--- /dev/null
+/**
+ * MltPushConsumer.cpp - MLT Wrapper
+ * Copyright (C) 2004-2005 Charles Yates
+ * Author: Charles Yates <charles.yates@pandora.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "MltPushConsumer.h"
+#include "MltFilter.h"
+using namespace Mlt;
+
+namespace Mlt
+{
+ class PushPrivate
+ {
+ public:
+ PushPrivate( )
+ {
+ }
+ };
+}
+
+static void filter_destructor( void *arg )
+{
+ Filter *filter = ( Filter * )arg;
+ delete filter;
+}
+
+PushConsumer::PushConsumer( char *id , char *service ) :
+ Consumer( id, service ),
+ m_private( new PushPrivate( ) )
+{
+ if ( is_valid( ) )
+ {
+ // Set up push mode (known as put mode in mlt)
+ set( "real_time", 0 );
+ set( "put_mode", 1 );
+ set( "terminate_on_pause", 0 );
+ set( "buffer", 0 );
+
+ // We might need resize and rescale filters so we'll create them now
+ // NB: Try to use the best rescaler available here
+ Filter *resize = new Filter( "resize" );
+ Filter *rescale = new Filter( "mcrescale" );
+ if ( !rescale->is_valid( ) )
+ {
+ delete rescale;
+ rescale = new Filter( "gtkrescale" );
+ }
+ if ( !rescale->is_valid( ) )
+ {
+ delete rescale;
+ rescale = new Filter( "rescale" );
+ }
+
+ Filter *convert = new Filter( "avcolour_space" );
+
+ set( "filter_convert", convert, 0, filter_destructor );
+ set( "filter_resize", resize, 0, filter_destructor );
+ set( "filter_rescale", rescale, 0, filter_destructor );
+ }
+}
+
+PushConsumer::~PushConsumer( )
+{
+}
+
+void PushConsumer::set_render( int width, int height, double aspect_ratio )
+{
+ set( "render_width", width );
+ set( "render_height", height );
+ set( "render_aspect_ratio", aspect_ratio );
+}
+
+int PushConsumer::connect( Service &service )
+{
+ return -1;
+}
+
+int PushConsumer::push( Frame *frame )
+{
+ frame->inc_ref( );
+
+ // Here we have the option to process the frame at a render resolution (this will
+ // typically be PAL or NTSC) prior to scaling according to the consumers profile
+ // This is done to optimise quality, esp. with regard to compositing positions
+ if ( get_int( "render_width" ) )
+ {
+ // Process the projects render resolution first
+ mlt_image_format format = mlt_image_yuv422;
+ int w = get_int( "render_width" );
+ int h = get_int( "render_height" );
+ frame->set( "consumer_aspect_ratio", get_double( "render_aspect_ratio" ) );
+ frame->set( "consumer_deinterlace", get_int( "deinterlace" ) );
+ frame->set( "deinterlace_method", get_int( "deinterlace_method" ) );
+ frame->set( "rescale.interp", get( "rescale" ) );
+
+ // Render the frame
+ frame->get_image( format, w, h );
+
+ // Now set up the post image scaling
+ Filter *convert = ( Filter * )get_data( "filter_convert" );
+ mlt_filter_process( convert->get_filter( ), frame->get_frame( ) );
+ Filter *rescale = ( Filter * )get_data( "filter_rescale" );
+ mlt_filter_process( rescale->get_filter( ), frame->get_frame( ) );
+ Filter *resize = ( Filter * )get_data( "filter_resize" );
+ mlt_filter_process( resize->get_filter( ), frame->get_frame( ) );
+ }
+
+ return mlt_consumer_put_frame( ( mlt_consumer )get_service( ), frame->get_frame( ) );
+}
+
+int PushConsumer::push( Frame &frame )
+{
+ return push( &frame );
+}
+
+int PushConsumer::drain( )
+{
+ return 0;
+}
+
+// Convenience function - generates a frame with an image of a given size
+Frame *PushConsumer::construct( int size )
+{
+ mlt_frame f = mlt_frame_init( );
+ Frame *frame = new Frame( f );
+ uint8_t *buffer = ( uint8_t * )mlt_pool_alloc( size );
+ frame->set( "image", buffer, size, mlt_pool_release );
+ return frame;
+}
+
--- /dev/null
+/**
+ * MltPushConsumer.h - MLT Wrapper
+ * Copyright (C) 2004-2005 Charles Yates
+ * Author: Charles Yates <charles.yates@pandora.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef MLTPP_PUSH_CONSUMER_H
+#define MLTPP_PUSH_CONSUMER_H
+
+#include "MltConsumer.h"
+
+namespace Mlt
+{
+ class Frame;
+ class Service;
+ class PushPrivate;
+
+ class PushConsumer : public Consumer
+ {
+ private:
+ PushPrivate *m_private;
+ public:
+ PushConsumer( char *id , char *service = NULL );
+ virtual ~PushConsumer( );
+ void set_render( int width, int height, double aspect_ratio );
+ virtual int connect( Service &service );
+ int push( Frame *frame );
+ int push( Frame &frame );
+ int drain( );
+ Frame *construct( int );
+ };
+}
+
+#endif