cosmetic: uhd: Move smpl_buf out of UHDDevice, move UHDDevice class definition to .h
* move class definition to .h file, like we do for other devices.
* move smpl_buf class to a different file inside uhd/.
* Preparation work to have smpl_buf being used in a generic way for
devices other than UHD (LMS).
Change-Id: Ib4594320da9bb7f6e9f52e7d70d11ecd11106aae
diff --git a/Transceiver52M/device/uhd/smpl_buf.h b/Transceiver52M/device/uhd/smpl_buf.h
new file mode 100644
index 0000000..6af97c2
--- /dev/null
+++ b/Transceiver52M/device/uhd/smpl_buf.h
@@ -0,0 +1,94 @@
+/*
+ * Sample Buffer - Allows reading and writing of timed samples
+ *
+ * Copyright 2010,2011 Free Software Foundation, Inc.
+ * Copyright (C) 2015 Ettus Research LLC
+ * Copyright 2019 sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ *
+ * Author: Tom Tsou <tom.tsou@ettus.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * See the COPYING file in the main directory for details.
+ */
+
+#pragma once
+
+#include <unistd.h>
+#include <uhd/types/time_spec.hpp>
+
+#include "radioDevice.h"
+
+/*
+ Sample Buffer - Allows reading and writing of timed samples using osmo-trx
+ or UHD style timestamps. Time conversions are handled
+ internally or accessable through the static convert calls.
+*/
+class smpl_buf {
+public:
+ /** Sample buffer constructor
+ @param len number of 32-bit samples the buffer should hold
+ @param rate sample clockrate
+ @param timestamp
+ */
+ smpl_buf(size_t len, double rate);
+ ~smpl_buf();
+
+ /** Query number of samples available for reading
+ @param timestamp time of first sample
+ @return number of available samples or error
+ */
+ ssize_t avail_smpls(TIMESTAMP timestamp) const;
+ ssize_t avail_smpls(uhd::time_spec_t timestamp) const;
+
+ /** Read and write
+ @param buf pointer to buffer
+ @param len number of samples desired to read or write
+ @param timestamp time of first stample
+ @return number of actual samples read or written or error
+ */
+ ssize_t read(void *buf, size_t len, TIMESTAMP timestamp);
+ ssize_t read(void *buf, size_t len, uhd::time_spec_t timestamp);
+ ssize_t write(void *buf, size_t len, TIMESTAMP timestamp);
+ ssize_t write(void *buf, size_t len, uhd::time_spec_t timestamp);
+
+ /** Buffer status string
+ @return a formatted string describing internal buffer state
+ */
+ std::string str_status(size_t ts) const;
+
+ /** Formatted error string
+ @param code an error code
+ @return a formatted error string
+ */
+ static std::string str_code(ssize_t code);
+
+ enum err_code {
+ ERROR_TIMESTAMP = -1,
+ ERROR_READ = -2,
+ ERROR_WRITE = -3,
+ ERROR_OVERFLOW = -4
+ };
+
+private:
+ uint32_t *data;
+ size_t buf_len;
+
+ double clk_rt;
+
+ TIMESTAMP time_start;
+ TIMESTAMP time_end;
+
+ size_t data_start;
+ size_t data_end;
+};