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iidx: apply signature patch for ASIO compatibility fix in iidx32 (#381)

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## Link to GitHub Issue, if one exists
n/a

## Description of change
Apply this fix automatically when needed -
https://github.com/two-torial/sp2xpatcher/pull/33

## Testing
Tested iidx31 to see that the patch does not apply
Checked -audiohookdisable to see that the logic gets skipped
Tested 2025041500 and 2025082500.
This commit is contained in:
bicarus-dev
2025-09-26 01:26:49 -07:00
committed by GitHub
parent c0698a3872
commit ddc8061268
1 changed files with 45 additions and 1 deletions
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src/spice2x/games/iidx/iidx.cpp
+44
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@@ -8,6 +8,7 @@
#include "games/iidx/legacy_camera.h"
#include "hooks/audio/audio.h"
#include "hooks/avshook.h"
#include "hooks/cfgmgr32hook.h"
#include "hooks/devicehook.h"
@@ -376,7 +377,11 @@ namespace games::iidx {
}
}
if (hooks::audio::ENABLED) {
apply_audio_hacks();
} else {
log_warning("iidx", "skipping audio hooks; disabled by user");
}
// ASIO device hook
RegCloseKey_orig = detour::iat_try(
@@ -766,22 +771,26 @@ namespace games::iidx {
0);
// attempt to detect ASIO support
// <=24 : 32-bit only
// 25-26: has neither (no patch needed - WASAPI Exclusive by default)
// 27-30: has both (envvar will be respected, ASIO or WASAPI)
// 31+: only has XONAR (ASIO by default, signature patch can be used to force WASAPI - for now)
if (!has_SOUND_OUTPUT_DEVICE && !has_XONAR_SOUND_CARD) {
// iidx 25-26
log_info("iidx", "This game only uses WASAPI audio engine");
return;
}
if (has_SOUND_OUTPUT_DEVICE && has_XONAR_SOUND_CARD) {
// iidx 27-30
log_info("iidx", "This game accepts SOUND_OUTPUT_DEVICE environment variable");
return;
}
log_info("iidx", "This game supports ASIO but does not accept SOUND_OUTPUT_DEVICE environment variable");
// patch game to force wasapi
if (SOUND_OUTPUT_DEVICE_IN_EFFECT.has_value() && SOUND_OUTPUT_DEVICE_IN_EFFECT.value() == "wasapi") {
intptr_t result = replace_pattern(
avs::game::DLL_INSTANCE,
@@ -800,6 +809,41 @@ namespace games::iidx {
"Successfully forced WASAPI as audio engine using signature matching @ 0x{:x}.",
result);
}
} else {
log_info("iidx", "Not applying force wasapi patch; game will use ASIO");
}
// patch iidx32+ for asio compatibility
// only do this if NOT wasapi (as opposed to checking if it's asio)
// the patch is only really needed for (some) non-XONAR devices but since people sometimes disguise
// other devices as a XONAR, don't check for the exact string (common ASIO workaround for INF)
if (avs::game::is_ext(2024090100, MAXINT) &&
!(SOUND_OUTPUT_DEVICE_IN_EFFECT.has_value() && SOUND_OUTPUT_DEVICE_IN_EFFECT.value() == "wasapi")) {
// in iidx32 final:
// ff 50 08 call QWORD PTR [rax+0x8] ; ASIO instance AddRef
// 48 8b 4b 08 mov rcx,QWORD PTR [rbx+0x8]
// 48 8b 01 mov rax,QWORD PTR [rcx]
// ff 50 08 call QWORD PTR [rax+0x8] ; ASIO instance AddRef
intptr_t result = replace_pattern(
avs::game::DLL_INSTANCE,
"FF50????????????????FF50??4533C94533C0418D51",
"????????????????????909090??????????????????",
0, 0);
if (result == 0) {
log_warning(
"iidx",
"Failed to apply ASIO compatibility fix for iidx32+. "
"Unless patches are applied, your ASIO device ({}) may hang or fail to work",
ASIO_DRIVER->c_str());
} else {
log_info(
"iidx",
"Successfully applied ASIO compatibility fix for iidx32+ using signature matching @ 0x{:x}.",
result);
}
}
#endif