/* Forward references */
-static int transition_get_frame( mlt_service this, mlt_frame_ptr frame, int index );
+static int transition_get_frame( mlt_service self, mlt_frame_ptr frame, int index );
/** Initialize a new transition.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \param child the object of a subclass
* \return true on error
*/
-int mlt_transition_init( mlt_transition this, void *child )
+int mlt_transition_init( mlt_transition self, void *child )
{
- mlt_service service = &this->parent;
- memset( this, 0, sizeof( struct mlt_transition_s ) );
- this->child = child;
- if ( mlt_service_init( service, this ) == 0 )
+ mlt_service service = &self->parent;
+ memset( self, 0, sizeof( struct mlt_transition_s ) );
+ self->child = child;
+ if ( mlt_service_init( service, self ) == 0 )
{
- mlt_properties properties = MLT_TRANSITION_PROPERTIES( this );
+ mlt_properties properties = MLT_TRANSITION_PROPERTIES( self );
service->get_frame = transition_get_frame;
service->close = ( mlt_destructor )mlt_transition_close;
- service->close_object = this;
+ service->close_object = self;
mlt_properties_set_position( properties, "in", 0 );
mlt_properties_set_position( properties, "out", 0 );
mlt_transition mlt_transition_new( )
{
- mlt_transition this = calloc( 1, sizeof( struct mlt_transition_s ) );
- if ( this != NULL )
- mlt_transition_init( this, NULL );
- return this;
+ mlt_transition self = calloc( 1, sizeof( struct mlt_transition_s ) );
+ if ( self != NULL )
+ mlt_transition_init( self, NULL );
+ return self;
}
/** Get the service class interface.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the service class
* \see MLT_TRANSITION_SERVICE
*/
-mlt_service mlt_transition_service( mlt_transition this )
+mlt_service mlt_transition_service( mlt_transition self )
{
- return this != NULL ? &this->parent : NULL;
+ return self != NULL ? &self->parent : NULL;
}
/** Get the properties interface.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the transition's properties
* \see MLT_TRANSITION_PROPERTIES
*/
-mlt_properties mlt_transition_properties( mlt_transition this )
+mlt_properties mlt_transition_properties( mlt_transition self )
{
- return MLT_TRANSITION_PROPERTIES( this );
+ return MLT_TRANSITION_PROPERTIES( self );
}
-/** Connect this transition with a producers a and b tracks.
+/** Connect a transition with a producer's a and b tracks.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \param producer a producer
* \param a_track the track index of the first input
* \param b_track the track index of the second index
* \return true on error
*/
-int mlt_transition_connect( mlt_transition this, mlt_service producer, int a_track, int b_track )
+int mlt_transition_connect( mlt_transition self, mlt_service producer, int a_track, int b_track )
{
- int ret = mlt_service_connect_producer( &this->parent, producer, a_track );
+ int ret = mlt_service_connect_producer( &self->parent, producer, a_track );
if ( ret == 0 )
{
- mlt_properties properties = MLT_TRANSITION_PROPERTIES( this );
- this->producer = producer;
+ mlt_properties properties = MLT_TRANSITION_PROPERTIES( self );
+ self->producer = producer;
mlt_properties_set_int( properties, "a_track", a_track );
mlt_properties_set_int( properties, "b_track", b_track );
}
/** Set the starting and ending time for when the transition is active.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \param in the starting time
* \param out the ending time
*/
-void mlt_transition_set_in_and_out( mlt_transition this, mlt_position in, mlt_position out )
+void mlt_transition_set_in_and_out( mlt_transition self, mlt_position in, mlt_position out )
{
- mlt_properties properties = MLT_TRANSITION_PROPERTIES( this );
+ mlt_properties properties = MLT_TRANSITION_PROPERTIES( self );
mlt_properties_set_position( properties, "in", in );
mlt_properties_set_position( properties, "out", out );
}
/** Get the index of the a track.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the 0-based index of the track of the first producer
*/
-int mlt_transition_get_a_track( mlt_transition this )
+int mlt_transition_get_a_track( mlt_transition self )
{
- return mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "a_track" );
+ return mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( self ), "a_track" );
}
/** Get the index of the b track.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the 0-based index of the track of the second producer
*/
-int mlt_transition_get_b_track( mlt_transition this )
+int mlt_transition_get_b_track( mlt_transition self )
{
- return mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( this ), "b_track" );
+ return mlt_properties_get_int( MLT_TRANSITION_PROPERTIES( self ), "b_track" );
}
/** Get the in point.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the starting time
*/
-mlt_position mlt_transition_get_in( mlt_transition this )
+mlt_position mlt_transition_get_in( mlt_transition self )
{
- return mlt_properties_get_position( MLT_TRANSITION_PROPERTIES( this ), "in" );
+ return mlt_properties_get_position( MLT_TRANSITION_PROPERTIES( self ), "in" );
}
/** Get the out point.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \return the ending time
*/
-mlt_position mlt_transition_get_out( mlt_transition this )
+mlt_position mlt_transition_get_out( mlt_transition self )
{
- return mlt_properties_get_position( MLT_TRANSITION_PROPERTIES( this ), "out" );
+ return mlt_properties_get_position( MLT_TRANSITION_PROPERTIES( self ), "out" );
}
/** Process the frame.
