path: root/test/read_tags.cxx

/*
 * Copyright (C) 2003-2011 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 "IOThread.hxx"
#include "DecoderList.hxx"
#include "DecoderAPI.hxx"
#include "InputInit.hxx"
#include "InputStream.hxx"
#include "AudioFormat.hxx"
#include "TagHandler.hxx"
#include "TagId3.hxx"
#include "ApeTag.hxx"

#include <glib.h>

#include <assert.h>
#include <unistd.h>
#include <stdlib.h>

#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif

void
decoder_initialized(gcc_unused struct decoder *decoder,
		    gcc_unused const AudioFormat audio_format,
		    gcc_unused bool seekable,
		    gcc_unused float total_time)
{
}

enum decoder_command
decoder_get_command(gcc_unused struct decoder *decoder)
{
	return DECODE_COMMAND_NONE;
}

void decoder_command_finished(gcc_unused struct decoder *decoder)
{
}

double decoder_seek_where(gcc_unused struct decoder *decoder)
{
	return 1.0;
}

void decoder_seek_error(gcc_unused struct decoder *decoder)
{
}

size_t
decoder_read(gcc_unused struct decoder *decoder,
	     struct input_stream *is,
	     void *buffer, size_t length)
{
	return input_stream_lock_read(is, buffer, length, NULL);
}

void
decoder_timestamp(gcc_unused struct decoder *decoder,
		  gcc_unused double t)
{
}

enum decoder_command
decoder_data(gcc_unused struct decoder *decoder,
	     gcc_unused struct input_stream *is,
	     const void *data, size_t datalen,
	     gcc_unused uint16_t bit_rate)
{
	gcc_unused ssize_t nbytes = write(1, data, datalen);
	return DECODE_COMMAND_NONE;
}

enum decoder_command
decoder_tag(gcc_unused struct decoder *decoder,
	    gcc_unused struct input_stream *is,
	    gcc_unused Tag &&tag)
{
	return DECODE_COMMAND_NONE;
}

void
decoder_replay_gain(gcc_unused struct decoder *decoder,
		    gcc_unused const struct replay_gain_info *replay_gain_info)
{
}

void
decoder_mixramp(gcc_unused struct decoder *decoder,
		char *mixramp_start, char *mixramp_end)
{
	g_free(mixramp_start);
	g_free(mixramp_end);
}

static bool empty = true;

static void
print_duration(unsigned seconds, gcc_unused void *ctx)
{
	g_print("duration=%d\n", seconds);
}

static void
print_tag(enum tag_type type, const char *value, gcc_unused void *ctx)
{
	g_print("[%s]=%s\n", tag_item_names[type], value);
	empty = false;
}

static void
print_pair(const char *name, const char *value, gcc_unused void *ctx)
{
	g_print("\"%s\"=%s\n", name, value);
}

static const struct tag_handler print_handler = {
	print_duration,
	print_tag,
	print_pair,
};

int main(int argc, char **argv)
{
	GError *error = NULL;
	const char *decoder_name, *path;
	const struct decoder_plugin *plugin;

#ifdef HAVE_LOCALE_H
	/* initialize locale */
	setlocale(LC_CTYPE,"");
#endif

	if (argc != 3) {
		g_printerr("Usage: read_tags DECODER FILE\n");
		return 1;
	}

	decoder_name = argv[1];
	path = argv[2];

#if !GLIB_CHECK_VERSION(2,32,0)
	g_thread_init(NULL);
#endif

	io_thread_init();
	if (!io_thread_start(&error)) {
		g_warning("%s", error->message);
		g_error_free(error);
		return EXIT_FAILURE;
	}

	if (!input_stream_global_init(&error)) {
		g_warning("%s", error->message);
		g_error_free(error);
		return 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;
	}

	bool success = decoder_plugin_scan_file(plugin, path,
						&print_handler, NULL);
	if (!success && plugin->scan_stream != NULL) {
		Mutex mutex;
		Cond cond;

		struct input_stream *is =
			input_stream_open(path, mutex, cond, &error);

		if (is == NULL) {
			g_printerr("Failed to open %s: %s\n",
				   path, error->message);
			g_error_free(error);
			return 1;
		}

		mutex.lock();

		while (!is->ready) {
			cond.wait(mutex);
			input_stream_update(is);
		}

		if (!input_stream_check(is, &error)) {
			mutex.unlock();

			g_printerr("Failed to read %s: %s\n",
				   path, error->message);
			g_error_free(error);

			return EXIT_FAILURE;
		}

		mutex.unlock();

		success = decoder_plugin_scan_stream(plugin, is,
						     &print_handler, NULL);
		input_stream_close(is);
	}

	decoder_plugin_deinit_all();
	input_stream_global_finish();
	io_thread_deinit();

	if (!success) {
		g_printerr("Failed to read tags\n");
		return 1;
	}

	if (empty) {
		tag_ape_scan2(path, &print_handler, NULL);
		if (empty)
			tag_id3_scan(path, &print_handler, NULL);
	}

	return 0;
}