lottie/parser: Fix crash issue when interpolation string is not present in lottie...

For some version of bodymovin file interpolation string is not part of the keyframe
in those case create one and add it to the cache.

Change-Id: I5853bd7a6f46140d16191c2b79622cfa1f6fb074

diff --git a/example/resource/loading_rectangles.json b/example/resource/loading_rectangles.json
new file mode 100644 (file)
index 0000000..eeb2235
--- /dev/null
+++ b/example/resource/loading_rectangles.json
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\ No newline at end of file

diff --git a/src/lottie/lottieparser.cpp b/src/lottie/lottieparser.cpp
index 59b76f2..5f29093 100644 (file)
--- a/src/lottie/lottieparser.cpp
+++ b/src/lottie/lottieparser.cpp
@@ -1714,6 +1714,7 @@ void LottieParserImpl::parseKeyFrame(LOTAnimInfo<T> &obj)
     VPointF        outTangent;
     const char *   interpolatorKey = nullptr;
     bool           hold = false;
+    bool           lastFrame = true;
     while (const char *key = NextObjectKey()) {
         if (0 == strcmp(key, "i")) {
             inTangent = parseInperpolatorPoint();
@@ -1734,6 +1735,7 @@ void LottieParserImpl::parseKeyFrame(LOTAnimInfo<T> &obj)
         } else if (0 == strcmp(key, "t")) {
             keyframe.mStartFrame = GetDouble();
         } else if (parseKeyFrameValue(key, keyframe.mValue)) {
+            lastFrame = false;
             continue;
         } else if (0 == strcmp(key, "h")) {
             hold = GetInt();
@@ -1759,6 +1761,13 @@ void LottieParserImpl::parseKeyFrame(LOTAnimInfo<T> &obj)
         keyframe.mEndFrame = keyframe.mStartFrame;
     }
 
+    char charArray[20];
+    if (!(lastFrame || interpolatorKey)) {
+        snprintf(charArray, 20, "%.2f_%.2f_%.2f_%.2f",
+                 inTangent.x(), inTangent.y(), outTangent.x(), outTangent.y());
+        interpolatorKey = charArray;
+    }
+
     // Try to find the interpolator from cache
     if (interpolatorKey) {
         auto search = compRef->mInterpolatorCache.find(interpolatorKey);