1 files changed, 49 insertions, 0 deletions
diff --git a/src/common/includes/Audio/cw.h b/src/common/includes/Audio/cw.h
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+++ b/src/common/includes/Audio/cw.h
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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Matthias P. Braendli
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*/
+
+#ifndef __CW_H_
+#define __CW_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+// Setup the CW generator to create audio samples at the given
+// samplerate.
+void cw_psk31_init(unsigned int samplerate);
+
+// Append new CW or PSK31 text to transmit
+// CW/PSK31 audio centre frequency in Hz
+// if dit_duration == 0, message is sent in PSK31
+// otherwise it is sent in CW, with dit_duration in ms
+// returns 0 on failure, 1 on success
+int cw_psk31_push_message(const char* text, int frequency, int dit_duration);
+
+// Write the waveform into the buffer (stereo), both for cw and psk31
+size_t cw_psk31_fill_buffer(int16_t *buf, size_t bufsize);
+
+// Return 1 if the CW or PSK31 generator is running
+int cw_psk31_busy(void);
+
+#endif // __CW_H_
+