hvirtual/cinelerra/vedit.C

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#include "asset.h"
#include "bcsignals.h"
#include "cache.h"
#include "edl.h"
#include "edlsession.h"
#include "file.h"
#include "mwindow.h"
#include "patch.h"
#include "preferences.h"
#include "mainsession.h"
#include "trackcanvas.h"
#include "tracks.h"
#include "transportque.h"
#include "units.h"
#include "vedit.h"
#include "vedits.h"
#include "vframe.h"
#include "vtrack.h"

VEdit::VEdit(EDL *edl, Edits *edits)
 : Edit(edl, edits)
{
}


VEdit::~VEdit() { }

int VEdit::load_properties_derived(FileXML *xml)
{
        channel = xml->tag.get_property("CHANNEL", (int64_t)0);
        return 0;
}





// ================================================== editing



int VEdit::read_frame(VFrame *video_out, 
        int64_t input_position, 
        int direction,
        CICache *cache,
        int use_nudge,
        int use_cache,
        int use_asynchronous)
{
        File *file = cache->check_out(asset,
                edl);
        int result = 0;
        if(use_nudge) input_position += track->nudge;

        if(file)
        {

                input_position = (direction == PLAY_FORWARD) ? input_position : (input_position - 1);

                if(use_asynchronous)
                        file->start_video_decode_thread();
                else
                        file->stop_video_thread();

                file->set_layer(channel);
                file->set_video_position(input_position - startproject + startsource, edl->session->frame_rate);
                if(use_cache) file->set_cache_frames(use_cache);
                result = file->read_frame(video_out);
                if(use_cache) file->set_cache_frames(0);

                cache->check_in(asset);
        }
        else
                result = 1;
        
//for(int i = 0; i < video_out->get_w() * 3 * 20; i++) video_out->get_rows()[0][i] = 128;
        return result;
}

int VEdit::copy_properties_derived(FileXML *xml, int64_t length_in_selection)
{
        return 0;
}

int VEdit::dump_derived()
{
        printf("        VEdit::dump_derived\n");
        printf("                startproject %ld\n", startproject);
        printf("                length %ld\n", length);
}

int64_t VEdit::get_source_end(int64_t default_)
{
        if(!asset) return default_;   // Infinity

        return (int64_t)((double)asset->video_length / asset->frame_rate * edl->session->frame_rate + 0.5);
}

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