sfdb_freesound_mootcher.h

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/*
    Copyright (C) 2012 Paul Davis 

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

/*sfdb_freesound_mootcher.h****************************************************************************

        Adapted for Ardour by Ben Loftis, March 2008
        Updated to new Freesound API by Colin Fletcher, November 2011

        Mootcher Online Access to thefreesoundproject website
        http://freesound.iua.upf.edu/

        GPL 2005 Jorn Lemon
        mail for questions/remarks: mootcher@twistedlemon.nl
        or go to the freesound website forum

*****************************************************************************/

#include <string>
#include <fstream>
#include <iostream>
#include <stdio.h>
#include <cstring>
#include <string>
#include <sstream>
#include <vector>
#include <gtkmm/progressbar.h>
//#include <ctime>

#include "sfdb_ui.h"

#include "curl/curl.h"

//--- struct to store XML file
struct MemoryStruct {
        char *memory;
        size_t size;
};

enum sortMethod {
        sort_none,              // no sort
        sort_duration_desc,     // Sort by the duration of the sounds, longest sounds first.
        sort_duration_asc,      // Same as above, but shortest sounds first.
        sort_created_desc,      // Sort by the date of when the sound was added. newest sounds first.
        sort_created_asc,       // Same as above, but oldest sounds first.
        sort_downloads_desc,    // Sort by the number of downloads, most downloaded sounds first.
        sort_downloads_asc,     // Same as above, but least downloaded sounds first.
        sort_rating_desc,       // Sort by the average rating given to the sounds, highest rated first.
        sort_rating_asc         // Same as above, but lowest rated sounds first.
};


class Mootcher: public sigc::trackable, public PBD::ScopedConnectionList
{
public:
        Mootcher();
        ~Mootcher();

        bool            checkAudioFile(std::string originalFileName, std::string ID);
        bool            fetchAudioFile(std::string originalFileName, std::string ID, std::string audioURL, SoundFileBrowser *caller);
        std::string     searchText(std::string query, int page, std::string filter, enum sortMethod sort);
        std::string     searchSimilar(std::string id);
        void *          threadFunc();
        SoundFileBrowser *sfb; 
        std::string     audioFileName;
        std::string     ID;

        PBD::Signal2<void, double, double> Progress;
        PBD::Signal0<void> Finished;


private:

        void            ensureWorkingDir();

        std::string     doRequest(std::string uri, std::string params);
        void            setcUrlOptions();

        static size_t   WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data);
        static int      progress_callback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
        std::string     sortMethodString(enum sortMethod sort);
        std::string     getSoundResourceFile(std::string ID);

        CURL *curl;
        char errorBuffer[CURL_ERROR_SIZE];      // storage for cUrl error message

        FILE* theFile;

        void updateProgress(double dlnow, double dltotal);
        void doneWithMootcher();

        Gtk::HBox progress_hbox;
        Gtk::ProgressBar progress_bar;
        Gtk::Button cancel_download_btn;

        bool cancel_download;
        void cancelDownload() { 
                cancel_download = true;
                progress_hbox.hide();
        }

        std::string basePath;
        std::string xmlLocation;
};