BatchRenderer: handle QLOTTIE_RENDER_CACHE_SIZE env var

handling it in every LottieAnimation instance is a waste

Change-Id: I4de7673d0de0fc5c3bab04b9db419a62ac8b5580
Reviewed-by: Rebecca Worledge <rebecca.worledge@theqtcompany.com>

3 files changed, 12 insertions, 17 deletions

diff --git a/src/imports/lottieanimation.cpp b/src/imports/lottieanimation.cpp
index ea0c308..58e3043 100644
--- a/src/imports/lottieanimation.cpp
+++ b/src/imports/lottieanimation.cpp
@@ -198,12 +198,6 @@ LottieAnimation::LottieAnimation(QQuickItem *parent)
 
     m_frameRenderThread = BatchRenderer::instance();
 
-    QByteArray cacheStr = qgetenv("QLOTTIE_RENDER_CACHE_SIZE");
-    bool ok = false;
-    int cacheSize = cacheStr.toInt(&ok);
-    if (ok)
-       m_frameRenderThread->setCacheSize(cacheSize);
-
     qRegisterMetaType<LottieAnimation*>();
 }
 
diff --git a/src/imports/rasterrenderer/batchrenderer.cpp b/src/imports/rasterrenderer/batchrenderer.cpp
index 6b64e7a..eb0cc44 100644
--- a/src/imports/rasterrenderer/batchrenderer.cpp
+++ b/src/imports/rasterrenderer/batchrenderer.cpp
@@ -52,6 +52,17 @@ Q_LOGGING_CATEGORY(lcLottieQtBodymovinRenderThread, "qt.lottieqt.bodymovin.rende
 
 BatchRenderer *BatchRenderer::m_rendererInstance = nullptr;
 
+BatchRenderer::BatchRenderer()
+    : QThread()
+{
+    const QByteArray cacheStr = qgetenv("QLOTTIE_RENDER_CACHE_SIZE");
+    int cacheSize = cacheStr.toInt();
+    if (cacheSize > 0) {
+        qCDebug(lcLottieQtBodymovinRenderThread) << "Setting frame cache size to" << cacheSize;
+        m_cacheSize = cacheSize;
+    }
+}
+
 BatchRenderer::~BatchRenderer()
 {
     qDeleteAll(m_animData);
@@ -149,15 +160,6 @@ BMBase *BatchRenderer::getFrame(LottieAnimation *animator, int frameNumber)
         return nullptr;
 }
 
-void BatchRenderer::setCacheSize(int size)
-{
-    if (size < 1 || isRunning())
-        return;
-
-    qCDebug(lcLottieQtBodymovinRenderThread) << "Setting frame cache size to" << size;
-    m_cacheSize = size;
-}
-
 void BatchRenderer::prerender(Entry *animEntry)
 {
     while (animEntry->frameCache.count() < m_cacheSize) {
diff --git a/src/imports/rasterrenderer/batchrenderer.h b/src/imports/rasterrenderer/batchrenderer.h
index 4ede260..7e5830e 100644
--- a/src/imports/rasterrenderer/batchrenderer.h
+++ b/src/imports/rasterrenderer/batchrenderer.h
@@ -77,7 +77,6 @@ public slots:
     bool gotoFrame(LottieAnimation *animator, int frame);
 
     void frameRendered(LottieAnimation *animator, int frameNumber);
-    void setCacheSize(int size);
 
 protected:
     void run() override;
@@ -87,7 +86,7 @@ protected:
     void prerender(Entry *animEntry);
 
 private:
-    BatchRenderer() = default;
+    BatchRenderer();
 
     void pruneFrameCache(Entry* e);