hvirtual/cinelerra/vtrack.C

Go to the documentation of this file.

#include "asset.h"
#include "autoconf.h"
#include "cache.h"
#include "clip.h"
#include "datatype.h"
#include "edit.h"
#include "edits.h"
#include "edl.h"
#include "edlsession.h"
#include "filexml.h"
#include "floatauto.h"
#include "floatautos.h"
#include "language.h"
#include "localsession.h"
#include "patch.h"
#include "mainsession.h"
#include "theme.h"
#include "trackcanvas.h"
#include "tracks.h"
#include "transportque.inc"
#include "units.h"
#include "vautomation.h"
#include "vedit.h"
#include "vedits.h"
#include "vframe.h"
#include "vmodule.h"
#include "vpluginset.h"
#include "vtrack.h"

VTrack::VTrack(EDL *edl, Tracks *tracks)
 : Track(edl, tracks)
{
        data_type = TRACK_VIDEO;
        draw = 1;
}

VTrack::~VTrack()
{
}

int VTrack::create_objects()
{
        Track::create_objects();
        automation = new VAutomation(edl, this);
        automation->create_objects();
        edits = new VEdits(edl, this);
        return 0;
}

// Used by PlaybackEngine
void VTrack::synchronize_params(Track *track)
{
        Track::synchronize_params(track);

        VTrack *vtrack = (VTrack*)track;
}

// Used by EDL::operator=
int VTrack::copy_settings(Track *track)
{
        Track::copy_settings(track);

        VTrack *vtrack = (VTrack*)track;
        return 0;
}

int VTrack::vertical_span(Theme *theme)
{
        int track_h = Track::vertical_span(theme);
        int patch_h = 0;
        if(expand_view)
        {
                patch_h += theme->title_h + theme->play_h + theme->fade_h + theme->mode_h;
        }
        return MAX(track_h, patch_h);
}


PluginSet* VTrack::new_plugins()
{
        return new VPluginSet(edl, this);
}

int VTrack::load_defaults(BC_Hash *defaults)
{
        Track::load_defaults(defaults);
        return 0;
}

void VTrack::set_default_title()
{
        Track *current = ListItem<Track>::owner->first;
        int i;
        for(i = 0; current; current = NEXT)
        {
                if(current->data_type == TRACK_VIDEO) i++;
        }
        sprintf(title, _("Video %d"), i);
}

int64_t VTrack::to_units(double position, int round)
{
        if(round)
        {
                return Units::round(position * edl->session->frame_rate);
        }
        else
        {
// Kludge for rounding errors, just on a smaller scale than formal rounding
                position *= edl->session->frame_rate;
                return Units::to_int64(position);
        }
}

double VTrack::to_doubleunits(double position)
{
        return position * edl->session->frame_rate;
}


double VTrack::from_units(int64_t position)
{
        return (double)position / edl->session->frame_rate;
}




int VTrack::identical(int64_t sample1, int64_t sample2)
{
// Units of frames
        if(labs(sample1 - sample2) <= 1) return 1; else return 0;
}

int VTrack::save_header(FileXML *file)
{
        file->tag.set_property("TYPE", "VIDEO");
        return 0;
}

int VTrack::save_derived(FileXML *file)
{
        return 0;
}

int VTrack::load_header(FileXML *file, uint32_t load_flags)
{
        return 0;
}

int VTrack::load_derived(FileXML *file, uint32_t load_flags)
{
        return 0;
}


int VTrack::direct_copy_possible(int64_t start, int direction, int use_nudge)
{
        int i;
        if(use_nudge) start += nudge;

// Track size must equal output size
        if(track_w != edl->session->output_w || track_h != edl->session->output_h)
                return 0;

// No automation must be present in the track
        if(!automation->direct_copy_possible(start, direction))
                return 0;

// No plugin must be present
        if(plugin_used(start, direction)) 
                return 0;

