research.m1stereo.tv/gitweb/ - melted/blob - src/modules/avformat/factory.c

   1 /*
   2  * factory.c -- the factory method interfaces
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <string.h>
  22 #include <pthread.h>
  23
  24 #include <framework/mlt.h>
  25
  26 extern mlt_consumer consumer_avformat_init( mlt_profile profile, char *file );
  27 extern mlt_filter filter_avcolour_space_init( void *arg );
  28 extern mlt_filter filter_avdeinterlace_init( void *arg );
  29 extern mlt_filter filter_avresample_init( char *arg );
  30 extern mlt_producer producer_avformat_init( mlt_profile profile, char *file );
  31
  32 // ffmpeg Header files
  33 #include <avformat.h>
  34
  35 // A static flag used to determine if avformat has been initialised
  36 static int avformat_initialised = 0;
  37
  38 // A locking mutex
  39 static pthread_mutex_t avformat_mutex;
  40
  41 #if 0
  42 // These 3 functions should override the alloc functions in libavformat
  43 // but some formats or codecs seem to crash when used (wmv in particular)
  44
  45 void *av_malloc( unsigned int size )
  46 {
  47         return mlt_pool_alloc( size );
  48 }
  49
  50 void *av_realloc( void *ptr, unsigned int size )
  51 {
  52         return mlt_pool_realloc( ptr, size );
  53 }
  54
  55 void av_free( void *ptr )
  56 {
  57         return mlt_pool_release( ptr );
  58 }
  59 #endif
  60
  61 void avformat_destroy( void *ignore )
  62 {
  63         // Clean up
  64         // av_free_static( ); -XXX this is deprecated
  65
  66         // Destroy the mutex
  67         pthread_mutex_destroy( &avformat_mutex );
  68 }
  69
  70 void avformat_lock( )
  71 {
  72         // Lock the mutex now
  73         pthread_mutex_lock( &avformat_mutex );
  74 }
  75
  76 void avformat_unlock( )
  77 {
  78         // Unlock the mutex now
  79         pthread_mutex_unlock( &avformat_mutex );
  80 }
  81
  82 static void avformat_init( )
  83 {
  84         // Initialise avformat if necessary
  85         if ( avformat_initialised == 0 )
  86         {
  87                 avformat_initialised = 1;
  88                 pthread_mutex_init( &avformat_mutex, NULL );
  89                 av_register_all( );
  90                 mlt_factory_register_for_clean_up( NULL, avformat_destroy );
  91                 av_log_set_level( -1 );
  92         }
  93 }
  94
  95 void *mlt_create_producer( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
  96 {
  97         avformat_init( );
  98         if ( !strcmp( id, "avformat" ) )
  99                 return producer_avformat_init( profile, arg );
 100         return NULL;
 101 }
 102
 103 void *mlt_create_filter( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
 104 {
 105         avformat_init( );
 106         if ( !strcmp( id, "avcolour_space" ) )
 107                 return filter_avcolour_space_init( arg );
 108 #ifdef USE_MMX
 109         if ( !strcmp( id, "avdeinterlace" ) )
 110                 return filter_avdeinterlace_init( arg );
 111 #endif
 112         if ( !strcmp( id, "avresample" ) )
 113                 return filter_avresample_init( arg );
 114         return NULL;
 115 }
 116
 117 void *mlt_create_transition( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
 118 {
 119         return NULL;
 120 }
 121
 122 void *mlt_create_consumer( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
 123 {
 124         avformat_init( );
 125         if ( !strcmp( id, "avformat" ) )
 126                 return consumer_avformat_init( profile, arg );
 127         return NULL;
 128 }
 129