pluginserver.C

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#include "amodule.h"
#include "atrack.h"
#include "attachmentpoint.h"
#include "autoconf.h"
#include "bcsignals.h"
#include "cplayback.h"
#include "cwindow.h"
#include "edl.h"
#include "edlsession.h"
#include "floatautos.h"
#include "localsession.h"
#include "mainprogress.h"
#include "mainundo.h"
#include "menueffects.h"
#include "mwindow.h"
#include "mwindowgui.h"
#include "playbackengine.h"
#include "plugin.h"
#include "pluginaclient.h"
#include "pluginaclientlad.h"
#include "pluginclient.h"
#include "plugincommands.h"
#include "pluginserver.h"
#include "pluginvclient.h"
#include "preferences.h"
#include "sema.h"
#include "mainsession.h"
#include "trackcanvas.h"
#include "transportque.h"
#include "vframe.h"
#include "virtualanode.h"
#include "virtualvnode.h"
#include "vmodule.h"
#include "vtrack.h"


#include <sys/types.h>
#include <sys/wait.h>
#include <dlfcn.h>


PluginServer::PluginServer()
{
        reset_parameters();
        modules = new ArrayList<Module*>;
        nodes = new ArrayList<VirtualNode*>;
}

PluginServer::PluginServer(char *path)
{
        reset_parameters();
        set_path(path);
        modules = new ArrayList<Module*>;
        nodes = new ArrayList<VirtualNode*>;
}

PluginServer::PluginServer(PluginServer &that)
{
        reset_parameters();

        if(that.title)
        {
                title = new char[strlen(that.title) + 1];
                strcpy(title, that.title);
        }

        if(that.path)
        {
                path = new char[strlen(that.path) + 1];
                strcpy(path, that.path);
        }

        modules = new ArrayList<Module*>;
        nodes = new ArrayList<VirtualNode*>;

        attachment = that.attachment;   
        realtime = that.realtime;
        multichannel = that.multichannel;
        preferences = that.preferences;
        synthesis = that.synthesis;
        audio = that.audio;
        video = that.video;
        theme = that.theme;
        fileio = that.fileio;
        uses_gui = that.uses_gui;
        mwindow = that.mwindow;
        keyframe = that.keyframe;
        plugin_fd = that.plugin_fd;
        new_plugin = that.new_plugin;

        is_lad = that.is_lad;
        lad_descriptor = that.lad_descriptor;
        lad_descriptor_function = that.lad_descriptor_function;
}

PluginServer::~PluginServer()
{
        close_plugin();
        if(path) delete [] path;
        if(title) delete [] title;
        if(modules) delete modules;
        if(nodes) delete nodes;
        if(picon) delete picon;
}

// Done only once at creation
int PluginServer::reset_parameters()
{
        mwindow = 0;
        keyframe = 0;
        prompt = 0;
        cleanup_plugin();
        plugin_fd = 0;
        autos = 0;
        plugin = 0;
        edl = 0;
        preferences = 0;
        title = 0;
        path = 0;
        audio = video = theme = 0;
        uses_gui = 0;
        realtime = multichannel = fileio = 0;
        synthesis = 0;
        start_auto = end_auto = 0;
        picon = 0;
        transition = 0;
        new_plugin = 0;
        client = 0;

        is_lad = 0;
        lad_descriptor_function = 0;
        lad_descriptor = 0;
}


// Done every time the plugin is opened or closed
int PluginServer::cleanup_plugin()
{
        in_buffer_size = out_buffer_size = 0;
        total_in_buffers = total_out_buffers = 0;
        error_flag = 0;
        written_samples = 0;
        shared_buffers = 0;
        new_buffers = 0;
        written_samples = written_frames = 0;
        gui_on = 0;
        plugin = 0;
        plugin_open = 0;
}

void PluginServer::set_mwindow(MWindow *mwindow)
{
        this->mwindow = mwindow;
}

void PluginServer::set_attachmentpoint(AttachmentPoint *attachmentpoint)
{
        this->attachmentpoint = attachmentpoint;
}

void PluginServer::set_keyframe(KeyFrame *keyframe)
{
        this->keyframe = keyframe;
}

void PluginServer::set_prompt(MenuEffectPrompt *prompt)
{
        this->prompt = prompt;
}


int PluginServer::set_path(char *path)
{
        if(this->path) delete [] this->path;
        this->path = new char[strlen(path) + 1];
        strcpy(this->path, path);
}

void PluginServer::set_title(char *string)
{
        if(title) delete [] title;
        title = new char[strlen(string) + 1];
        strcpy(title, string);
}

void PluginServer::generate_display_title(char *string)
{
        if(plugin && plugin->track) 
                sprintf(string, "%s: %s", plugin->track->title, title);
        else
                strcpy(string, title);
}

