Add poll-type - can change it only at compile-time right now

command_event.c

@@ -599,6 +599,7 @@ static bool event_init_core(void)
    if (!event_init_content())
       return false;
 
+   core.poll_type = POLL_TYPE_LATE;
    retro_init_libretro_cbs(&retro_ctx);
    rarch_ctl(RARCH_CTL_INIT_SYSTEM_AV_INFO, NULL);
 

dynamic.h

@@ -123,6 +123,7 @@ bool rarch_environment_cb(unsigned cmd, void *data);
 
 struct retro_core_t
 {
+   unsigned poll_type;
    void (*retro_init)(void);
    void (*retro_deinit)(void);
    unsigned (*retro_api_version)(void);

libretro_version_1.c

@@ -37,6 +37,21 @@
 
 struct retro_callbacks retro_ctx;
 
+static bool input_polled;
+
+static int16_t input_state_poll(unsigned port,
+      unsigned device, unsigned idx, unsigned id)
+{
+   if (core.poll_type == POLL_TYPE_LATE)
+   {
+      if (!input_polled)
+         input_poll();
+
+      input_polled = true;
+   }
+   return input_state(port, device, idx, id);
+}
+
 /**
  * retro_set_default_callbacks:
  * @data           : pointer to retro_callbacks object
@@ -53,7 +68,7 @@ void retro_set_default_callbacks(void *data)
    cbs->frame_cb        = video_driver_frame;
    cbs->sample_cb       = audio_driver_sample;
    cbs->sample_batch_cb = audio_driver_sample_batch;
-   cbs->state_cb        = input_state;
+   cbs->state_cb        = input_state_poll;
    cbs->poll_cb         = input_poll;
 }
 
@@ -68,6 +83,27 @@ void retro_uninit_libretro_cbs(void)
    cbs->poll_cb         = NULL;
 }
 
+
+void retro_run_core(void)
+{
+   switch (core.poll_type)
+   {
+      case POLL_TYPE_EARLY:
+         input_poll();
+         break;
+      case POLL_TYPE_LATE:
+         input_polled = false;
+         break;
+   }
+   core.retro_run();
+}
+
+static void input_poll_maybe(void)
+{
+   if (core.poll_type == POLL_TYPE_NORMAL)
+      input_poll();
+}
+
 /**
  * retro_init_libretro_cbs:
  * @data           : pointer to retro_callbacks object
@@ -88,8 +124,8 @@ void retro_init_libretro_cbs(void *data)
    core.retro_set_video_refresh(video_driver_frame);
    core.retro_set_audio_sample(audio_driver_sample);
    core.retro_set_audio_sample_batch(audio_driver_sample_batch);
-   core.retro_set_input_state(input_state);
+   core.retro_set_input_state(input_state_poll);
-   core.retro_set_input_poll(input_poll);
+   core.retro_set_input_poll(input_poll_maybe);
 
    retro_set_default_callbacks(cbs);
 
@@ -97,6 +133,9 @@ void retro_init_libretro_cbs(void *data)
    if (!netplay_driver_ctl(RARCH_NETPLAY_CTL_IS_DATA_INITED, NULL))
       return;
 
+   /* Force normal poll type for netplay. */
+   core.poll_type = POLL_TYPE_NORMAL;
+
    if (global->netplay.is_spectate)
    {
       core.retro_set_input_state(

libretro_version_1.h

@@ -24,6 +24,17 @@ extern "C" {
 
 #include "libretro.h"
 
+enum
+{
+   /* Polling is performed before call to retro_run */
+   POLL_TYPE_EARLY = 0,
+   /* Polling is performed when requested. */
+   POLL_TYPE_NORMAL,
+   /* Polling is performed on first call to retro_input_state
+    * per frame. */
+   POLL_TYPE_LATE
+};
+
 typedef struct retro_callbacks
 {
    retro_video_refresh_t frame_cb;
@@ -60,6 +71,9 @@ void retro_set_default_callbacks(void *data);
  **/
 void retro_set_rewind_callbacks(void);
 
+/* Runs the core for one frame. Use instead of core.retro_run(). */
+void retro_run_core(void);
+
 /**
  * retro_flush_audio:
  * @data                 : pointer to audio buffer.

menu/menu_display.c

@@ -321,7 +321,7 @@ bool menu_display_ctl(enum menu_display_ctl_state state, void *data)
             if (!libretro_input_is_blocked)
                input_driver_ctl(RARCH_INPUT_CTL_SET_LIBRETRO_INPUT_BLOCKED, NULL);
 
-            core.retro_run();
+            retro_run_core();
 
             input_driver_ctl(RARCH_INPUT_CTL_UNSET_LIBRETRO_INPUT_BLOCKED, NULL);
             return true;

menu/menu_display.h

@@ -25,6 +25,7 @@
 #include "../gfx/video_context_driver.h"
 #include "../gfx/font_driver.h"
 #include "../gfx/video_common.h"
+#include "../libretro_version_1.h"
 
 #ifdef __cplusplus
 extern "C" {

netplay/netplay_net.c

@@ -77,7 +77,7 @@ static void netplay_net_post_frame(netplay_t *netplay)
 #if defined(HAVE_THREADS) && !defined(RARCH_CONSOLE)
          lock_autosave();
 #endif
-         core.retro_run();
+         retro_run_core();
 #if defined(HAVE_THREADS) && !defined(RARCH_CONSOLE)
          unlock_autosave();
 #endif

runloop.c

@@ -1424,7 +1424,7 @@ int runloop_iterate(unsigned *sleep_ms)
       retro_sleep(settings->video.frame_delay);
 
    /* Run libretro for one frame. */
-   core.retro_run();
+   retro_run_core();
 
 #ifdef HAVE_CHEEVOS
    /* Test the achievements. */