static void apply_profile_properties( mlt_consumer self, mlt_profile profile, mlt_properties properties )
{
mlt_event_block( self->event_listener );
mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
mlt_properties_set_int( properties, "frame_rate_num", profile->frame_rate_num );
mlt_properties_set_int( properties, "frame_rate_den", profile->frame_rate_den );
mlt_properties_set_int( properties, "width", profile->width );
mlt_properties_set_int( properties, "height", profile->height );
mlt_properties_set_int( properties, "progressive", profile->progressive );
mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
mlt_properties_set_int( properties, "sample_aspect_num", profile->sample_aspect_num );
mlt_properties_set_int( properties, "sample_aspect_den", profile->sample_aspect_den );
mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
mlt_properties_set_int( properties, "colorspace", profile->colorspace );
mlt_event_unblock( self->event_listener );
}
static void mlt_consumer_property_changed( mlt_properties owner, mlt_consumer self, char *name )
{
if ( !strcmp( name, "mlt_profile" ) )
{
// Get the properies
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
// Get the current profile
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
// Load the new profile
mlt_profile new_profile = mlt_profile_init( mlt_properties_get( properties, name ) );
if ( new_profile )
{
// Copy the profile
if ( profile != NULL )
{
free( profile->description );
memcpy( profile, new_profile, sizeof( struct mlt_profile_s ) );
profile->description = strdup( new_profile->description );
}
else
{
profile = new_profile;
}
// Apply to properties
apply_profile_properties( self, profile, properties );
mlt_profile_close( new_profile );
}
}
else if ( !strcmp( name, "frame_rate_num" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->frame_rate_num = mlt_properties_get_int( properties, "frame_rate_num" );
mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
}
}
else if ( !strcmp( name, "frame_rate_den" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->frame_rate_den = mlt_properties_get_int( properties, "frame_rate_den" );
mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
}
}
else if ( !strcmp( name, "width" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
profile->width = mlt_properties_get_int( properties, "width" );
}
else if ( !strcmp( name, "height" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
profile->height = mlt_properties_get_int( properties, "height" );
}
else if ( !strcmp( name, "progressive" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
profile->progressive = mlt_properties_get_int( properties, "progressive" );
}
else if ( !strcmp( name, "sample_aspect_num" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->sample_aspect_num = mlt_properties_get_int( properties, "sample_aspect_num" );
mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
}
}
else if ( !strcmp( name, "sample_aspect_den" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->sample_aspect_den = mlt_properties_get_int( properties, "sample_aspect_den" );
mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
}
}
else if ( !strcmp( name, "display_aspect_num" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->display_aspect_num = mlt_properties_get_int( properties, "display_aspect_num" );
mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
}
}
else if ( !strcmp( name, "display_aspect_den" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
{
profile->display_aspect_den = mlt_properties_get_int( properties, "display_aspect_den" );
mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
}
}
else if ( !strcmp( name, "colorspace" ) )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
if ( profile )
profile->colorspace = mlt_properties_get_int( properties, "colorspace" );
}
}
static mlt_frame filter_process( mlt_filter filter, mlt_frame frame )
{
if ( mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "active" ) )
{
// Push the get_image method on to the stack
mlt_frame_push_service( frame, mlt_service_profile( MLT_FILTER_SERVICE( filter ) ) );
mlt_frame_push_get_image( frame, filter_get_image );
}
else
{
mlt_properties filter_props = MLT_FILTER_PROPERTIES( filter );
mlt_properties frame_props = MLT_FRAME_PROPERTIES( frame );
int left = mlt_properties_get_int( filter_props, "left" );
int right = mlt_properties_get_int( filter_props, "right" );
int top = mlt_properties_get_int( filter_props, "top" );
int bottom = mlt_properties_get_int( filter_props, "bottom" );
int width = mlt_properties_get_int( frame_props, "meta.media.width" );
int height = mlt_properties_get_int( frame_props, "meta.media.height" );
int use_profile = mlt_properties_get_int( filter_props, "use_profile" );
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
if ( use_profile )
{
top = top * height / profile->height;
bottom = bottom * height / profile->height;
left = left * width / profile->width;
right = right * width / profile->width;
}
if ( mlt_properties_get_int( filter_props, "center" ) )
{
double aspect_ratio = mlt_frame_get_aspect_ratio( frame );
if ( aspect_ratio == 0.0 )
aspect_ratio = mlt_profile_sar( profile );
double input_ar = aspect_ratio * width / height;
double output_ar = mlt_profile_dar( mlt_service_profile( MLT_FILTER_SERVICE(filter) ) );
int bias = mlt_properties_get_int( filter_props, "center_bias" );
if ( input_ar > output_ar )
{
left = right = ( width - rint( output_ar * height / aspect_ratio ) ) / 2;
if ( abs(bias) > left )
bias = bias < 0 ? -left : left;
else if ( use_profile )
bias = bias * width / profile->width;
left -= bias;
right += bias;
}
else
{
top = bottom = ( height - rint( aspect_ratio * width / output_ar ) ) / 2;
if ( abs(bias) > top )
bias = bias < 0 ? -top : top;
else if ( use_profile )
bias = bias * height / profile->height;
top -= bias;
bottom += bias;
}
}
// Coerce the output to an even width because subsampled YUV with odd widths is too
// risky for downstream processing to handle correctly.
left += ( width - left - right ) & 1;
if ( width - left - right < 8 )
left = right = 0;
if ( height - top - bottom < 8 )
top = bottom = 0;
mlt_properties_set_int( frame_props, "crop.left", left );
mlt_properties_set_int( frame_props, "crop.right", right );
mlt_properties_set_int( frame_props, "crop.top", top );
mlt_properties_set_int( frame_props, "crop.bottom", bottom );
mlt_properties_set_int( frame_props, "crop.original_width", width );
mlt_properties_set_int( frame_props, "crop.original_height", height );
mlt_properties_set_int( frame_props, "meta.media.width", width - left - right );
mlt_properties_set_int( frame_props, "meta.media.height", height - top - bottom );
}
return frame;
}