hvirtual/plugins/linearblur/linearblur.C

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#include <math.h>
#include <stdint.h>
#include <string.h>

#include "bcdisplayinfo.h"
#include "clip.h"
#include "bchash.h"
#include "filexml.h"
#include "keyframe.h"
#include "language.h"
#include "loadbalance.h"
#include "picon_png.h"
#include "pluginvclient.h"
#include "vframe.h"



class LinearBlurMain;
class LinearBlurEngine;





class LinearBlurConfig
{
public:
        LinearBlurConfig();

        int equivalent(LinearBlurConfig &that);
        void copy_from(LinearBlurConfig &that);
        void interpolate(LinearBlurConfig &prev, 
                LinearBlurConfig &next, 
                long prev_frame, 
                long next_frame, 
                long current_frame);

        int radius;
        int steps;
        int angle;
        int r;
        int g;
        int b;
        int a;
};



class LinearBlurSize : public BC_ISlider
{
public:
        LinearBlurSize(LinearBlurMain *plugin, 
                int x, 
                int y, 
                int *output,
                int min,
                int max);
        int handle_event();
        LinearBlurMain *plugin;
        int *output;
};

class LinearBlurToggle : public BC_CheckBox
{
public:
        LinearBlurToggle(LinearBlurMain *plugin, 
                int x, 
                int y, 
                int *output,
                char *string);
        int handle_event();
        LinearBlurMain *plugin;
        int *output;
};

class LinearBlurWindow : public BC_Window
{
public:
        LinearBlurWindow(LinearBlurMain *plugin, int x, int y);
        ~LinearBlurWindow();

        int create_objects();
        int close_event();

        LinearBlurSize *angle, *steps, *radius;
        LinearBlurToggle *r, *g, *b, *a;
        LinearBlurMain *plugin;
};



PLUGIN_THREAD_HEADER(LinearBlurMain, LinearBlurThread, LinearBlurWindow)


// Output coords for a layer of blurring
// Used for OpenGL only
class LinearBlurLayer
{
public:
        LinearBlurLayer() {};
        int x, y;
};

class LinearBlurMain : public PluginVClient
{
public:
        LinearBlurMain(PluginServer *server);
        ~LinearBlurMain();

        int process_buffer(VFrame *frame,
                int64_t start_position,
                double frame_rate);
        int is_realtime();
        int load_defaults();
        int save_defaults();
        void save_data(KeyFrame *keyframe);
        void read_data(KeyFrame *keyframe);
        void update_gui();
        int handle_opengl();

        PLUGIN_CLASS_MEMBERS(LinearBlurConfig, LinearBlurThread)

        void delete_tables();
        VFrame *input, *output, *temp;
        LinearBlurEngine *engine;
        int **scale_y_table;
        int **scale_x_table;
        LinearBlurLayer *layer_table;
        int table_entries;
        int need_reconfigure;
// The accumulation buffer is needed because 8 bits isn't precise enough
        unsigned char *accum;
};

class LinearBlurPackage : public LoadPackage
{
public:
        LinearBlurPackage();
        int y1, y2;
};

class LinearBlurUnit : public LoadClient
{
public:
        LinearBlurUnit(LinearBlurEngine *server, LinearBlurMain *plugin);
        void process_package(LoadPackage *package);
        LinearBlurEngine *server;
        LinearBlurMain *plugin;
};

class LinearBlurEngine : public LoadServer
{
public:
        LinearBlurEngine(LinearBlurMain *plugin, 
                int total_clients, 
                int total_packages);
        void init_packages();
        LoadClient* new_client();
        LoadPackage* new_package();
        LinearBlurMain *plugin;
};



















REGISTER_PLUGIN(LinearBlurMain)



