int mlt_producer_init( mlt_producer this, void *child )
{
- // Initialise the producer
- memset( this, 0, sizeof( struct mlt_producer_s ) );
-
- // Associate with the child
- this->child = child;
+ // Check that we haven't received NULL
+ int error = this == NULL;
- // Initialise the service
- if ( mlt_service_init( &this->parent, this ) == 0 )
+ // Continue if no error
+ if ( error == 0 )
{
- // The parent is the service
- mlt_service parent = &this->parent;
-
- // Get the properties of the parent
- mlt_properties properties = mlt_service_properties( parent );
-
- // Set the default properties
- mlt_properties_set( properties, "mlt_type", "mlt_producer" );
- mlt_properties_set_timecode( properties, "position", 0.0 );
- mlt_properties_set_double( properties, "frame", 1 );
- mlt_properties_set_double( properties, "fps", 25.0 );
- mlt_properties_set_double( properties, "speed", 1.0 );
- mlt_properties_set_timecode( properties, "in", 0.0 );
- mlt_properties_set_timecode( properties, "out", 36000.0 );
- mlt_properties_set_timecode( properties, "playtime", 36000.0 );
- mlt_properties_set_timecode( properties, "length", 36000.0 );
- mlt_properties_set_int( properties, "known_length", 1 );
- mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 );
-
- // Override service get_frame
- parent->get_frame = producer_get_frame;
+ // Initialise the producer
+ memset( this, 0, sizeof( struct mlt_producer_s ) );
+
+ // Associate with the child
+ this->child = child;
+
+ // Initialise the service
+ if ( mlt_service_init( &this->parent, this ) == 0 )
+ {
+ // The parent is the service
+ mlt_service parent = &this->parent;
+
+ // Get the properties of the parent
+ mlt_properties properties = mlt_service_properties( parent );
+
+ // Set the default properties
+ mlt_properties_set( properties, "mlt_type", "mlt_producer" );
+ mlt_properties_set_position( properties, "position", 0.0 );
+ mlt_properties_set_double( properties, "frame", 0 );
+ mlt_properties_set_double( properties, "fps", 25.0 );
+ mlt_properties_set_double( properties, "speed", 1.0 );
+ mlt_properties_set_position( properties, "in", 0 );
+ mlt_properties_set_position( properties, "out", 1799999 );
+ mlt_properties_set_position( properties, "length", 1800000 );
+ mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 );
+ mlt_properties_set( properties, "eof", "pause" );
+ mlt_properties_set( properties, "resource", "<producer>" );
+
+ // Override service get_frame
+ parent->get_frame = producer_get_frame;
+ }
}
- return 0;
+ return error;
}
/** Get the parent service object.
return mlt_service_properties( &this->parent );
}
-/** Seek to a specified time code.
+/** Seek to a specified position.
*/
-int mlt_producer_seek( mlt_producer this, mlt_timecode timecode )
+int mlt_producer_seek( mlt_producer this, mlt_position position )
{
+ // Determine eof handling
+ char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" );
+
// Check bounds
- if ( timecode < 0 )
- timecode = 0;
- if ( timecode > mlt_producer_get_playtime( this ) )
- timecode = mlt_producer_get_playtime( this );
+ if ( position < 0 )
+ position = 0;
+ else if ( !strcmp( eof, "pause" ) && position >= mlt_producer_get_playtime( this ) )
+ position = mlt_producer_get_playtime( this ) - 1;
// Set the position
- mlt_properties_set_timecode( mlt_producer_properties( this ), "position", timecode );
+ mlt_properties_set_position( mlt_producer_properties( this ), "position", position );
// Calculate the absolute frame
- double frame = ( mlt_producer_get_in( this ) + timecode ) * mlt_producer_get_fps( this );
- mlt_properties_set_double( mlt_producer_properties( this ), "frame", floor( frame + 0.5 ) );
+ mlt_properties_set_position( mlt_producer_properties( this ), "frame", mlt_producer_get_in( this ) + position );
return 0;
}
-/** Seek to a specified absolute frame.
+/** Get the current position (relative to in point).
*/
-int mlt_producer_seek_frame( mlt_producer this, uint64_t frame )
+mlt_position mlt_producer_position( mlt_producer this )
{
- // Calculate the time code
- double timecode = ( frame / mlt_producer_get_fps( this ) ) - mlt_producer_get_in( this );
-
- // If timecode is invalid, then seek on time
- if ( timecode < 0 )
- {
- // Seek to the in point
- mlt_producer_seek( this, 0 );
- }
- else if ( timecode > mlt_producer_get_playtime( this ) )
- {
- // Seek to the out point
- mlt_producer_seek( this, mlt_producer_get_playtime( this ) );
- }
- else
- {
- // Set the position
- mlt_properties_set_timecode( mlt_producer_properties( this ), "position", timecode );
-
- // Set the absolute frame
- mlt_properties_set_double( mlt_producer_properties( this ), "frame", frame );
- }
-
- return 0;
+ return mlt_properties_get_position( mlt_producer_properties( this ), "position" );
}
-/** Get the current time code.
