From cac3c159bc84d5163c87a40383d3eda64a4c9f69 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 29 Jul 2013 07:56:40 +0200
Subject: pcm_dsd: convert to C++
---
src/pcm/PcmDsd.cxx | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
create mode 100644 src/pcm/PcmDsd.cxx
(limited to 'src/pcm/PcmDsd.cxx')
diff --git a/src/pcm/PcmDsd.cxx b/src/pcm/PcmDsd.cxx
new file mode 100644
index 000000000..fb2dfd033
--- /dev/null
+++ b/src/pcm/PcmDsd.cxx
@@ -0,0 +1,85 @@
+/*
+ * 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 "PcmDsd.hxx"
+#include "dsd2pcm/dsd2pcm.h"
+
+#include <glib.h>
+
+#include <algorithm>
+
+#include <string.h>
+
+PcmDsd::PcmDsd()
+{
+ pcm_buffer_init(&buffer);
+
+ std::fill_n(dsd2pcm, G_N_ELEMENTS(dsd2pcm), nullptr);
+}
+
+PcmDsd::~PcmDsd()
+{
+ pcm_buffer_deinit(&buffer);
+
+ for (unsigned i = 0; i < G_N_ELEMENTS(dsd2pcm); ++i)
+ if (dsd2pcm[i] != nullptr)
+ dsd2pcm_destroy(dsd2pcm[i]);
+}
+
+void
+PcmDsd::Reset()
+{
+ for (unsigned i = 0; i < G_N_ELEMENTS(dsd2pcm); ++i)
+ if (dsd2pcm[i] != nullptr)
+ dsd2pcm_reset(dsd2pcm[i]);
+}
+
+const float *
+PcmDsd::ToFloat(unsigned channels, bool lsbfirst,
+ const uint8_t *src, size_t src_size,
+ size_t *dest_size_r)
+{
+ assert(src != nullptr);
+ assert(src_size > 0);
+ assert(src_size % channels == 0);
+ assert(channels <= G_N_ELEMENTS(dsd2pcm));
+
+ const unsigned num_samples = src_size;
+ const unsigned num_frames = src_size / channels;
+
+ float *dest;
+ const size_t dest_size = num_samples * sizeof(*dest);
+ *dest_size_r = dest_size;
+ dest = (float *)pcm_buffer_get(&buffer, dest_size);
+
+ for (unsigned c = 0; c < channels; ++c) {
+ if (dsd2pcm[c] == nullptr) {
+ dsd2pcm[c] = dsd2pcm_init();
+ if (dsd2pcm[c] == nullptr)
+ return nullptr;
+ }
+
+ dsd2pcm_translate(dsd2pcm[c], num_frames,
+ src + c, channels,
+ lsbfirst, dest + c, channels);
+ }
+
+ return dest;
+}
--
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