hvirtual/cinelerra/commonrender.C

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#include "auto.h"
#include "cache.h"
#include "commonrender.h"
#include "condition.h"
#include "edl.h"
#include "edlsession.h"
#include "intautos.h"
#include "localsession.h"
#include "mainsession.h"
#include "module.h"
#include "mwindow.h"
#include "patchbay.h"
#include "patch.h"
#include "playabletracks.h"
#include "preferences.h"
#include "renderengine.h"
#include "track.h"
#include "tracks.h"
#include "transportque.h"
#include "virtualconsole.h"

CommonRender::CommonRender(RenderEngine *renderengine)
 : Thread(1, 0, 0)
{
        this->renderengine = renderengine;
        reset_parameters();
        start_lock = new Condition(0, "CommonRender::start_lock");
}

CommonRender::~CommonRender()
{
        delete_vconsole();
        if(modules)
        {
                for(int i = 0; i < total_modules; i++)
                        delete modules[i];
                delete [] modules;
        }
        delete start_lock;
}

void CommonRender::reset_parameters()
{
        total_modules = 0;
        modules = 0;
        vconsole = 0;
        done = 0;
        interrupt = 0;
        last_playback = 0;
        asynchronous = 0;
        restart_plugins = 0;
}

void CommonRender::arm_command()
{
        int64_t temp_length = 1;

        current_position = tounits(renderengine->command->playbackstart, 0);

        init_output_buffers();

        last_playback = 0;
        if(test_reconfigure(current_position, temp_length))
        {
                restart_playback();
        }
        else
        {
                vconsole->start_playback();
        }

        done = 0;
        interrupt = 0;
        last_playback = 0;
        restart_plugins = 0;
}



void CommonRender::create_modules()
{
// Create a module for every track, playable or not
        Track *current = renderengine->edl->tracks->first;
        int module = 0;

        if(!modules)
        {
                total_modules = get_total_tracks();
                modules = new Module*[total_modules];

                for(module = 0; module < total_modules && current; current = NEXT)
                {
                        if(current->data_type == data_type)
                        {
                                modules[module] = new_module(current);
                                modules[module]->create_objects();
                                module++;
                        }
                }
        }
        else
// Update changes in plugins for existing modules
        {
                for(module = 0; module < total_modules; module++)
                {
                        modules[module]->create_objects();
                }
        }
}

void CommonRender::start_plugins()
{
// Only start if virtual console was created
        if(restart_plugins)
        {
                for(int i = 0; i < total_modules; i++)
                {
                        modules[i]->render_init();
                }
        }
}

void CommonRender::stop_plugins()
{
        for(int i = 0; i < total_modules; i++)
        {
                modules[i]->render_stop();
        }
}

int CommonRender::test_reconfigure(int64_t position, int64_t &length)
{
        if(!vconsole) return 1;
        if(!modules) return 1;
        
        return vconsole->test_reconfigure(position, length, last_playback);
}


void CommonRender::build_virtual_console()
{
// Create new virtual console object
        if(!vconsole)
        {
                vconsole = new_vconsole_object();
        }

// Create nodes
        vconsole->create_objects();
}

void CommonRender::start_command()
{
        if(renderengine->command->realtime)
        {
                Thread::set_realtime(renderengine->edl->session->real_time_playback &&
                        data_type == TRACK_AUDIO);
                Thread::start();
                start_lock->lock("CommonRender::start_command");
        }
}

int CommonRender::restart_playback()
{
        delete_vconsole();
        create_modules();
        build_virtual_console();
        start_plugins();

        done = 0;
        interrupt = 0;
        last_playback = 0;
        restart_plugins = 0;
        return 0;
}

void CommonRender::delete_vconsole()
{
        if(vconsole) delete vconsole;
        vconsole = 0;
}

int CommonRender::get_boundaries(int64_t &current_render_length)
{
        int64_t loop_end = tounits(renderengine->edl->local_session->loop_end, 1);
        int64_t loop_start = tounits(renderengine->edl->local_session->loop_start, 0);
        int64_t start_position = tounits(renderengine->command->start_position, 0);
        int64_t end_position = tounits(renderengine->command->end_position, 1);


// test absolute boundaries if no loop and not infinite
        if(renderengine->command->single_frame() || 
                (!renderengine->edl->local_session->loop_playback && 
                !renderengine->command->infinite))
        {
                if(renderengine->command->get_direction() == PLAY_FORWARD)
                {
                        if(current_position + current_render_length >= end_position)
                        {
                                last_playback = 1;
                                current_render_length = end_position - current_position;
                        }
                }
// reverse playback
                else               
                {
                        if(current_position - current_render_length <= start_position)
                        {
                                last_playback = 1;
                                current_render_length = current_position - start_position;
                        }
                }
        }

// test against loop boundaries
        if(!renderengine->command->single_frame() &&
                renderengine->edl->local_session->loop_playback && 
                !renderengine->command->infinite)
        {
                if(renderengine->command->get_direction() == PLAY_FORWARD)
                {
                        int64_t segment_end = current_position + current_render_length;
                        if(segment_end > loop_end)
                        {
                                current_render_length = loop_end - current_position;
                        }
                }
                else
                {
                        int64_t segment_end = current_position - current_render_length;
                        if(segment_end < loop_start)
                        {
                                current_render_length = current_position - loop_start;
                        }
                }
        }

        if(renderengine->command->single_frame())
                current_render_length = 1;

        if(current_render_length < 0) current_render_length = 0;
        return 0;
}

void CommonRender::run()
{
        start_lock->unlock();
}





















CommonRender::CommonRender(MWindow *mwindow, RenderEngine *renderengine)
 : Thread()
{
        this->mwindow = mwindow;
        this->renderengine = renderengine;
        current_position = 0;
        interrupt = 0;
        done = 0;
        last_playback = 0;
        vconsole = 0;
        asynchronous = 1;
}


int CommonRender::wait_for_completion()
{
        join();
}





int CommonRender::advance_position(int64_t current_render_length)
{
        int64_t loop_end = tounits(renderengine->edl->local_session->loop_end, 1);
        int64_t loop_start = tounits(renderengine->edl->local_session->loop_start, 0);

// advance the playback position
        if(renderengine->command->get_direction() == PLAY_REVERSE)
                current_position -= current_render_length;
        else
                current_position += current_render_length;

// test loop again
        if(renderengine->edl->local_session->loop_playback && 
                !renderengine->command->infinite)
        {
                if(renderengine->command->get_direction() == PLAY_REVERSE)
                {
                        if(current_position <= loop_start)
                                current_position = loop_end;
                }
                else
                {
                        if(current_position >= loop_end)
                                current_position = loop_start + (current_position - loop_end);
                }
        }
        return 0;
}

int64_t CommonRender::tounits(double position, int round)
{
        return (int64_t)position;
}

double CommonRender::fromunits(int64_t position)
{
        return (double)position;
}

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