+/** Get the current position (relative to start of producer).
*/
-mlt_timecode mlt_producer_position( mlt_producer this )
+mlt_position mlt_producer_frame( mlt_producer this )
{
- return mlt_properties_get_timecode( mlt_producer_properties( this ), "position" );
-}
-
-/** Get the current frame.
-*/
-
-uint64_t mlt_producer_frame( mlt_producer this )
-{
- return mlt_properties_get_double( mlt_producer_properties( this ), "frame" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "frame" );
}
/** Set the playing speed.
/** Set the in and out points.
*/
-int mlt_producer_set_in_and_out( mlt_producer this, mlt_timecode in, mlt_timecode out )
+int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out )
{
// Correct ins and outs if necessary
if ( in < 0 )
in = 0;
- if ( in > mlt_producer_get_length( this ) )
+ else if ( in > mlt_producer_get_length( this ) )
in = mlt_producer_get_length( this );
+
if ( out < 0 )
out = 0;
- if ( out > mlt_producer_get_length( this ) )
+ else if ( out > mlt_producer_get_length( this ) )
out = mlt_producer_get_length( this );
// Swap ins and outs if wrong
if ( out < in )
{
- mlt_timecode t = in;
+ mlt_position t = in;
in = out;
out = t;
}
// Set the values
- mlt_properties_set_timecode( mlt_producer_properties( this ), "in", in );
- mlt_properties_set_timecode( mlt_producer_properties( this ), "out", out );
- mlt_properties_set_timecode( mlt_producer_properties( this ), "playtime", out - in );
-
- // Seek to the in point
- mlt_producer_seek( this, 0 );
+ mlt_properties_set_position( mlt_producer_properties( this ), "in", in );
+ mlt_properties_set_position( mlt_producer_properties( this ), "out", out );
return 0;
}
/** Get the in point.
*/
-mlt_timecode mlt_producer_get_in( mlt_producer this )
+mlt_position mlt_producer_get_in( mlt_producer this )
{
- return mlt_properties_get_timecode( mlt_producer_properties( this ), "in" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "in" );
}
/** Get the out point.
*/
-mlt_timecode mlt_producer_get_out( mlt_producer this )
+mlt_position mlt_producer_get_out( mlt_producer this )
{
- return mlt_properties_get_timecode( mlt_producer_properties( this ), "out" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "out" );
}
/** Get the total play time.
*/
-mlt_timecode mlt_producer_get_playtime( mlt_producer this )
+mlt_position mlt_producer_get_playtime( mlt_producer this )
{
- return mlt_properties_get_timecode( mlt_producer_properties( this ), "playtime" );
+ return mlt_producer_get_out( this ) - mlt_producer_get_in( this ) + 1;
}
/** Get the total length of the producer.
*/
-mlt_timecode mlt_producer_get_length( mlt_producer this )
+mlt_position mlt_producer_get_length( mlt_producer this )
{
- return mlt_properties_get_timecode( mlt_producer_properties( this ), "length" );
+ return mlt_properties_get_position( mlt_producer_properties( this ), "length" );
}
/** Prepare for next frame.
void mlt_producer_prepare_next( mlt_producer this )
{
- mlt_producer_seek_frame( this, mlt_producer_frame( this ) + mlt_producer_get_speed( this ) );
+ mlt_producer_seek( this, mlt_producer_position( this ) + mlt_producer_get_speed( this ) );
}
/** Get a frame.
int result = 1;
mlt_producer this = service->child;
+ // Determine eof handling
+ char *eof = mlt_properties_get( mlt_producer_properties( this ), "eof" );
+
// A properly instatiated producer will have a get_frame method...
- if ( this->get_frame != NULL )
- {
- // Get the frame from the implementation
- result = this->get_frame( this, frame, index );
- }
- else
+ if ( this->get_frame == NULL || ( !strcmp( eof, "continue" ) && mlt_producer_position( this ) > mlt_producer_get_out( this ) ) )
{
// Generate a test frame
*frame = mlt_frame_init( );
- // Set the timecode
- result = mlt_frame_set_timecode( *frame, mlt_producer_position( this ) );
+ // Set the position
+ result = mlt_frame_set_position( *frame, mlt_producer_position( this ) );
- // Calculate the next timecode
+ // Calculate the next position
mlt_producer_prepare_next( this );
}
+ else
+ {
+ // Get the frame from the implementation
+ result = this->get_frame( this, frame, index );
+ }
- // Copy the fps of the producer onto the frame
+ // Copy the fps and speed of the producer onto the frame
mlt_properties properties = mlt_frame_properties( *frame );
mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( this ) );
+ double speed = mlt_producer_get_speed( this );
+ mlt_properties_set_double( properties, "speed", speed );
return 0;
}
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