// No transition
        if(get_current_transition(start, direction, 0, 0))
                return 0;

        return 1;
}

















int VTrack::create_derived_objs(int flash)
{
        int i;
        edits = new VEdits(edl, this);
        return 0;
}


int VTrack::get_dimensions(double &view_start, 
        double &view_units, 
        double &zoom_units)
{
        view_start = edl->local_session->view_start * edl->session->frame_rate;
        view_units = 0;
//      view_units = Units::toframes(tracks->view_samples(), mwindow->session->sample_rate, mwindow->session->frame_rate);
        zoom_units = edl->local_session->zoom_sample / edl->session->sample_rate * edl->session->frame_rate;
}

int VTrack::copy_derived(int64_t start, int64_t end, FileXML *xml)
{
// automation is copied in the Track::copy
        return 0;
}

int VTrack::copy_automation_derived(AutoConf *auto_conf, int64_t start, int64_t end, FileXML *file)
{
        return 0;
}

int VTrack::paste_derived(int64_t start, int64_t end, int64_t total_length, FileXML *xml, int &current_channel)
{
        return 0;
}

int VTrack::paste_output(int64_t startproject, int64_t endproject, int64_t startsource, int64_t endsource, int layer, Asset *asset)
{
        return 0;
}

int VTrack::clear_derived(int64_t start, int64_t end)
{
        return 0;
}

int VTrack::paste_automation_derived(int64_t start, int64_t end, int64_t total_length, FileXML *xml, int shift_autos, int &current_pan)
{
        return 0;
}

int VTrack::clear_automation_derived(AutoConf *auto_conf, int64_t start, int64_t end, int shift_autos)
{
        return 0;
}

int VTrack::draw_autos_derived(float view_start, float zoom_units, AutoConf *auto_conf)
{
        return 0;
}


int VTrack::select_auto_derived(float zoom_units, float view_start, AutoConf *auto_conf, int cursor_x, int cursor_y)
{
        return 0;
}


int VTrack::move_auto_derived(float zoom_units, float view_start, AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down)
{
        return 0;
}

int VTrack::draw_floating_autos_derived(float view_start, float zoom_units, AutoConf *auto_conf, int flash)
{
        return 0;
}

int VTrack::is_playable(int64_t position, int direction)
{
        int result = 0;
        float in_x, in_y, in_w, in_h;
        float out_x, out_y, out_w, out_h;

        calculate_output_transfer(position, 
                direction, 
                in_x, in_y, in_w, in_h,
                out_x, out_y, out_w, out_h);

//printf("VTrack::is_playable %0.0f %0.0f %0.0f %0.0f %0.0f %0.0f %0.0f %0.0f\n", 
//in_x, in_y, in_w, in_h, out_x, out_y, out_w, out_h);
        if(out_w > 0 && out_h > 0) 
                result = 1;
        return result;
}

void VTrack::calculate_input_transfer(Asset *asset, 
        int64_t position, 
        int direction, 
        float &in_x, 
        float &in_y, 
        float &in_w, 
        float &in_h,
        float &out_x, 
        float &out_y, 
        float &out_w, 
        float &out_h)
{
        float auto_x, auto_y, auto_z;
        float camera_z = 1;
        float camera_x = asset->width / 2;
        float camera_y = asset->height / 2;
// camera and output coords
        float z[6], x[6], y[6];        

//printf("VTrack::calculate_input_transfer %lld\n", position);

// get camera center in asset
        automation->get_camera(&auto_x, 
                &auto_y, 
                &auto_z, 
                position, 
                direction);

        camera_z *= auto_z;
        camera_x += auto_x;
        camera_y += auto_y;

// get camera coords on asset
        x[0] = camera_x - (float)track_w / 2 / camera_z;
        y[0] = camera_y - (float)track_h / 2 / camera_z;
        x[1] = x[0] + (float)track_w / camera_z;
        y[1] = y[0] + (float)track_h / camera_z;

// get asset coords on camera
        x[2] = 0;
        y[2] = 0;
        x[3] = track_w;
        y[3] = track_h;

// crop asset coords on camera
        if(x[0] < 0)
        {
                x[2] -= x[0] * camera_z;
                x[0] = 0;
        }
        if(y[0] < 0)
        {
                y[2] -= y[0] * camera_z;
                y[0] = 0;
        }
        if(x[1] > asset->width)
        {
                x[3] -= (x[1] - asset->width) * camera_z;
                x[1] = asset->width;
        }
        if(y[1] > asset->height)
        {
                y[3] -= (y[1] - asset->height) * camera_z;
                y[1] = asset->height;
        }

