pcm/PcmConvert: move the Domain instance to Domain.cxx

Rename pcm_convert_domain to pcm_domain.  Move it out so we can use it
without depending on the whole PcmConvert library.

Makefile.am

@@ -331,6 +331,7 @@ libevent_a_SOURCES = \
 # PCM library
 
 libpcm_a_SOURCES = \
+	src/pcm/Domain.cxx src/pcm/Domain.hxx \
 	src/pcm/Traits.hxx \
 	src/pcm/PcmBuffer.cxx src/pcm/PcmBuffer.hxx \
 	src/pcm/PcmExport.cxx src/pcm/PcmExport.hxx \

src/pcm/ChannelsConverter.cxx

@@ -20,7 +20,7 @@
 #include "config.h"
 #include "ChannelsConverter.hxx"
 #include "PcmChannels.hxx"
-#include "PcmConvert.hxx"
+#include "Domain.hxx"
 #include "util/ConstBuffer.hxx"
 #include "util/Error.hxx"
 
@@ -41,7 +41,7 @@ PcmChannelsConverter::Open(SampleFormat _format,
 		break;
 
 	default:
-		error.Format(pcm_convert_domain,
+		error.Format(pcm_domain,
 			     "PCM channel conversion for %s is not implemented",
 			     sample_format_to_string(format));
 		return false;

src/pcm/Domain.cxx

@@ -0,0 +1,23 @@
+/*
+ * 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 "Domain.hxx"
+#include "util/Domain.hxx"
+
+const Domain pcm_domain("pcm");

src/pcm/Domain.hxx

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+#ifndef PCM_DOMAIN_HXX
+#define PCM_DOMAIN_HXX
+
+class Domain;
+
+extern const Domain pcm_domain;
+
+#endif

src/pcm/FormatConverter.cxx

@@ -20,7 +20,7 @@
 #include "config.h"
 #include "FormatConverter.hxx"
 #include "PcmFormat.hxx"
-#include "PcmConvert.hxx"
+#include "Domain.hxx"
 #include "util/ConstBuffer.hxx"
 #include "util/Error.hxx"
 
@@ -93,7 +93,7 @@ PcmFormatConverter::Convert(ConstBuffer<void> src, Error &error)
 	}
 
 	if (result == nullptr) {
-		error.Format(pcm_convert_domain,
+		error.Format(pcm_domain,
 			     "PCM conversion from %s to %s is not implemented",
 			     sample_format_to_string(src_format),
 			     sample_format_to_string(dest_format));

src/pcm/PcmConvert.cxx

@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "PcmConvert.hxx"
+#include "Domain.hxx"
 #include "ConfiguredResampler.hxx"
 #include "AudioFormat.hxx"
 #include "util/ConstBuffer.hxx"
@@ -29,8 +30,6 @@
 #include <assert.h>
 #include <math.h>
 
-const Domain pcm_convert_domain("pcm_convert");
-
 bool
 pcm_convert_global_init(Error &error)
 {
@@ -131,7 +130,7 @@ PcmConvert::Convert(const void *src, size_t src_size,
 		auto d = dsd.ToFloat(format.channels,
 				     false, s);
 		if (d.IsNull()) {
-			error.Set(pcm_convert_domain,
+			error.Set(pcm_domain,
 				  "DSD to PCM conversion failed");
 			return nullptr;
 		}

src/pcm/PcmConvert.hxx

@@ -82,8 +82,6 @@ public:
 			    Error &error);
 };
 
-extern const Domain pcm_convert_domain;
-
 bool
 pcm_convert_global_init(Error &error);