2 * factory.c -- the factory method interfaces
3 * Copyright (C) 2003-2012 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
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.
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.
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
26 #include <framework/mlt.h>
28 extern mlt_consumer consumer_avformat_init( mlt_profile profile, char *file );
29 extern mlt_filter filter_avcolour_space_init( void *arg );
30 extern mlt_filter filter_avdeinterlace_init( void *arg );
31 extern mlt_filter filter_avresample_init( char *arg );
32 extern mlt_filter filter_swscale_init( mlt_profile profile, char *arg );
33 extern mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file );
35 // ffmpeg Header files
36 #include <libavformat/avformat.h>
38 #include <libavdevice/avdevice.h>
40 #if LIBAVCODEC_VERSION_MAJOR >= 53
41 #include <libavutil/opt.h>
43 #include <libavcodec/opt.h>
46 // A static flag used to determine if avformat has been initialised
47 static int avformat_initialised = 0;
50 static pthread_mutex_t avformat_mutex;
53 // These 3 functions should override the alloc functions in libavformat
54 // but some formats or codecs seem to crash when used (wmv in particular)
56 void *av_malloc( unsigned int size )
58 return mlt_pool_alloc( size );
61 void *av_realloc( void *ptr, unsigned int size )
63 return mlt_pool_realloc( ptr, size );
66 void av_free( void *ptr )
68 return mlt_pool_release( ptr );
72 static int avformat_lockmgr(void **mutex, enum AVLockOp op)
74 pthread_mutex_t** pmutex = (pthread_mutex_t**) mutex;
79 *pmutex = (pthread_mutex_t*) malloc(sizeof(pthread_mutex_t));
80 pthread_mutex_init(*pmutex, NULL);
83 pthread_mutex_lock(*pmutex);
86 pthread_mutex_unlock(*pmutex);
89 pthread_mutex_destroy(*pmutex);
97 void avformat_destroy( void *ignore )
100 // av_free_static( ); -XXX this is deprecated
103 pthread_mutex_destroy( &avformat_mutex );
106 void avformat_lock( )
108 // Lock the mutex now
109 pthread_mutex_lock( &avformat_mutex );
112 void avformat_unlock( )
114 // Unlock the mutex now
115 pthread_mutex_unlock( &avformat_mutex );
118 static void avformat_init( )
120 // Initialise avformat if necessary
121 if ( avformat_initialised == 0 )
123 avformat_initialised = 1;
124 pthread_mutex_init( &avformat_mutex, NULL );
125 av_lockmgr_register( &avformat_lockmgr );
128 avdevice_register_all();
130 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(13<<8))
131 avformat_network_init();
133 mlt_factory_register_for_clean_up( NULL, avformat_destroy );
134 av_log_set_level( mlt_log_get_level() );
138 static void *create_service( mlt_profile profile, mlt_service_type type, const char *id, void *arg )
142 if ( !strncmp( id, "avformat", 8 ) )
144 if ( type == producer_type )
145 return producer_avformat_init( profile, id, arg );
146 else if ( type == consumer_type )
147 return consumer_avformat_init( profile, arg );
151 if ( !strcmp( id, "avcolor_space" ) )
152 return filter_avcolour_space_init( arg );
153 if ( !strcmp( id, "avcolour_space" ) )
154 return filter_avcolour_space_init( arg );
155 if ( !strcmp( id, "avdeinterlace" ) )
156 return filter_avdeinterlace_init( arg );
157 if ( !strcmp( id, "avresample" ) )
158 return filter_avresample_init( arg );
160 if ( !strcmp( id, "swscale" ) )
161 return filter_swscale_init( profile, arg );
167 static void add_parameters( mlt_properties params, void *object, int req_flags, const char *unit, const char *subclass )
169 const AVOption *opt = NULL;
171 // For each AVOption on the AVClass object
172 #if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
173 while ( ( opt = av_opt_next( object, opt ) ) )
175 while ( ( opt = av_next_option( object, opt ) ) )
178 // If matches flags and not a binary option (not supported by Mlt)
179 if ( !( opt->flags & req_flags ) || ( opt->type == FF_OPT_TYPE_BINARY ) )
182 // Ignore constants (keyword values)
183 if ( !unit && opt->type == FF_OPT_TYPE_CONST )
185 // When processing a groups of options (unit)...
