diff options
Diffstat (limited to 'gnuradio-core/src/lib/runtime/gr_buffer.h')
| -rw-r--r-- | gnuradio-core/src/lib/runtime/gr_buffer.h | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/gnuradio-core/src/lib/runtime/gr_buffer.h b/gnuradio-core/src/lib/runtime/gr_buffer.h index 207bfe7c5..e5725d386 100644 --- a/gnuradio-core/src/lib/runtime/gr_buffer.h +++ b/gnuradio-core/src/lib/runtime/gr_buffer.h @@ -1,6 +1,6 @@ /* -*- c++ -*- */ /* - * Copyright 2004,2009 Free Software Foundation, Inc. + * Copyright 2004,2009,2010,2011 Free Software Foundation, Inc. * * This file is part of GNU Radio * @@ -26,6 +26,8 @@ #include <gr_runtime_types.h> #include <boost/weak_ptr.hpp> #include <gruel/thread.h> +#include <gruel/pmt.h> +#include <deque> class gr_vmcircbuf; @@ -88,6 +90,26 @@ class gr_buffer { gruel::mutex *mutex() { return &d_mutex; } + uint64_t nitems_written() { return d_abs_write_offset; } + + + /*! + * \brief Adds a new tag to the buffer. + * + * \param tag a PMT tuple containing the new tag + */ + void add_item_tag(const pmt::pmt_t &tag); + + /*! + * \brief Removes all tags before \p max_time from buffer + * + * \param max_time the time (item number) to trim up until. + */ + void prune_tags(uint64_t max_time); + + std::deque<pmt::pmt_t>::iterator get_tags_begin() { return d_item_tags.begin(); } + std::deque<pmt::pmt_t>::iterator get_tags_end() { return d_item_tags.end(); } + // ------------------------------------------------------------------------- private: @@ -106,11 +128,15 @@ class gr_buffer { boost::weak_ptr<gr_block> d_link; // block that writes to this buffer // - // The mutex protects d_write_index, d_done and the d_read_index's in the buffer readers. + // The mutex protects d_write_index, d_abs_write_offset, d_done, d_item_tags + // and the d_read_index's and d_abs_read_offset's in the buffer readers. // gruel::mutex d_mutex; unsigned int d_write_index; // in items [0,d_bufsize) + uint64_t d_abs_write_offset; // num items written since the start bool d_done; + std::deque<pmt::pmt_t> d_item_tags; + uint64_t d_last_min_items_read; unsigned index_add (unsigned a, unsigned b) @@ -220,11 +246,31 @@ class gr_buffer_reader { gruel::mutex *mutex() { return d_buffer->mutex(); } + uint64_t nitems_read() { return d_abs_read_offset; } + /*! * \brief Return the block that reads via this reader. + * */ gr_block_sptr link() { return gr_block_sptr(d_link); } + + /*! + * \brief Given a [start,end), returns a vector all tags in the range. + * + * Get a vector of tags in given range. Range of counts is from start to end-1. + * + * Tags are tuples of: + * (item count, source id, key, value) + * + * \param v a vector reference to return tags into + * \param abs_start a uint64 count of the start of the range of interest + * \param abs_end a uint64 count of the end of the range of interest + */ + void get_tags_in_range(std::vector<pmt::pmt_t> &v, + uint64_t abs_start, + uint64_t abs_end); + // ------------------------------------------------------------------------- private: @@ -236,6 +282,7 @@ class gr_buffer_reader { gr_buffer_sptr d_buffer; unsigned int d_read_index; // in items [0,d->buffer.d_bufsize) + uint64_t d_abs_read_offset; // num items seen since the start boost::weak_ptr<gr_block> d_link; // block that reads via this buffer reader //! constructor is private. Use gr_buffer::add_reader to create instances |