LinearBlurConfig::LinearBlurConfig()
{
        radius = 10;
        angle = 0;
        steps = 10;
        r = 1;
        g = 1;
        b = 1;
        a = 1;
}

int LinearBlurConfig::equivalent(LinearBlurConfig &that)
{
        return 
                radius == that.radius &&
                angle == that.angle &&
                steps == that.steps &&
                r == that.r &&
                g == that.g &&
                b == that.b &&
                a == that.a;
}

void LinearBlurConfig::copy_from(LinearBlurConfig &that)
{
        radius = that.radius;
        angle = that.angle;
        steps = that.steps;
        r = that.r;
        g = that.g;
        b = that.b;
        a = that.a;
}

void LinearBlurConfig::interpolate(LinearBlurConfig &prev, 
        LinearBlurConfig &next, 
        long prev_frame, 
        long next_frame, 
        long current_frame)
{
        double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
        double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
        this->radius = (int)(prev.radius * prev_scale + next.radius * next_scale + 0.5);
        this->angle = (int)(prev.angle * prev_scale + next.angle * next_scale + 0.5);
        this->steps = (int)(prev.steps * prev_scale + next.steps * next_scale + 0.5);
        r = prev.r;
        g = prev.g;
        b = prev.b;
        a = prev.a;
}









PLUGIN_THREAD_OBJECT(LinearBlurMain, LinearBlurThread, LinearBlurWindow)



LinearBlurWindow::LinearBlurWindow(LinearBlurMain *plugin, int x, int y)
 : BC_Window(plugin->gui_string, 
        x,
        y,
        230, 
        290, 
        230, 
        290, 
        0, 
        1)
{
        this->plugin = plugin; 
}

LinearBlurWindow::~LinearBlurWindow()
{
}

int LinearBlurWindow::create_objects()
{
        int x = 10, y = 10;

        add_subwindow(new BC_Title(x, y, _("Length:")));
        y += 20;
        add_subwindow(radius = new LinearBlurSize(plugin, x, y, &plugin->config.radius, 0, 100));
        y += 30;
        add_subwindow(new BC_Title(x, y, _("Angle:")));
        y += 20;
        add_subwindow(angle = new LinearBlurSize(plugin, x, y, &plugin->config.angle, -180, 180));
        y += 30;
        add_subwindow(new BC_Title(x, y, _("Steps:")));
        y += 20;
        add_subwindow(steps = new LinearBlurSize(plugin, x, y, &plugin->config.steps, 1, 200));
        y += 30;
        add_subwindow(r = new LinearBlurToggle(plugin, x, y, &plugin->config.r, _("Red")));
        y += 30;
        add_subwindow(g = new LinearBlurToggle(plugin, x, y, &plugin->config.g, _("Green")));
        y += 30;
        add_subwindow(b = new LinearBlurToggle(plugin, x, y, &plugin->config.b, _("Blue")));
        y += 30;
        add_subwindow(a = new LinearBlurToggle(plugin, x, y, &plugin->config.a, _("Alpha")));
        y += 30;

        show_window();
        flush();
        return 0;
}

WINDOW_CLOSE_EVENT(LinearBlurWindow)










LinearBlurToggle::LinearBlurToggle(LinearBlurMain *plugin, 
        int x, 
        int y, 
        int *output, 
        char *string)
 : BC_CheckBox(x, y, *output, string)
{
        this->plugin = plugin;
        this->output = output;
}

int LinearBlurToggle::handle_event()
{
        *output = get_value();
        plugin->send_configure_change();
        return 1;
}







LinearBlurSize::LinearBlurSize(LinearBlurMain *plugin, 
        int x, 
        int y, 
        int *output,
        int min,
        int max)
 : BC_ISlider(x, y, 0, 200, 200, min, max, *output)
{
        this->plugin = plugin;
        this->output = output;
}
int LinearBlurSize::handle_event()
{
        *output = get_value();
        plugin->send_configure_change();
        return 1;
}










LinearBlurMain::LinearBlurMain(PluginServer *server)
 : PluginVClient(server)
{
        PLUGIN_CONSTRUCTOR_MACRO
        engine = 0;
        scale_x_table = 0;
        scale_y_table = 0;
        table_entries = 0;
        accum = 0;
        need_reconfigure = 1;
        temp = 0;
        layer_table = 0;
}

LinearBlurMain::~LinearBlurMain()
{
        PLUGIN_DESTRUCTOR_MACRO
        if(engine) delete engine;
        delete_tables();
        if(accum) delete [] accum;
        if(temp) delete temp;
}

char* LinearBlurMain::plugin_title() { return N_("Linear Blur"); }
int LinearBlurMain::is_realtime() { return 1; }


