output/alsa, pcm: rename "DSD over USB" to "DoP"

The standard has been renamed since the early draft that was
implemented in MPD.

1 files changed, 40 insertions, 0 deletions

diff --git a/src/pcm/PcmDop.hxx b/src/pcm/PcmDop.hxx
new file mode 100644
index 000000000..03161c456
--- /dev/null
+++ b/src/pcm/PcmDop.hxx
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2003-2014 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 MPD_PCM_DOP_HXX
+#define MPD_PCM_DOP_HXX
+
+#include "check.h"
+
+#include <stdint.h>
+#include <stddef.h>
+
+class PcmBuffer;
+template<typename T> struct ConstBuffer;
+
+/**
+ * Pack DSD 1 bit samples into (padded) 24 bit PCM samples for
+ * playback over USB, according to the DoP standard:
+ * http://dsd-guide.com/dop-open-standard
+ */
+ConstBuffer<uint32_t>
+pcm_dsd_to_dop(PcmBuffer &buffer, unsigned channels,
+	       ConstBuffer<uint8_t> src);
+
+#endif