Updates for 0.2.2

per se.

.gitignore

@@ -1,3 +1,5 @@
 *.o
 ssnes
 /config.h
+/config.mk
+/tools/ssnes-joyconfig

Makefile

@@ -2,16 +2,25 @@ include config.mk
 
 TARGET = ssnes tools/ssnes-joyconfig
 
-OBJ = ssnes.o file.o driver.o settings.o dynamic.o message.o
+OBJ = ssnes.o file.o driver.o settings.o dynamic.o message.o rewind.o movie.o
 JOYCONFIG_OBJ = tools/ssnes-joyconfig.o conf/config_file.o
 HEADERS = $(wildcard */*.h) $(wildcard *.h)
 
 LIBS =
 DEFINES = -DHAVE_CONFIG_H
 
+ifneq ($(findstring Darwin,$(shell uname -a)),)
+   OSX := 1
+   LIBS += -framework AppKit
+else
+   OSX := 0
+endif
+
 ifeq ($(HAVE_SRC), 1)
    LIBS += $(SRC_LIBS)
    DEFINES += $(SRC_CFLAGS)
+else
+   OBJ += audio/hermite.o
 endif
 
 ifeq ($(HAVE_CONFIGFILE), 1)
@@ -36,8 +45,12 @@ ifeq ($(HAVE_ROAR), 1)
 endif
 ifeq ($(HAVE_AL), 1)
    OBJ += audio/openal.o
+ifeq ($(OSX),1)
+   LIBS += -framework OpenAL
+else
    LIBS += -lopenal
 endif
+endif
 ifeq ($(HAVE_JACK),1)
    OBJ += audio/jack.o
    LIBS += -ljack
@@ -50,8 +63,13 @@ endif
 
 ifeq ($(HAVE_SDL), 1)
    OBJ += gfx/gl.o input/sdl.o audio/sdl.o audio/buffer.o
-   LIBS += $(SDL_LIBS) -lGL
    DEFINES += $(SDL_CFLAGS)
+   LIBS += $(SDL_LIBS)
+ifeq ($(OSX),1)
+   LIBS += -framework OpenGL
+else
+   LIBS += -lGL
+endif
 endif
 
 ifeq ($(HAVE_CG), 1)
@@ -121,7 +139,8 @@ install: $(TARGET)
 	mkdir -p $(DESTDIR)$(PREFIX)/share/man/man1
 	install -m755 $(TARGET) $(DESTDIR)$(PREFIX)/bin 
 	install -m644 ssnes.cfg $(DESTDIR)/etc/ssnes.cfg
-	install -m644 docs/{ssnes,ssnes-joyconfig}.1 $(DESTDIR)$(PREFIX)/share/man/man1
+	install -m644 docs/ssnes.1 $(DESTDIR)$(PREFIX)/share/man/man1
+	install -m644 docs/ssnes-joyconfig.1 $(DESTDIR)$(PREFIX)/share/man/man1
 
 uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/{ssnes,ssnes-joyconfig}

Makefile.win32

@@ -1,12 +1,12 @@
 TARGET = ssnes.exe
 JTARGET = ssnes-joyconfig.exe
-OBJ = ssnes.o file.o driver.o conf/config_file.o settings.o dynamic.o message.o
+OBJ = ssnes.o file.o driver.o conf/config_file.o settings.o dynamic.o message.o rewind.o movie.o
 JOBJ = conf/config_file.o tools/main-stub.o tools/ssnes-joyconfig.o
 
 CC = gcc
 CXX = g++
 
-HAVE_SRC = 1
+HAVE_SRC = 0
 HAVE_SDL = 1
 HAVE_XML = 1
 HAVE_FREETYPE = 1
@@ -25,6 +25,8 @@ SDL_CFLAGS = -ISDL
 ifeq ($(HAVE_SRC), 1)
    LIBS += $(SRC_LIBS)
    DEFINES += $(SRC_CFLAGS) -DHAVE_SRC
+else
+   OBJ += audio/hermite.o
 endif
 
 ifeq ($(HAVE_SDL), 1)
@@ -97,7 +99,7 @@ clean:
 	rm -f tools/*.o
 
 dist: all
-	zip -r ssnes-win32-0.2.1.zip $(TARGET) ssnes.cfg snes.dll libxml2.dll iconv.dll zlib1.dll SDL.dll libsamplerate-0.dll freetype6.dll xaudio-c.dll rsound.dll pthreadGC2.dll README.win32.txt $(JTARGET)
+	zip -r ssnes-win32-0.2.2.zip $(TARGET) ssnes.cfg snes.dll libxml2.dll iconv.dll zlib1.dll SDL.dll libsamplerate-0.dll freetype6.dll xaudio-c.dll rsound.dll pthreadGC2.dll README.win32.txt $(JTARGET)
 
 libs:
 	wget https://github.com/downloads/Themaister/SSNES/SSNES-win32-libs.zip --no-check-certificate

README.md

@@ -18,13 +18,13 @@ SSNES requires these libraries to build:
 
    - [libsnes](http://byuu.org/bsnes/)
    - SDL
-   - libsamplerate
 
 SSNES can utilize these libraries if enabled:
 
    - nvidia-cg-toolkit
    - libxml2 (bSNES XML shaders)
    - libfreetype2 (TTF font rendering on screen)
+   - libsamplerate
 
 SSNES needs at least one of these audio driver libraries:
 

audio/hermite.c

@@ -0,0 +1,110 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Hermite resampler based on bsnes' audio library.
+
+#include "hermite.h"
+#include <stdlib.h>
+
+#define MAX_CHANS 8
+
+struct hermite_resampler
+{
+   float chan_data[MAX_CHANS][4];
+   double r_frac;
+   unsigned chans;
+};
+
+static inline float hermite_kernel(float mu1, float a, float b, float c, float d)
+{
+   float mu2, mu3, m0, m1, a0, a1, a2, a3;
+
+   mu2 = mu1 * mu1;
+   mu3 = mu2 * mu1;
+
+   m0  = (c - a) * 0.5;
+   m1  = (d - b) * 0.5;
+
+   a0 = +2 * mu3 - 3 * mu2 + 1;
+   a1 =      mu3 - 2 * mu2 + mu1;
+   a2 =      mu3 -     mu2;
+   a3 = -2 * mu3 + 3 * mu2;
+
+   return (a0 * b) + (a1 * m0) + (a2 * m1) + (a3 * c);
+}
+
+hermite_resampler_t *hermite_new(unsigned channels)
+{
+   if (channels > MAX_CHANS)
+      return NULL;
+
+   hermite_resampler_t *re = calloc(1, sizeof(*re));
+   if (!re)
+      return NULL;
+   re->chans = channels;
+   return re;
+}
+
+void hermite_process(hermite_resampler_t *re, struct hermite_data *data)
+{
+   double r_step = 1.0 / data->src_ratio;
+   size_t processed_out = 0;
+   size_t processed_in = 0;
+
+   size_t in_frames = data->input_frames;
+   size_t out_frames = data->output_frames;
+   const float *in_data = data->data_in;
+   float *out_data = data->data_out;
+
+   while (processed_in < in_frames && processed_out < out_frames)
+   {
+      while (re->r_frac <= 1.0 && processed_out < out_frames)
+      {
+         re->r_frac += r_step;
+         for (unsigned i = 0; i < re->chans; i++)
+         {
+            float res = hermite_kernel(re->r_frac, 
+                  re->chan_data[i][0], re->chan_data[i][1], re->chan_data[i][2], re->chan_data[i][3]);
+            *out_data++ = res;
+         }
+         processed_out++;
+      }
+
+      if (re->r_frac >= 1.0)
+      {
+         re->r_frac -= 1.0;
+
+         for (unsigned i = 0; i < re->chans; i++)
+         {
+            re->chan_data[i][0] = re->chan_data[i][1];
+            re->chan_data[i][1] = re->chan_data[i][2];
+            re->chan_data[i][2] = re->chan_data[i][3];
+            re->chan_data[i][3] = *in_data++;
+         }
+         processed_in++;
+      }
+   }
+
+   data->input_frames_used = processed_in;
+   data->output_frames_gen = processed_out;
+}
+
+void hermite_free(hermite_resampler_t *re)
+{
+   free(re);
+}
+

audio/hermite.h

@@ -0,0 +1,50 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Hermite resampler based on bsnes' audio library.
+// Attempts to be similiar to the libsamplerate process interface.
+
+#ifndef __SSNES_HERMITE_H
+#define __SSNES_HERMITE_H
+
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef struct hermite_resampler hermite_resampler_t;
+
+hermite_resampler_t *hermite_new(unsigned channels);
+
+struct hermite_data
+{
+   const float *data_in;
+   float *data_out;
+
+   size_t input_frames;
+   size_t output_frames;
+
+   size_t input_frames_used;
+   size_t output_frames_gen;
+
+   bool end_of_input; // Just used to clone the SRC API.
+   double src_ratio;
+};
+
+void hermite_process(hermite_resampler_t *re, struct hermite_data *data);
+void hermite_free(hermite_resampler_t *re);
+
+#endif
+

audio/openal.c

@@ -17,8 +17,15 @@
 
 
 #include "driver.h"
+
+#ifdef __APPLE__
+#include <OpenAL/al.h>
+#include <OpenAL/alc.h>
+#else
 #include <AL/al.h>
 #include <AL/alc.h>
+#endif
+
 #include <time.h>
 #include <string.h>
 

audio/rsound.c

@@ -19,15 +19,41 @@
 #include "driver.h"
 #include <stdlib.h>
 #include <rsound.h>
+#include "buffer.h"
+#include <stdbool.h>
+#include "SDL.h"
 
 typedef struct rsd
 {
    rsound_t *rd;
-   int latency;
-   int rate;
-   int nonblock;
+   bool nonblock;
+   volatile bool has_error;
+
+   rsound_fifo_buffer_t *buffer;
+
+   SDL_mutex *cond_lock;
+   SDL_cond *cond;
 } rsd_t;
 
+static ssize_t audio_cb(void *data, size_t bytes, void *userdata)
+{
+   rsd_t *rsd = userdata;
+
+   size_t avail = rsnd_fifo_read_avail(rsd->buffer);
+   size_t write_size = bytes > avail ? avail : bytes;
+   rsnd_fifo_read(rsd->buffer, data, write_size);
+   SDL_CondSignal(rsd->cond);
+
+   return write_size;
+}
+
+static void err_cb(void *userdata)
+{
+   rsd_t *rsd = userdata;
+   rsd->has_error = true;
+   SDL_CondSignal(rsd->cond);
+}
+
 static void* __rsd_init(const char* device, int rate, int latency)
 {
    rsd_t *rsd = calloc(1, sizeof(rsd_t));
@@ -42,17 +68,25 @@ static void* __rsd_init(const char* device, int rate, int latency)
       return NULL;
    }
 
