research.m1stereo.tv/gitweb/ - melted/blob - src/modules/kino/kino_wrapper.cc

   1 /*
   2  * kino_wrapper.cc -- c wrapper for kino file handler
   3  * Copyright (C) 2005 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * 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 "config.h"
  22
  23 #include <string.h>
  24 #include <stdlib.h>
  25
  26 #include "kino_wrapper.h"
  27 #include "filehandler.h"
  28
  29 extern "C"
  30 {
  31
  32 #include <framework/mlt_pool.h>
  33
  34 struct kino_wrapper_s
  35 {
  36         FileHandler *handler;
  37         int is_pal;
  38 };
  39
  40 kino_wrapper kino_wrapper_init( )
  41 {
  42         kino_wrapper self = ( kino_wrapper )malloc( sizeof( kino_wrapper_s ) );
  43         if ( self != NULL )
  44                 self->handler = NULL;
  45         return self;
  46 }
  47
  48 int kino_wrapper_open( kino_wrapper self, char *src )
  49 {
  50         if ( self != NULL )
  51         {
  52                 // Rough file determination based on file type
  53                 if ( strncasecmp( strrchr( src, '.' ), ".avi", 4 ) == 0 )
  54                         self->handler = new AVIHandler( );
  55                 else if ( strncasecmp( strrchr( src, '.' ), ".dv", 3 ) == 0 || strncasecmp( strrchr( src, '.' ), ".dif", 4 ) == 0 )
  56                         self->handler = new RawHandler( );
  57                 #ifdef HAVE_LIBQUICKTIME
  58                 else if ( strncasecmp( strrchr( src, '.' ), ".mov", 4 ) == 0 )
  59                         self->handler = new QtHandler( );
  60                 #endif
  61
  62                 // Open the file if we have a handler
  63                 if ( self->handler != NULL )
  64                         if ( !self->handler->Open( src ) )
  65                                 self = NULL;
  66
  67                 // Check the first frame to see if it's PAL or NTSC
  68                 if ( self != NULL && self->handler != NULL )
  69                 {
  70                         uint8_t *data = ( uint8_t * )mlt_pool_alloc( 144000 );
  71                         if ( self->handler->GetFrame( data, 0 ) == 0 )
  72                                 self->is_pal = data[3] & 0x80;
  73                         else
  74                                 self = NULL;
  75                         mlt_pool_release( data );
  76                 }
  77         }
  78
  79         return kino_wrapper_is_open( self );
  80 }
  81
  82 int kino_wrapper_get_frame_count( kino_wrapper self )
  83 {
  84         return self != NULL && self->handler != NULL ? self->handler->GetTotalFrames( ) : 0;
  85 }
  86
  87 int kino_wrapper_is_open( kino_wrapper self )
  88 {
  89         return self != NULL && self->handler != NULL ? self->handler->FileIsOpen( ) : 0;
  90 }
  91
  92 int kino_wrapper_is_pal( kino_wrapper self )
  93 {
  94         return self != NULL ? self->is_pal : 0;
  95 }
  96
  97 int kino_wrapper_get_frame( kino_wrapper self, uint8_t *data, int index )
  98 {
  99         return self != NULL && self->handler != NULL ? !self->handler->GetFrame( data, index ) : 0;
 100 }
 101
 102 void kino_wrapper_close( kino_wrapper self )
 103 {
 104         if ( self )
 105                 delete self->handler;
 106         free( self );
 107 }
 108
 109 }
 110
 111