NEW_PICON_MACRO(LinearBlurMain)

SHOW_GUI_MACRO(LinearBlurMain, LinearBlurThread)

SET_STRING_MACRO(LinearBlurMain)

RAISE_WINDOW_MACRO(LinearBlurMain)

LOAD_CONFIGURATION_MACRO(LinearBlurMain, LinearBlurConfig)

void LinearBlurMain::delete_tables()
{
        if(scale_x_table)
        {
                for(int i = 0; i < table_entries; i++)
                        delete [] scale_x_table[i];
                delete [] scale_x_table;
        }

        if(scale_y_table)
        {
                for(int i = 0; i < table_entries; i++)
                        delete [] scale_y_table[i];
                delete [] scale_y_table;
        }
        delete [] layer_table;
        layer_table = 0;
        scale_x_table = 0;
        scale_y_table = 0;
        table_entries = 0;
}

int LinearBlurMain::process_buffer(VFrame *frame,
                                                        int64_t start_position,
                                                        double frame_rate)
{
        need_reconfigure |= load_configuration();

        read_frame(frame,
                0,
                get_source_position(),
                get_framerate(),
                get_use_opengl());

// Generate tables here.  The same table is used by many packages to render
// each horizontal stripe.  Need to cover the entire output range in  each
// table to avoid green borders
        if(need_reconfigure)
        {
                int w = frame->get_w();
                int h = frame->get_h();
                int x_offset;
                int y_offset;
                int angle = config.angle;
                int radius = config.radius * MIN(w, h) / 100;

                while(angle < 0) angle += 360;
                switch(angle)
                {
                        case 0:
                        case 360:
                                x_offset = radius;
                                y_offset = 0;
                                break;
                        case 90:
                                x_offset = 0;
                                y_offset = radius;
                                break;
                        case 180:
                                x_offset = radius;
                                y_offset = 0;
                                break;
                        case 270:
                                x_offset = 0;
                                y_offset = radius;
                                break;
                        default:
                                y_offset = (int)(sin((float)config.angle / 360 * 2 * M_PI) * radius);
                                x_offset = (int)(cos((float)config.angle / 360 * 2 * M_PI) * radius);
                                break;
                }


                delete_tables();
                scale_x_table = new int*[config.steps];
                scale_y_table = new int*[config.steps];
                table_entries = config.steps;
                layer_table = new LinearBlurLayer[table_entries];

//printf("LinearBlurMain::process_realtime 1 %d %d %d\n", radius, x_offset, y_offset);

                for(int i = 0; i < config.steps; i++)
                {
                        float fraction = (float)(i - config.steps / 2) / config.steps;
                        int x = (int)(fraction * x_offset);
                        int y = (int)(fraction * y_offset);

                        int *x_table;
                        int *y_table;
                        scale_y_table[i] = y_table = new int[h];
                        scale_x_table[i] = x_table = new int[w];

                        layer_table[i].x = x;
                        layer_table[i].y = y;
                        for(int j = 0; j < h; j++)
                        {
                                y_table[j] = j + y;
                                CLAMP(y_table[j], 0, h - 1);
                        }
                        for(int j = 0; j < w; j++)
                        {
                                x_table[j] = j + x;
                                CLAMP(x_table[j], 0, w - 1);
                        }
                }
                need_reconfigure = 0;
        }

        if(get_use_opengl()) return run_opengl();


        if(!engine) engine = new LinearBlurEngine(this,
                get_project_smp() + 1,
                get_project_smp() + 1);
        if(!accum) accum = new unsigned char[frame->get_w() * 
                frame->get_h() *
                cmodel_components(frame->get_color_model()) *
                MAX(sizeof(int), sizeof(float))];

        this->input = frame;
        this->output = frame;


        if(!temp) temp = new VFrame(0,
                frame->get_w(),
                frame->get_h(),
                frame->get_color_model());
        temp->copy_from(frame);
        this->input = temp;