+   rsd->cond_lock = SDL_CreateMutex();
+   rsd->cond = SDL_CreateCond();
+
+   rsd->buffer = rsnd_fifo_new(1024 * 4);
+
    int channels = 2;
    int format = RSD_S16_NE;
 
    rsd_set_param(rd, RSD_CHANNELS, &channels);
    rsd_set_param(rd, RSD_SAMPLERATE, &rate);
+   rsd_set_param(rd, RSD_LATENCY, &latency);
 
    if ( device != NULL )
       rsd_set_param(rd, RSD_HOST, (void*)device);
 
    rsd_set_param(rd, RSD_FORMAT, &format);
 
+   rsd_set_callback(rd, audio_cb, err_cb, 256, rsd);
+
    if ( rsd_start(rd) < 0 )
    {
       free(rsd);
@@ -60,14 +94,7 @@ static void* __rsd_init(const char* device, int rate, int latency)
       return NULL;
    }
 
-   int min_latency = (rsd_delay_ms(rd) > latency) ? (rsd_delay_ms(rd) * 3 / 2) : latency;
-
-   rsd_set_param(rd, RSD_LATENCY, &min_latency);
-
    rsd->rd = rd;
-   rsd->latency = min_latency;
-   rsd->rate = rate;
-
    return rsd;
 }
 
@@ -75,26 +102,46 @@ static ssize_t __rsd_write(void* data, const void* buf, size_t size)
 {
    rsd_t *rsd = data;
 
-   if ( (rsd_delay_ms(rsd->rd) > rsd->latency || rsd_get_avail(rsd->rd) < size) && rsd->nonblock )
-      return 0;
-
-   if ( size == 0 )
-      return 0;
-
-   rsd_delay_wait(rsd->rd);
-   if ( rsd_write(rsd->rd, buf, size) == 0 )
+   if (rsd->has_error)
       return -1;
 
-   if ( rsd_delay_ms(rsd->rd) < rsd->latency/2 )
+   if (rsd->nonblock)
    {
-      int ms = rsd->latency/2;
-      size_t size = (ms * rsd->rate * 4) / 1000;
-      void *temp = calloc(1, size);
-      rsd_write(rsd->rd, temp, size);
-      free(temp);
+      rsd_callback_lock(rsd->rd);
+      size_t avail = rsnd_fifo_write_avail(rsd->buffer);
+      size_t write_amt = avail > size ? size : avail;
+      rsnd_fifo_write(rsd->buffer, buf, write_amt);
+      rsd_callback_unlock(rsd->rd);
+      return write_amt;
    }
+   else
+   {
+      size_t written = 0;
+      while (written < size && !rsd->has_error)
+      {
+         rsd_callback_lock(rsd->rd);
+         size_t avail = rsnd_fifo_write_avail(rsd->buffer);
 
-   return size;
+         if (avail == 0)
+         {
+            rsd_callback_unlock(rsd->rd);
+            if (!rsd->has_error)
+            {
+               SDL_mutexP(rsd->cond_lock);
+               SDL_CondWait(rsd->cond, rsd->cond_lock);
+               SDL_mutexV(rsd->cond_lock);
+            }
+         }
+         else
+         {
+            size_t write_amt = size - written > avail ? avail : size - written;
+            rsnd_fifo_write(rsd->buffer, (const char*)buf + written, write_amt);
+            rsd_callback_unlock(rsd->rd);
+            written += write_amt;
+         }
+      }
+      return written;
+   }
 }
 
 static bool __rsd_stop(void *data)
@@ -126,6 +173,11 @@ static void __rsd_free(void *data)
 
    rsd_stop(rsd->rd);
    rsd_free(rsd->rd);
+
+   rsnd_fifo_free(rsd->buffer);
+   SDL_DestroyMutex(rsd->cond_lock);
+   SDL_DestroyCond(rsd->cond);
+
    free(rsd);
 }
 
@@ -138,9 +190,4 @@ const audio_driver_t audio_rsound = {
    .free = __rsd_free,
    .ident = "rsound"
 };
-
-   
-
-
-   
    

config.def.h

@@ -31,15 +31,13 @@
 #endif
 
 #ifdef HAVE_SDL
-#include <SDL/SDL.h>
+#include "SDL.h"
 #else
 #error HAVE_SDL is not defined!
 #endif
 
 #ifdef HAVE_SRC
 #include <samplerate.h>
-#else
-#error HAVE_SRC is not defined!
 #endif
 
 
@@ -144,9 +142,22 @@ static const int out_latency = 64;
 static const bool audio_sync = true;
 
 // Defines the quality (and cpu reqirements) of samplerate conversion.
+#ifdef HAVE_SRC
 #define SAMPLERATE_QUALITY SRC_LINEAR
+#endif
 
+// Enables use of rewind. This will incur some memory footprint depending on the save state buffer.
+// This rewind only works when using bSNES core atm.
+static const bool rewind_enable = false;
 
+// The buffer size for the rewind buffer. This needs to be about 15-20MB per minute. Very game dependant.
+static const unsigned rewind_buffer_size = 20 << 20; // 20MiB
+
+// How many frames to rewind at a time.
+static const unsigned rewind_granularity = 1;
+
+// Pause gameplay when gameplay loses focus.
+static const bool pause_nonactive = true;
 
 
 ////////////////////
@@ -184,6 +195,9 @@ static const struct snes_keybind snes_keybinds_1[] = {
    { SSNES_STATE_SLOT_PLUS,            SDLK_F7,     NO_BTN,      AXIS_NONE },
    { SSNES_AUDIO_INPUT_RATE_PLUS,      SDLK_KP_PLUS, NO_BTN,     AXIS_NONE },
    { SSNES_AUDIO_INPUT_RATE_MINUS,     SDLK_KP_MINUS, NO_BTN,    AXIS_NONE },
+   { SSNES_REWIND,                     SDLK_r,      NO_BTN,      AXIS_NONE },
+   { SSNES_MOVIE_RECORD_TOGGLE,        SDLK_o,      NO_BTN,      AXIS_NONE },
+   { SSNES_PAUSE_TOGGLE,               SDLK_p,      NO_BTN,      AXIS_NONE },
    { -1 }
 };
 

docs/ssnes-joyconfig.1

@@ -34,6 +34,10 @@ Use config file found in PATH as a base. Old configuration values can be overwri
 \fB--output PATH, -o PATH\fR
 Writes the final config to a file, rather than \fBstdout\fR. If -i and -o point to the same file, the file found in PATH will simply be updated with the new configs.
 
+.TP
+\fB--misc, -m\fR
+Also configure some binds that aren't directly related to SNES emulation, such as save states, fullscreen toggling, etc.
+
 .TP
 \fB--help, -h\fR
 Prints help message.

docs/ssnes.1

@@ -100,6 +100,11 @@ Connects a four-way multitap into port 2 of the SNES. This allows for up to 5 pl
 \fB--record PATH, -r PATH\fR
 Activates video recording of gameplay into PATH. Video recording options can be configured in config file.
 
+.TP
+\fB--bsvplay PATH, -P PATH\fR
+Play back a movie recorded in the .bsv format (bSNES). Cart ROM and movie file need to correspond.
+It also requires to play back with the same libsnes backend that was used for recording.
+
 .TP
 \fB--verbose, -v\fR
 Activates verbose logging.

driver.c

@@ -166,10 +166,16 @@ void init_audio(void)
    else
       g_extern.audio_data.chunk_size = g_extern.audio_data.block_chunk_size;
 
+#ifdef HAVE_SRC
    int err;
-   g_extern.source = src_new(g_settings.audio.src_quality, 2, &err);
-   if (!g_extern.source)
+   g_extern.audio_data.source = src_new(g_settings.audio.src_quality, 2, &err);
+   if (!g_extern.audio_data.source)
       g_extern.audio_active = false;
+#else
+   g_extern.audio_data.source = hermite_new(2);
+   if (!g_extern.audio_data.source)
+      g_extern.audio_active = false;
+#endif
 
    size_t max_bufsamples = g_extern.audio_data.block_chunk_size > g_extern.audio_data.nonblock_chunk_size ?
       g_extern.audio_data.block_chunk_size : g_extern.audio_data.nonblock_chunk_size;
@@ -192,8 +198,14 @@ void uninit_audio(void)
    if ( driver.audio_data && driver.audio )
       driver.audio->free(driver.audio_data);
 
-   if ( g_extern.source )
-      src_delete(g_extern.source);
+   if ( g_extern.audio_data.source )
+   {
+#ifdef HAVE_SRC
+      src_delete(g_extern.audio_data.source);
+#else
+      hermite_free(g_extern.audio_data.source);
+#endif
+   }
 
    free(g_extern.audio_data.data); g_extern.audio_data.data = NULL;
    free(g_extern.audio_data.outsamples); g_extern.audio_data.outsamples = NULL;

driver.h

@@ -36,6 +36,9 @@ enum
    SSNES_STATE_SLOT_MINUS,
    SSNES_AUDIO_INPUT_RATE_PLUS,
    SSNES_AUDIO_INPUT_RATE_MINUS,
+   SSNES_REWIND,
+   SSNES_MOVIE_RECORD_TOGGLE,
+   SSNES_PAUSE_TOGGLE,
 };
 
 struct snes_keybind
@@ -69,15 +72,15 @@ typedef struct audio_driver
    const char *ident;
 } audio_driver_t;
 
-#define AXIS_NEG(x) ((uint32_t)(x << 16) | 0xFFFF)
+#define AXIS_NEG(x) (((uint32_t)(x) << 16) | 0xFFFFU)
 #define AXIS_POS(x) ((uint32_t)(x) | 0xFFFF0000U)
-#define AXIS_NONE ((uint32_t)0xFFFFFFFFU)
+#define AXIS_NONE (0xFFFFFFFFU)
 
-#define AXIS_NEG_GET(x) ((x >> 16) & 0xFFFF)
-#define AXIS_POS_GET(x) (x & 0xFFFF)
-#define AXIS_NONE ((uint32_t)0xFFFFFFFFU)
+#define AXIS_NEG_GET(x) (((uint32_t)(x) >> 16) & 0xFFFFU)
+#define AXIS_POS_GET(x) ((uint32_t)(x) & 0xFFFFU)
+#define AXIS_NONE (0xFFFFFFFFU)
 
-#define NO_BTN 0xFFFF // I hope no joypad will ever have this many buttons ... ;)
+#define NO_BTN ((uint16_t)0xFFFFU) // I hope no joypad will ever have this many buttons ... ;)
 
 #define HAT_UP_MASK (1 << 15)
 #define HAT_DOWN_MASK (1 << 14)
@@ -107,6 +110,7 @@ typedef struct video_driver
    void (*set_nonblock_state)(void* data, bool toggle); // Should we care about syncing to vblank? Fast forwarding.
    // Is the window still active?
    bool (*alive)(void *data);
+   bool (*focus)(void *data); // Does the window have focus?
    void (*free)(void* data);
    const char *ident;
 } video_driver_t;

file.c

@@ -22,6 +22,7 @@
 #include <libsnes.hpp>
 #include <string.h>
 #include "dynamic.h"
+#include "movie.h"
 
