static int avformat_initialised = 0;
static pthread_mutex_t avformat_mutex;
+#if 0
+void *av_malloc( unsigned int size )
+{
+ return mlt_pool_alloc( size );
+}
+
+void *av_realloc( void *ptr, unsigned int size )
+{
+ return mlt_pool_realloc( ptr, size );
+}
+
+void av_free( void *ptr )
+{
+ return mlt_pool_release( ptr );
+}
+#endif
+
/** Constructor for libavformat.
*/
// Initialise avformat if necessary
if ( avformat_initialised == 0 )
{
- pthread_mutex_init( &avformat_mutex, NULL );
avformat_initialised = 1;
+ pthread_mutex_init( &avformat_mutex, NULL );
av_register_all( );
}
// Lock the mutex now
pthread_mutex_lock( &avformat_mutex );
+
+ // If "MRL", then create AVInputFormat
+ AVInputFormat *format = NULL;
+ AVFormatParameters *params = NULL;
+ char *standard = NULL;
+ char *mrl = strchr( file, ':' );
+
+ // Only if there is not a protocol specification that avformat can handle
+ if ( mrl && !url_exist( file ) )
+ {
+ // 'file' becomes format abbreviation
+ mrl[0] = 0;
+
+ // Lookup the format
+ format = av_find_input_format( file );
+
+ // Eat the format designator
+ file = ++mrl;
+
+ if ( format )
+ {
+ // Allocate params
+ params = calloc( sizeof( AVFormatParameters ), 1 );
+
+ // These are required by video4linux (defaults)
+ params->width = 640;
+ params->height = 480;
+ params->frame_rate = 25;
+ params->frame_rate_base = 1;
+ params->device = file;
+ params->channels = 2;
+ params->sample_rate = 48000;
+ }
+
+ // Parse out params
+ mrl = strchr( file, '?' );
+ while ( mrl )
+ {
+ mrl[0] = 0;
+ char *name = strdup( ++mrl );
+ char *value = strchr( name, ':' );
+ if ( value )
+ {
+ value[0] = 0;
+ value++;
+ char *t = strchr( value, '&' );
+ if ( t )
+ t[0] = 0;
+ if ( !strcmp( name, "frame_rate" ) )
+ params->frame_rate = atoi( value );
+ else if ( !strcmp( name, "frame_rate_base" ) )
+ params->frame_rate_base = atoi( value );
+ else if ( !strcmp( name, "sample_rate" ) )
+ params->sample_rate = atoi( value );
+ else if ( !strcmp( name, "channels" ) )
+ params->channels = atoi( value );
+ else if ( !strcmp( name, "width" ) )
+ params->width = atoi( value );
+ else if ( !strcmp( name, "height" ) )
+ params->height = atoi( value );
+ else if ( !strcmp( name, "standard" ) )
+ {
+ standard = strdup( value );
+ params->standard = standard;
+ }
+ }
+ free( name );
+ mrl = strchr( mrl, '&' );
+ }
+ }
// Now attempt to open the file
- error = av_open_input_file( &context, file, NULL, 0, NULL );
+ error = av_open_input_file( &context, file, format, 0, params );
error = error < 0;
+
+ // Cleanup AVFormatParameters
+ free( standard );
+ free( params );
// If successful, then try to get additional info
if ( error == 0 )
// Store selected audio and video indexes on properties
mlt_properties_set_int( properties, "audio_index", audio_index );
mlt_properties_set_int( properties, "video_index", video_index );
-
+
// We're going to cheat here - for a/v files, we will have two contexts (reasoning will be clear later)
if ( audio_index != -1 && video_index != -1 )
{
// If we don't have a codec and we can't initialise it, we can't do much more...
if ( codec != NULL && avcodec_open( codec_context, codec ) >= 0 )
{
- double aspect_ratio = 0;
- double source_fps = 0;
-
- // Set aspect ratio
- if ( codec_context->sample_aspect_ratio.num == 0 )
- aspect_ratio = 0;
- else
- aspect_ratio = av_q2d( codec_context->sample_aspect_ratio ) * codec_context->width / codec_context->height;
-
- // XXX: This assumes square pixels!
- if (aspect_ratio <= 0.0)
- aspect_ratio = ( double )codec_context->width / ( double )codec_context->height;
-
- mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
- fprintf( stderr, "AVFORMAT: sample aspect %f computed display aspect %f\n", av_q2d( codec_context->sample_aspect_ratio ), aspect_ratio );
-
- // Determine the fps
- source_fps = ( double )codec_context->frame_rate / codec_context->frame_rate_base;
-
- // We'll use fps if it's available
- if ( source_fps > 0 && source_fps < 30 )
- mlt_properties_set_double( properties, "source_fps", source_fps );
-
// Now store the codec with its destructor
mlt_properties_set_data( properties, "video_codec", codec_context, 0, producer_codec_close, NULL );
-
- // Set to the real timecode
- av_seek_frame( context, -1, 0 );
}
else
{
// No codec, no show...
if ( codec != NULL )
{
+ double aspect_ratio = 1;
+ double source_fps = 0;
+
+ // Set aspect ratio
+ if ( codec_context->sample_aspect_ratio.num > 0 )
+ aspect_ratio = av_q2d( codec_context->sample_aspect_ratio );
+
+ mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
+ //fprintf( stderr, "AVFORMAT: sample aspect %f %dx%d\n", av_q2d( codec_context->sample_aspect_ratio ), codec_context->width, codec_context->height );
+
+ // Determine the fps
+ source_fps = ( double )codec_context->frame_rate / ( codec_context->frame_rate_base == 0 ? 1 : codec_context->frame_rate_base );
+
+ // We'll use fps if it's available
+ if ( source_fps > 0 && source_fps < 30 )
+ mlt_properties_set_double( properties, "source_fps", source_fps );
+
+ // Set the width and height
+ mlt_properties_set_int( frame_properties, "width", codec_context->width );
+ mlt_properties_set_int( frame_properties, "height", codec_context->height );
+
mlt_frame_push_get_image( frame, producer_get_image );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
}