Method ProcessFrame

src/EffectBase.cpp:514–546

}

std::shared_ptr<openshot::Frame> EffectBase::ProcessFrame(std::shared_ptr<openshot::Frame> frame, int64_t frame_number) {
	// Audio-only effects skip common mask handling.
	if (!info.has_video || !mask_reader)
		return GetFrame(frame, frame_number);

	// Effects that already apply masks inside GetFrame() should bypass common blend handling.
	if (HandlesMaskInternally())
		return GetFrame(frame, frame_number);

	auto pre_image = frame->GetImage();
	if (!pre_image || pre_image->isNull())
		return GetFrame(frame, frame_number);

	const auto original_image = std::make_shared<QImage>(pre_image->copy());
	auto output_frame = GetFrame(frame, frame_number);
	if (!output_frame)
		return output_frame;
	auto effected_image = output_frame->GetImage();
	if (!effected_image || effected_image->isNull() ||
		effected_image->size() != original_image->size())
		return output_frame;

	auto mask_image = GetMaskImage(effected_image, frame_number);
	if (!mask_image || mask_image->isNull())
		return output_frame;

	if (UseCustomMaskBlend(frame_number))
		ApplyCustomMaskBlend(original_image, effected_image, mask_image, frame_number);
	else
		BlendWithMask(original_image, effected_image, mask_image);

	return output_frame;
}

/// Parent clip object of this reader (which can be unparented and NULL)
openshot::ClipBase* EffectBase::ParentClip() {