false;
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is->ready = false;
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is->offset = 0;
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is->size = -1;
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is->error = 0;
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is->mime = NULL;
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for (unsigned i = 0; i < num_input_plugins; ++i) {
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const struct input_plugin *plugin = input_plugins[i];
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if (plugin->open(is, url)) {
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assert(is->plugin != NULL);
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assert(is->plugin->open == NULL ||
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is->plugin == plugin);
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assert(is->plugin->close != NULL);
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assert(is->plugin->read != NULL);
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assert(is->plugin->eof != NULL);
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assert(!is->seekable || is->plugin->seek != NULL);
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return true;
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}
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}
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return false;
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}
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bool
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input_stream_seek(struct input_stream *is, off_t offset, int whence)
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{
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if (is->plugin->seek == NULL)
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return false;
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return is->plugin->seek(is, offset, whence);
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}
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struct tag *
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input_stream_tag(struct input_stream *is)
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{
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assert(is != NULL);
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return is->plugin->tag != NULL
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? is->plugin->tag(is)
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: NULL;
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}
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size_t
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input_stream_read(struct input_stream *is, void *ptr, size_t size)
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{
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assert(ptr != NULL);
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assert(size > 0);
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return is->plugin->read(is, ptr, size);
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}
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void input_stream_close(struct input_stream *is)
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{
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is->plugin->close(is);
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g_free(is->mime);
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}
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bool input_stream_eof(struct input_stream *is)
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{
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return is->plugin->eof(is);
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}
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int input_stream_buffer(struct input_stream *is)
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{
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if (is->plugin->buffer == NULL)
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return 0;
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return is->plugin->buffer(is);
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}
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