        bzero(accum, 
                frame->get_w() * 
                frame->get_h() * 
                cmodel_components(frame->get_color_model()) * 
                MAX(sizeof(int), sizeof(float)));
        engine->process_packages();
        return 0;
}


void LinearBlurMain::update_gui()
{
        if(thread)
        {
                load_configuration();
                thread->window->lock_window();
                thread->window->radius->update(config.radius);
                thread->window->angle->update(config.angle);
                thread->window->steps->update(config.steps);
                thread->window->r->update(config.r);
                thread->window->g->update(config.g);
                thread->window->b->update(config.b);
                thread->window->a->update(config.a);
                thread->window->unlock_window();
        }
}


int LinearBlurMain::load_defaults()
{
        char directory[1024], string[1024];
// set the default directory
        sprintf(directory, "%slinearblur.rc", BCASTDIR);

// load the defaults
        defaults = new BC_Hash(directory);
        defaults->load();

        config.radius = defaults->get("RADIUS", config.radius);
        config.angle = defaults->get("ANGLE", config.angle);
        config.steps = defaults->get("STEPS", config.steps);
        config.r = defaults->get("R", config.r);
        config.g = defaults->get("G", config.g);
        config.b = defaults->get("B", config.b);
        config.a = defaults->get("A", config.a);
        return 0;
}


int LinearBlurMain::save_defaults()
{
        defaults->update("RADIUS", config.radius);
        defaults->update("ANGLE", config.angle);
        defaults->update("STEPS", config.steps);
        defaults->update("R", config.r);
        defaults->update("G", config.g);
        defaults->update("B", config.b);
        defaults->update("A", config.a);
        defaults->save();
        return 0;
}



void LinearBlurMain::save_data(KeyFrame *keyframe)
{
        FileXML output;

// cause data to be stored directly in text
        output.set_shared_string(keyframe->data, MESSAGESIZE);
        output.tag.set_title("LINEARBLUR");

        output.tag.set_property("RADIUS", config.radius);
        output.tag.set_property("ANGLE", config.angle);
        output.tag.set_property("STEPS", config.steps);
        output.tag.set_property("R", config.r);
        output.tag.set_property("G", config.g);
        output.tag.set_property("B", config.b);
        output.tag.set_property("A", config.a);
        output.append_tag();
        output.tag.set_title("/LINEARBLUR");
        output.append_tag();
        output.terminate_string();
}

void LinearBlurMain::read_data(KeyFrame *keyframe)
{
        FileXML input;

        input.set_shared_string(keyframe->data, strlen(keyframe->data));

        int result = 0;

        while(!result)
        {
                result = input.read_tag();

                if(!result)
                {
                        if(input.tag.title_is("LINEARBLUR"))
                        {
                                config.radius = input.tag.get_property("RADIUS", config.radius);
                                config.angle = input.tag.get_property("ANGLE", config.angle);
                                config.steps = input.tag.get_property("STEPS", config.steps);
                                config.r = input.tag.get_property("R", config.r);
                                config.g = input.tag.get_property("G", config.g);
                                config.b = input.tag.get_property("B", config.b);
                                config.a = input.tag.get_property("A", config.a);
                        }
                }
        }
}

#ifdef HAVE_GL
static void draw_box(float x1, float y1, float x2, float y2)
{
        glBegin(GL_QUADS);
        glVertex3f(x1, y1, 0.0);
        glVertex3f(x2, y1, 0.0);
        glVertex3f(x2, y2, 0.0);
        glVertex3f(x1, y2, 0.0);
        glEnd();
}
#endif

int LinearBlurMain::handle_opengl()
{
#ifdef HAVE_GL
        get_output()->to_texture();
        get_output()->enable_opengl();
        get_output()->init_screen();
        get_output()->bind_texture(0);

        int is_yuv = cmodel_is_yuv(get_output()->get_color_model());
        glClearColor(0.0, 0.0, 0.0, 0.0);
        glClear(GL_COLOR_BUFFER_BIT);

