merge from gr36_ni branch

1 files changed, 89 insertions, 0 deletions

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 000000000..ca7ddc6e1
--- /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 */