hvirtual/cinelerra/aattachmentpoint.C

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#include "aattachmentpoint.h"
#include "datatype.h"
#include "edl.h"
#include "edlsession.h"
#include "playbackconfig.h"
#include "plugin.h"
#include "pluginserver.h"
#include "renderengine.h"
#include "transportque.h"

AAttachmentPoint::AAttachmentPoint(RenderEngine *renderengine, Plugin *plugin)
: AttachmentPoint(renderengine, plugin, TRACK_AUDIO)
{
        buffer_vector = 0;
        buffer_allocation = 0;
}

AAttachmentPoint::~AAttachmentPoint()
{
        delete_buffer_vector();
}

void AAttachmentPoint::delete_buffer_vector()
{
        if(buffer_vector)
        {
                for(int i = 0; i < virtual_plugins.total; i++)
                        delete [] buffer_vector[i];
                delete [] buffer_vector;
        }
        buffer_vector = 0;
        buffer_allocation = 0;
}

void AAttachmentPoint::new_buffer_vector(int total, int size)
{
        if(buffer_vector && size > buffer_allocation)
                delete_buffer_vector();

        if(!buffer_vector)
        {
                buffer_allocation = size;
                buffer_vector = new double*[virtual_plugins.total];
                for(int i = 0; i < virtual_plugins.total; i++)
                {
                        buffer_vector[i] = new double[buffer_allocation];
                }
        }
}

int AAttachmentPoint::get_buffer_size()
{
        return renderengine->config->aconfig->fragment_size;
// must be greater than value audio_read_length, calculated in PackageRenderer::create_engine
// if it is not, plugin's PluginClient::in_buffer_size is below the real maximum and
// we get a crush on rendering of audio plugins!
//      int audio_read_length = renderengine->command->get_edl()->session->sample_rate;
//      int fragment_size = renderengine->config->aconfig->fragment_size;
//      if(audio_read_length > fragment_size)
//              return audio_read_length;
//      else
//              return fragment_size;
}

void AAttachmentPoint::render(double *output, 
        int buffer_number,
        int64_t start_position, 
        int64_t len,
        int64_t sample_rate)
{
        if(!plugin_server || !plugin->on) return;

        if(plugin_server->multichannel)
        {
// Test against previous parameters for reuse of previous data
                if(is_processed &&
                        this->start_position == start_position && 
                        this->len == len && 
                        this->sample_rate == sample_rate)
                {
                        memcpy(output, buffer_vector[buffer_number], sizeof(double) * len);
                        return;
                }

// Update status
                this->start_position = start_position;
                this->len = len;
                this->sample_rate = sample_rate;
                is_processed = 1;

// Allocate buffer vector
                new_buffer_vector(virtual_plugins.total, len);

// Create temporary buffer vector with output argument substituted in
                double **output_temp = new double*[virtual_plugins.total];
                for(int i = 0; i < virtual_plugins.total; i++)
                {
                        if(i == buffer_number)
                                output_temp[i] = output;
                        else
                                output_temp[i] = buffer_vector[i];
                }

// Process plugin
                plugin_servers.values[0]->process_buffer(output_temp,
                        start_position,
                        len,
                        sample_rate,
                        plugin->length *
                                sample_rate /
                                renderengine->edl->session->sample_rate,
                        renderengine->command->get_direction());

// Delete temporary buffer vector
                delete [] output_temp;
        }
        else
        {
// Process plugin
                double *output_temp[1];
                output_temp[0] = output;
//printf("AAttachmentPoint::render 1\n");
                plugin_servers.values[buffer_number]->process_buffer(output_temp,
                        start_position,
                        len,
                        sample_rate,
                        plugin->length *
                                sample_rate /
                                renderengine->edl->session->sample_rate,
                        renderengine->command->get_direction());
//printf("AAttachmentPoint::render 10\n");
        }
}

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