 #ifdef _WIN32
 #include <io.h>
@@ -103,6 +104,8 @@ static ssize_t read_rom_file(FILE* file, void** buf)
       *buf = rom_buf;
       ret = length;
    }
+
+   g_extern.cart_crc = crc32_calculate(*buf, ret);
    return ret;
 }
 

general.h

@@ -24,6 +24,8 @@
 #include <stdio.h>
 #include "record/ffemu.h"
 #include "message.h"
+#include "rewind.h"
+#include "movie.h"
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -31,11 +33,13 @@
 
 #ifdef HAVE_SRC
 #include <samplerate.h>
+#else
+#include "audio/hermite.h"
 #endif
 
 
 #define MAX_PLAYERS 5
-#define MAX_BINDS 22 // Needs to be increased every time there are new binds added.
+#define MAX_BINDS 25 // Needs to be increased every time there are new binds added.
 #define SSNES_NO_JOYPAD 0xFFFF
 struct settings
 {
@@ -84,6 +88,12 @@ struct settings
    } input;
 
    char libsnes[256];
+
+   bool rewind_enable;
+   unsigned rewind_buffer_size;
+   unsigned rewind_granularity;
+
+   bool pause_nonactive;
 };
 
 enum ssnes_game_type
@@ -98,7 +108,6 @@ enum ssnes_game_type
 struct global
 {
    bool verbose;
-   SRC_STATE *source;
    bool audio_active;
    bool video_active;
 
@@ -110,6 +119,7 @@ struct global
 
    FILE *rom_file;
    enum ssnes_game_type game_type;
+   uint32_t cart_crc;
 
    char gb_rom_path[256];
    char bsx_rom_path[256];
@@ -131,6 +141,12 @@ struct global
 
    struct
    {
+#ifdef HAVE_SRC
+      SRC_STATE *source;
+#else
+      hermite_resampler_t *source;
+#endif
+
       float *data;
       size_t data_ptr;
       size_t chunk_size;
@@ -145,6 +161,17 @@ struct global
 
    msg_queue_t *msg_queue;
 
+   state_manager_t *state_manager;
+   void *state_buf;
+   bool frame_is_reverse;
+
+   bsv_movie_t *bsv_movie;
+   char bsv_movie_path[256];
+   bool bsv_movie_end;
+   bool bsv_movie_playback;
+
+   bool is_paused;
+
 #ifdef HAVE_FFMPEG
    ffemu_t *rec;
    char record_path[256];

gfx/gl.c

@@ -29,18 +29,21 @@
 #include "config.h"
 #endif
 
+
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#include <OpenGL/glext.h>
+#else
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+#endif
+
 #define NO_SDL_GLEXT
 #include "SDL.h"
 #include "SDL_opengl.h"
 #include "input/ssnes_sdl_input.h"
 
-#define GL_GLEXT_PROTOTYPES
-#include <GL/glext.h>
-
-#ifndef _WIN32
-#include <GL/glx.h>
-#endif
-
 #ifdef HAVE_CG
 #include "shader_cg.h"
 #endif
@@ -234,7 +237,7 @@ static void gl_render_msg(gl_t *gl, const char *msg)
    // Need blending. 
    // Using fixed function pipeline here since we cannot guarantee presence of shaders (would be kinda overkill anyways).
    glEnable(GL_BLEND);
-   glBlendFunc(GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
    struct font_output_list out;
    font_renderer_msg(gl->font, msg, &out);
@@ -259,7 +262,7 @@ static void gl_render_msg(gl_t *gl, const char *msg)
       glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(head->pitch));
       glPixelStorei(GL_UNPACK_ROW_LENGTH, head->pitch);
       glTexImage2D(GL_TEXTURE_2D,
-            0, GL_RGBA, head->width, head->height, 0, GL_LUMINANCE,
+            0, GL_INTENSITY8, head->width, head->height, 0, GL_LUMINANCE,
             GL_UNSIGNED_BYTE, head->output);
 
       head = head->next;
@@ -398,7 +401,6 @@ static bool gl_frame(void *data, const uint16_t* frame, unsigned width, unsigned
       gl_render_msg(gl, msg);
 
    show_fps();
-   glFlush();
    SDL_GL_SwapBuffers();
 
    return true;
@@ -424,12 +426,12 @@ static void gl_set_nonblock_state(void *data, bool state)
       SSNES_LOG("GL VSync => %s\n", state ? "off" : "on");
 #ifdef _WIN32
       static BOOL (APIENTRY *wgl_swap_interval)(int) = NULL;
-      if (!wgl_swap_interval) wgl_swap_interval = (BOOL (APIENTRY*)(int)) wglGetProcAddress("wglSwapIntervalEXT");
+      if (!wgl_swap_interval) wgl_swap_interval = (BOOL (APIENTRY*)(int)) SDL_GL_GetProcAddress("wglSwapIntervalEXT");
       if (wgl_swap_interval) wgl_swap_interval(state ? 0 : 1);
 #else
       static int (*glx_swap_interval)(int) = NULL;
-      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalSGI");
-      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalMESA");
+      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))SDL_GL_GetProcAddress("glXSwapIntervalSGI");
+      if (!glx_swap_interval) glx_swap_interval = (int (*)(int))SDL_GL_GetProcAddress("glXSwapIntervalMESA");
       if (glx_swap_interval) glx_swap_interval(state ? 0 : 1);
 #endif
    }
@@ -485,7 +487,7 @@ static void* gl_init(video_info_t *video, const input_driver_t **input, void **i
    glEnable(GL_TEXTURE_2D);
    glDisable(GL_DITHER);
    glDisable(GL_DEPTH_TEST);
-   glColor3f(1, 1, 1);
+   glColor4f(1, 1, 1, 1);
    glClearColor(0, 0, 0, 0);
 
    SDL_WM_SetCaption("SSNES", NULL);
@@ -551,11 +553,18 @@ static bool gl_alive(void *data)
    return !gl->quitting;
 }
 
+static bool gl_focus(void *data)
+{
+   (void)data;
+   return (SDL_GetAppState() & (SDL_APPINPUTFOCUS | SDL_APPACTIVE)) == (SDL_APPINPUTFOCUS | SDL_APPACTIVE);
+}
+
 const video_driver_t video_gl = {
    .init = gl_init,
    .frame = gl_frame,
    .alive = gl_alive,
    .set_nonblock_state = gl_set_nonblock_state,
+   .focus = gl_focus,
    .free = gl_free,
    .ident = "gl"
 };

gfx/shader_glsl.c

@@ -23,17 +23,23 @@
 #include <string.h>
 #include "general.h"
 
-#define NO_SDL_GLEXT
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#include <OpenGL/glext.h>
+#else
+#define GL_GLEXT_PROTOTYPES
 #include <GL/gl.h>
+#include <GL/glext.h>
+#endif
+
+
+#define NO_SDL_GLEXT
 #include "SDL.h"
 #include "SDL_opengl.h"
 #include <stdlib.h>
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 
-#define GL_GLEXT_PROTOTYPES
-#include <GL/glext.h>
-
 #include "gl_common.h"
 
 static PFNGLCREATEPROGRAMPROC pglCreateProgram = NULL;

input/sdl.c

@@ -322,7 +322,7 @@ static void sdl_input_poll(void *data)
                *sdl->should_resize = true;
             }
             break;
-            
+
          default:
             break;
       }

movie.c

@@ -0,0 +1,248 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "movie.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "general.h"
+#include "dynamic.h"
+
+// CRC32 implementation taken from BSNES source :)
+
+static const uint32_t crc32_table[256] = {
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+    0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+    0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+    0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+    0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+    0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+    0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+    0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+    0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+    0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+    0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+    0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+    0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+    0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+    0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+    0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+    0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+    0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+
+static inline uint32_t crc32_adjust(uint32_t crc32, uint8_t input)
+{
+   return ((crc32 >> 8) & 0x00ffffff) ^ crc32_table[(crc32 ^ input) & 0xff];
+}
+
+uint32_t crc32_calculate(const uint8_t *data, unsigned length)
+{
+   uint32_t crc32 = ~0;
+   for(unsigned i = 0; i < length; i++)
+      crc32 = crc32_adjust(crc32, data[i]);
+   return ~crc32;
+}
+
+struct bsv_movie
+{
+   FILE *file;
+   uint8_t *state;
+};
+
+#define BSV_MAGIC 0x42535631
+
+#define MAGIC_INDEX 0
+#define SERIALIZER_INDEX 1
+#define CRC_INDEX 2
+#define STATE_SIZE_INDEX 3
+
+static inline uint8_t is_little_endian(void)
+{
+   union
+   {
+      uint16_t u16;
+      uint8_t u8[2];
+   } u;
+
+   u.u16 = 1;
+   return u.u8[0];
+}
+
+// Convert to big-endian if needed
+static inline uint32_t swap_if_big32(uint32_t val)
+{
+   if (is_little_endian()) // Little-endian
+      return val;
+   else
+      return (val >> 24) | ((val >> 8) & 0xFF00) | ((val << 8) & 0xFF0000) | (val << 24);
+}
+
+static inline uint16_t swap_if_big16(uint16_t val)
+{
+   if (is_little_endian())
+      return val;
+   else
+      return (val >> 8) | (val << 8);
+}
+
+static bool init_playback(bsv_movie_t *handle, const char *path)
+{
+   handle->file = fopen(path, "rb");
+   if (!handle->file)
+   {
+      SSNES_ERR("Couldn't open BSV file \"%s\" for playback.\n", path);
+      return false;
+   }
+
+   uint32_t header[4] = {0};
+   if (fread(header, sizeof(uint32_t), 4, handle->file) != 4)
+   {
+      SSNES_ERR("Couldn't read movie header!\n");
+      return false;
+   }
+
+   if (swap_if_big32(header[MAGIC_INDEX]) != BSV_MAGIC)
+   {
+      SSNES_ERR("Movie file is not a valid BSV1 file!\n");
+      return false;
+   }
+
+   if (swap_if_big32(header[CRC_INDEX]) != g_extern.cart_crc)
+   {
+      SSNES_ERR("Cart CRC32s differ! Cannot play back!\n");
+      return false;
+   }
+
+   uint32_t state_size = swap_if_big32(header[STATE_SIZE_INDEX]);
+   handle->state = malloc(state_size);
+   if (!handle->state)
+      return false;
+
+   if (fread(handle->state, 1, state_size, handle->file) != state_size)
+   {
+      SSNES_ERR("Couldn't read state from movie.\n");
+      return false;
+   }
+
+   if (psnes_serialize_size() != state_size)
+   {
+      SSNES_ERR("Movie format seems to have a different serializer version. Cannot continue.\n");
+      exit(1);
+   }
+   // Unserialize to start playback.
+   psnes_unserialize(handle->state, state_size);
+   return true;
+}
+
+static bool init_record(bsv_movie_t *handle, const char *path)
+{
+   handle->file = fopen(path, "wb");
+   if (!handle->file)
+   {
+      SSNES_ERR("Couldn't open BSV \"%s\" for recording.\n", path);
+      return false;
+   }
+
+   uint32_t header[4] = {0};
+   header[MAGIC_INDEX] = swap_if_big32(BSV_MAGIC);
+   //header[SERIALIZER_INDEX] = 0; // TODO: Fix this.
+   header[CRC_INDEX] = swap_if_big32(g_extern.cart_crc);
+
+   uint32_t state_size = psnes_serialize_size();
+   header[STATE_SIZE_INDEX] = swap_if_big32(state_size);
+   fwrite(header, 4, sizeof(uint32_t), handle->file);
+
+   handle->state = malloc(state_size);
+   if (!handle->state)
+      return false;
+
+   psnes_serialize(handle->state, state_size);
+   fwrite(handle->state, 1, state_size, handle->file);
+   return true;
+}
+
+void bsv_movie_free(bsv_movie_t *handle)
+{
+   if (handle)
+   {
+      if (handle->file)
+         fclose(handle->file);
+      free(handle->state);
+      free(handle);
+   }
+}
+
+bool bsv_movie_get_input(bsv_movie_t *handle, int16_t *input)
+{
+   if (fread(input, sizeof(int16_t), 1, handle->file) != 1)
+      return false;
+
+   *input = swap_if_big16(*input);
+   return true;
+}
+
+void bsv_movie_set_input(bsv_movie_t *handle, int16_t input)
+{
+   fwrite(&input, sizeof(int16_t), 1, handle->file);
+}
+
+bsv_movie_t *bsv_movie_init(const char *path, enum ssnes_movie_type type)
+{
+   bsv_movie_t *handle = calloc(1, sizeof(*handle));
+   if (!handle)
+      return NULL;
+
+   if (type == SSNES_MOVIE_PLAYBACK)
+   {
+      if (!init_playback(handle, path))
+         goto error;
+   }
+   else if (!init_record(handle, path))
+      goto error;
+
+   return handle;
+
+error:
+   bsv_movie_free(handle);
+   return NULL;
+}

