fix FS#13060 - Seeking in long opus files leads to crash on Sansa Clip+

- increase decoder thread stack size just enough (2KiB) to
  avoid stack overflows when seeking in opus files
- only do so on devices with at least 8MiB of RAM

Change-Id: I7e7182ae866338b4aad6ed7e32391ddd667121bd

1 files changed, 3 insertions, 1 deletions

diff --git a/apps/codec_thread.c b/apps/codec_thread.c
index b511809d6d..e45e9aec6b 100644
--- a/apps/codec_thread.c
+++ b/apps/codec_thread.c
@@ -90,7 +90,9 @@ extern struct codec_api ci; /* from codecs.c */
 static unsigned int codec_thread_id; /* For modifying thread priority later */
 static struct event_queue codec_queue SHAREDBSS_ATTR;
 static struct queue_sender_list codec_queue_sender_list SHAREDBSS_ATTR;
-static long codec_stack[(DEFAULT_STACK_SIZE + 0x2000)/sizeof(long)] IBSS_ATTR;
+/* Workaround stack overflow in opus codec on highmem devices (see FS#13060). */
+#define WORKAROUND_FS13060 (MEMORYSIZE >= 8 ? 0x800 : 0)
+static long codec_stack[(DEFAULT_STACK_SIZE + 0x2000 + WORKAROUND_FS13060)/sizeof(long)] IBSS_ATTR;
 static const char codec_thread_name[] = "codec";
 
 static void unload_codec(void);