/home/raskolnikov/dev/psynth/trunk/src/psynth/graph/node_sampler.hpp

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/***************************************************************************
 *                                                                         *
 *   PSYCHOSYNTH                                                           *
 *   ===========                                                           *
 *                                                                         *
 *   Copyright (C) Juan Pedro Bolivar Puente 2007                          *
 *                                                                         *
 *   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 3 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, see <http://www.gnu.org/licenses/>. *
 *                                                                         *
 ***************************************************************************/

#ifndef PSYNTH_OBJECTSAMPLER_H
#define PSYNTH_OBJECTSAMPLER_H

#include <mutex>

#include <psynth/graph/node.hpp>
#include <psynth/io/file_input.hpp>
#include <psynth/io/caching_file_input.hpp>
#include <psynth/graph/node_factory.hpp>
#include <psynth/synth/scaler.hpp>

namespace psynth
{
namespace graph
{

class mutex;

class node_sampler : public node
{
public:
    enum in_audio_socket_id {
        N_IN_A_SOCKETS
    };
        
    enum in_control_socket_id {
        IN_C_RATE,
        IN_C_TRIGGER,
        N_IN_C_SOCKETS
    };

    enum param_id {
        PARAM_FILE = node::N_COMMON_PARAMS,
        PARAM_AMPLITUDE,
        PARAM_RATE,
        PARAM_TEMPO,
        PARAM_PITCH,
        N_PARAM
    };
    
    enum out_audio_socket_id {
        OUT_A_OUTPUT,
        N_OUT_A_SOCKETS
    };

    enum out_control_socket_id {
        N_OUT_C_SOCKETS
    };
    
private:
    typedef sound::stereo32sf_range  interleaved_range;
    typedef sound::stereo32sf_buffer interleaved_buffer;
    
    io::file_input_ptr<interleaved_range> m_reader;
    io::caching_file_input_adapter<interleaved_range,
                                   decltype (m_reader)> m_fetcher;
    
    interleaved_buffer m_inbuf;;
    synth::scaler<interleaved_range> m_scaler;
    
    float m_ctrl_pos;
    
    float m_param_ampl;
    float m_param_rate;
    float m_param_tempo;
    float m_param_pitch;

    bool m_restart;
    
    std::string m_param_file;
    
    std::mutex m_update_mutex;
    
    void on_file_change (node_param& par);
    void read (audio_buffer& buf, int start, int end);
    void restart();
    
    void do_update (const node* caller, int caller_port_type, int caller_port);
    void do_advance ();
    void on_info_change ();
    
public:
    node_sampler (const audio_info& info);
    ~node_sampler ();
};

PSYNTH_DECLARE_NODE_FACTORY (node_sampler, "sampler");

} /* namespacce graph */
} /* namespace psynth */

#endif /* PSYNTH_OBJECTSAMPLER_H */