renderer: allow parameters to be changed mid-session

2020-01-22 14:05:37 +11:00
parent 8932a5abeb
commit fdbaa75dff
15 changed files with 118 additions and 32 deletions
@@ -44,7 +44,7 @@ VideoRenderBackend::VideoRenderBackend(QObject *parent) :

 bool VideoRenderBackend::InitInternal()
 {
-  cache_frame_load_buffer_.resize(PixelService::GetBufferSize(params_.format(), params_.effective_width(), params_.effective_height()));
+  ResizeCacheLoadBuffer();
  return true;
 }

@@ -84,6 +84,12 @@ void VideoRenderBackend::SetParameters(const VideoRenderingParams& params)
  // Set new parameters
  params_ = params;

+  // Resize frame load buffer
+  ResizeCacheLoadBuffer();
+
+  // Handle custom events from derivatives
+  ParamsChangedEvent();
+
  // Set params on all processors
  foreach (RenderWorker* worker, processors_) {
    static_cast<VideoRenderWorker*>(worker)->SetParameters(params_);
@@ -162,6 +168,10 @@ void VideoRenderBackend::InvalidateCacheInternal(const rational &start_range, co
  Requeue();
 }

+void VideoRenderBackend::ParamsChangedEvent()
+{
+}
+
 VideoRenderFrameCache *VideoRenderBackend::frame_cache()
 {
  return &frame_cache_;
@@ -406,3 +416,8 @@ void VideoRenderBackend::Requeue()

  CacheNext();
 }
+
+void VideoRenderBackend::ResizeCacheLoadBuffer()
+{
+  cache_frame_load_buffer_.resize(PixelService::GetBufferSize(params_.format(), params_.effective_width(), params_.effective_height()));
+}