X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Femu.c;h=f43f9b72b4d3c8d50d867169669fbf9a1a6de945;hb=e5589947f51075b275b4f8555b40eccdb01e3f7c;hp=a98a5be86576f11430b005b2eae376bb5d291698;hpb=2fb6c387829e4a8cabb7f45490a8aa792d068ee0;p=libpicofe.git

diff --git a/gp2x/emu.c b/gp2x/emu.c
index a98a5be..f43f9b7 100644
--- a/gp2x/emu.c
+++ b/gp2x/emu.c
@@ -54,13 +54,14 @@ extern int crashed_940;
 static short sndBuffer[2*44100/50];
 static char noticeMsg[64];					// notice msg to draw
 static struct timeval noticeMsgTime = { 0, 0 };	// when started showing
-static int reset_timing, osd_fps_x;
+static int osd_fps_x;
 static int combo_keys = 0, combo_acts = 0;	// keys and actions which need button combos
 static int gp2x_old_gamma = 100;
 static unsigned char *movie_data = NULL;
 static int movie_size = 0;
 unsigned char *framebuff = 0;  // temporary buffer for alt renderer
 int state_slot = 0;
+int reset_timing = 0;
 
 /*
 // tmp
@@ -393,6 +394,8 @@ int emu_ReloadRom(void)
 }
 
 
+static void emu_msg_cb(const char *msg);
+
 void emu_Init(void)
 {
 	// make temp buffer for alt renderer
@@ -409,6 +412,7 @@ void emu_Init(void)
 	mkdir("cfg", 0777);
 
 	PicoInit();
+	PicoMessage = emu_msg_cb;
 
 //	logf = fopen("log.txt", "w");
 }
@@ -771,6 +775,26 @@ static void vidResetMode(void)
 }
 
 
+static void emu_msg_cb(const char *msg)
+{
+	if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
+		// 8-bit renderers
+		gp2x_memset_all_buffers(320*232, 0xe0, 320*8);
+		osd_text(4, 232, msg);
+		gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);
+	} else {
+		// 16bit accurate renderer
+		gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);
+		osd_text(4, 232, msg);
+		gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);
+	}
+	gettimeofday(&noticeMsgTime, 0);
+	noticeMsgTime.tv_sec -= 2;
+
+	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
+	reset_timing = 1;
+}
+
 static void emu_state_cb(const char *str)
 {
 	clearArea(0);
@@ -949,25 +973,17 @@ static void updateSound(int len)
 {
 	if (PicoOpt&8) len<<=1;
 
-	gp2x_sound_write(PsndOut, len<<1);
+	/* avoid writing audio when lagging behind to prevent audio lag */
+	if (PicoSkipFrame != 2)
+		gp2x_sound_write(PsndOut, len<<1);
 }
 
 
-static void SkipFrame(int do_sound)
+static void SkipFrame(int do_audio)
 {
-	void *sndbuff_tmp = 0;
-	if (PsndOut && !do_sound) {
-		sndbuff_tmp = PsndOut;
-		PsndOut = 0;
-	}
-
-	PicoSkipFrame=1;
+	PicoSkipFrame=do_audio ? 1 : 2;
 	PicoFrame();
 	PicoSkipFrame=0;
-
-	if (sndbuff_tmp && !do_sound) {
-		PsndOut = sndbuff_tmp;
-	}
 }
 
 
@@ -977,7 +993,6 @@ void emu_forced_frame(void)
 
 	PicoOpt |= 0x10;
 	PicoFrameFull();
-	PicoOpt = po_old;
 
 	if (!(Pico.video.reg[12]&1)) {
 		vidCpyM2 = vidCpyM2_32col;
@@ -987,6 +1002,8 @@ void emu_forced_frame(void)
 	vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);
 	vidConvCpyRGB32(localPal, Pico.cram, 0x40);
 	gp2x_video_setpalette(localPal, 0x40);
+
+	PicoOpt = po_old;
 }
 
 static void simpleWait(int thissec, int lim_time)
@@ -1154,7 +1171,9 @@ void emu_Loop(void)
 				if (frames_shown > frames_done) frames_shown = frames_done;
 			}
 		}
-
+#if 0
+		sprintf(fpsbuff, "%05i", Pico.m.frame_count);
+#endif
 		lim_time = (frames_done+1) * target_frametime;
 		if(currentConfig.Frameskip >= 0) { // frameskip enabled
 			for(i = 0; i < currentConfig.Frameskip; i++) {
@@ -1171,8 +1190,14 @@ void emu_Loop(void)
 			}
 		} else if(tval.tv_usec > lim_time) { // auto frameskip
 			// no time left for this frame - skip
+			if (tval.tv_usec - lim_time >= 0x300000) {
+				/* something caused a slowdown for us (disk access? cache flush?)
+				 * try to recover by resetting timing... */
+				reset_timing = 1;
+				continue;
+			}
 			updateKeys();
-			SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;
+			SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;
 			continue;
 		}
 
@@ -1239,14 +1264,14 @@ if (Pico.m.frame_count == 31563) {
 
 		// check time
 		gettimeofday(&tval, 0);
-		if(thissec != tval.tv_sec) tval.tv_usec+=1000000;
+		if (thissec != tval.tv_sec) tval.tv_usec+=1000000;
 
-		// sleep if we are still too fast
-		if(PsndOut != 0 || currentConfig.Frameskip < 0)
+		if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 0x300000) // slowdown detection
+			reset_timing = 1;
+		else if (PsndOut != NULL || currentConfig.Frameskip < 0)
 		{
+			// sleep if we are still too fast
 			// usleep sleeps for ~20ms minimum, so it is not a solution here
-			gettimeofday(&tval, 0);
-			if(thissec != tval.tv_sec) tval.tv_usec+=1000000;
 			if(tval.tv_usec < lim_time)
 			{
 				// we are too fast