From 656d69399a998a47b8172f7253a88b47a6f027e9 Mon Sep 17 00:00:00 2001
From: Phil Howard <phil@gadgetoid.com>
Date: Thu, 9 Jun 2022 20:37:41 +0100
Subject: [PATCH] JPEGDEC: Fix dither buffer size

---
 libraries/jpegdec/JPEGDEC.cpp           | 1 +
 micropython/modules/jpegdec/jpegdec.cpp | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/libraries/jpegdec/JPEGDEC.cpp b/libraries/jpegdec/JPEGDEC.cpp
index 5ac0d1d4..fd3c82e0 100644
--- a/libraries/jpegdec/JPEGDEC.cpp
+++ b/libraries/jpegdec/JPEGDEC.cpp
@@ -192,6 +192,7 @@ int JPEGDEC::decode(int x, int y, int iOptions)
     return DecodeJPEG(&_jpeg);
 } /* decode() */
 
+// TODO PR these tweaks to https://github.com/bitbank2/JPEGDEC
 int JPEGDEC::decodeDither(int x, int y, uint8_t *pDither, int iOptions)
 {
     _jpeg.iXOffset = x;
diff --git a/micropython/modules/jpegdec/jpegdec.cpp b/micropython/modules/jpegdec/jpegdec.cpp
index 6a124bd3..bc333202 100644
--- a/micropython/modules/jpegdec/jpegdec.cpp
+++ b/micropython/modules/jpegdec/jpegdec.cpp
@@ -177,7 +177,7 @@ mp_obj_t _JPEG_decode(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args
     int result = -1;
 
     if(self->graphics->graphics->pen_type == PicoGraphics::PEN_P4) {
-        uint8_t *buf = new uint8_t[1024];
+        uint8_t *buf = new uint8_t[2048];
         result = self->jpeg->decodeDither(x, y, buf, f);
         delete[] buf;
     } else {