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-rw-r--r--src/pcm/GlueResampler.cxx94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/pcm/GlueResampler.cxx b/src/pcm/GlueResampler.cxx
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+++ b/src/pcm/GlueResampler.cxx
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+/*
+ * 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 "GlueResampler.hxx"
+#include "PcmConvert.hxx"
+#include "PcmFormat.hxx"
+#include "util/ConstBuffer.hxx"
+#include "util/Error.hxx"
+
+bool
+GluePcmResampler::Open(AudioFormat _src_format, unsigned _new_sample_rate,
+ gcc_unused Error &error)
+{
+ src_format = _src_format;
+ new_sample_rate = _new_sample_rate;
+
+ return true;
+}
+
+void
+GluePcmResampler::Close()
+{
+ resampler.Reset();
+}
+
+ConstBuffer<void>
+GluePcmResampler::Resample(ConstBuffer<void> src, Error &error)
+{
+ const void *result;
+ size_t size;
+
+ switch (src_format.format) {
+ case SampleFormat::S16:
+ result = resampler.Resample16(src_format.channels,
+ src_format.sample_rate,
+ (const int16_t *)src.data,
+ src.size,
+ new_sample_rate, &size,
+ error);
+ break;
+
+ case SampleFormat::S24_P32:
+ result = resampler.Resample24(src_format.channels,
+ src_format.sample_rate,
+ (const int32_t *)src.data,
+ src.size,
+ new_sample_rate, &size,
+ error);
+ break;
+
+ case SampleFormat::S32:
+ result = resampler.Resample24(src_format.channels,
+ src_format.sample_rate,
+ (const int32_t *)src.data,
+ src.size,
+ new_sample_rate, &size,
+ error);
+ break;
+
+ case SampleFormat::FLOAT:
+ result = resampler.ResampleFloat(src_format.channels,
+ src_format.sample_rate,
+ (const float *)src.data,
+ src.size,
+ new_sample_rate, &size,
+ error);
+ break;
+
+ default:
+ error.Format(pcm_convert_domain,
+ "Resampling %s is not implemented",
+ sample_format_to_string(src_format.format));
+ return nullptr;
+ }
+
+ return { result, size };
+}