// Draw unselected channels
        glEnable(GL_BLEND);
        glBlendFunc(GL_ONE, GL_ONE);
        glDrawBuffer(GL_BACK);
        if(!config.r || !config.g || !config.b || !config.a)
        {
                glColor4f(config.r ? 0 : 1, 
                        config.g ? 0 : 1, 
                        config.b ? 0 : 1, 
                        config.a ? 0 : 1);
                get_output()->draw_texture();
        }
        glAccum(GL_LOAD, 1.0);

// Blur selected channels
        float fraction = 1.0 / config.steps;
        for(int i = 0; i < config.steps; i++)
        {
                glClear(GL_COLOR_BUFFER_BIT);
                glColor4f(config.r ? 1 : 0, 
                        config.g ? 1 : 0, 
                        config.b ? 1 : 0, 
                        config.a ? 1 : 0);

                int w = get_output()->get_w();
                int h = get_output()->get_h();
                get_output()->draw_texture(0,
                        0,
                        w,
                        h,
                        layer_table[i].x,
                        get_output()->get_h() - layer_table[i].y,
                        layer_table[i].x + w,
                        get_output()->get_h() - layer_table[i].y - h,
                        1);


// Fill YUV black
                glDisable(GL_TEXTURE_2D);
                if(is_yuv)
                {
                        glColor4f(config.r ? 0.0 : 0, 
                                config.g ? 0.5 : 0, 
                                config.b ? 0.5 : 0, 
                                config.a ? 1.0 : 0);
                        float center_x1 = 0.0;
                        float center_x2 = get_output()->get_w();
                        float project_x1 = layer_table[i].x;
                        float project_x2 = layer_table[i].x + get_output()->get_w();
                        float project_y1 = layer_table[i].y;
                        float project_y2 = layer_table[i].y + get_output()->get_h();
                        if(project_x1 > 0)
                        {
                                center_x1 = project_x1;
                                draw_box(0, 0, project_x1, -get_output()->get_h());
                        }
                        if(project_x2 < get_output()->get_w())
                        {
                                center_x2 = project_x2;
                                draw_box(project_x2, 0, get_output()->get_w(), -get_output()->get_h());
                        }
                        if(project_y1 > 0)
                        {
                                draw_box(center_x1, 
                                        -get_output()->get_h(), 
                                        center_x2, 
                                        -get_output()->get_h() + project_y1);
                        }
                        if(project_y2 < get_output()->get_h())
                        {
                                draw_box(center_x1, 
                                        -get_output()->get_h() + project_y2, 
                                        center_x2, 
                                        0);
                        }
                }




                glAccum(GL_ACCUM, fraction);
                glEnable(GL_TEXTURE_2D);
                glColor4f(config.r ? 1 : 0, 
                        config.g ? 1 : 0, 
                        config.b ? 1 : 0, 
                        config.a ? 1 : 0);
        }

        glDisable(GL_BLEND);
        glDisable(GL_TEXTURE_2D);
        glReadBuffer(GL_BACK);
        glAccum(GL_RETURN, 1.0);

        glColor4f(1, 1, 1, 1);
        get_output()->set_opengl_state(VFrame::SCREEN);
#endif
}






LinearBlurPackage::LinearBlurPackage()
 : LoadPackage()
{
}




LinearBlurUnit::LinearBlurUnit(LinearBlurEngine *server, 
        LinearBlurMain *plugin)
 : LoadClient(server)
{
        this->plugin = plugin;
        this->server = server;
}