186 // ...ignore non-constants
187 else if ( unit && opt->type != FF_OPT_TYPE_CONST )
189 // ...ignore constants not in this group
190 else if ( unit && opt->type == FF_OPT_TYPE_CONST && strcmp( unit, opt->unit ) )
192 // ..add constants to the 'values' sequence
193 else if ( unit && opt->type == FF_OPT_TYPE_CONST )
196 snprintf( key, 20, "%d", mlt_properties_count( params ) );
197 mlt_properties_set( params, key, opt->name );
201 // Create a map for this option.
202 mlt_properties p = mlt_properties_new();
204 snprintf( key, 20, "%d", mlt_properties_count( params ) );
205 // Add the map to the 'parameters' sequence.
206 mlt_properties_set_data( params, key, p, 0, (mlt_destructor) mlt_properties_close, NULL );
208 // Add the parameter metadata for this AVOption.
209 mlt_properties_set( p, "identifier", opt->name );
214 char *s = malloc( strlen( opt->help ) + strlen( subclass ) + 4 );
215 strcpy( s, opt->help );
217 strcat( s, subclass );
219 mlt_properties_set( p, "description", s );
223 mlt_properties_set( p, "description", opt->help );
228 case FF_OPT_TYPE_FLAGS:
229 mlt_properties_set( p, "type", "string" );
230 mlt_properties_set( p, "format", "flags" );
232 case FF_OPT_TYPE_INT:
235 mlt_properties_set( p, "type", "integer" );
236 if ( opt->min != INT_MIN )
237 mlt_properties_set_int( p, "minimum", (int) opt->min );
238 if ( opt->max != INT_MAX )
239 mlt_properties_set_int( p, "maximum", (int) opt->max );
240 #if LIBAVUTIL_VERSION_MAJOR > 50
241 mlt_properties_set_int( p, "default", (int) opt->default_val.dbl );
246 mlt_properties_set( p, "type", "string" );
247 mlt_properties_set( p, "format", "integer or keyword" );
250 case FF_OPT_TYPE_INT64:
251 mlt_properties_set( p, "type", "integer" );
252 mlt_properties_set( p, "format", "64-bit" );
253 if ( opt->min != INT64_MIN )
254 mlt_properties_set_int64( p, "minimum", (int64_t) opt->min );
255 if ( opt->max != INT64_MAX )
256 mlt_properties_set_int64( p, "maximum", (int64_t) opt->max );
257 #if LIBAVUTIL_VERSION_MAJOR > 50
258 mlt_properties_set_int64( p, "default", (int64_t) opt->default_val.dbl );
261 case FF_OPT_TYPE_FLOAT:
262 mlt_properties_set( p, "type", "float" );
263 if ( opt->min != FLT_MIN && opt->min != -340282346638528859811704183484516925440.0 )
264 mlt_properties_set_double( p, "minimum", opt->min );
265 if ( opt->max != FLT_MAX )
266 mlt_properties_set_double( p, "maximum", opt->max );
267 #if LIBAVUTIL_VERSION_MAJOR > 50
268 mlt_properties_set_double( p, "default", opt->default_val.dbl );
271 case FF_OPT_TYPE_DOUBLE:
272 mlt_properties_set( p, "type", "float" );
273 mlt_properties_set( p, "format", "double" );
274 if ( opt->min != DBL_MIN )
275 mlt_properties_set_double( p, "minimum", opt->min );
276 if ( opt->max != DBL_MAX )
277 mlt_properties_set_double( p, "maximum", opt->max );
278 #if LIBAVUTIL_VERSION_MAJOR > 50
279 mlt_properties_set_double( p, "default", opt->default_val.dbl );
282 case FF_OPT_TYPE_STRING:
283 mlt_properties_set( p, "type", "string" );
284 #if LIBAVUTIL_VERSION_MAJOR > 50
285 mlt_properties_set( p, "default", opt->default_val.str );
288 case FF_OPT_TYPE_RATIONAL:
289 mlt_properties_set( p, "type", "string" );
290 mlt_properties_set( p, "format", "numerator:denominator" );
292 case FF_OPT_TYPE_CONST:
294 mlt_properties_set( p, "type", "integer" );
295 mlt_properties_set( p, "format", "constant" );
298 // If the option belongs to a group (unit) and is not a constant (keyword value)
299 if ( opt->unit && opt->type != FF_OPT_TYPE_CONST )
301 // Create a 'values' sequence.