// Open plugin for signal processing
int PluginServer::open_plugin(int master, 
        Preferences *preferences,
        EDL *edl, 
        Plugin *plugin,
        int lad_index)
{
        if(plugin_open) return 0;

        this->preferences = preferences;
        this->plugin = plugin;
        this->edl = edl;



        if(!new_plugin && !plugin_fd) plugin_fd = dlopen(path, RTLD_NOW);

        if(!new_plugin && !plugin_fd)
        {
// If the dlopen failed it may still be an executable tool for a specific
// file format, in which case we just store the path.
                set_title(path);
                char string[BCTEXTLEN];
                strcpy(string, dlerror());

                if(!strstr(string, "executable"))
                        printf("PluginServer::open_plugin: %s\n", string);
                
                return 0;
        }


        if(!new_plugin && !lad_descriptor)
        {
                new_plugin = (PluginClient* (*)(PluginServer*))dlsym(plugin_fd, "new_plugin");

// Probably a LAD plugin but we're not going to instantiate it here anyway.
                if(!new_plugin)
                {
                        lad_descriptor_function = (LADSPA_Descriptor_Function)dlsym(
                                plugin_fd,
                                "ladspa_descriptor");

                        if(!lad_descriptor_function)
                        {
// Not a recognized plugin
                                fprintf(stderr, "PluginServer::open_plugin: new_plugin undefined in %s\n", path);
                                dlclose(plugin_fd);
                                plugin_fd = 0;
                                return PLUGINSERVER_NOT_RECOGNIZED;
                        }
                        else
                        {
// LAD plugin,  Load the descriptor and get parameters.
                                is_lad = 1;
                                if(lad_index >= 0)
                                {
                                        lad_descriptor = lad_descriptor_function(lad_index);
                                }

// make plugin initializer handle the subplugins in the LAD plugin or stop
// trying subplugins.
                                if(!lad_descriptor)
                                {
                                        dlclose(plugin_fd);
                                        plugin_fd = 0;
                                        return PLUGINSERVER_IS_LAD;
                                }
                        }
                }
        }


        if(is_lad)
        {
                client = new PluginAClientLAD(this);
        }
        else
        {
                client = new_plugin(this);
        }

        realtime = client->is_realtime();
        audio = client->is_audio();
        video = client->is_video();
        theme = client->is_theme();
        fileio = client->is_fileio();
        uses_gui = client->uses_gui();
        multichannel = client->is_multichannel();
        synthesis = client->is_synthesis();
        transition = client->is_transition();
        set_title(client->plugin_title());

        if(master)
        {
                picon = client->new_picon();
        }

//printf("PluginServer::open_plugin 2\n");
        plugin_open = 1;
        return PLUGINSERVER_OK;
}

int PluginServer::close_plugin()
{
        if(!plugin_open) return 0;

        int plugin_status, result;
        if(client) delete client;

// shared object is persistent since plugin deletion would unlink its own object
//      dlclose(plugin_fd);
        plugin_open = 0;

        cleanup_plugin();

        return 0;
}

void PluginServer::client_side_close()
{
// Last command executed in client thread
        if(plugin)
                mwindow->hide_plugin(plugin, 1);
        else
        if(prompt)
        {
                prompt->lock_window();
                prompt->set_done(1);
                prompt->unlock_window();
        }
}

int PluginServer::init_realtime(int realtime_sched,
                int total_in_buffers, 
                int buffer_size)
{
SET_TRACE
        if(!plugin_open) return 0;
SET_TRACE
// set for realtime priority
// initialize plugin
// Call start_realtime
        client->plugin_init_realtime(realtime_sched, 
                total_in_buffers, 
                buffer_size);
SET_TRACE
}