movie.h

@@ -0,0 +1,48 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SSNES_MOVIE_H
+#define __SSNES_MOVIE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct bsv_movie bsv_movie_t;
+
+enum ssnes_movie_type
+{
+   SSNES_MOVIE_PLAYBACK,
+   SSNES_MOVIE_RECORD,
+};
+
+bsv_movie_t *bsv_movie_init(const char *path, enum ssnes_movie_type type);
+
+// Playback
+bool bsv_movie_get_input(bsv_movie_t *handle, int16_t *input);
+
+// Recording
+void bsv_movie_set_input(bsv_movie_t *handle, int16_t input);
+
+void bsv_movie_free(bsv_movie_t *handle);
+
+uint32_t crc32_calculate(const uint8_t *data, unsigned length);
+
+
+
+
+#endif
+

qb/config.libs.sh

@@ -17,8 +17,14 @@ fi
 
 check_lib ALSA -lasound snd_pcm_open
 check_header OSS sys/soundcard.h
-check_lib AL -lopenal alcOpenDevice
-check_lib RSOUND -lrsound rsd_init
+
+if [ "$OS" = "Darwin" ]; then
+   check_lib AL "-framework OpenAL" alcOpenDevice
+else
+   check_lib AL -lopenal alcOpenDevice
+fi
+
+check_pkgconf RSOUND rsound 1.1
 check_lib ROAR -lroar roar_vs_new
 check_lib JACK -ljack jack_client_open
 check_pkgconf PULSE libpulse
@@ -40,7 +46,6 @@ if [ $HAVE_FFMPEG != no ]; then
 fi
 
 check_pkgconf SRC samplerate
-check_critical SRC "Cannot find libsamplerate."
 
 check_lib DYNAMIC -ldl dlopen
 

qb/config.params.sh

@@ -1,7 +1,7 @@
 . qb/qb.params.sh
 
 PACKAGE_NAME=ssnes
-PACKAGE_VERSION=0.2.1
+PACKAGE_VERSION=0.2.2
 
 # Adds a command line opt to ./configure --help
 # $1: Variable (HAVE_ALSA, HAVE_OSS, etc)   
@@ -11,6 +11,7 @@ add_command_line_enable DYNAMIC "Enable dynamic loading of libsnes library." no
 add_command_line_string LIBSNES "libsnes library used" "-lsnes"
 add_command_line_enable FFMPEG "Enable FFmpeg recording support" no
 add_command_line_enable FILTER "Enable CPU filter support" no
+add_command_line_enable SRC "Enable libsamplerate support" no
 add_command_line_enable CONFIGFILE "Disable support for config file" yes
 add_command_line_enable CG "Enable Cg shader support" auto
 add_command_line_enable XML "Enable bSNES-style XML shader support" auto

qb/qb.comp.sh

@@ -6,7 +6,7 @@ TEMP_EXE=.tmp
 
 echo -n "Checking operating system ... "
 OS="Win32" # whatever ;D
-unamestr="`uname -o`"
+unamestr="`uname -a`"
 if [ ! -z "`echo $unamestr | grep -i Linux`" ]; then
    OS="Linux"
 elif [ ! -z "`echo $unamestr | grep -i Darwin`" ]; then
@@ -50,7 +50,7 @@ if [ "$USE_LANG_CXX" = "yes" ]; then
       CXX=`which g++ c++ 2> /dev/null | grep ^/ | head -n 1`
    fi
    if [ -z $CXX ]; then
-      echo "Could not find C compiler in path. Exiting ..."
+      echo "Could not find C++ compiler in path. Exiting ..."
       exit 1
    fi
 

qb/qb.params.sh

@@ -95,7 +95,7 @@ parse_input()
       case "$1" in
 
          --prefix=*)
-            prefix="`echo $1 | sed -e 's|^--prefix=\(\S\S*\)$|\1|' -e 's|\(\S\S*\)/$|\1|'`"
+            prefix="`echo $1 | sed -e 's|^--prefix=||' -e 's|^\(.*\)/$|\1|'`"
 
             if [ "$prefix" != "$1" ]; then
                PREFIX="$prefix"

rewind.c

@@ -0,0 +1,162 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rewind.h"
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <assert.h>
+
+//#include <stdio.h>
+
+struct state_manager
+{
+   uint64_t *buffer;
+   size_t buf_size;
+   uint32_t *tmp_state;
+   uint32_t *scratch_buf;
+   size_t top_ptr;
+   size_t bottom_ptr;
+   size_t state_size;
+};
+
+state_manager_t *state_manager_new(size_t state_size, size_t buffer_size, void *init_buffer)
+{
+   if (buffer_size <= state_size * 2 + 1) // Need a sufficient buffer size.
+      return NULL;
+
+   state_manager_t *state = calloc(1, sizeof(*state));
+   if (!state)
+      return NULL;
+
+   assert(state_size % 4 == 0); // We need 4-byte aligned state_size to avoid having to enforce this with unneeded memcpy's!
+   state->top_ptr = 1;
+   state->state_size = (state_size + 3) >> 2; // Multiple of 4.
+   state->buf_size = (buffer_size + 7) >> 3; // Multiple of 8.
+   if (!(state->buffer = calloc(1, state->buf_size * sizeof(uint64_t))))
+      goto error;
+   if (!(state->tmp_state = calloc(1, state->state_size * sizeof(uint32_t))))
+      goto error;
+
+   memcpy(state->tmp_state, init_buffer, state_size);
+
+   return state;
+
+error:
+   if (state)
+   {
+      free(state->buffer);
+      free(state->tmp_state);
+      free(state);
+   }
+   return NULL;
+}
+
+void state_manager_free(state_manager_t *state)
+{
+   free(state->buffer);
+   free(state->tmp_state);
+   free(state);
+}
+
+bool state_manager_pop(state_manager_t *state, void **data)
+{ 
+   *data = state->tmp_state;
+
+   if (state->top_ptr == 0)
+      state->top_ptr = state->buf_size - 1;
+   else
+      state->top_ptr--;
+
+   if (state->top_ptr == state->bottom_ptr) // Our stack is completely empty... :v
+   {
+      state->top_ptr = (state->top_ptr + 1) % state->buf_size;
+      return false;
+   }
+
+   while (state->buffer[state->top_ptr])
+   {
+      // Apply the xor patch.
+      uint32_t addr = state->buffer[state->top_ptr] >> 32;
+      uint32_t xor = state->buffer[state->top_ptr] & 0xFFFFFFFFU;
+      state->tmp_state[addr] ^= xor;
+
+      if (state->top_ptr == 0)
+         state->top_ptr = state->buf_size - 1;
+      else
+         state->top_ptr--;
+   }
+
+   if (state->top_ptr == state->bottom_ptr) // Our stack is completely empty... :v
+   {
+      state->top_ptr = (state->top_ptr + 1) % state->buf_size;
+      return true;
+   }
+
+   return true;
+}
+
+static void reassign_bottom(state_manager_t *state)
+{
+   state->bottom_ptr = (state->top_ptr + 1) % state->buf_size;
+   while (state->buffer[state->bottom_ptr]) // Skip ahead until we find the first 0 (boundary for state delta).
+      state->bottom_ptr = (state->bottom_ptr + 1) % state->buf_size;
+}
+
+static void generate_delta(state_manager_t *state, const void *data)
+{
+   //unsigned patch_size = 0;
+   bool crossed = false;
+   const uint32_t *old_state = state->tmp_state;
+   const uint32_t *new_state = data;
+
+   state->buffer[state->top_ptr++] = 0; // For each separate delta, we have a 0 value sentinel in between.
+   if (state->top_ptr == state->bottom_ptr) // Check if top_ptr and bottom_ptr crossed eachother, which means we need to delete old cruft.
+      crossed = true;
+
+   for (uint64_t i = 0; i < state->state_size; i++)
+   {
+      uint64_t xor = old_state[i] ^ new_state[i];
+
+      // If the data differs (xor != 0), we push that xor on the stack with index and xor. This can be reversed by reapplying the xor.
+      // This, if states don't really differ much, we'll save lots of space :) Hopefully this will work really well with save states.
+      if (xor)
+      {
+         //patch_size++;
+         state->buffer[state->top_ptr] = (i << 32) | xor;
+         state->top_ptr = (state->top_ptr + 1) % state->buf_size;
+
+         if (state->top_ptr == state->bottom_ptr)
+            crossed = true;
+      }
+   }
+
+   if (crossed)
+      reassign_bottom(state);
+
+   //fprintf(stderr, "DELTA SIZE: %u, ORIG SIZE: %u\n", (unsigned)patch_size << 3, (unsigned)state->state_size << 2);
+}
+
+bool state_manager_push(state_manager_t *state, const void *data)
+{
+   generate_delta(state, data);
+   memcpy(state->tmp_state, data, state->state_size * sizeof(uint32_t));
+
+   return true;
+}
+