302 mlt_properties values = mlt_properties_new();
304 // Recurse to add constants in this group to the 'values' sequence.
305 add_parameters( values, object, req_flags, opt->unit, NULL );
306 if ( mlt_properties_count( values ) )
307 mlt_properties_set_data( p, "values", values, 0, (mlt_destructor) mlt_properties_close, NULL );
309 mlt_properties_close( values );
314 static mlt_properties avformat_metadata( mlt_service_type type, const char *id, void *data )
316 char file[ PATH_MAX ];
317 const char *service_type = NULL;
318 mlt_properties result = NULL;
320 // Convert the service type to a string.
324 service_type = "consumer";
327 service_type = "filter";
330 service_type = "producer";
332 case transition_type:
333 service_type = "transition";
338 // Load the yaml file
339 snprintf( file, PATH_MAX, "%s/avformat/%s_%s.yml", mlt_environment( "MLT_DATA" ), service_type, id );
340 result = mlt_properties_parse_yaml( file );
341 if ( result && ( type == consumer_type || type == producer_type ) )
343 // Annotate the yaml properties with AVOptions.
344 mlt_properties params = (mlt_properties) mlt_properties_get_data( result, "parameters", NULL );
345 AVFormatContext *avformat = avformat_alloc_context();
346 #if LIBAVCODEC_VERSION_INT > ((53<<16)+(8<<8)+0)
347 AVCodecContext *avcodec = avcodec_alloc_context3( NULL );
349 AVCodecContext *avcodec = avcodec_alloc_context();
351 int flags = ( type == consumer_type )? AV_OPT_FLAG_ENCODING_PARAM : AV_OPT_FLAG_DECODING_PARAM;
353 add_parameters( params, avformat, flags, NULL, NULL );
354 #if LIBAVFORMAT_VERSION_MAJOR >= 53
356 if ( type == producer_type )
358 AVInputFormat *f = NULL;
359 while ( ( f = av_iformat_next( f ) ) )
361 add_parameters( params, &f->priv_class, flags, NULL, f->name );
365 AVOutputFormat *f = NULL;
366 while ( ( f = av_oformat_next( f ) ) )
368 add_parameters( params, &f->priv_class, flags, NULL, f->name );
372 add_parameters( params, avcodec, flags, NULL, NULL );
373 #if LIBAVCODEC_VERSION_MAJOR >= 53
375 while ( ( c = av_codec_next( c ) ) )
377 add_parameters( params, &c->priv_class, flags, NULL, c->name );
389 MLT_REGISTER( consumer_type, "avformat", create_service );
390 MLT_REGISTER( producer_type, "avformat", create_service );
391 MLT_REGISTER( producer_type, "avformat-novalidate", create_service );
392 MLT_REGISTER_METADATA( consumer_type, "avformat", avformat_metadata, NULL );
393 MLT_REGISTER_METADATA( producer_type, "avformat", avformat_metadata, NULL );
396 MLT_REGISTER( filter_type, "avcolour_space", create_service );
397 MLT_REGISTER( filter_type, "avcolor_space", create_service );
398 MLT_REGISTER( filter_type, "avdeinterlace", create_service );
399 MLT_REGISTER( filter_type, "avresample", create_service );
401 MLT_REGISTER( filter_type, "swscale", create_service );