// Replaced by pull method but still needed for transitions
void PluginServer::process_transition(VFrame *input, 
                VFrame *output, 
                int64_t current_position,
                int64_t total_len)
{
        if(!plugin_open) return;
        PluginVClient *vclient = (PluginVClient*)client;

        vclient->source_position = current_position;
        vclient->source_start = 0;
        vclient->total_len = total_len;
        vclient->process_realtime(input, output);
        vclient->age_temp();
}

void PluginServer::process_transition(double *input, 
                double *output,
                int64_t current_position, 
                int64_t fragment_size,
                int64_t total_len)
{
        if(!plugin_open) return;
        PluginAClient *aclient = (PluginAClient*)client;

        aclient->source_position = current_position;
        aclient->total_len = total_len;
        aclient->source_start = 0;
        aclient->process_realtime(fragment_size,
                input, 
                output);
}


void PluginServer::process_buffer(VFrame **frame, 
        int64_t current_position,
        double frame_rate,
        int64_t total_len,
        int direction)
{
        if(!plugin_open) return;
        PluginVClient *vclient = (PluginVClient*)client;

        vclient->source_position = current_position;
        vclient->total_len = total_len;
        vclient->frame_rate = frame_rate;
        vclient->source_start = (int64_t)(plugin ? 
                plugin->startproject * 
                frame_rate /
                vclient->project_frame_rate :
                0);
        vclient->direction = direction;

        if(multichannel)
        {
                vclient->process_buffer(frame, current_position, frame_rate);
        }
        else
        {
                vclient->process_buffer(frame[0], current_position, frame_rate);
        }


    vclient->age_temp();
}

void PluginServer::process_buffer(double **buffer,
        int64_t current_position,
        int64_t fragment_size,
        int64_t sample_rate,
        int64_t total_len,
        int direction)
{
        if(!plugin_open) return;
        PluginAClient *aclient = (PluginAClient*)client;
        aclient->source_position = current_position;
        aclient->total_len = total_len;
        aclient->sample_rate = sample_rate;
        if(plugin)
                aclient->source_start = plugin->startproject * 
                        sample_rate /
                        aclient->project_sample_rate;
        aclient->direction = direction;
        if(multichannel)
                aclient->process_buffer(fragment_size, 
                        buffer, 
                        current_position, 
                        sample_rate);
        else
        {
                aclient->process_buffer(fragment_size, 
                        buffer[0], 
                        current_position, 
                        sample_rate);
        }
}


void PluginServer::send_render_gui(void *data)
{
//printf("PluginServer::send_render_gui 1 %p\n", attachmentpoint);
        if(attachmentpoint) attachmentpoint->render_gui(data);
}

void PluginServer::send_render_gui(void *data, int size)
{
//printf("PluginServer::send_render_gui 1 %p\n", attachmentpoint);
        if(attachmentpoint) attachmentpoint->render_gui(data, size);
}

void PluginServer::render_gui(void *data)
{
        if(client) client->plugin_render_gui(data);
}

void PluginServer::render_gui(void *data, int size)
{
        if(client) client->plugin_render_gui(data, size);
}

MainProgressBar* PluginServer::start_progress(char *string, int64_t length)
{
        mwindow->gui->lock_window();
        MainProgressBar *result = mwindow->mainprogress->start_progress(string, length);
        mwindow->gui->unlock_window();
        return result;
}

int64_t PluginServer::get_written_samples()
{
        if(!plugin_open) return 0;
        return written_samples;
}

int64_t PluginServer::get_written_frames()
{
        if(!plugin_open) return 0;
        return written_frames;
}










// ======================= Non-realtime plugin

int PluginServer::get_parameters(int64_t start, int64_t end, int channels)      
{
        if(!plugin_open) return 0;

        client->start = start;
        client->end = end;
        client->source_start = start;
        client->total_len = end - start;
        client->total_in_buffers = channels;
        return client->plugin_get_parameters();
}

int PluginServer::set_interactive()
{
        if(!plugin_open) return 0;
        client->set_interactive();
        return 0;
}

void PluginServer::append_module(Module *module)
{
        modules->append(module);
}

void PluginServer::append_node(VirtualNode *node)
{
        nodes->append(node);
}

void PluginServer::reset_nodes()
{
        nodes->remove_all();
}

int PluginServer::set_error()
{
        error_flag = 1;
        return 0;
}

int PluginServer::set_realtime_sched()
{
        struct sched_param params;
        params.sched_priority = 1;
        return 0;
}


int PluginServer::process_loop(VFrame **buffers, int64_t &write_length)
{
        if(!plugin_open) return 1;
        return client->plugin_process_loop(buffers, write_length);
}