#define BLEND_LAYER(COMPONENTS, TYPE, TEMP, MAX, DO_YUV) \
{ \
        const int chroma_offset = (DO_YUV ? ((MAX + 1) / 2) : 0); \
        for(int j = pkg->y1; j < pkg->y2; j++) \
        { \
                TEMP *out_row = (TEMP*)plugin->accum + COMPONENTS * w * j; \
                int in_y = y_table[j]; \
 \
/* Blend image */ \
                TYPE *in_row = (TYPE*)plugin->input->get_rows()[in_y]; \
                for(int k = 0; k < w; k++) \
                { \
                        int in_x = x_table[k]; \
/* Blend pixel */ \
                        int in_offset = in_x * COMPONENTS; \
                        *out_row++ += in_row[in_offset]; \
                        if(DO_YUV) \
                        { \
                                *out_row++ += in_row[in_offset + 1]; \
                                *out_row++ += in_row[in_offset + 2]; \
                        } \
                        else \
                        { \
                                *out_row++ += in_row[in_offset + 1]; \
                                *out_row++ += in_row[in_offset + 2]; \
                        } \
                        if(COMPONENTS == 4) \
                                *out_row++ += in_row[in_offset + 3]; \
                } \
        } \
 \
/* Copy to output */ \
        if(i == plugin->config.steps - 1) \
        { \
                for(int j = pkg->y1; j < pkg->y2; j++) \
                { \
                        TEMP *in_row = (TEMP*)plugin->accum + COMPONENTS * w * j; \
                        TYPE *in_backup = (TYPE*)plugin->input->get_rows()[j]; \
                        TYPE *out_row = (TYPE*)plugin->output->get_rows()[j]; \
                        for(int k = 0; k < w; k++) \
                        { \
                                if(do_r) \
                                { \
                                        *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                        in_backup++; \
                                } \
                                else \
                                { \
                                        *out_row++ = *in_backup++; \
                                        in_row++; \
                                } \
 \
                                if(DO_YUV) \
                                { \
                                        if(do_g) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
 \
                                        if(do_b) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
                                else \
                                { \
                                        if(do_g) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
 \
                                        if(do_b) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
 \
                                if(COMPONENTS == 4) \
                                { \
                                        if(do_a) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
                        } \
                } \
        } \
}

void LinearBlurUnit::process_package(LoadPackage *package)
{
        LinearBlurPackage *pkg = (LinearBlurPackage*)package;
        int h = plugin->output->get_h();
        int w = plugin->output->get_w();

        int fraction = 0x10000 / plugin->config.steps;
        int do_r = plugin->config.r;
        int do_g = plugin->config.g;
        int do_b = plugin->config.b;
        int do_a = plugin->config.a;
        for(int i = 0; i < plugin->config.steps; i++)
        {
                int *x_table = plugin->scale_x_table[i];
                int *y_table = plugin->scale_y_table[i];

                switch(plugin->input->get_color_model())
                {
                        case BC_RGB_FLOAT:
                                BLEND_LAYER(3, float, float, 1, 0)
                                break;
                        case BC_RGB888:
                                BLEND_LAYER(3, uint8_t, int, 0xff, 0)
                                break;
                        case BC_RGBA_FLOAT:
                                BLEND_LAYER(4, float, float, 1, 0)
                                break;
                        case BC_RGBA8888:
                                BLEND_LAYER(4, uint8_t, int, 0xff, 0)
                                break;
                        case BC_RGB161616:
                                BLEND_LAYER(3, uint16_t, int, 0xffff, 0)
                                break;
                        case BC_RGBA16161616:
                                BLEND_LAYER(4, uint16_t, int, 0xffff, 0)
                                break;
                        case BC_YUV888:
                                BLEND_LAYER(3, uint8_t, int, 0xff, 1)
                                break;
                        case BC_YUVA8888:
                                BLEND_LAYER(4, uint8_t, int, 0xff, 1)
                                break;
                        case BC_YUV161616:
                                BLEND_LAYER(3, uint16_t, int, 0xffff, 1)
                                break;
                        case BC_YUVA16161616:
                                BLEND_LAYER(4, uint16_t, int, 0xffff, 1)
                                break;
                }
        }
}






LinearBlurEngine::LinearBlurEngine(LinearBlurMain *plugin, 
        int total_clients, 
        int total_packages)
 : LoadServer(total_clients, total_packages)
{
        this->plugin = plugin;
}

void LinearBlurEngine::init_packages()
{
        for(int i = 0; i < get_total_packages(); i++)
        {
                LinearBlurPackage *package = (LinearBlurPackage*)get_package(i);
                package->y1 = plugin->output->get_h() * i / get_total_packages();
                package->y2 = plugin->output->get_h() * (i + 1) / get_total_packages();
        }
}

LoadClient* LinearBlurEngine::new_client()
{
        return new LinearBlurUnit(this, plugin);
}

LoadPackage* LinearBlurEngine::new_package()
{
        return new LinearBlurPackage;
}

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