decoder/audiofile: add "noexcept"

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -38,7 +38,7 @@
 static constexpr Domain audiofile_domain("audiofile");
 
 static void
-audiofile_error_func(long, const char *msg)
+audiofile_error_func(long, const char *msg) noexcept
 {
 	LogWarning(audiofile_domain, msg);
 }
@@ -54,7 +54,7 @@ struct AudioFileInputStream {
 	DecoderClient *const client;
 	InputStream &is;
 
-	size_t Read(void *buffer, size_t size) {
+	size_t Read(void *buffer, size_t size) noexcept {
 		/* libaudiofile does not like partial reads at all,
 		   and will abort playback; therefore always force full
 		   reads */
@@ -73,7 +73,7 @@ audiofile_get_duration(AFfilehandle fh) noexcept
 }
 
 static ssize_t
-audiofile_file_read(AFvirtualfile *vfile, void *data, size_t length)
+audiofile_file_read(AFvirtualfile *vfile, void *data, size_t length) noexcept
 {
 	AudioFileInputStream &afis = *(AudioFileInputStream *)vfile->closure;
 
@@ -81,7 +81,7 @@ audiofile_file_read(AFvirtualfile *vfile, void *data, size_t length)
 }
 
 static AFfileoffset
-audiofile_file_length(AFvirtualfile *vfile)
+audiofile_file_length(AFvirtualfile *vfile) noexcept
 {
 	AudioFileInputStream &afis = *(AudioFileInputStream *)vfile->closure;
 	InputStream &is = afis.is;
@@ -90,7 +90,7 @@ audiofile_file_length(AFvirtualfile *vfile)
 }
 
 static AFfileoffset
-audiofile_file_tell(AFvirtualfile *vfile)
+audiofile_file_tell(AFvirtualfile *vfile) noexcept
 {
 	AudioFileInputStream &afis = *(AudioFileInputStream *)vfile->closure;
 	InputStream &is = afis.is;
@@ -99,7 +99,7 @@ audiofile_file_tell(AFvirtualfile *vfile)
 }
 
 static void
-audiofile_file_destroy(AFvirtualfile *vfile)
+audiofile_file_destroy(AFvirtualfile *vfile) noexcept
 {
 	assert(vfile->closure != nullptr);
 
@@ -108,7 +108,7 @@ audiofile_file_destroy(AFvirtualfile *vfile)
 
 static AFfileoffset
 audiofile_file_seek(AFvirtualfile *vfile, AFfileoffset _offset,
-		    int is_relative)
+		    int is_relative) noexcept
 {
 	AudioFileInputStream &afis = *(AudioFileInputStream *)vfile->closure;
 	InputStream &is = afis.is;
@@ -127,7 +127,7 @@ audiofile_file_seek(AFvirtualfile *vfile, AFfileoffset _offset,
 }
 
 static AFvirtualfile *
-setup_virtual_fops(AudioFileInputStream &afis)
+setup_virtual_fops(AudioFileInputStream &afis) noexcept
 {
 	AFvirtualfile *vf = new AFvirtualfile();
 	vf->closure = &afis;
@@ -140,8 +140,9 @@ setup_virtual_fops(AudioFileInputStream &afis)
 	return vf;
 }
 
+gcc_const
 static SampleFormat
-audiofile_bits_to_sample_format(int bits)
+audiofile_bits_to_sample_format(int bits) noexcept
 {
 	switch (bits) {
 	case 8:
@@ -161,7 +162,7 @@ audiofile_bits_to_sample_format(int bits)
 }
 
 static SampleFormat
-audiofile_setup_sample_format(AFfilehandle af_fp)
+audiofile_setup_sample_format(AFfilehandle af_fp) noexcept
 {
 	int fs, bits;