118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
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* Copyright (C) 2003-2010 The Music Player Daemon Project
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* 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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "input_stream.h"
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#include "input_registry.h"
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#include "input_plugin.h"
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#include "input/rewind_input_plugin.h"
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#include <glib.h>
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#include <assert.h>
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static inline GQuark
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input_quark(void)
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{
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return g_quark_from_static_string("input");
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}
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struct input_stream *
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input_stream_open(const char *url, GError **error_r)
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{
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GError *error = NULL;
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assert(error_r == NULL || *error_r == NULL);
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for (unsigned i = 0; input_plugins[i] != NULL; ++i) {
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const struct input_plugin *plugin = input_plugins[i];
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struct input_stream *is;
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if (!input_plugins_enabled[i])
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continue;
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is = plugin->open(url, &error);
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if (is != NULL) {
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assert(is->plugin != NULL);
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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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is = input_rewind_open(is);
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return is;
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} else if (error != NULL) {
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g_propagate_error(error_r, error);
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return NULL;
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}
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}
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g_set_error(error_r, input_quark(), 0, "Unrecognized URI");
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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, goffset offset, int whence,
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GError **error_r)
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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, error_r);
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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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GError **error_r)
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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, error_r);
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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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}
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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
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input_stream_buffer(struct input_stream *is, GError **error_r)
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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, error_r);
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}
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