From 3bac45e737655af9f8fbf7734e3a17620fcdec47 Mon Sep 17 00:00:00 2001
From: guillempages <guillempages@users.noreply.github.com>
Date: Thu, 28 Nov 2024 04:55:20 +0100
Subject: [PATCH] [online_image]Don't access decoder if not initialized (#7882)

---
 esphome/components/online_image/png_image.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/esphome/components/online_image/png_image.cpp b/esphome/components/online_image/png_image.cpp
index c8e215a91d..4c4c22f9b7 100644
--- a/esphome/components/online_image/png_image.cpp
+++ b/esphome/components/online_image/png_image.cpp
@@ -49,6 +49,10 @@ void PngDecoder::prepare(uint32_t download_size) {
 }
 
 int HOT PngDecoder::decode(uint8_t *buffer, size_t size) {
+  if (!this->pngle_) {
+    ESP_LOGE(TAG, "PNG decoder engine not initialized!");
+    return -1;
+  }
   if (size < 256 && size < this->download_size_ - this->decoded_bytes_) {
     ESP_LOGD(TAG, "Waiting for data");
     return 0;