From 461ece56b36a44b2405282630157739c7f9a26ba Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Fri, 14 Dec 2012 16:10:30 -0500
Subject: blocks: moving file metadata sink/source to gr-blocks.
---
gr-blocks/lib/file_meta_source_impl.h | 89 +++++++++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)
create mode 100644 gr-blocks/lib/file_meta_source_impl.h
(limited to 'gr-blocks/lib/file_meta_source_impl.h')
diff --git a/gr-blocks/lib/file_meta_source_impl.h b/gr-blocks/lib/file_meta_source_impl.h
new file mode 100644
index 0000000000..ca7ddc6e10
--- /dev/null
+++ b/gr-blocks/lib/file_meta_source_impl.h
@@ -0,0 +1,89 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_BLOCKS_FILE_META_SOURCE_IMPL_H
+#define INCLUDED_BLOCKS_FILE_META_SOURCE_IMPL_H
+
+#include <blocks/file_meta_source.h>
+#include <gr_tags.h>
+#include <gruel/pmt.h>
+#include <gruel/thread.h>
+
+#include <blocks/file_meta_sink.h>
+
+using namespace pmt;
+
+namespace gr {
+ namespace blocks {
+
+ class file_meta_source_impl : public file_meta_source
+ {
+ private:
+ enum meta_state_t {
+ STATE_INLINE=0,
+ STATE_DETACHED
+ };
+
+ size_t d_itemsize;
+ double d_samp_rate;
+ pmt_t d_time_stamp;
+ size_t d_seg_size;
+ bool d_updated;
+ bool d_repeat;
+
+ gruel::mutex d_mutex;
+ FILE *d_new_fp, *d_new_hdr_fp;
+ FILE *d_fp, *d_hdr_fp;
+ meta_state_t d_state;
+
+ std::vector<gr_tag_t> d_tags;
+
+ protected:
+ bool _open(FILE **fp, const char *filename);
+ bool read_header(pmt_t &hdr, pmt_t &extras);
+ void parse_header(pmt_t hdr, uint64_t offset,
+ std::vector<gr_tag_t> &tags);
+ void parse_extras(pmt_t extras, uint64_t offset,
+ std::vector<gr_tag_t> &tags);
+
+ public:
+ file_meta_source_impl(const std::string &filename,
+ bool repeat=false,
+ bool detached_header=false,
+ const std::string &hdr_filename="");
+
+ ~file_meta_source_impl();
+
+ bool open(const std::string &filename,
+ const std::string &hdr_filename="");
+ void close();
+ void do_update();
+
+ int work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+ };
+
+ } /* namespace blocks */
+} /* namespace gr */
+
+#endif /* INCLUDED_BLOCKS_FILE_META_SOURCE_IMPL_H */
--
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