test/{read_conf,run_filter}: convert to C++

test/run_filter.cxx

@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2003-2013 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 "conf.h"
+
+extern "C" {
+#include "audio_parser.h"
+}
+
+#include "audio_format.h"
+#include "filter_plugin.h"
+#include "pcm_volume.h"
+#include "mixer_control.h"
+#include "stdbin.h"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+bool
+mixer_set_volume(G_GNUC_UNUSED struct mixer *mixer,
+		 G_GNUC_UNUSED unsigned volume, G_GNUC_UNUSED GError **error_r)
+{
+	return true;
+}
+
+static void
+my_log_func(const gchar *log_domain, G_GNUC_UNUSED GLogLevelFlags log_level,
+	    const gchar *message, G_GNUC_UNUSED gpointer user_data)
+{
+	if (log_domain != NULL)
+		g_printerr("%s: %s\n", log_domain, message);
+	else
+		g_printerr("%s\n", message);
+}
+
+static const struct config_param *
+find_named_config_block(const char *block, const char *name)
+{
+	const struct config_param *param = NULL;
+
+	while ((param = config_get_next_param(block, param)) != NULL) {
+		const char *current_name =
+			config_get_block_string(param, "name", NULL);
+		if (current_name != NULL && strcmp(current_name, name) == 0)
+			return param;
+	}
+
+	return NULL;
+}
+
+static struct filter *
+load_filter(const char *name)
+{
+	const struct config_param *param;
+	struct filter *filter;
+	GError *error = NULL;
+
+	param = find_named_config_block("filter", name);
+	if (param == NULL) {
+		g_printerr("No such configured filter: %s\n", name);
+		return nullptr;
+	}
+
+	filter = filter_configured_new(param, &error);
+	if (filter == NULL) {
+		g_printerr("Failed to load filter: %s\n", error->message);
+		g_error_free(error);
+		return NULL;
+	}
+
+	return filter;
+}
+
+int main(int argc, char **argv)
+{
+	struct audio_format audio_format;
+	struct audio_format_string af_string;
+	bool success;
+	GError *error = NULL;
+	struct filter *filter;
+	const struct audio_format *out_audio_format;
+	char buffer[4096];
+
+	if (argc < 3 || argc > 4) {
+		g_printerr("Usage: run_filter CONFIG NAME [FORMAT] <IN\n");
+		return 1;
+	}
+
+	audio_format_init(&audio_format, 44100, SAMPLE_FORMAT_S16, 2);
+
+	/* initialize GLib */
+
+	g_thread_init(NULL);
+	g_log_set_default_handler(my_log_func, NULL);
+
+	/* read configuration file (mpd.conf) */
+
+	config_global_init();
+	success = config_read_file(argv[1], &error);
+	if (!success) {
+		g_printerr("%s:", error->message);
+		g_error_free(error);
+		return 1;
+	}
+
+	/* parse the audio format */
+
+	if (argc > 3) {
+		success = audio_format_parse(&audio_format, argv[3],
+					     false, &error);
+		if (!success) {
+			g_printerr("Failed to parse audio format: %s\n",
+				   error->message);
+			g_error_free(error);
+			return 1;
+		}
+	}
+
+	/* initialize the filter */
+
+	filter = load_filter(argv[2]);
+	if (filter == NULL)
+		return 1;
+
+	/* open the filter */
+
+	out_audio_format = filter_open(filter, &audio_format, &error);
+	if (out_audio_format == NULL) {
+		g_printerr("Failed to open filter: %s\n", error->message);
+		g_error_free(error);
+		filter_free(filter);
+		return 1;
+	}
+
+	g_printerr("audio_format=%s\n",
+		   audio_format_to_string(out_audio_format, &af_string));
+
+	/* play */
+
+	while (true) {
+		ssize_t nbytes;
+		size_t length;
+		const void *dest;
+
+		nbytes = read(0, buffer, sizeof(buffer));
+		if (nbytes <= 0)
+			break;
+
+		dest = filter_filter(filter, buffer, (size_t)nbytes,
+				     &length, &error);
+		if (dest == NULL) {
+			g_printerr("Filter failed: %s\n", error->message);
+			filter_close(filter);
+			filter_free(filter);
+			return 1;
+		}
+
+		nbytes = write(1, dest, length);
+		if (nbytes < 0) {
+			g_printerr("Failed to write: %s\n", g_strerror(errno));
+			filter_close(filter);
+			filter_free(filter);
+			return 1;
+		}
+	}
+
+	/* cleanup and exit */
+
+	filter_close(filter);
+	filter_free(filter);
+
+	config_global_finish();
+
+	return 0;
+}