rewind.h

@@ -0,0 +1,33 @@
+/*  SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
+ *  Copyright (C) 2010-2011 - Hans-Kristian Arntzen
+ *
+ *  Some code herein may be based on code found in BSNES.
+ * 
+ *  SSNES is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with SSNES.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SSNES_REWIND_H
+#define __SSNES_REWIND_H
+
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef struct state_manager state_manager_t;
+
+// Always pass in at least 4-byte aligned data and sizes!
+
+state_manager_t *state_manager_new(size_t state_size, size_t buffer_size, void *init_buffer);
+void state_manager_free(state_manager_t *state);
+bool state_manager_pop(state_manager_t *state, void **data);
+bool state_manager_push(state_manager_t *state, const void *data);
+
+#endif

settings.c

@@ -122,7 +122,15 @@ static void set_defaults(void)
       strncpy(g_settings.audio.device, audio_device, sizeof(g_settings.audio.device));
    g_settings.audio.latency = out_latency;
    g_settings.audio.sync = audio_sync;
+
+#ifdef HAVE_SRC
    g_settings.audio.src_quality = SAMPLERATE_QUALITY;
+#endif
+
+   g_settings.rewind_enable = rewind_enable;
+   g_settings.rewind_buffer_size = rewind_buffer_size;
+   g_settings.rewind_granularity = rewind_granularity;
+   g_settings.pause_nonactive = pause_nonactive;
 
    assert(sizeof(g_settings.input.binds[0]) >= sizeof(snes_keybinds_1));
    assert(sizeof(g_settings.input.binds[1]) >= sizeof(snes_keybinds_2));
@@ -154,6 +162,24 @@ void parse_config(void)
 #endif
 }
 
+// Macros to ease config getting.
+#define CONFIG_GET_BOOL(var, key) if (config_get_bool(conf, key, &tmp_bool)) \
+   g_settings.var = tmp_bool
+
+#define CONFIG_GET_INT(var, key) if (config_get_int(conf, key, &tmp_int)) \
+   g_settings.var = tmp_int
+
+#define CONFIG_GET_DOUBLE(var, key) if (config_get_double(conf, key, &tmp_double)) \
+   g_settings.var = tmp_double
+
+#define CONFIG_GET_STRING(var, key) do { \
+   if (config_get_string(conf, key, &tmp_str)) \
+   { \
+      strncpy(g_settings.var, tmp_str, sizeof(g_settings.var) - 1); \
+      free(tmp_str); \
+   } \
+} while(0)
+
 #ifdef HAVE_CONFIGFILE
 static void parse_config_file(void)
 {
@@ -175,6 +201,9 @@ static void parse_config_file(void)
       conf = config_file_new("ssnes.cfg");
 #else
       const char *xdg = getenv("XDG_CONFIG_HOME");
+      if (!xdg)
+         SSNES_WARN("XDG_CONFIG_HOME is not defined. Will look for config in $HOME/.ssnesrc ...\n");
+
       const char *home = getenv("HOME");
       if (xdg)
       {
@@ -207,63 +236,26 @@ static void parse_config_file(void)
    bool tmp_bool;
    char *tmp_str;
 
-   // Video settings.
-   if (config_get_double(conf, "video_xscale", &tmp_double))
-      g_settings.video.xscale = tmp_double;
+   CONFIG_GET_DOUBLE(video.xscale, "video_xscale");
+   CONFIG_GET_DOUBLE(video.yscale, "video_yscale");
+   CONFIG_GET_INT(video.fullscreen_x, "video_fullscreen_x");
+   CONFIG_GET_INT(video.fullscreen_y, "video_fullscreen_y");
+   CONFIG_GET_BOOL(video.fullscreen, "video_fullscreen");
+   CONFIG_GET_BOOL(video.vsync, "video_vsync");
+   CONFIG_GET_BOOL(video.smooth, "video_smooth");
+   CONFIG_GET_BOOL(video.force_aspect, "video_force_aspect");
+   CONFIG_GET_DOUBLE(video.aspect_ratio, "video_aspect_ratio");
 
-   if (config_get_double(conf, "video_yscale", &tmp_double))
-      g_settings.video.yscale = tmp_double;
-
-   if (config_get_int(conf, "video_fullscreen_x", &tmp_int))
-      g_settings.video.fullscreen_x = tmp_int;
-
-   if (config_get_int(conf, "video_fullscreen_y", &tmp_int))
-      g_settings.video.fullscreen_y = tmp_int;
-
-   if (config_get_bool(conf, "video_fullscreen", &tmp_bool))
-      g_settings.video.fullscreen = tmp_bool;
-
-   if (config_get_bool(conf, "video_vsync", &tmp_bool))
-      g_settings.video.vsync = tmp_bool;
-
-   if (config_get_bool(conf, "video_smooth", &tmp_bool))
-      g_settings.video.smooth = tmp_bool;
-
-   if (config_get_bool(conf, "video_force_aspect", &tmp_bool))
-      g_settings.video.force_aspect = tmp_bool;
-
-   if (config_get_double(conf, "video_aspect_ratio", &tmp_double))
-      g_settings.video.aspect_ratio = tmp_double;
-
-   if (config_get_string(conf, "video_cg_shader", &tmp_str))
-   {
-      strncpy(g_settings.video.cg_shader_path, tmp_str, sizeof(g_settings.video.cg_shader_path) - 1);
-      free(tmp_str);
-   }
-
-   if (config_get_string(conf, "video_bsnes_shader", &tmp_str))
-   {
-      strncpy(g_settings.video.bsnes_shader_path, tmp_str, sizeof(g_settings.video.bsnes_shader_path) - 1);
-      free(tmp_str);
-   }
+   CONFIG_GET_STRING(video.cg_shader_path, "video_cg_shader");
+   CONFIG_GET_STRING(video.bsnes_shader_path, "video_bsnes_shader");
 
 #ifdef HAVE_FREETYPE
-   if (config_get_string(conf, "video_font_path", &tmp_str))
-   {
-      strncpy(g_settings.video.font_path, tmp_str, sizeof(g_settings.video.font_path) - 1);
-      free(tmp_str);
-   }
-
-   if (config_get_int(conf, "video_font_size", &tmp_int))
-      g_settings.video.font_size = tmp_int;
-
-   if (config_get_double(conf, "video_message_pos_x", &tmp_double))
-      g_settings.video.msg_pos_x = tmp_double;
-   if (config_get_double(conf, "video_message_pos_y", &tmp_double))
-      g_settings.video.msg_pos_y = tmp_double;
+   CONFIG_GET_STRING(video.font_path, "video_font_path");
+   CONFIG_GET_INT(video.font_size, "video_font_size");
+   CONFIG_GET_DOUBLE(video.msg_pos_x, "video_message_pos_x");
+   CONFIG_GET_DOUBLE(video.msg_pos_y, "video_message_pos_y");
 #endif
 
-
 #ifdef HAVE_FILTER
    if (config_get_string(conf, "video_filter", &tmp_str))
    {
@@ -297,51 +289,24 @@ static void parse_config_file(void)
    }
 #endif
 
-   // Input Settings.
-   if (config_get_double(conf, "input_axis_threshold", &tmp_double))
-      g_settings.input.axis_threshold = tmp_double;
-
-   // Joypad mapping.
-   if (config_get_int(conf, "input_player1_joypad_index", &tmp_int))
-      g_settings.input.joypad_map[0] = tmp_int;
-
-   if (config_get_int(conf, "input_player2_joypad_index", &tmp_int))
-      g_settings.input.joypad_map[1] = tmp_int;
-
-   if (config_get_int(conf, "input_player3_joypad_index", &tmp_int))
-      g_settings.input.joypad_map[2] = tmp_int;
-
-   if (config_get_int(conf, "input_player4_joypad_index", &tmp_int))
-      g_settings.input.joypad_map[3] = tmp_int;
-
-   if (config_get_int(conf, "input_player5_joypad_index", &tmp_int))
-      g_settings.input.joypad_map[4] = tmp_int;
+   CONFIG_GET_DOUBLE(input.axis_threshold, "input_axis_threshold");
+   CONFIG_GET_INT(input.joypad_map[0], "input_player1_joypad_index");
+   CONFIG_GET_INT(input.joypad_map[1], "input_player2_joypad_index");
+   CONFIG_GET_INT(input.joypad_map[2], "input_player3_joypad_index");
+   CONFIG_GET_INT(input.joypad_map[3], "input_player4_joypad_index");
+   CONFIG_GET_INT(input.joypad_map[4], "input_player5_joypad_index");
 
    // Audio settings.
-   if (config_get_bool(conf, "audio_enable", &tmp_bool))
-      g_settings.audio.enable = tmp_bool;
-
-   if (config_get_int(conf, "audio_out_rate", &tmp_int))
-      g_settings.audio.out_rate = tmp_int;
-
-   if (config_get_double(conf, "audio_in_rate", &tmp_double))
-      g_settings.audio.in_rate = tmp_double;
-
-   if (config_get_double(conf, "audio_rate_step", &tmp_double))
-      g_settings.audio.rate_step = tmp_double;
-
-   if (config_get_string(conf, "audio_device", &tmp_str))
-   {
-      strncpy(g_settings.audio.device, tmp_str, sizeof(g_settings.audio.device) - 1);
-      free(tmp_str);
-   }
-
-   if (config_get_int(conf, "audio_latency", &tmp_int))
-      g_settings.audio.latency = tmp_int;
-
-   if (config_get_bool(conf, "audio_sync", &tmp_bool))
-      g_settings.audio.sync = tmp_bool;
+   
+   CONFIG_GET_BOOL(audio.enable, "audio_enable");
+   CONFIG_GET_INT(audio.out_rate, "audio_out_rate");
+   CONFIG_GET_DOUBLE(audio.in_rate, "audio_in_rate");
+   CONFIG_GET_DOUBLE(audio.rate_step, "audio_rate_step");
+   CONFIG_GET_STRING(audio.device, "audio_device");
+   CONFIG_GET_INT(audio.latency, "audio_latency");
+   CONFIG_GET_BOOL(audio.sync, "audio_sync");
 
+#ifdef HAVE_SRC
    if (config_get_int(conf, "audio_src_quality", &tmp_int))
    {
       int quals[] = { SRC_ZERO_ORDER_HOLD, SRC_LINEAR, SRC_SINC_FASTEST, 
@@ -350,27 +315,21 @@ static void parse_config_file(void)
       if (tmp_int > 0 && tmp_int < 6)
          g_settings.audio.src_quality = quals[tmp_int];
    }
+#endif
 