int PluginServer::process_loop(double **buffers, int64_t &write_length)
{
        if(!plugin_open) return 1;
        return client->plugin_process_loop(buffers, write_length);
}


int PluginServer::start_loop(int64_t start, 
        int64_t end, 
        int64_t buffer_size, 
        int total_buffers)
{
        if(!plugin_open) return 0;
        client->plugin_start_loop(start, end, buffer_size, total_buffers);
        return 0;
}

int PluginServer::stop_loop()
{
        if(!plugin_open) return 0;
        return client->plugin_stop_loop();
}

int PluginServer::read_frame(VFrame *buffer, 
        int channel, 
        int64_t start_position)
{
        ((VModule*)modules->values[channel])->render(buffer,
                start_position,
                PLAY_FORWARD,
                mwindow->edl->session->frame_rate,
                0,
                0);
        return 0;
}

int PluginServer::read_samples(double *buffer, 
        int channel, 
        int64_t start_position, 
        int64_t total_samples)
{
        ((AModule*)modules->values[channel])->render(buffer, 
                start_position,
                total_samples, 
                PLAY_FORWARD,
                mwindow->edl->session->sample_rate,
                0);
        return 0;
}

int PluginServer::read_frame(VFrame *buffer, 
        int channel, 
        int64_t start_position, 
        double frame_rate)
{
// Data source depends on whether we're part of a virtual console or a
// plugin array.
//     VirtualNode
//     Module
// If we're a VirtualNode, read_data in the virtual plugin node handles
//     backward propogation and produces the data.
// If we're a Module, render in the module produces the data.

        if(!multichannel) channel = 0;


        if(nodes->total > channel)
        {
                return ((VirtualVNode*)nodes->values[channel])->read_data(buffer,
                        start_position,
                        frame_rate);
        }
        else
        if(modules->total > channel)
        {
                return ((VModule*)modules->values[channel])->render(buffer,
                        start_position,
                        PLAY_FORWARD,
                        frame_rate,
                        0,
                        0);
        }
        else
        {
                printf("PluginServer::read_frame no object available for channel=%d\n",
                        channel);
        }
//printf("PluginServer::read_frame 10\n");

        return -1;
}

int PluginServer::read_samples(double *buffer,
        int channel,
        int64_t sample_rate,
        int64_t start_position, 
        int64_t len)
{
        if(!multichannel) channel = 0;

        if(nodes->total > channel)
                return ((VirtualANode*)nodes->values[channel])->read_data(buffer,
                        start_position,
                        len,
                        sample_rate);
        else
        if(modules->total > channel)
                return ((AModule*)modules->values[channel])->render(buffer,
                        start_position,
                        len,
                        PLAY_FORWARD,
                        sample_rate,
                        0);
        else
        {
                printf("PluginServer::read_samples no object available for channel=%d\n",
                        channel);
        }

        return -1;
}




















// Called by client
int PluginServer::get_gui_status()
{
        if(plugin)
                return plugin->show ? GUI_ON : GUI_OFF;
        else
                return GUI_OFF;
}

void PluginServer::raise_window()
{
        if(!plugin_open) return;
        client->raise_window();
}

void PluginServer::show_gui()
{
        if(!plugin_open) return;
        client->smp = preferences->processors - 1;
        if(plugin) client->total_len = plugin->length;
        if(plugin) client->source_start = plugin->startproject;
        if(video)
        {
                client->source_position = Units::to_int64(
                        mwindow->edl->local_session->get_selectionstart(1) * 
                                mwindow->edl->session->frame_rate);
        }
        else
        if(audio)
        {
                client->source_position = Units::to_int64(
                        mwindow->edl->local_session->get_selectionstart(1) * 
                                mwindow->edl->session->sample_rate);
        }
        client->update_display_title();
        client->show_gui();
}

void PluginServer::update_gui()
{
        if(!plugin_open || !plugin) return;

        client->total_len = plugin->length;
        client->source_start = plugin->startproject;
        if(video)
        {
                client->source_position = Units::to_int64(
                        mwindow->edl->local_session->get_selectionstart(1) * 
                                mwindow->edl->session->frame_rate);
        }
        else
        if(audio)
        {
                client->source_position = Units::to_int64(
                        mwindow->edl->local_session->get_selectionstart(1) * 
                                mwindow->edl->session->sample_rate);
        }
        client->update_gui();
}

void PluginServer::update_title()
{
        if(!plugin_open) return;
        
