research.m1stereo.tv/gitweb/ - melted/blob - mlt++/src/MltFrame.cpp

   1 /**
   2  * MltFrame.cpp - MLT Wrapper
   3  * Copyright (C) 2004-2005 Charles Yates
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as published
   8  * by the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "MltFrame.h"
  22 #include "MltProducer.h"
  23 using namespace Mlt;
  24
  25 Frame::Frame( mlt_frame frame ) :
  26         instance( frame )
  27 {
  28         inc_ref( );
  29 }
  30
  31 Frame::Frame( Frame &frame ) :
  32         Mlt::Properties( frame ),
  33         instance( frame.get_frame( ) )
  34 {
  35         inc_ref( );
  36 }
  37
  38 Frame::~Frame( )
  39 {
  40         mlt_frame_close( instance );
  41 }
  42
  43 mlt_frame Frame::get_frame( )
  44 {
  45         return instance;
  46 }
  47
  48 mlt_properties Frame::get_properties( )
  49 {
  50         return mlt_frame_properties( get_frame( ) );
  51 }
  52
  53 uint8_t *Frame::get_image( mlt_image_format &format, int &w, int &h, int writable )
  54 {
  55         uint8_t *image = NULL;
  56         if ( get_double( "consumer_aspect_ratio" ) == 0.0 )
  57                 set( "consumer_aspect_ratio", 1.0 );
  58         mlt_frame_get_image( get_frame( ), &image, &format, &w, &h, writable );
  59         set( "format", format );
  60         set( "writable", writable );
  61         return image;
  62 }
  63
  64 unsigned char *Frame::fetch_image( mlt_image_format f, int w, int h, int writable )
  65 {
  66         uint8_t *image = NULL;
  67         if ( get_double( "consumer_aspect_ratio" ) == 0.0 )
  68                 set( "consumer_aspect_ratio", 1.0 );
  69         mlt_frame_get_image( get_frame( ), &image, &f, &w, &h, writable );
  70         set( "format", f );
  71         set( "writable", writable );
  72         return image;
  73 }
  74
  75 int16_t *Frame::get_audio( mlt_audio_format &format, int &frequency, int &channels, int &samples )
  76 {
  77         int16_t *audio = NULL;
  78         mlt_frame_get_audio( get_frame( ), &audio, &format, &frequency, &channels, &samples );
  79         return audio;
  80 }
  81
  82 unsigned char *Frame::get_waveform( int w, int h )
  83 {
  84         return mlt_frame_get_waveform( get_frame( ), w, h );
  85 }
  86
  87 Producer *Frame::get_original_producer( )
  88 {
  89         return new Producer( mlt_frame_get_original_producer( get_frame( ) ) );
  90 }