-   if (config_get_string(conf, "video_driver", &tmp_str))
-   {
-      strncpy(g_settings.video.driver, tmp_str, sizeof(g_settings.video.driver) - 1);
-      free(tmp_str);
-   }
-   if (config_get_string(conf, "audio_driver", &tmp_str))
-   {
-      strncpy(g_settings.audio.driver, tmp_str, sizeof(g_settings.audio.driver) - 1);
-      free(tmp_str);
-   }
-   if (config_get_string(conf, "input_driver", &tmp_str))
-   {
-      strncpy(g_settings.input.driver, tmp_str, sizeof(g_settings.input.driver) - 1);
-      free(tmp_str);
-   }
-   if (config_get_string(conf, "libsnes_path", &tmp_str))
-   {
-      strncpy(g_settings.libsnes, tmp_str, sizeof(g_settings.libsnes) - 1);
-      free(tmp_str);
-   }
+   CONFIG_GET_STRING(video.driver, "video_driver");
+   CONFIG_GET_STRING(audio.driver, "audio_driver");
+   CONFIG_GET_STRING(input.driver, "input_driver");
+   CONFIG_GET_STRING(libsnes, "libsnes_path");
+
+   CONFIG_GET_BOOL(rewind_enable, "rewind_enable");
+
+   if (config_get_int(conf, "rewind_buffer_size", &tmp_int))
+      g_settings.rewind_buffer_size = tmp_int * 1000000;
+
+   CONFIG_GET_INT(rewind_granularity, "rewind_granularity");
+
+   CONFIG_GET_BOOL(pause_nonactive, "pause_nonactive");
 
    read_keybinds(conf);
 
@@ -411,6 +370,8 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(toggle_fullscreen,     SSNES_FULLSCREEN_TOGGLE_KEY)
       DECLARE_BIND(rate_step_up,          SSNES_AUDIO_INPUT_RATE_PLUS)
       DECLARE_BIND(rate_step_down,        SSNES_AUDIO_INPUT_RATE_MINUS)
+      DECLARE_BIND(rewind,                SSNES_REWIND)
+      DECLARE_BIND(movie_record_toggle,   SSNES_MOVIE_RECORD_TOGGLE)
    },
    {
       DECLARE_BIND(player2_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -434,6 +395,8 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(toggle_fullscreen,     SSNES_FULLSCREEN_TOGGLE_KEY)
       DECLARE_BIND(rate_step_up,          SSNES_AUDIO_INPUT_RATE_PLUS)
       DECLARE_BIND(rate_step_down,        SSNES_AUDIO_INPUT_RATE_MINUS)
+      DECLARE_BIND(rewind,                SSNES_REWIND)
+      DECLARE_BIND(movie_record_toggle,   SSNES_MOVIE_RECORD_TOGGLE)
    },
    {
       DECLARE_BIND(player3_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -457,6 +420,8 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(toggle_fullscreen,     SSNES_FULLSCREEN_TOGGLE_KEY)
       DECLARE_BIND(rate_step_up,          SSNES_AUDIO_INPUT_RATE_PLUS)
       DECLARE_BIND(rate_step_down,        SSNES_AUDIO_INPUT_RATE_MINUS)
+      DECLARE_BIND(rewind,                SSNES_REWIND)
+      DECLARE_BIND(movie_record_toggle,   SSNES_MOVIE_RECORD_TOGGLE)
    },
    {
       DECLARE_BIND(player4_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -480,6 +445,8 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(toggle_fullscreen,     SSNES_FULLSCREEN_TOGGLE_KEY)
       DECLARE_BIND(rate_step_up,          SSNES_AUDIO_INPUT_RATE_PLUS)
       DECLARE_BIND(rate_step_down,        SSNES_AUDIO_INPUT_RATE_MINUS)
+      DECLARE_BIND(rewind,                SSNES_REWIND)
+      DECLARE_BIND(movie_record_toggle,   SSNES_MOVIE_RECORD_TOGGLE)
    },
    {
       DECLARE_BIND(player5_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -503,6 +470,8 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(toggle_fullscreen,     SSNES_FULLSCREEN_TOGGLE_KEY)
       DECLARE_BIND(rate_step_up,          SSNES_AUDIO_INPUT_RATE_PLUS)
       DECLARE_BIND(rate_step_down,        SSNES_AUDIO_INPUT_RATE_MINUS)
+      DECLARE_BIND(rewind,                SSNES_REWIND)
+      DECLARE_BIND(movie_record_toggle,   SSNES_MOVIE_RECORD_TOGGLE)
    },
 };
 

ssnes.c

@@ -22,17 +22,33 @@
 #include <stdlib.h>
 #include <string.h>
 #include <getopt.h>
+#include <time.h>
 #include "driver.h"
 #include "file.h"
 #include "hqflt/filters.h"
 #include "general.h"
 #include "dynamic.h"
 #include "record/ffemu.h"
+#include "rewind.h"
+#include "movie.h"
 #include <assert.h>
 #ifdef HAVE_SRC
 #include <samplerate.h>
 #endif
 
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+
+#ifdef __APPLE__
+#include "SDL.h" 
+// OSX seems to really need -lSDLmain, 
+// so we include SDL.h here so it can hack our main.
+// I had issues including this in Win32 for some reason. :)
+#endif
+
 struct global g_extern = {
    .video_active = true,
    .audio_active = true,
@@ -64,10 +80,10 @@ static void set_fast_forward_button(bool new_button_state)
 static inline void process_frame (uint16_t * restrict out, const uint16_t * restrict in, unsigned width, unsigned height)
 {
    int pitch = 1024;
-   if ( height == 448 || height == 478 )
+   if (height == 448 || height == 478)
       pitch = 512;
 
-   for ( int y = 0; y < height; y++ )
+   for (int y = 0; y < height; y++)
    {
       const uint16_t *src = in + y * pitch;
       uint16_t *dst = out + y * width;
@@ -163,22 +179,33 @@ static void audio_sample(uint16_t left, uint16_t right)
    }
 #endif
 
-   g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(*(int16_t*)&left)/0x8000; 
-   g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(*(int16_t*)&right)/0x8000;
+   g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(int16_t)left/0x8000; 
+   g_extern.audio_data.data[g_extern.audio_data.data_ptr++] = (float)(int16_t)right/0x8000;
 
    if (g_extern.audio_data.data_ptr >= g_extern.audio_data.chunk_size)
    {
-      SRC_DATA src_data;
 
-      src_data.data_in = g_extern.audio_data.data;
-      src_data.data_out = g_extern.audio_data.outsamples;
-      src_data.input_frames = g_extern.audio_data.chunk_size / 2;
-      src_data.output_frames = g_extern.audio_data.chunk_size * 8;
-      src_data.end_of_input = 0;
-      src_data.src_ratio = (double)g_settings.audio.out_rate / (double)g_settings.audio.in_rate;
+      if (g_extern.frame_is_reverse) // Disable fucked up audio when rewinding...
+         memset(g_extern.audio_data.data, 0, g_extern.audio_data.chunk_size * sizeof(float));
 
-      src_process(g_extern.source, &src_data);
+#ifdef HAVE_SRC
+      SRC_DATA src_data = {
+#else
+      struct hermite_data src_data = {
+#endif
+         .data_in = g_extern.audio_data.data,
+         .data_out = g_extern.audio_data.outsamples,
+         .input_frames = g_extern.audio_data.chunk_size / 2,
+         .output_frames = g_extern.audio_data.chunk_size * 8,
+         .end_of_input = 0,
+         .src_ratio = (double)g_settings.audio.out_rate / (double)g_settings.audio.in_rate,
+      };
 
+#ifdef HAVE_SRC
+      src_process(g_extern.audio_data.source, &src_data);
+#else
+      hermite_process(g_extern.audio_data.source, &src_data);
+#endif
       if (g_extern.audio_data.use_float)
       {
          if (driver.audio->write(driver.audio_data, g_extern.audio_data.outsamples, src_data.output_frames_gen * sizeof(float) * 2) < 0)
@@ -189,7 +216,11 @@ static void audio_sample(uint16_t left, uint16_t right)
       }
       else
       {
-         src_float_to_short_array(g_extern.audio_data.outsamples, g_extern.audio_data.conv_outsamples, src_data.output_frames_gen * 2);
+         for (unsigned i = 0; i < src_data.output_frames_gen * 2; i++)
+         {
+            int32_t val = g_extern.audio_data.outsamples[i] * 0x8000;
+            g_extern.audio_data.conv_outsamples[i] = (val > 0x7FFF) ? 0x7FFF : (val < -0x8000 ? -0x8000 : (int16_t)val);
+         }
 
          if (driver.audio->write(driver.audio_data, g_extern.audio_data.conv_outsamples, src_data.output_frames_gen * sizeof(int16_t) * 2) < 0)
          {
@@ -209,11 +240,27 @@ static void input_poll(void)
 
 static int16_t input_state(bool port, unsigned device, unsigned index, unsigned id)
 {
+   if (g_extern.bsv_movie && g_extern.bsv_movie_playback)
+   {
+      int16_t ret;
+      if (bsv_movie_get_input(g_extern.bsv_movie, &ret))
+         return ret;
+      else
+      {
+         g_extern.bsv_movie_end = true;
+         return 0;
+      }
+   }
+
    const struct snes_keybind *binds[MAX_PLAYERS];
    for (int i = 0; i < MAX_PLAYERS; i++)
       binds[i] = g_settings.input.binds[i];
 
-   return driver.input->input_state(driver.input_data, binds, port, device, index, id);
+   int16_t res = driver.input->input_state(driver.input_data, binds, port, device, index, id);
+   if (g_extern.bsv_movie && !g_extern.bsv_movie_playback)
+      bsv_movie_set_input(g_extern.bsv_movie, res);
+
+   return res;
 }
 
 static void fill_pathname(char *out_path, char *in_path, const char *replace)
@@ -241,7 +288,7 @@ static void fill_pathname(char *out_path, char *in_path, const char *replace)
 #endif
 
 #ifdef _WIN32
-#define PACKAGE_VERSION "0.2.1"
+#define PACKAGE_VERSION "0.2.2"
 #endif
 
 #include "config.features.h"
@@ -294,6 +341,7 @@ static void print_help(void)
    puts("\t-j/--justifier: Connect a virtual Konami Justifier into port 2 of the SNES.");
    puts("\t-J/--justifiers: Daisy chain two virtual Konami Justifiers into port 2 of the SNES.");
    puts("\t-4/--multitap: Connect a multitap to port 2 of the SNES.");
+   puts("\t-P/--bsvplay: Playback a BSV movie file.");
 
 #ifdef HAVE_FFMPEG
    puts("\t-r/--record: Path to record video file. Settings for video/audio codecs are found in config file.");
@@ -332,6 +380,7 @@ static void parse_input(int argc, char *argv[])
       { "multitap", 0, NULL, '4' },
       { "sufamiA", 1, NULL, 'Y' },
       { "sufamiB", 1, NULL, 'Z' },
+      { "bsvplay", 1, NULL, 'P' },
       { NULL, 0, NULL, 0 }
    };
 
@@ -349,7 +398,7 @@ static void parse_input(int argc, char *argv[])
 #define CONFIG_FILE_ARG
 #endif
 
