From 3fc837c6eb2d087f303b60f155ce00b0e8f3998f Mon Sep 17 00:00:00 2001
From: neonloop
Date: Mon, 30 Jan 2023 15:56:43 +0000
Subject: Adds override for deferring load state by number of frames

Fixes instant play for fake-08 and pcsx_rearmmed with bios intro
---
 main.c                                      | 10 ++++
 overrides.h                                 |  1 +
 overrides/fake-08.h                         |  1 +
 overrides/pcsx_rearmed.h                    |  1 +
 patches/fake-08/0001-fix-resume-state.patch | 81 -----------------------------
 5 files changed, 13 insertions(+), 81 deletions(-)
 delete mode 100644 patches/fake-08/0001-fix-resume-state.patch

diff --git a/main.c b/main.c
index c14f2fb..14be5a3 100644
--- a/main.c
+++ b/main.c
@@ -611,6 +611,8 @@ int state_resume(void) {
 
 int main(int argc, char **argv) {
 	char content_path[MAX_PATH];
+	const struct core_override *override;
+	int defer_frames = 0;
 
 	if (argc > 1) {
 		if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
@@ -689,6 +691,14 @@ int main(int argc, char **argv) {
 
 	show_startup_message();
 
+	override = get_overrides();
+	defer_frames = CORE_OVERRIDE(override, defer_frames, 0);
+	if (defer_frames > 0) {
+		toggle_fast_forward(0);
+		while(defer_frames--) core_run_frame();
+		toggle_fast_forward(1);
+	}
+
 #ifdef FUNKEY_S
 	FK_InitMenu();
 	FK_Resume();
diff --git a/overrides.h b/overrides.h
index 2ab0633..928bb6d 100644
--- a/overrides.h
+++ b/overrides.h
@@ -35,6 +35,7 @@ struct core_override {
 	me_bind_action* emu_actions;
 	const size_t emu_action_size;
 	const struct core_override_option* options;
+	int defer_frames;
 	int needs_reopen;
 	int prevent_resume;
 };
diff --git a/overrides/fake-08.h b/overrides/fake-08.h
index 8773958..8dfa02c 100644
--- a/overrides/fake-08.h
+++ b/overrides/fake-08.h
@@ -16,4 +16,5 @@ me_bind_action fake08_ctrl_actions[] =
 	.core_name = "fake-08",                               \
 	.actions = fake08_ctrl_actions,                       \
 	.action_size = array_size(fake08_ctrl_actions),       \
+	.defer_frames = 3,                                    \
 }
diff --git a/overrides/pcsx_rearmed.h b/overrides/pcsx_rearmed.h
index d5b20d7..c1d92b9 100644
--- a/overrides/pcsx_rearmed.h
+++ b/overrides/pcsx_rearmed.h
@@ -256,4 +256,5 @@ const struct core_override_startup_msg pcsx_rearmed_startup_msg = {
 	.actions = pcsx_rearmed_ctrl_actions,                  \
 	.action_size = array_size(pcsx_rearmed_ctrl_actions),  \
 	.options = pcsx_rearmed_core_option_overrides,         \
+	.defer_frames = 3,                                     \
 }
diff --git a/patches/fake-08/0001-fix-resume-state.patch b/patches/fake-08/0001-fix-resume-state.patch
deleted file mode 100644
index b3d73bc..0000000
--- a/patches/fake-08/0001-fix-resume-state.patch
+++ /dev/null
@@ -1,81 +0,0 @@
-diff --git a/platform/libretro/libretro.cpp b/platform/libretro/libretro.cpp
-index 927ea8d4b8d1658a1d7521fe7e9abcbdede0ba5f..63a43f3f065344cdf45e0b10e5c9c089736695f2 100644
---- a/platform/libretro/libretro.cpp
-+++ b/platform/libretro/libretro.cpp
-@@ -82,6 +82,46 @@ EXPORT void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_
- EXPORT void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
- EXPORT void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
- 
-+
-+static int frames = 0;
-+static int defer_frames = 2;
-+static void* deferred_data = NULL;
-+static size_t deferred_size = 0;
-+
-+static void free_deferred_data(void) {
-+	if (deferred_size) {
-+		if (log_cb) log_cb(RETRO_LOG_INFO, "Freed deferred save state.\n");
-+		free(deferred_data);
-+		deferred_data = NULL;
-+		deferred_size = 0;
-+	}
-+}
-+
-+static void defer_unserialize(const void *data, size_t size) {
-+	free_deferred_data();
-+
-+	if (data==NULL || size<=0) return;
-+
-+	if (log_cb) log_cb(RETRO_LOG_INFO, "Deferred save state load.\n");
-+
-+	deferred_data = malloc(size);
-+	memcpy(deferred_data, data, size);
-+	deferred_size = size;
-+}
-+static void update_deferred(void) {
-+	frames += 1;
-+
-+	if (frames<defer_frames) return;
-+
-+	if (deferred_size==0) return;
-+
-+	retro_unserialize(deferred_data, deferred_size);
-+
-+	if (log_cb) log_cb(RETRO_LOG_INFO, "Loaded deferred save state.\n");
-+
-+	free_deferred_data();
-+}
-+
- EXPORT void retro_init()
- {
-     retro_log_callback log;
-@@ -132,6 +172,8 @@ EXPORT void retro_deinit()
-     if (log_cb) {
-         log_cb(RETRO_LOG_INFO, "Retro deinit called. tearing down\n");
-     }
-+	free_deferred_data();
-+	
-     //delete things created in init
-     _vm->CloseCart();
-     _host->oneTimeCleanup();
-@@ -205,6 +247,8 @@ int flip = 0;
- 
- EXPORT void retro_run()
- {
-+	if (frames<defer_frames) update_deferred();
-+	
-     //TODO: improve this so slower hardware can play 30fps games at full speed
-     if (_vm->getTargetFps() == 60 || frame % 2 == 0)
-     {
-@@ -396,6 +440,11 @@ EXPORT bool retro_serialize(void *data, size_t size)
- 
- EXPORT bool retro_unserialize(const void *data, size_t size)
- {
-+	if (frames<defer_frames) {
-+		defer_unserialize(data,size);
-+		return true;
-+	}
-+	
-     if (log_cb) {
-         log_cb(RETRO_LOG_INFO, "lua deserialize\n");
-     }
-- 
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