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Make event_disk_control_set_index and event_check_disk_prev more

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robust
This commit is contained in:
twinaphex 2015-06-25 15:42:05 +02:00
parent 13d7a7349f
commit 0349be056b
1 changed files with 28 additions and 6 deletions
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34
command_event.c
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@ -368,9 +368,20 @@ static void event_disk_control_set_index(unsigned idx)
static void event_check_disk_prev(
const struct retro_disk_control_callback *control)
{
unsigned num_disks = control->get_num_images();
unsigned current = control->get_image_index();
bool disk_prev_enable = num_disks && num_disks != UINT_MAX;
unsigned num_disks = 0;
unsigned current = 0;
bool disk_prev_enable = false;
if (!control)
return;
if (!control->get_num_images)
return;
if (!control->get_image_index)
return;
num_disks = control->get_num_images();
current = control->get_image_index();
disk_prev_enable = num_disks && num_disks != UINT_MAX;
if (!disk_prev_enable)
{
@ -392,9 +403,20 @@ static void event_check_disk_prev(
static void event_check_disk_next(
const struct retro_disk_control_callback *control)
{
unsigned num_disks = control->get_num_images();
unsigned current = control->get_image_index();
bool disk_next_enable = num_disks && num_disks != UINT_MAX;
unsigned num_disks = 0;
unsigned current = 0;
bool disk_next_enable = false;
if (!control)
return;
if (!control->get_num_images)
return;
if (!control->get_image_index)
return;
num_disks = control->get_num_images();
current = control->get_image_index();
disk_next_enable = num_disks && num_disks != UINT_MAX;
if (!disk_next_enable)
{