-   char optstring[] = "hs:vS:m:p4jJg:b:B:Y:Z:" FFMPEG_RECORD_ARG CONFIG_FILE_ARG;
+   char optstring[] = "hs:vS:m:p4jJg:b:B:Y:Z:P:" FFMPEG_RECORD_ARG CONFIG_FILE_ARG;
    for(;;)
    {
       int c = getopt_long(argc, argv, optstring, opts, &option_index);
@@ -441,6 +490,11 @@ static void parse_input(int argc, char *argv[])
             break;
 #endif
 
+         case 'P':
+            strncpy(g_extern.bsv_movie_path, optarg, sizeof(g_extern.bsv_movie_path) - 1);
+            g_extern.bsv_movie_playback = true;
+            break;
+
          case '?':
             print_help();
             exit(1);
@@ -590,8 +644,8 @@ static void init_recording(void)
    // Hardcode these options at the moment. Should be specificed in the config file later on.
    if (g_extern.recording)
    {
-      struct ffemu_rational ntsc_fps = {60000, 1001};
-      struct ffemu_rational pal_fps = {50000, 1001};
+      struct ffemu_rational ntsc_fps = {60000, 1000};
+      struct ffemu_rational pal_fps = {50000, 1000};
       struct ffemu_params params = {
          .vcodec = FFEMU_VIDEO_H264,
          .acodec = FFEMU_AUDIO_VORBIS,
@@ -599,7 +653,7 @@ static void init_recording(void)
          .out_width = 512,
          .out_height = 448,
          .channels = 2,
-         .samplerate = 32040,
+         .samplerate = 32000,
          .filename = g_extern.record_path,
          .fps = psnes_get_region() == SNES_REGION_NTSC ? ntsc_fps : pal_fps,
          .aspect_ratio = 4.0/3
@@ -636,8 +690,55 @@ static void deinit_msg_queue(void)
       msg_queue_free(g_extern.msg_queue);
 }
 
+static void init_rewind(void)
+{
+   if (g_settings.rewind_enable)
+   {
+      size_t serial_size = psnes_serialize_size();
+      g_extern.state_buf = malloc((serial_size + 3) & ~3); // Make sure we allocate at least 4-byte multiple.
+      psnes_serialize(g_extern.state_buf, serial_size);
+      SSNES_LOG("Initing rewind buffer with size: %u MB\n", (unsigned)g_settings.rewind_buffer_size / 1000000);
+      g_extern.state_manager = state_manager_new((serial_size + 3) & ~3, g_settings.rewind_buffer_size, g_extern.state_buf);
+      if (!g_extern.state_manager)
+         SSNES_WARN("Failed to init rewind buffer. Rewinding will be disabled!\n");
+   }
+}
+
+static void deinit_rewind(void)
+{
+   if (g_extern.state_manager)
+      state_manager_free(g_extern.state_manager);
+   if (g_extern.state_buf)
+      free(g_extern.state_buf);
+}
+
+static void init_movie(void)
+{
+   if (g_extern.bsv_movie_playback)
+   {
+      g_extern.bsv_movie = bsv_movie_init(g_extern.bsv_movie_path, SSNES_MOVIE_PLAYBACK);
+      if (!g_extern.bsv_movie)
+      {
+         SSNES_ERR("Failed to load movie file: \"%s\"!\n", g_extern.bsv_movie_path);
+         exit(1);
+      }
+
+      msg_queue_push(g_extern.msg_queue, "Starting movie playback!", 2, 180);
+      SSNES_LOG("Starting movie playback!\n");
+   }
+}
+
+static void deinit_movie(void)
+{
+   if (g_extern.bsv_movie)
+      bsv_movie_free(g_extern.bsv_movie);
+}
+
 static void fill_pathnames(void)
 {
+   if (!g_extern.bsv_movie_playback)
+      fill_pathname(g_extern.bsv_movie_path, g_extern.savefile_name_srm, "");
+
    switch (g_extern.game_type)
    {
       case SSNES_CART_BSX:
@@ -667,7 +768,12 @@ static void check_savestates(void)
    if (should_savestate && !old_should_savestate)
    {
       char save_path[strlen(g_extern.savestate_name) * 2];
-      snprintf(save_path, sizeof(save_path), g_extern.state_slot > 0 ? "%s%u" : "%s", g_extern.savestate_name, g_extern.state_slot);
+
+      if (g_extern.state_slot > 0)
+         snprintf(save_path, sizeof(save_path), "%s%u", g_extern.savestate_name, g_extern.state_slot);
+      else
+         snprintf(save_path, sizeof(save_path), "%s", g_extern.savestate_name);
+
       if(!save_state(save_path))
       {
          msg_queue_clear(g_extern.msg_queue);
@@ -688,7 +794,11 @@ static void check_savestates(void)
    if (!should_savestate && should_loadstate && !old_should_loadstate)
    {
       char load_path[strlen(g_extern.savestate_name) * 2];
-      snprintf(load_path, sizeof(load_path), g_extern.state_slot ? "%s%u" : "%s", g_extern.savestate_name, g_extern.state_slot);
+
+      if (g_extern.state_slot > 0)
+         snprintf(load_path, sizeof(load_path), "%s%u", g_extern.savestate_name, g_extern.state_slot);
+      else
+         snprintf(load_path, sizeof(load_path), "%s", g_extern.savestate_name);
 
       if(!load_state(load_path))
       {
@@ -727,7 +837,7 @@ static void check_stateslots(void)
       g_extern.state_slot++;
       msg_queue_clear(g_extern.msg_queue);
       char msg[256];
-      snprintf(msg, sizeof(msg), "Save state slot: %u", g_extern.state_slot);
+      snprintf(msg, sizeof(msg), "Save state/movie slot: %u", g_extern.state_slot);
       msg_queue_push(g_extern.msg_queue, msg, 1, 180);
       SSNES_LOG("%s\n", msg);
    }
@@ -741,7 +851,7 @@ static void check_stateslots(void)
          g_extern.state_slot--;
       msg_queue_clear(g_extern.msg_queue);
       char msg[256];
-      snprintf(msg, sizeof(msg), "Save state slot: %u", g_extern.state_slot);
+      snprintf(msg, sizeof(msg), "Save state/movie slot: %u", g_extern.state_slot);
       msg_queue_push(g_extern.msg_queue, msg, 1, 180);
       SSNES_LOG("%s\n", msg);
    }
@@ -773,14 +883,151 @@ static void check_input_rate(void)
    }
 }
 
+static void check_rewind(void)
+{
+   g_extern.frame_is_reverse = false;
+   if (!g_extern.state_manager)
+      return;
+
+   if (driver.input->key_pressed(driver.input_data, SSNES_REWIND))
+   {
+      msg_queue_clear(g_extern.msg_queue);
+      void *buf;
+      if (state_manager_pop(g_extern.state_manager, &buf))
+      {
+         msg_queue_push(g_extern.msg_queue, "Rewinding!", 0, 30);
+         psnes_unserialize(buf, psnes_serialize_size());
+         g_extern.frame_is_reverse = true;
+      }
+      else
+         msg_queue_push(g_extern.msg_queue, "Reached end of rewind buffer!", 0, 30);
+   }
+   else
+   {
+      static unsigned cnt = 0;
+      cnt = (cnt + 1) % (g_settings.rewind_granularity ? g_settings.rewind_granularity : 1); // Avoid possible SIGFPE.
+      if (cnt == 0)
+      {
+         psnes_serialize(g_extern.state_buf, psnes_serialize_size());
+         state_manager_push(g_extern.state_manager, g_extern.state_buf);
+      }
+   }
+}
+
+static void check_movie_record(void)
+{
+   static bool old_button = false;
+   bool new_button;
+   if ((new_button = driver.input->key_pressed(driver.input_data, SSNES_MOVIE_RECORD_TOGGLE)) && !old_button)
+   {
+      if (g_extern.bsv_movie)
+      {
+         msg_queue_clear(g_extern.msg_queue);
+         msg_queue_push(g_extern.msg_queue, "Stopping movie record!", 2, 180);
+         SSNES_LOG("Stopping movie record!\n");
+         bsv_movie_free(g_extern.bsv_movie);
+         g_extern.bsv_movie = NULL;
+      }
+      else
+      {
+         char path[512];
+         if (g_extern.state_slot > 0)
+            snprintf(path, sizeof(path), "%s%d.bsv", g_extern.bsv_movie_path, g_extern.state_slot);
+         else
+            snprintf(path, sizeof(path), "%s.bsv", g_extern.bsv_movie_path);
+
+         g_extern.bsv_movie = bsv_movie_init(path, SSNES_MOVIE_RECORD);
+         msg_queue_clear(g_extern.msg_queue);
+         msg_queue_push(g_extern.msg_queue, g_extern.bsv_movie ? "Starting movie record!" : "Failed to start movie record!", 2, 180);
+
+         if (g_extern.bsv_movie)
+            SSNES_LOG("Starting movie record!\n");
+         else
+            SSNES_ERR("Failed to start movie record!\n");
+      }
+   }
+
+   old_button = new_button;
+}
+
+static void check_pause(void)
+{
+   static bool old_state = false;
+   bool new_state = driver.input->key_pressed(driver.input_data, SSNES_PAUSE_TOGGLE);
+
+   static bool old_focus = true;
+   bool focus = true;
+
+   if (g_settings.pause_nonactive)
+      focus = driver.video->focus(driver.video_data);
+
+   if (focus && new_state && !old_state)
+   {
+      g_extern.is_paused = !g_extern.is_paused;
+
+      if (g_extern.is_paused)
+      {
+         SSNES_LOG("Paused!\n");
+         if (driver.audio_data)
+            driver.audio->stop(driver.audio_data);
+      }
+      else 
+      {
+         SSNES_LOG("Unpaused!\n");
+         if (driver.audio_data)
+         {
+            if (!driver.audio->start(driver.audio_data))
+            {
+               SSNES_ERR("Failed to resume audio driver! Will continue without audio!\n");
+               g_extern.audio_active = false;
+            }
+         }
+      }
+   }
+   else if (focus && !old_focus)
+   {
+      SSNES_LOG("Unpaused!\n");
+      g_extern.is_paused = false;
+      if (driver.audio_data)
+      {
+         if (!driver.audio->start(driver.audio_data))
+         {
+               SSNES_ERR("Failed to resume audio driver! Will continue without audio!\n");
+               g_extern.audio_active = false;
+         }
+      }
+   }
+   else if (!focus && old_focus)
+   {
+      SSNES_LOG("Paused!\n");
+      g_extern.is_paused = true;
+      if (driver.audio_data)
+         driver.audio->stop(driver.audio_data);
+   }
+
+   old_focus = focus;
+   old_state = new_state;
+}
+
 static void do_state_checks(void)
 {
+   check_pause();
+   if (g_extern.is_paused)
+      return;
+
    set_fast_forward_button(driver.input->key_pressed(driver.input_data, SSNES_FAST_FORWARD_KEY));
 
