FT8 demod: test with .wav files

2026-06-25 04:53:27 -04:00 · 2023-01-18 23:00:59 +01:00
parent d6cafa08c5
commit 0d77b37ec1
21 changed files with 311 additions and 133 deletions
@@ -0,0 +1,51 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2023 Edouard Griffiths, F4EXB                                   //
+//                                                                               //
+// 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 as version 3 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 V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <QMutexLocker>
+
+#include "ft8demodsettings.h"
+#include "ft8buffer.h"
+
+FT8Buffer::FT8Buffer() :
+    m_bufferSize(FT8DemodSettings::m_ft8SampleRate*15),
+    m_sampleIndex(0)
+{
+    m_buffer = new int16_t[2*m_bufferSize];
+}
+
+FT8Buffer::~FT8Buffer()
+{
+    delete[] m_buffer;
+}
+
+void FT8Buffer::feed(int16_t sample)
+{
+    QMutexLocker mlock(&m_mutex);
+    m_buffer[m_sampleIndex] = sample;
+    m_buffer[m_sampleIndex + m_bufferSize] = sample;
+    m_sampleIndex++;
+
+    if (m_sampleIndex == m_bufferSize) {
+        m_sampleIndex = 0;
+    }
+}
+
+void FT8Buffer::getCurrentBuffer(int16_t *bufferCopy)
+{
+    QMutexLocker mlock(&m_mutex);
+    std::copy(&m_buffer[m_sampleIndex], &m_buffer[m_sampleIndex + m_bufferSize], bufferCopy);
+}