test: added test program which reads tags from a file

1 files changed, 159 insertions, 0 deletions

diff --git a/test/read_tags.c b/test/read_tags.c
new file mode 100644
index 000000000..cdee3722f
--- /dev/null
+++ b/test/read_tags.c
@@ -0,0 +1,159 @@
+/*
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "decoder_list.h"
+#include "decoder_api.h"
+#include "input_stream.h"
+#include "audio_format.h"
+#include "pcm_volume.h"
+#include "tag_ape.h"
+#include "tag_id3.h"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <unistd.h>
+
+/**
+ * No-op dummy.
+ */
+void
+pcm_volume(G_GNUC_UNUSED void *buffer, G_GNUC_UNUSED int length,
+	   G_GNUC_UNUSED const struct audio_format *format,
+	   G_GNUC_UNUSED int volume)
+{
+}
+
+void
+decoder_initialized(G_GNUC_UNUSED struct decoder *decoder,
+		    G_GNUC_UNUSED const struct audio_format *audio_format,
+		    G_GNUC_UNUSED bool seekable,
+		    G_GNUC_UNUSED float total_time)
+{
+}
+
+char *decoder_get_uri(G_GNUC_UNUSED struct decoder *decoder)
+{
+	return NULL;
+}
+
+enum decoder_command
+decoder_get_command(G_GNUC_UNUSED struct decoder *decoder)
+{
+	return DECODE_COMMAND_NONE;
+}
+
+void decoder_command_finished(G_GNUC_UNUSED struct decoder *decoder)
+{
+}
+
+double decoder_seek_where(G_GNUC_UNUSED struct decoder *decoder)
+{
+	return 1.0;
+}
+
+void decoder_seek_error(G_GNUC_UNUSED struct decoder *decoder)
+{
+}
+
+size_t
+decoder_read(G_GNUC_UNUSED struct decoder *decoder,
+	     struct input_stream *is,
+	     void *buffer, size_t length)
+{
+	return input_stream_read(is, buffer, length);
+}
+
+enum decoder_command
+decoder_data(G_GNUC_UNUSED struct decoder *decoder,
+	     G_GNUC_UNUSED struct input_stream *is,
+	     const void *data, size_t datalen,
+	     G_GNUC_UNUSED float data_time, G_GNUC_UNUSED uint16_t bit_rate,
+	     G_GNUC_UNUSED struct replay_gain_info *replay_gain_info)
+{
+	write(1, data, datalen);
+	return DECODE_COMMAND_NONE;
+}
+
+enum decoder_command
+decoder_tag(G_GNUC_UNUSED struct decoder *decoder,
+	    G_GNUC_UNUSED struct input_stream *is,
+	    G_GNUC_UNUSED const struct tag *tag)
+{
+	return DECODE_COMMAND_NONE;
+}
+
+static void
+print_tag(const struct tag *tag)
+{
+	if (tag->time >= 0)
+		g_print("time=%d\n", tag->time);
+
+	for (unsigned i = 0; i < tag->num_items; ++i)
+		g_print("%s=%s\n",
+			tag_item_names[tag->items[i]->type],
+			tag->items[i]->value);
+}
+
+int main(int argc, char **argv)
+{
+	const char *decoder_name, *path;
+	const struct decoder_plugin *plugin;
+	struct tag *tag;
+	bool empty;
+
+	if (argc != 3) {
+		g_printerr("Usage: read_tags DECODER FILE\n");
+		return 1;
+	}
+
+	decoder_name = argv[1];
+	path = argv[2];
+
+	decoder_plugin_init_all();
+
+	plugin = decoder_plugin_from_name(decoder_name);
+	if (plugin == NULL) {
+		g_printerr("No such decoder: %s\n", decoder_name);
+		return 1;
+	}
+
+	tag = decoder_plugin_tag_dup(plugin, path);
+	decoder_plugin_deinit_all();
+	if (tag == NULL) {
+		g_printerr("Failed to read tags\n");
+		return 1;
+	}
+
+	print_tag(tag);
+
+	empty = tag_is_empty(tag);
+	tag_free(tag);
+
+	if (empty) {
+		tag = tag_ape_load(path);
+		if (tag == NULL)
+			tag = tag_id3_load(path);
+		if (tag != NULL) {
+			print_tag(tag);
+			tag_free(tag);
+		}
+	}
+
+	return 0;
+}