-   check_stateslots();
-   check_savestates();
+   if (!g_extern.bsv_movie)
+   {
+      check_stateslots();
+      check_savestates();
+      check_rewind();
+   }
    check_fullscreen();
    check_input_rate();
+
+   if (!g_extern.bsv_movie_playback)
+      check_movie_record();
 }
 
 
@@ -808,37 +1055,62 @@ int main(int argc, char *argv[])
    psnes_set_input_poll(input_poll);
    psnes_set_input_state(input_state);
    
+   init_msg_queue();
    init_controllers();
+   init_movie();
 
-   load_save_files();
+   if (!g_extern.bsv_movie)
+   {
+      load_save_files();
+      init_rewind();
+   }
 
 #ifdef HAVE_FFMPEG
    init_recording();
 #endif
 
-   init_msg_queue();
 
    // Main loop
    for(;;)
    {
       // Time to drop?
       if (driver.input->key_pressed(driver.input_data, SSNES_QUIT_KEY) ||
-            !driver.video->alive(driver.video_data))
+            !driver.video->alive(driver.video_data) || g_extern.bsv_movie_end)
          break;
 
       // Checks for stuff like fullscreen, save states, etc.
       do_state_checks();
       
       // Run libsnes for one frame.
-      psnes_run();
+      if (!g_extern.is_paused)
+         psnes_run();
+      else
+      {
+         input_poll();
+#ifdef _WIN32
+         Sleep(10);
+#else
+         struct timespec tv = {
+            .tv_sec = 0,
+            .tv_nsec = 10000000
+         };
+         nanosleep(&tv, NULL);
+#endif
+      }
    }
 
-   deinit_msg_queue();
 #ifdef HAVE_FFMPEG
    deinit_recording();
 #endif
 
-   save_files();
+   if (!g_extern.bsv_movie)
+   {
+      deinit_rewind();
+      save_files();
+   }
+
+   deinit_movie();
+   deinit_msg_queue();
 
    psnes_unload_cartridge();
    psnes_term();

ssnes.cfg

@@ -38,6 +38,7 @@
 # video_filter = ntsc
 
 # Path to a TTF font used for rendering messages. This path must be defined to enable fonts.
+# Do note that the _full_ path of the font is necessary!
 # video_font_path = 
 
 # Size of the TTF font rendered.
@@ -190,3 +191,26 @@
 # Decrease/increase input sample rate on the fly. Amount to decrease/increase is defined by audio_rate_step.
 # input_rate_step_up = kp_plus
 # input_rate_step_down = kp_minus
+
+# Enable rewinding. This will take a performance hit when playing, so it is disabled by default.
+# Do note that rewinding will only work properly when using bSNES libsnes core atm.
+# rewind_enable = false
+
+# Rewinding buffer size in megabytes. Bigger rewinding buffer means you can rewind longer.
+# The buffer should be approx. 20MB per minute of buffer time.
+# rewind_buffer_size = 20
+
+# Rewind granularity. When rewinding defined number of frames, you can rewind several frames at a time, increasing the rewinding speed.
+# rewind_granularity = 1
+
+# Hold button down to rewind. Rewinding must be enabled.
+# input_rewind = r
+
+# Toggle between recording and not.
+# input_movie_record_toggle = o
+
+# Toggle between paused and non-paused state
+# input_pause_toggle = p
+
+# Pause gameplay when window focus is lost.
+# pause_nonactive = true

tools/ssnes-joyconfig.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <getopt.h>
+#include <stdbool.h>
 #include "general.h"
 
 
@@ -34,6 +35,7 @@ static int g_player = 1;
 static int g_joypad = 0;
 static char *g_in_path = NULL;
 static char *g_out_path = NULL;
+static bool g_use_misc = false;
 
 static void print_help(void)
 {
@@ -47,6 +49,7 @@ static void print_help(void)
    puts("-i/--input: Input file to configure with. Binds will be added on or overwritten.");
    puts("\tIf not selected, an empty config will be used as a base.");
    puts("-o/--output: Output file to write to. If not selected, config file will be dumped to stdout.");
+   puts("-m/--misc: Also configure various keybinds that are not directly SNES related. These configurations are for player 1 only.");
    puts("-h/--help: This help.");
 }
 
@@ -55,9 +58,13 @@ struct bind
    char *keystr;
    char *confbtn[MAX_PLAYERS];
    char *confaxis[MAX_PLAYERS];
+   bool is_misc;
 };
 
-#define BIND(x, k) { x, { "input_player1_" #k "_btn", "input_player2_" #k "_btn", "input_player3_" #k "_btn", "input_player4_" #k "_btn", "input_player5_" #k "_btn" }, {"input_player1_" #k "_axis", "input_player2_" #k "_axis", "input_player3_" #k "_axis", "input_player4_" #k "_axis", "input_player5_" #k "_axis"}},
+#define BIND(x, k) { x, { "input_player1_" #k "_btn", "input_player2_" #k "_btn", "input_player3_" #k "_btn", "input_player4_" #k "_btn", "input_player5_" #k "_btn" }, {"input_player1_" #k "_axis", "input_player2_" #k "_axis", "input_player3_" #k "_axis", "input_player4_" #k "_axis", "input_player5_" #k "_axis"}, false},
+
+#define MISC_BIND(x, k) { x, { "input_" #k "_btn" }, { "input_" #k "_axis" }, true},
+
 static struct bind binds[] = {
    BIND("A button (right)", a)
    BIND("B button (down)", b)
@@ -71,6 +78,19 @@ static struct bind binds[] = {
    BIND("Up D-pad", up)
    BIND("Right D-pad", right)
    BIND("Down D-pad", down)
+
+   MISC_BIND("Save state", save_state)
+   MISC_BIND("Load state", load_state)
+   MISC_BIND("Exit emulator", exit_emulator)
+   MISC_BIND("Toggle fullscreen", toggle_fullscreen)
+   MISC_BIND("Save state slot increase", state_slot_increase)
+   MISC_BIND("Save state slot decrease", state_slot_decrease)
+   MISC_BIND("Toggle fast forward", toggle_fast_forward)
+   MISC_BIND("Audio input rate step up", rate_step_up)
+   MISC_BIND("Audio input rate step down", rate_step_down)
+   MISC_BIND("Rewind", rewind)
+   MISC_BIND("Movie recording toggle", movie_record_toggle)
+   MISC_BIND("Pause", pause_toggle)
 };
 
 void get_binds(config_file_t *conf, int player, int joypad)
@@ -95,20 +115,21 @@ void get_binds(config_file_t *conf, int player, int joypad)
       exit(1);
    }
 
-   SDL_JoystickUpdate();
-
    int last_axis = 0xFF;
+   int last_pos = 0;
    int num_axes = SDL_JoystickNumAxes(joystick);
    int initial_axes[num_axes];
+
+   SDL_PumpEvents();
+   SDL_JoystickUpdate();
    for (int i = 0; i < num_axes; i++)
       initial_axes[i] = SDL_JoystickGetAxis(joystick, i);
 
-
    fprintf(stderr, "Configuring binds for player #%d on joypad #%d (%s)\n", player + 1, joypad, SDL_JoystickName(joypad));
    fprintf(stderr, "Press Ctrl-C to exit early.\n");
    fprintf(stderr, "\n");
 
-   for (unsigned i = 0; i < sizeof(binds) / sizeof(struct bind); i++)
+   for (unsigned i = 0; i < sizeof(binds) / sizeof(struct bind) && (g_use_misc || !binds[i].is_misc) ; i++)
    {
       fprintf(stderr, "%s\n", binds[i].keystr);
 
@@ -116,6 +137,7 @@ void get_binds(config_file_t *conf, int player, int joypad)
       SDL_Event event;
       int value;
       const char *quark;
+      unsigned player_index = binds[i].is_misc ? 0 : player;
 
       while (SDL_WaitEvent(&event) && !done)
       {
@@ -124,24 +146,36 @@ void get_binds(config_file_t *conf, int player, int joypad)
             case SDL_JOYBUTTONDOWN:
                fprintf(stderr, "\tJoybutton pressed: %d\n", (int)event.jbutton.button);
                done = true;
-               config_set_int(conf, binds[i].confbtn[player], event.jbutton.button);
+               config_set_int(conf, binds[i].confbtn[player_index], event.jbutton.button);
                break;
 
             case SDL_JOYAXISMOTION:
-               if (abs(event.jaxis.value) > 20000 && 
-                     abs((int)event.jaxis.value - initial_axes[event.jaxis.axis]) > 20000 && 
-                     event.jaxis.axis != last_axis)
+               if ( // This is starting to look like Lisp! :D
+                     (abs((int)event.jaxis.value - initial_axes[event.jaxis.axis]) > 20000) &&
+                     (
+                        (event.jaxis.axis != last_axis) || 
+                        (
+                           (abs(event.jaxis.value) > 20000) && 
+                           (abs((int)event.jaxis.value - last_pos) > 20000)
+                        )
+                     )
+                  )
                {
                   last_axis = event.jaxis.axis;
+                  last_pos = event.jaxis.value;
                   fprintf(stderr, "\tJoyaxis moved: Axis %d, Value %d\n", (int)event.jaxis.axis, (int)event.jaxis.value);
                   done = true;
 
                   char buf[8];
                   snprintf(buf, sizeof(buf), event.jaxis.value > 0 ? "+%d" : "-%d", event.jaxis.axis);
-                  config_set_string(conf, binds[i].confaxis[player], buf);
+                  config_set_string(conf, binds[i].confaxis[player_index], buf);
                }
                break;
 
+            case SDL_KEYDOWN:
+               fprintf(stderr, ":V\n");
+               break;
+
             case SDL_JOYHATMOTION:
                value = event.jhat.value;
                if (value & SDL_HAT_UP)
@@ -160,7 +194,7 @@ void get_binds(config_file_t *conf, int player, int joypad)
                done = true;
                char buf[16];
                snprintf(buf, sizeof(buf), "h%d%s", event.jhat.hat, quark);
-               config_set_string(conf, binds[i].confbtn[player], buf);
+               config_set_string(conf, binds[i].confbtn[player_index], buf);
                break;
 
 
@@ -180,13 +214,14 @@ end:
 
 static void parse_input(int argc, char *argv[])
 {
-   char optstring[] = "i:o:p:j:h";
+   char optstring[] = "i:o:p:j:hm";
    struct option opts[] = {
       { "input", 1, NULL, 'i' },
       { "output", 1, NULL, 'o' },
       { "player", 1, NULL, 'p' },
       { "joypad", 1, NULL, 'j' },
       { "help", 0, NULL, 'h' },
+      { "misc", 0, NULL, 'm' },
       { NULL, 0, NULL, 0 }
    };
 
@@ -211,6 +246,10 @@ static void parse_input(int argc, char *argv[])
             g_out_path = strdup(optarg);
             break;
 
+         case 'm':
+            g_use_misc = true;
+            break;
+
          case 'j':
             g_joypad = strtol(optarg, NULL, 0);
             if (g_joypad < 0)