hvirtual/cinelerra/track.h

Go to the documentation of this file.

#ifndef TRACK_H
#define TRACK_H

#include "arraylist.h"
#include "asset.inc"
#include "autoconf.inc"
#include "automation.inc"
#include "datatype.h"
#include "bchash.inc"
#include "edit.inc"
#include "edits.inc"
#include "edl.inc"
#include "filexml.inc"
#include "floatautos.inc"
#include "guicast.h"
#include "keyframe.inc"
#include "linklist.h"
#include "module.inc"
#include "patch.inc"
#include "plugin.inc"
#include "pluginset.inc"
#include "renderengine.inc"
#include "sharedlocation.inc"
#include "theme.inc"
#include "intautos.inc"
#include "trackcanvas.inc"
#include "tracks.inc"
#include "transition.inc"

#include <stdint.h>

// UNITS ARE SAMPLES FOR ALL

class Track : public ListItem<Track>
{
public:
        Track(EDL *edl, Tracks *tracks);
        Track();
        virtual ~Track();

        int create_objects();
        int get_id();
        virtual int load_defaults(BC_Hash *defaults);
        int load(FileXML *file, int track_offset, uint32_t load_flags);
        virtual int save_header(FileXML *file) { return 0; };
        virtual int save_derived(FileXML *file) { return 0; };
        virtual int load_header(FileXML *file, uint32_t load_flags) { return 0; };
        virtual int load_derived(FileXML *file, uint32_t load_flags) { return 0; };
        void equivalent_output(Track *track, double *result);

        virtual void copy_from(Track *track);
        Track& operator=(Track& track);
        virtual PluginSet* new_plugins() { return 0; };
// Synchronize playback numbers
        virtual void synchronize_params(Track *track);

// Get number of pixels to display
        virtual int vertical_span(Theme *theme);
        int64_t horizontal_span();
        void resample(double old_rate, double new_rate);

// Get length of track in seconds
        double get_length();
// Get dimensions of source for convenience functions
        void get_source_dimensions(double position, int &w, int &h);

// Editing
        void insert_asset(Asset *asset, 
                double length, 
                double position, 
                int track_number);
        Plugin* insert_effect(char *title, 
                SharedLocation *shared_location, 
                KeyFrame *keyframe,
                PluginSet *plugin_set,
                double start,
                double length,
                int plugin_type);
        void insert_plugin_set(Track *track, double position);
        void detach_effect(Plugin *plugin);
// Insert a track from another EDL
        void insert_track(Track *track, 
                double position, 
                int replace_default,
                int edit_plugins);
// Optimize editing
        void optimize();
        int is_muted(int64_t position, int direction);  // Test muting status

        void move_plugins_up(PluginSet *plugin_set);
        void move_plugins_down(PluginSet *plugin_set);
        void remove_pluginset(PluginSet *plugin_set);
        void remove_asset(Asset *asset);

// Used for determining a selection for editing so leave as int.
// converts the selection to SAMPLES OR FRAMES and stores in value
        virtual int64_t to_units(double position, int round);
// For drawing
        virtual double to_doubleunits(double position);
        virtual double from_units(int64_t position);



// Positions are identical for handle modifications
    virtual int identical(int64_t sample1, int64_t sample2) { return 0; };

// Get the plugin belonging to the set.
        Plugin* get_current_plugin(double position, 
                int plugin_set, 
                int direction, 
                int convert_units,
                int use_nudge);
        Plugin* get_current_transition(double position, 
                int direction, 
                int convert_units,
                int use_nudge);

// detach shared effects referencing module
        void detach_shared_effects(int module); 


// Called by playable tracks to test for playable server.
// Descends the plugin tree without creating a virtual console.
// Used by PlayableTracks::is_playable.
        int is_synthesis(RenderEngine *renderengine, 
                int64_t position, 
                int direction);

// Used by PlayableTracks::is_playable
// Returns 1 if the track is in the output boundaries.
        virtual int is_playable(int64_t position, 
                int direction);

// Test direct copy conditions common to all the rendering routines
        virtual int direct_copy_possible(int64_t start, int direction, int use_nudge);

// Used by PlayableTracks::is_playable
        int plugin_used(int64_t position, int64_t direction);





        virtual int copy_settings(Track *track);
        void shift_keyframes(double position, double length, int convert_units);
        void shift_effects(double position, double length, int convert_units);
        void change_plugins(SharedLocation &old_location, 
                SharedLocation &new_location, 
                int do_swap);
        void change_modules(int old_location, 
                int new_location, 
                int do_swap);

        EDL *edl;
        Tracks *tracks;

        Edits *edits;
// Plugin set uses key frames for automation
        ArrayList<PluginSet*> plugin_set;
        Automation *automation;

// Vertical offset from top of timeline
        int y_pixel;
        int expand_view;
        int draw;
// There is some debate on whether to expand gang from faders to
// dragging operations.  This would allow every edit in a column to get dragged
// simultaneously.
        int gang;
        char title[BCTEXTLEN];
        int play;
        int record;
// Nudge in track units.  Positive shifts track earlier in time.  This way
// the position variables only need to add the nudge.
        int64_t nudge;
// TRACK_AUDIO or TRACK_VIDEO
        int data_type;     



















        int load_automation(FileXML *file);
        int load_edits(FileXML *file);

        virtual int change_channels(int oldchannels, int newchannels) { return 0; };
        virtual int dump();