// get output bounding box
        out_x = x[2];
        out_y = y[2];
        out_w = x[3] - x[2];
        out_h = y[3] - y[2];

        in_x = x[0];
        in_y = y[0];
        in_w = x[1] - x[0];
        in_h = y[1] - y[0];
// printf("VTrack::calculate_input_transfer %f %f %f %f -> %f %f %f %f\n", 
// in_x, in_y, in_w, in_h,
// out_x, out_y, out_w, out_h);
}

void VTrack::calculate_output_transfer(int64_t position, 
        int direction, 
        float &in_x, 
        float &in_y, 
        float &in_w, 
        float &in_h,
        float &out_x, 
        float &out_y, 
        float &out_w, 
        float &out_h)
{
        float center_x, center_y, center_z;
        float x[4], y[4];

        x[0] = 0;
        y[0] = 0;
        x[1] = track_w;
        y[1] = track_h;

        automation->get_projector(&center_x, 
                &center_y, 
                &center_z, 
                position, 
                direction);

        center_x += edl->session->output_w / 2;
        center_y += edl->session->output_h / 2;

        x[2] = center_x - (track_w / 2) * center_z;
        y[2] = center_y - (track_h / 2) * center_z;
        x[3] = x[2] + track_w * center_z;
        y[3] = y[2] + track_h * center_z;

// Clip to boundaries of output
        if(x[2] < 0)
        {
                x[0] -= (x[2] - 0) / center_z;
                x[2] = 0;
        }
        if(y[2] < 0)
        {
                y[0] -= (y[2] - 0) / center_z;
                y[2] = 0;
        }
        if(x[3] > edl->session->output_w)
        {
                x[1] -= (x[3] - edl->session->output_w) / center_z;
                x[3] = edl->session->output_w;
        }
        if(y[3] > edl->session->output_h)
        {
                y[1] -= (y[3] - edl->session->output_h) / center_z;
                y[3] = edl->session->output_h;
        }

        in_x = x[0];
        in_y = y[0];
        in_w = x[1] - x[0];
        in_h = y[1] - y[0];
        out_x = x[2];
        out_y = y[2];
        out_w = x[3] - x[2];
        out_h = y[3] - y[2];
// printf("VTrack::calculate_output_transfer %f %f %f %f -> %f %f %f %f\n", 
// in_x, in_y, in_w, in_h,
// out_x, out_y, out_w, out_h);
}



int VTrack::get_projection(float &in_x1, 
        float &in_y1, 
        float &in_x2, 
        float &in_y2, 
        float &out_x1, 
        float &out_y1, 
        float &out_x2, 
        float &out_y2, 
        int frame_w, 
        int frame_h, 
        int64_t real_position, 
        int direction)
{
        float center_x, center_y, center_z;
        float x[4], y[4];

        automation->get_projector(&center_x, 
                &center_y, 
                &center_z, 
                real_position, 
                direction);

        x[0] = y[0] = 0;
        x[1] = frame_w;
        y[1] = frame_h;

        center_x += edl->session->output_w / 2;
        center_y += edl->session->output_h / 2;

        x[2] = center_x - (frame_w / 2) * center_z;
        y[2] = center_y - (frame_h / 2) * center_z;
        x[3] = x[2] + frame_w * center_z;
        y[3] = y[2] + frame_h * center_z;

        if(x[2] < 0)
        {
                x[0] -= x[2] / center_z;
                x[2] = 0;
        }
        if(y[2] < 0)
        {
                y[0] -= y[2] / center_z;
                y[2] = 0;
        }
        if(x[3] > edl->session->output_w)
        {
                x[1] -= (x[3] - edl->session->output_w) / center_z;
                x[3] = edl->session->output_w;
        }
        if(y[3] > edl->session->output_h)
        {
                y[1] -= (y[3] - edl->session->output_h) / center_z;
                y[3] = edl->session->output_h;
        }

        in_x1 = x[0];
        in_y1 = y[0];
        in_x2 = x[1];
        in_y2 = y[1];
        out_x1 = x[2];
        out_y1 = y[2];
        out_x2 = x[3];
        out_y2 = y[3];
        return 0;
}


void VTrack::translate(float offset_x, float offset_y, int do_camera)
{
        int subscript;
        if(do_camera) 
                subscript = AUTOMATION_CAMERA_X;
        else
                subscript = AUTOMATION_PROJECTOR_X;
        
// Translate default keyframe
        ((FloatAuto*)automation->autos[subscript]->default_auto)->value += offset_x;
        ((FloatAuto*)automation->autos[subscript + 1]->default_auto)->value += offset_y;

// Translate everyone else
        for(Auto *current = automation->autos[subscript]->first; 
                current; 
                current = NEXT)
        {
                ((FloatAuto*)current)->value += offset_x;
        }

        for(Auto *current = automation->autos[subscript + 1]->first; 
                current; 
                current = NEXT)
        {
                ((FloatAuto*)current)->value += offset_y;
        }
}

---