Rename avifSample to avifDecodeSample (in prep for avifEncodeSample)
diff --git a/include/avif/internal.h b/include/avif/internal.h
index 777f13f..02dd3ed 100644
--- a/include/avif/internal.h
+++ b/include/avif/internal.h
@@ -87,16 +87,16 @@
 // ---------------------------------------------------------------------------
 // avifCodecDecodeInput
 
-typedef struct avifSample
+typedef struct avifDecodeSample
 {
     avifROData data;
     avifBool sync; // is sync sample (keyframe)
-} avifSample;
-AVIF_ARRAY_DECLARE(avifSampleArray, avifSample, sample);
+} avifDecodeSample;
+AVIF_ARRAY_DECLARE(avifDecodeSampleArray, avifDecodeSample, sample);
 
 typedef struct avifCodecDecodeInput
 {
-    avifSampleArray samples;
+    avifDecodeSampleArray samples;
     avifBool alpha; // if true, this is decoding an alpha plane
 } avifCodecDecodeInput;