return mlt_deque_count( this->stack_image ) == 0 || mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "test_image" );
}
-/** Check if we have a way to derive something than test audio.
+/** Check if we have a way to derive something other than test audio.
*/
int mlt_frame_is_test_audio( mlt_frame this )
{
- return this->get_audio == NULL || mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "test_audio" );
+ return mlt_deque_count( this->stack_audio ) == 0 || mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "test_audio" );
}
/** Get the aspect ratio of the frame.
return mlt_deque_pop_back( this->stack_image );
}
+/** Push a service.
+*/
+
+int mlt_frame_push_service_int( mlt_frame this, int that )
+{
+ return mlt_deque_push_back_int( this->stack_image, that );
+}
+
+/** Pop a service.
+*/
+
+int mlt_frame_pop_service_int( mlt_frame this )
+{
+ return mlt_deque_pop_back_int( this->stack_image );
+}
+
/** Push an audio item on the stack.
*/
return this->stack_service;
}
+/** [EXPERIMENTAL] Replace image stack with the information provided.
+
+ This might prove to be unreliable and restrictive - the idea is that a transition
+ which normally uses two images may decide to only use the b frame (ie: in the case
+ of a composite where the b frame completely obscures the a frame).
+
+ The image must be writable and the destructor for the image itself must be taken
+ care of on another frame and that frame cannot have a replace applied to it...
+ Further it assumes that no alpha mask is in use.
+
+ For these reasons, it can only be used in a specific situation - when you have
+ multiple tracks each with their own transition and these transitions are applied
+ in a strictly reversed order (ie: highest numbered [lowest track] is processed
+ first).
+
+ More reliable approach - the cases should be detected during the process phase
+ and the upper tracks should simply not be invited to stack...
+*/
+
+void mlt_frame_replace_image( mlt_frame this, uint8_t *image, mlt_image_format format, int width, int height )
+{
+ // Herein lies the potential problem for this function - it makes a potentially
+ // dangerous assumption that all content on the image stack can be removed without a destructor
+ while( mlt_deque_pop_back( this->stack_image ) ) ;
+
+ // Update the information
+ mlt_properties_set_data( MLT_FRAME_PROPERTIES( this ), "image", image, 0, NULL, NULL );
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "width", width );
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "height", height );
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "format", format );
+ this->get_alpha_mask = NULL;
+}
+
+/** Get the image associated to the frame.
+*/
+
int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
{
mlt_properties properties = MLT_FRAME_PROPERTIES( this );
mlt_get_image get_image = mlt_frame_pop_get_image( this );
mlt_producer producer = mlt_properties_get_data( properties, "test_card_producer", NULL );
+ int error = 0;
*width = *width >> 1 << 1;
if ( get_image != NULL )
{
- int error = 0;
mlt_position position = mlt_frame_get_position( this );
error = get_image( this, buffer, format, width, height, writable );
mlt_frame_set_position( this, position );
- return error;
}
else if ( mlt_properties_get_data( properties, "image", NULL ) != NULL )
{
mlt_properties_set_int( properties, "test_image", 1 );
}
- return 0;
+ return error;
}
uint8_t *mlt_frame_get_alpha_mask( mlt_frame this )
int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
{
+ mlt_get_audio get_audio = mlt_frame_pop_audio( this );
mlt_properties properties = MLT_FRAME_PROPERTIES( this );
int hide = mlt_properties_get_int( properties, "test_audio" );
- if ( hide == 0 && this->get_audio != NULL )
+ if ( hide == 0 && get_audio != NULL )
{
mlt_position position = mlt_frame_get_position( this );
- this->get_audio( this, buffer, format, frequency, channels, samples );
+ get_audio( this, buffer, format, frequency, channels, samples );
mlt_frame_set_position( this, position );
}
else if ( mlt_properties_get_data( properties, "audio", NULL ) )
uint8_t *out_ptr = out_line;
// Calculate a middle and possibly invalid pointer in the input
- uint8_t *in_middle = input + istride * ( iheight / 2 ) + ( iwidth / 2 ) * 2;
+ uint8_t *in_middle = input + istride * ( iheight / 2 ) + iwidth;
int in_line = - in_y_range * istride - in_x_range * 2;
int elements;
}
int active_width = 2 * iwidth;
- int inactive_width = out_x_range - in_x_range;
+ int left_inactive_width = out_x_range - in_x_range;
+ int right_inactive_width = left_inactive_width;
uint8_t *p = NULL;
uint8_t *end = NULL;
+ if ( in_line % 4 )
+ {
+ active_width -= 2;
+ in_middle += 2;
+ right_inactive_width += 2;
+ }
+
// Loop for the entirety of our output height.
while ( iheight -- )
{
out_ptr = out_line;
// Fill the outer part with black
- elements = inactive_width;
+ elements = left_inactive_width;
while ( elements -- )
{
*out_ptr ++ = 16;
}
// Fill the outer part with black
- elements = inactive_width;
+ elements = right_inactive_width;
while ( elements -- )
{
*out_ptr ++ = 16;
projects / melted / blobdiff