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 using namespace Mlt;
  23
  24 Frame::Frame( mlt_frame frame ) :
  25         destroy( true ),
  26         instance( frame )
  27 {
  28 }
  29
  30 Frame::Frame( Frame &frame ) :
  31         destroy( false ),
  32         instance( frame.get_frame( ) )
  33 {
  34 }
  35
  36 Frame::~Frame( )
  37 {
  38         if ( destroy )
  39                 mlt_frame_close( instance );
  40 }
  41
  42 mlt_frame Frame::get_frame( )
  43 {
  44         return instance;
  45 }
  46
  47 mlt_properties Frame::get_properties( )
  48 {
  49         return mlt_frame_properties( get_frame( ) );
  50 }
  51
  52 uint8_t *Frame::get_image( mlt_image_format &format, int &w, int &h, int writable )
  53 {
  54         uint8_t *image = NULL;
  55         if ( mlt_properties_get_int( get_properties( ), "consumer_aspect_ratio" ) == 0 )
  56                 mlt_properties_set_int( get_properties( ), "consumer_aspect_ratio", 1 );
  57         mlt_frame_get_image( get_frame( ), &image, &format, &w, &h, writable );
  58         set( "format", format );
  59         set( "writable", writable );
  60         return image;
  61 }
  62
  63 unsigned char *Frame::fetch_image( mlt_image_format f, int w, int h, int writable )
  64 {
  65         uint8_t *image = NULL;
  66         if ( mlt_properties_get_int( get_properties( ), "consumer_aspect_ratio" ) == 0 )
  67                 mlt_properties_set_int( get_properties( ), "consumer_aspect_ratio", 1 );
  68         mlt_frame_get_image( get_frame( ), &image, &f, &w, &h, writable );
  69         set( "format", f );
  70         set( "writable", writable );
  71         return image;
  72 }
  73
  74 int16_t *Frame::get_audio( mlt_audio_format &format, int &frequency, int &channels, int &samples )
  75 {
  76         int16_t *audio = NULL;
  77         mlt_frame_get_audio( get_frame( ), &audio, &format, &frequency, &channels, &samples );
  78         return audio;
  79 }
  80
  81