        client->update_display_title();
}


int PluginServer::set_string(char *string)
{
        if(!plugin_open) return 0;

        client->set_string_client(string);
        return 0;
}


// ============================= queries

int PluginServer::get_samplerate()
{
        if(!plugin_open) return 0;
        if(audio)
        {
                return client->get_samplerate();
        }
        else
        if(mwindow)
                return mwindow->edl->session->sample_rate;
        else
        {
                printf("PluginServer::get_samplerate audio and mwindow == NULL\n");
                return 1;
        }
}


double PluginServer::get_framerate()
{
        if(!plugin_open) return 0;
        if(video)
        {
                return client->get_framerate();
        }
        else
        if(mwindow)
                return mwindow->edl->session->frame_rate;
        else 
        {
                printf("PluginServer::get_framerate video and mwindow == NULL\n");
                return 1;
        }
}

int PluginServer::get_project_samplerate()
{
        if(mwindow)
                return mwindow->edl->session->sample_rate;
        else
        if(edl)
                return edl->session->sample_rate;
        else
        {
                printf("PluginServer::get_project_samplerate mwindow and edl are NULL.\n");
                return 1;
        }
}

double PluginServer::get_project_framerate()
{
        if(mwindow)
                return mwindow->edl->session->frame_rate;
        else
        if(edl)
                return edl->session->frame_rate;
        else
        {
                printf("PluginServer::get_project_framerate mwindow and edl are NULL.\n");
                return 1;
        }
}



int PluginServer::detach_buffers()
{
        ring_buffers_out.remove_all();
        offset_out_render.remove_all();
        double_buffer_out_render.remove_all();
        realtime_out_size.remove_all();

        ring_buffers_in.remove_all();
        offset_in_render.remove_all();
        double_buffer_in_render.remove_all();
        realtime_in_size.remove_all();
        
        out_buffer_size = 0;
        shared_buffers = 0;
        total_out_buffers = 0;
        in_buffer_size = 0;
        total_in_buffers = 0;
        return 0;
}

int PluginServer::arm_buffer(int buffer_number, 
                int64_t offset_in, 
                int64_t offset_out,
                int double_buffer_in,
                int double_buffer_out)
{
        offset_in_render.values[buffer_number] = offset_in;
        offset_out_render.values[buffer_number] = offset_out;
        double_buffer_in_render.values[buffer_number] = double_buffer_in;
        double_buffer_out_render.values[buffer_number] = double_buffer_out;
}


int PluginServer::set_automation(FloatAutos *autos, FloatAuto **start_auto, FloatAuto **end_auto, int reverse)
{
        this->autos = autos;
        this->start_auto = start_auto;
        this->end_auto = end_auto;
        this->reverse = reverse;
}



void PluginServer::save_data(KeyFrame *keyframe)
{
        if(!plugin_open) return;
        client->save_data(keyframe);
}

KeyFrame* PluginServer::get_prev_keyframe(int64_t position)
{
        KeyFrame *result = 0;
        if(plugin)
                result = plugin->get_prev_keyframe(position, client->direction);
        else
                result = keyframe;
        return result;
}

KeyFrame* PluginServer::get_next_keyframe(int64_t position)
{
        KeyFrame *result = 0;
        if(plugin)
                result = plugin->get_next_keyframe(position, client->direction);
        else
                result = keyframe;
        return result;
}

KeyFrame* PluginServer::get_keyframe()
{
        if(plugin)
                return plugin->get_keyframe();
        else
                return keyframe;
}


int PluginServer::get_interpolation_type()
{
        return plugin->edl->session->interpolation_type;
}

Theme* PluginServer::new_theme()
{
        if(theme)
        {
                return client->new_theme();
        }
        else
                return 0;
}

Theme* PluginServer::get_theme()
{
        if(mwindow) return mwindow->theme;
        printf("PluginServer::get_theme mwindow not set\n");
        return 0;
}


// Called when plugin interface is tweeked
void PluginServer::sync_parameters()
{
        if(video) mwindow->restart_brender();
        mwindow->sync_parameters();
        if(mwindow->edl->session->auto_conf->plugins)
        {
                mwindow->gui->lock_window("PluginServer::sync_parameters");
                mwindow->gui->canvas->draw_overlays();
                mwindow->gui->canvas->flash();
                mwindow->gui->unlock_window();
        }
}



void PluginServer::dump()
{
        printf("    PluginServer %s %s\n", path, title);
}

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