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-rw-r--r--src/gdisp/gdisp_options.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gdisp/gdisp_options.h b/src/gdisp/gdisp_options.h
index 32429cde..0b250cd9 100644
--- a/src/gdisp/gdisp_options.h
+++ b/src/gdisp/gdisp_options.h
@@ -535,6 +535,16 @@
#ifndef GDISP_IMAGE_PNG_FILE_BUFFER_SIZE
#define GDISP_IMAGE_PNG_FILE_BUFFER_SIZE 8
#endif
+ /**
+ * @brief The PNG inflate decompression buffer size in bytes.
+ * @details Defaults to 32768
+ * @note Bigger is faster but requires more RAM.
+ * @note Must be >= 32768 due to the PNG 32K sliding window.
+ * @note More efficient code is generated if this value is a power of 2.
+ */
+ #ifndef GDISP_IMAGE_PNG_Z_BUFFER_SIZE
+ #define GDISP_IMAGE_PNG_Z_BUFFER_SIZE 32768
+ #endif
/**
* @}
*