// ===================================== editing
        int copy(double start, 
                double end, 
                FileXML *file, 
                char *output_path = "");
        int copy_assets(double start, 
                double end, 
                ArrayList<Asset*> *asset_list);
        virtual int copy_derived(int64_t start, int64_t end, FileXML *file) { return 0; };
        virtual int paste_derived(int64_t start, int64_t end, int64_t total_length, FileXML *file, int &current_channel) { return 0; };
        int clear(double start, 
                double end, 
                int edit_edits,
                int edit_labels,
                int clear_plugins, 
                int convert_units,
                Edits *trim_edits);
// Returns the point to restart background rendering at.
// -1 means nothing changed.
        void clear_automation(double selectionstart, 
                double selectionend, 
                int shift_autos   /* = 1 */,
                int default_only  /* = 0 */);
        void straighten_automation(double selectionstart, 
                double selectionend);
        virtual int clear_automation_derived(AutoConf *auto_conf, 
                double selectionstart, 
                double selectionend, 
                int shift_autos = 1) { return 0; };
        virtual int clear_derived(double start, 
                double end) { return 0; };

        int copy_automation(double selectionstart, 
                double selectionend, 
                FileXML *file,
                int default_only,
                int autos_only);
        virtual int copy_automation_derived(AutoConf *auto_conf, 
                double selectionstart, 
                double selectionend, 
                FileXML *file) { return 0; };
        int paste_automation(double selectionstart, 
                double total_length, 
                double frame_rate,
                int64_t sample_rate,
                FileXML *file,
                int default_only);
        virtual int paste_automation_derived(double selectionstart, 
                double selectionend, 
                double total_length, 
                FileXML *file, 
                int shift_autos, 
                int &current_pan) { return 0; };
        int paste_auto_silence(double start, double end);
        virtual int paste_auto_silence_derived(int64_t start, int64_t end) { return 0; };
        int scale_time(float rate_scale, int scale_edits, int scale_autos, int64_t start, int64_t end);
        virtual int scale_time_derived(float rate_scale, int scale_edits, int scale_autos, int64_t start, int64_t end) { return 0; };
        int purge_asset(Asset *asset);
        int asset_used(Asset *asset);
        int clear_handle(double start, 
                double end, 
                int clear_labels,
                int clear_plugins, 
                double &distance);
        int paste_silence(double start, double end, int edit_plugins);
        virtual int select_translation(int cursor_x, int cursor_y) { return 0; };  // select video coordinates for frame
        virtual int update_translation(int cursor_x, int cursor_y, int shift_down) { return 0; };  // move video coordinates
        int select_auto(AutoConf *auto_conf, int cursor_x, int cursor_y);
        virtual int select_auto_derived(float zoom_units, float view_start, AutoConf *auto_conf, int cursor_x, int cursor_y) { return 0; };
        int move_auto(AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down);
        virtual int move_auto_derived(float zoom_units, float view_start, AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down) { return 0; };
        int release_auto();
        virtual int release_auto_derived() { return 0; };
// Return whether automation would prevent direct frame copies.  Not fully implemented.
        int automation_is_used(int64_t start, int64_t end);
        virtual int automation_is_used_derived(int64_t start, int64_t end) { return 0; }

        int popup_transition(int cursor_x, int cursor_y);

// Return 1 if the left handle was selected 2 if the right handle was selected 3 if the track isn't recordable
        int modify_edithandles(double oldposition, 
                double newposition, 
                int currentend, 
                int handle_mode,
                int edit_labels,
                int edit_plugins);
        int modify_pluginhandles(double oldposition, 
                double newposition, 
                int currentend, 
                int handle_mode,
                int edit_labels,
                Edits *trim_edits);
        int select_edit(int cursor_x, 
                int cursor_y, 
                double &new_start, 
                double &new_end);
        virtual int end_translation() { return 0; };
        virtual int reset_translation(int64_t start, int64_t end) { return 0; };
        int feather_edits(int64_t start, int64_t end, int64_t units);
        int64_t get_feather(int64_t selectionstart, int64_t selectionend);


// Absolute number of this track
        int number_of();           

// get_dimensions is used for getting drawing regions so use floats for partial frames
// get the display dimensions in SAMPLES OR FRAMES
        virtual int get_dimensions(double &view_start, 
                double &view_units, 
                double &zoom_units) { return 0; };   
// Longest time from current_position in which nothing changes
        int64_t edit_change_duration(int64_t input_position, 
                int64_t input_length, 
                int reverse, 
                int test_transitions,
                int use_nudge);
        int64_t plugin_change_duration(int64_t input_position,
                int64_t input_length,
                int reverse,
                int use_nudge);
// Utility for edit_change_duration.
        int need_edit(Edit *current, int test_transitions);
// If the edit under position is playable.
// Used by PlayableTracks::is_playable.
        int playable_edit(int64_t position, int direction);

// ===================================== for handles, titles, etc

        int64_t old_view_start;
        int pixel;   // pixel position from top of track view
// Dimensions of this track if video
        int track_w, track_h;




private:
// Identification of the track
        int id;
};

#endif

---