* If we have no process method (unlikely), we simply return the a_frame unmolested.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
* \param a_frame a frame from the first producer
* \param b_frame a frame from the second producer
* \return a frame
*/
-mlt_frame mlt_transition_process( mlt_transition this, mlt_frame a_frame, mlt_frame b_frame )
+mlt_frame mlt_transition_process( mlt_transition self, mlt_frame a_frame, mlt_frame b_frame )
{
- if ( this->process == NULL )
+ if ( self->process == NULL )
return a_frame;
else
- return this->process( this, a_frame, b_frame );
+ return self->process( self, a_frame, b_frame );
}
-/** Get a frame from this transition.
+/** Get a frame from a transition.
The logic is complex here. A transition is typically applied to frames on the a and
b tracks specified in the connect method above and only if both contain valid info
static int transition_get_frame( mlt_service service, mlt_frame_ptr frame, int index )
{
int error = 0;
- mlt_transition this = service->child;
+ mlt_transition self = service->child;
- mlt_properties properties = MLT_TRANSITION_PROPERTIES( this );
+ mlt_properties properties = MLT_TRANSITION_PROPERTIES( self );
int accepts_blanks = mlt_properties_get_int( properties, "accepts_blanks" );
int a_track = mlt_properties_get_int( properties, "a_track" );
}
// Only act on this operation once per multitrack iteration from the tractor
- if ( !this->held )
+ if ( !self->held )
{
int active = 0;
int i = 0;
int ( *invalid )( mlt_frame ) = type == 1 ? mlt_frame_is_test_card : mlt_frame_is_test_audio;
// Initialise temporary store
- if ( this->frames == NULL )
- this->frames = calloc( sizeof( mlt_frame ), b_track + 1 );
+ if ( self->frames == NULL )
+ self->frames = calloc( sizeof( mlt_frame ), b_track + 1 );
// Get all frames between a and b
for( i = a_track; i <= b_track; i ++ )
- mlt_service_get_frame( this->producer, &this->frames[ i ], i );
+ mlt_service_get_frame( self->producer, &self->frames[ i ], i );
// We're holding these frames until the last_track frame property is received
- this->held = 1;
+ self->held = 1;
// When we need to locate the a_frame
switch( type )
if ( !active )
{
// Hunt for the a_frame
- while( a_frame <= b_frame && invalid( this->frames[ a_frame ] ) )
+ while( a_frame <= b_frame && invalid( self->frames[ a_frame ] ) )
a_frame ++;
// Determine if we're active now
- active = a_frame != b_frame && !invalid( this->frames[ b_frame ] );
+ active = a_frame != b_frame && !invalid( self->frames[ b_frame ] );
}
break;
if ( active && !always_active )
{
// For non-always-active transitions, we need the current position of the a frame
- position = mlt_frame_get_position( this->frames[ a_frame ] );
+ position = mlt_frame_get_position( self->frames[ a_frame ] );
// If a is in range, we're active
active = position >= in && ( out == 0 || position <= out );
// Finally, process the a and b frames
if ( active )
{
- mlt_frame a_frame_ptr = this->frames[ !reverse_order ? a_frame : b_frame ];
- mlt_frame b_frame_ptr = this->frames[ !reverse_order ? b_frame : a_frame ];
+ mlt_frame a_frame_ptr = self->frames[ !reverse_order ? a_frame : b_frame ];
+ mlt_frame b_frame_ptr = self->frames[ !reverse_order ? b_frame : a_frame ];
int a_hide = mlt_properties_get_int( MLT_FRAME_PROPERTIES( a_frame_ptr ), "hide" );
int b_hide = mlt_properties_get_int( MLT_FRAME_PROPERTIES( b_frame_ptr ), "hide" );
if ( !( a_hide & type ) && !( b_hide & type ) )
{
// Process the transition
- *frame = mlt_transition_process( this, a_frame_ptr, b_frame_ptr );
+ *frame = mlt_transition_process( self, a_frame_ptr, b_frame_ptr );
// We need to ensure that the tractor doesn't consider this frame for output
if ( *frame == a_frame_ptr )
// Obtain the frame from the cache or the producer we're attached to
if ( index >= a_track && index <= b_track )
- *frame = this->frames[ index ];
+ *frame = self->frames[ index ];
else
- error = mlt_service_get_frame( this->producer, frame, index );
+ error = mlt_service_get_frame( self->producer, frame, index );
// Determine if that was the last track
- this->held = !mlt_properties_get_int( MLT_FRAME_PROPERTIES( *frame ), "last_track" );
+ self->held = !mlt_properties_get_int( MLT_FRAME_PROPERTIES( *frame ), "last_track" );
return error;
}
/** Close and destroy the transition.
*
* \public \memberof mlt_transition_s
- * \param this a transition
+ * \param self a transition
*/
-void mlt_transition_close( mlt_transition this )
+void mlt_transition_close( mlt_transition self )
{
- if ( this != NULL && mlt_properties_dec_ref( MLT_TRANSITION_PROPERTIES( this ) ) <= 0 )
+ if ( self != NULL && mlt_properties_dec_ref( MLT_TRANSITION_PROPERTIES( self ) ) <= 0 )
{
- this->parent.close = NULL;
- if ( this->close != NULL )
+ self->parent.close = NULL;
+ if ( self->close != NULL )
{
- this->close( this );
+ self->close( self );
}
else
{
- mlt_service_close( &this->parent );
- free( this->frames );
- free( this );
+ mlt_service_close( &self->parent );
+ free( self->frames );
+ free( self );
}
}
}
projects / mlt / blobdiff