mirror of https://gerrit.osmocom.org/libusrp
132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2003,2009 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _FUSB_LIBUSB1_H_
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#define _FUSB_LIBUSB1_H_
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#include <fusb.h>
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#include <list>
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struct libusb_transfer;
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struct libusb_context;
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class fusb_ephandle_libusb1;
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/*!
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* \brief libusb1 implementation of fusb_devhandle
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*/
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class fusb_devhandle_libusb1 : public fusb_devhandle
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{
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private:
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std::list<libusb_transfer*> d_pending_rqsts;
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libusb_context *d_ctx;
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void pending_add (struct libusb_transfer *lut);
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struct libusb_transfer * pending_get ();
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bool d_teardown;
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public:
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// CREATORS
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fusb_devhandle_libusb1 (libusb_device_handle *udh, libusb_context *ctx);
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virtual ~fusb_devhandle_libusb1 ();
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// MANIPULATORS
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virtual fusb_ephandle *make_ephandle (int endpoint, bool input_p,
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int block_size = 0, int nblocks = 0);
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// internal use only
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bool _submit_lut (libusb_transfer *);
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bool _cancel_lut (libusb_transfer *);
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void _cancel_pending_rqsts (fusb_ephandle_libusb1 *eph);
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bool _reap (bool ok_to_block_p);
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void _wait_for_completion ();
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// accessors to work from callback context
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bool pending_remove (struct libusb_transfer *lut);
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inline bool _teardown() { return d_teardown; }
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};
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/*!
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* \brief libusb1 implementation of fusb_ephandle
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*/
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class fusb_ephandle_libusb1 : public fusb_ephandle
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{
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private:
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fusb_devhandle_libusb1 *d_devhandle;
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std::list<libusb_transfer*> d_free_list;
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std::list<libusb_transfer*> d_completed_list;
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libusb_transfer *d_write_work_in_progress;
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unsigned char *d_write_buffer;
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libusb_transfer *d_read_work_in_progress;
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unsigned char *d_read_buffer;
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unsigned char *d_read_buffer_end;
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libusb_transfer *get_write_work_in_progress ();
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void reap_complete_writes ();
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bool reload_read_buffer ();
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bool submit_lut (libusb_transfer *lut);
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public:
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// CREATORS
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fusb_ephandle_libusb1 (fusb_devhandle_libusb1 *dh, int endpoint, bool input_p,
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int block_size = 0, int nblocks = 0);
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virtual ~fusb_ephandle_libusb1 ();
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// MANIPULATORS
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virtual bool start (); //!< begin streaming i/o
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virtual bool stop (); //!< stop streaming i/o
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/*!
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* \returns \p nbytes if write was successfully enqueued, else -1.
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* Will block if no free buffers available.
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*/
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virtual int write (const void *buffer, int nbytes);
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/*!
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* \returns number of bytes read or -1 if error.
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* number of bytes read will be <= nbytes.
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* Will block if no input available.
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*/
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virtual int read (void *buffer, int nbytes);
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/*
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* block until all outstanding writes have completed
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*/
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virtual void wait_for_completion ();
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void free_list_add (struct libusb_transfer *lut);
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void completed_list_add (struct libusb_transfer *lut);
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struct libusb_transfer *free_list_get ();
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struct libusb_transfer *completed_list_get ();
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// accessor to work from callback context
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fusb_devhandle_libusb1* get_fusb_devhandle_libusb1 () const {
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return d_devhandle;
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}
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};
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#endif /* _FUSB_LINUX1_H_ */
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