renderengine.h

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#ifndef RENDERENGINE_H
#define RENDERENGINE_H


class RenderEngine;

#include "arender.inc"
#include "audiodevice.inc"
#include "cache.inc"
#include "canvas.inc"
#include "channel.inc"
#include "channeldb.inc"
#include "condition.inc"
#include "mutex.inc"
#include "mwindow.inc"
#include "playbackengine.inc"
#include "pluginserver.inc"
#include "preferences.inc"
#include "thread.h"
#include "transportque.inc"
#include "videodevice.inc"
#include "vrender.inc"

class RenderEngine : public Thread
{
public:
        RenderEngine(PlaybackEngine *playback_engine,
                Preferences *preferences, 
                TransportCommand *command, 
                Canvas *output,
                ArrayList<PluginServer*> *plugindb,
                ChannelDB *channeldb);
        ~RenderEngine();

        int total_playable_channels();
// Translate sequential to subscript for EDL array
        int playable_channel_number(int number);
        void get_duty();
        void create_render_threads();
        void arm_render_threads();
        void start_render_threads();
        void wait_render_threads();
        void interrupt_playback();
        int get_output_w();
        int get_output_h();
        int brender_available(int position, int direction);
// Get current channel for the BUZ output
        Channel* get_current_channel();
        double get_tracking_position();
// Find the plugin whose title matches title and return it
        PluginServer* scan_plugindb(char *title,
                int data_type);
        CICache* get_acache();
        CICache* get_vcache();
        void set_acache(CICache *cache);
        void set_vcache(CICache *cache);
// Get levels for tracking
        void get_output_levels(double *levels, int64_t position);
        void get_module_levels(ArrayList<double> *module_levels, int64_t position);

        void run();
// Sends the command sequence, compensating for network latency
        int arm_command(TransportCommand *command,
                int &current_vchannel, 
                int &current_achannel);
// Start the command
        int start_command();

        int open_output();
        int close_output();
// return position to synchronize video against
        int64_t sync_position();
// Called by VRender to reset the timers once the first frame is done.
        void reset_sync_position();
// return samples since start of playback
        int64_t session_position();

// Update preferences window
        void update_framerate(float framerate);

// Copy of command
        TransportCommand *command;
// EDL to be used by renderengine since not all commands involve an EDL change
        EDL *edl;
// Pointer to playback config for one head
        PlaybackConfig *config;
// Defined only for the master render engine
        PlaybackEngine *playback_engine;
// Copy of preferences
        Preferences *preferences;
// Canvas if being used for CWindow
        Canvas *output;


// Lock out new commands until completion
        Condition *input_lock;
// Lock out interrupts until started
        Condition *start_lock;
        Condition *output_lock;
// Lock out audio and synchronization timers until first frame is done
        Condition *first_frame_lock;
// Lock out interrupts before and after renderengine is active
        Mutex *interrupt_lock;

// Show the timecode on the video
        int show_tc;

        int done;
        AudioDevice *audio;
        VideoDevice *video;
        ARender *arender;
        VRender *vrender;
        int do_audio;
        int do_video;
// Timer for synchronization without audio
        Timer timer;
        float actual_frame_rate;
// If the termination came from interrupt or end of selection
        int interrupted;

        ArrayList<PluginServer*> *plugindb;
// Channels for the BUZ output
        ChannelDB *channeldb;

// Samples in audio buffer to process
        int64_t fragment_len;
// Samples to send to audio device after speed adjustment
        int64_t adjusted_fragment_len;              
// CICaches for use if no playbackengine exists
        CICache *audio_cache, *video_cache;
















// constructing with an audio device forces output buffer allocation
// constructing without an audio device puts in one buffer at a time mode
        RenderEngine(MWindow *mwindow, 
                AudioDevice *audio = 0, 
                VideoDevice *video = 0,
                PlaybackEngine *playbackengine = 0);

// buffersize is in samples
        int reset_parameters();

        int arm_playback_audio(int64_t input_length, 
                        int64_t amodule_render_fragment, 
                        int64_t playback_buffer, 
                        int64_t output_length, 
                        int audio_channels);

        int arm_playback_video(int every_frame, 
                        int64_t read_length, 
                        int64_t output_length,
                        int track_w,
                        int track_h,
                        int output_w,
                        int output_h);

        int64_t get_correction_factor(int reset);     // calling it resets the correction factor

// start video since vrender is the master
        int start_video();


// information for playback
        int follow_loop;       // loop if mwindow is looped
        int infinite;          // don't stop rendering at the end of the range or loops

        int64_t start_position;      // lowest numbered sample in playback range
        int64_t end_position;        // highest numbered sample in playback range
        int64_t current_sample;
        int audio_channels;
        int every_frame;

        MWindow *mwindow;
};








#endif

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