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Fix content loading via file browser on platforms with 'broken' core handling (i.e. emscripten)

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This commit is contained in:
jdgleaver 2021-05-13 15:32:25 +01:00
parent 66c77af4a6
commit 6f471e0660
1 changed files with 71 additions and 7 deletions
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78
menu/menu_displaylist.c
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@ -1094,14 +1094,78 @@ static unsigned menu_displaylist_parse_supported_cores(menu_displaylist_info_t *
/* Fallback */
if (!core_available)
{
if (menu_entries_append_enum(info->list,
msg_hash_to_str(MENU_ENUM_LABEL_VALUE_NO_CORES_AVAILABLE),
msg_hash_to_str(MENU_ENUM_LABEL_NO_CORES_AVAILABLE),
MENU_ENUM_LABEL_NO_CORES_AVAILABLE,
0, 0, 0))
count++;
/* We have to handle an annoying special case here.
* Some RetroArch ports (e.g. emscripten) are 'broken'
* by design - they do not handle cores correctly,
* resulting in empty core_info lists and thus no
* concept of supported content. These builds are
* typically static, such that the currently running
* core is the only one available. To enable the
* loading of *any* content on these troublesome
* platforms, we therefore have to:
* 1) Detect the presence of a running core
* 2) Blindly add a menu entry enabling the
* selection of this core
* 3) Hope that the user does not attempt to
* load unsupported content... */
char exts[32];
exts[0] = '\0';
info->download_core = true;
/* Attempt to identify 'broken' platforms by fetching
* the core file extension - if there is none, then
* it is impossible for RetroArch to populate a
* core_info list */
if (!frontend_driver_get_core_extension(exts, sizeof(exts)) ||
string_is_empty(exts))
{
struct retro_system_info *system = runloop_get_libretro_system_info();
const char *core_path = core_path_current;
const char *core_name = system ? system->library_name : NULL;
if (!string_is_empty(core_path))
{
/* If we have a valid 'currently running' core
* path, add an entry for this core to the list */
if (menu_entries_append_enum(info->list, core_path,
msg_hash_to_str(current_core_enum_label),
current_core_enum_label, FILE_TYPE_DIRECT_LOAD, 0, 0))
{
if (!string_is_empty(core_name))
file_list_set_alt_at_offset(info->list, 0, core_name);
core_available = true;
count++;
}
}
else if (!string_is_empty(core_name))
{
/* If we have a valid core name, but no core
* path, then RetroArch on this platform is
* likely to be unusable. But this legacy code
* path has existed for many years, and since
* we do not know who added it, or why, we
* shall continue to include it lest we break
* an unknown platform... */
if (menu_entries_append_enum(info->list, core_name,
msg_hash_to_str(current_core_enum_label),
current_core_enum_label, FILE_TYPE_DIRECT_LOAD, 0, 0))
{
core_available = true;
count++;
}
}
}
if (!core_available)
{
if (menu_entries_append_enum(info->list,
msg_hash_to_str(MENU_ENUM_LABEL_VALUE_NO_CORES_AVAILABLE),
msg_hash_to_str(MENU_ENUM_LABEL_NO_CORES_AVAILABLE),
MENU_ENUM_LABEL_NO_CORES_AVAILABLE,
0, 0, 0))
count++;
info->download_core = true;
}
}
return count;