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 #include <limits.h>
  24
  25 #include <framework/mlt.h>
  26
  27 extern mlt_consumer consumer_avformat_init( mlt_profile profile, char *file );
  28 extern mlt_filter filter_avcolour_space_init( void *arg );
  29 extern mlt_filter filter_avdeinterlace_init( void *arg );
  30 extern mlt_filter filter_avresample_init( char *arg );
  31 extern mlt_producer producer_avformat_init( mlt_profile profile, char *file );
  32
  33 // ffmpeg Header files
  34 #include <avformat.h>
  35
  36 // A static flag used to determine if avformat has been initialised
  37 static int avformat_initialised = 0;
  38
  39 // A locking mutex
  40 static pthread_mutex_t avformat_mutex;
  41
  42 #if 0
  43 // These 3 functions should override the alloc functions in libavformat
  44 // but some formats or codecs seem to crash when used (wmv in particular)
  45
  46 void *av_malloc( unsigned int size )
  47 {
  48         return mlt_pool_alloc( size );
  49 }
  50
  51 void *av_realloc( void *ptr, unsigned int size )
  52 {
  53         return mlt_pool_realloc( ptr, size );
  54 }
  55
  56 void av_free( void *ptr )
  57 {
  58         return mlt_pool_release( ptr );
  59 }
  60 #endif
  61
  62 void avformat_destroy( void *ignore )
  63 {
  64         // Clean up
  65         // av_free_static( ); -XXX this is deprecated
  66
  67         // Destroy the mutex
  68         pthread_mutex_destroy( &avformat_mutex );
  69 }
  70
  71 void avformat_lock( )
  72 {
  73         // Lock the mutex now
  74         pthread_mutex_lock( &avformat_mutex );
  75 }
  76
  77 void avformat_unlock( )
  78 {
  79         // Unlock the mutex now
  80         pthread_mutex_unlock( &avformat_mutex );
  81 }
  82
  83 static void avformat_init( )
  84 {
  85         // Initialise avformat if necessary
  86         if ( avformat_initialised == 0 )
  87         {
  88                 avformat_initialised = 1;
  89                 pthread_mutex_init( &avformat_mutex, NULL );
  90                 av_register_all( );
  91                 mlt_factory_register_for_clean_up( NULL, avformat_destroy );
  92                 av_log_set_level( -1 );
  93         }
  94 }
  95
  96 static void *create_service( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
  97 {
  98         avformat_init( );
  99         if ( !strcmp( id, "avformat" ) )
 100         {
 101                 if ( type == producer_type )
 102                         return producer_avformat_init( profile, arg );
 103                 else if ( type == consumer_type )
 104                         return consumer_avformat_init( profile, arg );
 105         }
 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 static mlt_properties avformat_metadata( mlt_service_type type, const char *id, void *data )
 118 {
 119         char file[ PATH_MAX ];
 120         char *service_type = NULL;
 121         switch ( type )
 122         {
 123                 case consumer_type:
 124                         service_type = "consumer";
 125                         break;
 126                 case filter_type:
 127                         service_type = "filter";
 128                         break;
 129                 case producer_type:
 130                         service_type = "producer";
 131                         break;
 132                 case transition_type:
 133                         service_type = "transition";
 134                         break;
 135                 default:
 136                         return NULL;
 137         }
 138         snprintf( file, PATH_MAX, "%s/avformat/%s_%s.yml", mlt_environment( "MLT_DATA" ), service_type, id );
 139         return mlt_properties_parse_yaml( file );
 140 }
 141
 142 MLT_REPOSITORY
 143 {
 144         MLT_REGISTER( consumer_type, "avformat", create_service );
 145         MLT_REGISTER( producer_type, "avformat", create_service );
 146         MLT_REGISTER( filter_type, "avcolour_space", create_service );
 147         MLT_REGISTER( filter_type, "avcolor_space", create_service );
 148         MLT_REGISTER( filter_type, "avdeinterlace", create_service );
 149         MLT_REGISTER( filter_type, "avresample", create_service );
 150
 151         MLT_REGISTER_METADATA( producer_type, "avformat", avformat_metadata, NULL );
 152 }