2 files changed, 18 insertions, 0 deletions

diff --git a/apps/recorder/jpeg_load.c b/apps/recorder/jpeg_load.c
index 9ab42b7a9f..5b287aff75 100644
--- a/apps/recorder/jpeg_load.c
+++ b/apps/recorder/jpeg_load.c
@@ -2228,4 +2228,15 @@ int read_jpeg_fd(int fd,
 }
 #endif
 
+const size_t JPEG_DECODE_OVERHEAD =
+    /* Reserve an arbitrary amount for the decode buffer
+     * FIXME: Somebody who knows what they're doing should look at this */
+    (32 * 1024)
+#ifndef JPEG_FROM_MEM
+    /* Unless the struct jpeg is defined statically, we need to allocate
+     * it in the bitmap buffer as well */
+    + sizeof(struct jpeg)
+#endif
+    ;
+
 /**************** end JPEG code ********************/
diff --git a/apps/recorder/jpeg_load.h b/apps/recorder/jpeg_load.h
index 6ff96dabad..129b0fbf19 100644
--- a/apps/recorder/jpeg_load.h
+++ b/apps/recorder/jpeg_load.h
@@ -32,6 +32,13 @@
 #ifndef _JPEG_LOAD_H
 #define _JPEG_LOAD_H
 
+/* Approximate memory overhead required for JPEG decoding. This memory is
+ * taken from the bitmap buffer so you must ensure the buffer is big enough
+ * to contain all decoded pixel data plus decoder overhead, otherwise the
+ * image cannot be loaded. After the image is loaded this extra memory can
+ * be freed. */
+extern const size_t JPEG_DECODE_OVERHEAD;
+
 int read_jpeg_file(const char* filename,
                    struct bitmap *bm,
                    int maxsize,