SSTV transmit beta (320x256 24bpp Scottie 2 only)

firmware/baseband/proc_sstvtx.hpp

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * 
+ * This file is part of PortaPack.
+ *
+ * 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, 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __PROC_SSTV_TX_H__
+#define __PROC_SSTV_TX_H__
+
+#include "portapack_shared_memory.hpp"
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "sstv.hpp"
+
+using namespace sstv;
+
+class SSTVTXProcessor : public BasebandProcessor {
+public:
+	void execute(const buffer_c8_t& buffer) override;
+	
+	void on_message(const Message* const p) override;
+
+private:
+
+	// 1900 300ms
+	// 1200 10ms
+	// 1900 300ms
+	const std::pair<uint32_t, uint32_t> calibration_sequence[3] = {
+		{ SSTV_F2D(1900), SSTV_MS2S(300) },
+		{ SSTV_F2D(1200), SSTV_MS2S(10) },
+		{ SSTV_F2D(1900), SSTV_MS2S(300) }
+	};
+	
+	enum state_t {
+		STATE_CALIBRATION = 0,
+		STATE_VIS,
+		STATE_START,
+		STATE_PIXELS
+	};
+	
+	state_t state { };
+	
+	bool configured { false };
+	
+	BasebandThread baseband_thread { 3072000, this, NORMALPRIO + 20, baseband::Direction::Transmit };
+
+	uint32_t vis_code_sequence[10] { };
+	sstv_scanline scanline_buffer[2] { };
+	uint8_t buffer_flip { 0 }, substep { 0 };
+	
+	uint8_t vis_code { };
+	uint32_t pixel_duration { };
+
+	sstv_scanline * current_scanline { };
+	
+	uint8_t pixel_luma { };
+	uint32_t fm_delta { 0 };
+	uint32_t tone_phase { 0 };
+	uint32_t tone_delta { 0 };
+    uint32_t pixel_index { 0 };
+    uint32_t sample_count { 0 };
+	uint32_t phase { 0 }, sphase { 0 };
+	int32_t tone_sample { 0 }, delta { 0 };
+	int8_t re { 0 }, im { 0 };
+	
+	bool asked { false };
+	
+	RequestSignalMessage sig_message { RequestSignalMessage::Signal::FillRequest };
+};
+
+#endif