sage.cpp

Go to the documentation of this file.

 
/*
 * Copyright (c) 2013-2023 CESNET z.s.p.o.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of CESNET nor the names of its contributors may be
 *    used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#include "config_unix.h"
#include "config_win32.h"
#endif // HAVE_CONFIG_H
 
#include <string>
#include <sstream>
 
#include "host.h"
#include "lib_common.h"
#include "video_display.h"
#include "video_rxtx/sage.hpp"
#include "video_rxtx.hpp"
#include "video.h"
 
using namespace std;
 
sage_video_rxtx::sage_video_rxtx(map<string, param_u> const &params) :
        video_rxtx(params)
{
        ostringstream oss;
 
        if (params.at("opts").str) {
                oss << params.at("opts").str << ":";
        }
 
        oss << "fs=" << params.at("receiver").str;
        oss << ":tx"; // indicates that we are in tx mode
        int ret = initialize_video_display(&m_sender_mod, "sage",
                        oss.str().c_str(), 0, NULL, &m_sage_tx_device);
        if(ret != 0) {
                throw string("Unable to initialize SAGE TX.");
        }
        display_run_new_thread(m_sage_tx_device);
        memset(&m_saved_video_desc, 0, sizeof(m_saved_video_desc));
}
 
void
sage_video_rxtx::send_frame(shared_ptr<video_frame> tx_frame) noexcept
{
        if (!video_desc_eq(m_saved_video_desc,
                           video_desc_from_frame(tx_frame.get()))) {
                display_reconfigure(m_sage_tx_device,
                                video_desc_from_frame(tx_frame.get()), VIDEO_NORMAL);
                m_saved_video_desc = video_desc_from_frame(tx_frame.get());
        }
        struct video_frame *frame =
                display_get_frame(m_sage_tx_device);
        memcpy(frame->tiles[0].data, tx_frame->tiles[0].data,
                        tx_frame->tiles[0].data_len);
        display_put_frame(m_sage_tx_device, frame, PUTF_NONBLOCK);
}
 
sage_video_rxtx::~sage_video_rxtx()
{
        // poisoned pill to exit thread
        display_put_frame(m_sage_tx_device, NULL, PUTF_NONBLOCK);
 
        display_join(m_sage_tx_device);
        display_done(m_sage_tx_device);
}
 
static video_rxtx *create_video_rxtx_sage(std::map<std::string, param_u> const &params)
{
        return new sage_video_rxtx(params);
}
 
static const struct video_rxtx_info sage_video_rxtx_info = {
        "SAGE",
        create_video_rxtx_sage
};
 
REGISTER_MODULE(sage, &sage_video_rxtx_info, LIBRARY_CLASS_VIDEO_RXTX, VIDEO_RXTX_ABI_VERSION);