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         instance( frame )
  26 {
  27 }
  28
  29 Frame::Frame( Frame &frame ) :
  30         instance( frame.get_frame( ) )
  31 {
  32         inc_ref( );
  33 }
  34
  35 Frame::~Frame( )
  36 {
  37         mlt_frame_close( instance );
  38 }
  39
  40 mlt_frame Frame::get_frame( )
  41 {
  42         return instance;
  43 }
  44
  45 mlt_properties Frame::get_properties( )
  46 {
  47         return mlt_frame_properties( get_frame( ) );
  48 }
  49
  50 uint8_t *Frame::get_image( mlt_image_format &format, int &w, int &h, int writable )
  51 {
  52         uint8_t *image = NULL;
  53         if ( mlt_properties_get_int( get_properties( ), "consumer_aspect_ratio" ) == 0 )
  54                 mlt_properties_set_int( get_properties( ), "consumer_aspect_ratio", 1 );
  55         mlt_frame_get_image( get_frame( ), &image, &format, &w, &h, writable );
  56         set( "format", format );
  57         set( "writable", writable );
  58         return image;
  59 }
  60
  61 unsigned char *Frame::fetch_image( mlt_image_format f, int w, int h, int writable )
  62 {
  63         uint8_t *image = NULL;
  64         if ( mlt_properties_get_int( get_properties( ), "consumer_aspect_ratio" ) == 0 )
  65                 mlt_properties_set_int( get_properties( ), "consumer_aspect_ratio", 1 );
  66         mlt_frame_get_image( get_frame( ), &image, &f, &w, &h, writable );
  67         set( "format", f );
  68         set( "writable", writable );
  69         return image;
  70 }
  71
  72 int16_t *Frame::get_audio( mlt_audio_format &format, int &frequency, int &channels, int &samples )
  73 {
  74         int16_t *audio = NULL;
  75         mlt_frame_get_audio( get_frame( ), &audio, &format, &frequency, &channels, &samples );
  76         return audio;
  77 }
  78
  79 unsigned char *Frame::get_waveform( int w, int h )
  80 {
  81         return mlt_frame_get_waveform( get_frame( ), w, h );
  82 }
  83