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_factory.h>
  25 #include "producer_avformat.h"
  26 #include "consumer_avformat.h"
  27 #include "filter_avcolour_space.h"
  28 #include "filter_avdeinterlace.h"
  29 #include "filter_avresample.h"
  30
  31 // ffmpeg Header files
  32 #include <avformat.h>
  33
  34 // A static flag used to determine if avformat has been initialised
  35 static int avformat_initialised = 0;
  36
  37 // A locking mutex
  38 static pthread_mutex_t avformat_mutex;
  39
  40 #if 0
  41 // These 3 functions should override the alloc functions in libavformat
  42 // but some formats or codecs seem to crash when used (wmv in particular)
  43
  44 void *av_malloc( unsigned int size )
  45 {
  46         return mlt_pool_alloc( size );
  47 }
  48
  49 void *av_realloc( void *ptr, unsigned int size )
  50 {
  51         return mlt_pool_realloc( ptr, size );
  52 }
  53
  54 void av_free( void *ptr )
  55 {
  56         return mlt_pool_release( ptr );
  57 }
  58 #endif
  59
  60 void avformat_destroy( void *ignore )
  61 {
  62         // Clean up
  63         av_free_static( );
  64
  65         // Destroy the mutex
  66         pthread_mutex_destroy( &avformat_mutex );
  67 }
  68
  69 void avformat_lock( )
  70 {
  71         // Lock the mutex now
  72         pthread_mutex_lock( &avformat_mutex );
  73 }
  74
  75 void avformat_unlock( )
  76 {
  77         // Unlock the mutex now
  78         pthread_mutex_unlock( &avformat_mutex );
  79 }
  80
  81 static void avformat_init( )
  82 {
  83         // Initialise avformat if necessary
  84         if ( avformat_initialised == 0 )
  85         {
  86                 avformat_initialised = 1;
  87                 pthread_mutex_init( &avformat_mutex, NULL );
  88                 av_register_all( );
  89                 mlt_factory_register_for_clean_up( NULL, avformat_destroy );
  90                 av_log_set_level( -1 );
  91         }
  92 }
  93
  94 void *mlt_create_producer( char *id, void *arg )
  95 {
  96         avformat_init( );
  97         if ( !strcmp( id, "avformat" ) )
  98                 return producer_avformat_init( arg );
  99         return NULL;
 100 }
 101
 102 void *mlt_create_filter( char *id, void *arg )
 103 {
 104         avformat_init( );
 105         if ( !strcmp( id, "avcolour_space" ) )
 106                 return filter_avcolour_space_init( arg );
 107 #ifdef USE_MMX
 108         if ( !strcmp( id, "avdeinterlace" ) )
 109                 return filter_avdeinterlace_init( arg );
 110 #endif
 111         if ( !strcmp( id, "avresample" ) )
 112                 return filter_avresample_init( arg );
 113         return NULL;
 114 }
 115
 116 void *mlt_create_transition( char *id, void *arg )
 117 {
 118         return NULL;
 119 }
 120
 121 void *mlt_create_consumer( char *id, void *arg )
 122 {
 123         avformat_init( );
 124         if ( !strcmp( id, "avformat" ) )
 125                 return consumer_avformat_init( arg );
 126         return NULL;
 127 }
 128