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extmod/modframebuf: Store underlying buffer object to prevent GC free.

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This commit is contained in:
Damien George 2016-12-09 12:58:45 +11:00
parent 5e393007b9
commit adf3cb5081
1 changed files with 2 additions and 0 deletions
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2
extmod/modframebuf.c
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@ -37,6 +37,7 @@
typedef struct _mp_obj_framebuf_t {
mp_obj_base_t base;
mp_obj_t buf_obj; // need to store this to prevent GC from reclaiming buf
void *buf;
uint16_t width, height, stride;
uint8_t format;
@ -133,6 +134,7 @@ STATIC mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size
mp_obj_framebuf_t *o = m_new_obj(mp_obj_framebuf_t);
o->base.type = type;
o->buf_obj = args[0];
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_WRITE);