Yay, works :)

config.def.h

@@ -245,6 +245,7 @@ static const struct snes_keybind snes_keybinds_1[] = {
    { SSNES_CHEAT_INDEX_PLUS,           SDLK_y,      NO_BTN,      AXIS_NONE },
    { SSNES_CHEAT_INDEX_MINUS,          SDLK_t,      NO_BTN,      AXIS_NONE },
    { SSNES_CHEAT_TOGGLE,               SDLK_u,      NO_BTN,      AXIS_NONE },
+   { SSNES_SCREENSHOT,                 SDLK_PRINT,  NO_BTN,      AXIS_NONE },
    { -1 }
 };
 

driver.h

@@ -44,7 +44,8 @@ enum
    SSNES_SHADER_PREV,
    SSNES_CHEAT_INDEX_PLUS,
    SSNES_CHEAT_INDEX_MINUS,
-   SSNES_CHEAT_TOGGLE
+   SSNES_CHEAT_TOGGLE,
+   SSNES_SCREENSHOT
 };
 
 

general.h

@@ -44,7 +44,7 @@
 
 
 #define MAX_PLAYERS 5
-#define MAX_BINDS 31 // Needs to be increased every time there are new binds added.
+#define MAX_BINDS 32 // Needs to be increased every time there are new binds added.
 #define SSNES_NO_JOYPAD 0xFFFF
 
 enum ssnes_shader_type
@@ -121,6 +121,8 @@ struct settings
    char libsnes[256];
    char cheat_database[256];
 
+   char screenshot_directory[256];
+
    bool rewind_enable;
    unsigned rewind_buffer_size;
    unsigned rewind_granularity;
@@ -258,7 +260,9 @@ struct global
       size_t ptr;
    } shader_dir;
 
-   char sha256[65];
+   char sha256[64 + 1];
+
+   bool do_screenshot;
 
 #ifdef HAVE_XML
    cheat_manager_t *cheat;

screenshot.c

@@ -87,7 +87,7 @@ bool screenshot_dump(const char *folder, const uint16_t *frame,
    time(&cur_time);
 
    char timefmt[64];
-   strftime(timefmt, sizeof(timefmt), "SSNES-%c", localtime(&cur_time));
+   strftime(timefmt, sizeof(timefmt), "SSNES-%c.bmp", localtime(&cur_time));
 
    char filename[256];
    strlcpy(filename, folder, sizeof(filename));

settings.c

@@ -374,6 +374,7 @@ static void parse_config_file(void)
    CONFIG_GET_STRING(audio.dsp_plugin, "audio_dsp_plugin");
    CONFIG_GET_STRING(input.driver, "input_driver");
    CONFIG_GET_STRING(libsnes, "libsnes_path");
+   CONFIG_GET_STRING(screenshot_directory, "screenshot_directory");
 
    CONFIG_GET_BOOL(rewind_enable, "rewind_enable");
 
@@ -435,6 +436,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(cheat_index_plus,      SSNES_CHEAT_INDEX_PLUS)
       DECLARE_BIND(cheat_index_minus,     SSNES_CHEAT_INDEX_MINUS)
       DECLARE_BIND(cheat_toggle,          SSNES_CHEAT_TOGGLE)
+      DECLARE_BIND(screenshot,            SSNES_SCREENSHOT)
    },
    {
       DECLARE_BIND(player2_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -467,6 +469,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(cheat_index_plus,      SSNES_CHEAT_INDEX_PLUS)
       DECLARE_BIND(cheat_index_minus,     SSNES_CHEAT_INDEX_MINUS)
       DECLARE_BIND(cheat_toggle,          SSNES_CHEAT_TOGGLE)
+      DECLARE_BIND(screenshot,            SSNES_SCREENSHOT)
    },
    {
       DECLARE_BIND(player3_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -499,6 +502,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(cheat_index_plus,      SSNES_CHEAT_INDEX_PLUS)
       DECLARE_BIND(cheat_index_minus,     SSNES_CHEAT_INDEX_MINUS)
       DECLARE_BIND(cheat_toggle,          SSNES_CHEAT_TOGGLE)
+      DECLARE_BIND(screenshot,            SSNES_SCREENSHOT)
    },
    {
       DECLARE_BIND(player4_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -531,6 +535,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(cheat_index_plus,      SSNES_CHEAT_INDEX_PLUS)
       DECLARE_BIND(cheat_index_minus,     SSNES_CHEAT_INDEX_MINUS)
       DECLARE_BIND(cheat_toggle,          SSNES_CHEAT_TOGGLE)
+      DECLARE_BIND(screenshot,            SSNES_SCREENSHOT)
    },
    {
       DECLARE_BIND(player5_a,             SNES_DEVICE_ID_JOYPAD_A)
@@ -563,6 +568,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
       DECLARE_BIND(cheat_index_plus,      SSNES_CHEAT_INDEX_PLUS)
       DECLARE_BIND(cheat_index_minus,     SSNES_CHEAT_INDEX_MINUS)
       DECLARE_BIND(cheat_toggle,          SSNES_CHEAT_TOGGLE)
+      DECLARE_BIND(screenshot,            SSNES_SCREENSHOT)
    },
 };
 

ssnes.c

@@ -32,6 +32,7 @@
 #include "movie.h"
 #include "netplay.h"
 #include "strl.h"
+#include "screenshot.h"
 #include "cheats.h"
 #include <assert.h>
 #ifdef HAVE_SRC
@@ -78,6 +79,30 @@ static void set_fast_forward_button(bool new_button_state)
    old_button_state = new_button_state;
 }
 
+static void take_screenshot(const uint16_t *frame, unsigned width, unsigned height)
+{
+   if (!*(g_settings.screenshot_directory))
+      return;
+
+   bool ret = screenshot_dump(g_settings.screenshot_directory, frame, 
+         width, height, (height == 448 || height == 478) ? 1024 : 2048);
+
+   const char *msg = NULL;
+   if (ret)
+   {
+      SSNES_LOG("Taking screenshot!\n");
+      msg = "Taking screenshot!";
+   }
+   else
+   {
+      SSNES_WARN("Failed to take screenshot ...\n");
+      msg = "Failed to take screenshot!";
+   }
+
+   msg_queue_clear(g_extern.msg_queue);
+   msg_queue_push(g_extern.msg_queue, msg, 1, 180);
+}
+
 // libsnes: 0.065
 // Format received is 16-bit 0RRRRRGGGGGBBBBB
 static void video_frame(const uint16_t *data, unsigned width, unsigned height)
@@ -99,6 +124,9 @@ static void video_frame(const uint16_t *data, unsigned width, unsigned height)
       }
    }
 
+   if (g_extern.do_screenshot)
+      take_screenshot(data, width, height);
+
 #ifdef HAVE_FFMPEG
    if (g_extern.recording)
    {
@@ -1311,6 +1339,14 @@ static void check_cheats(void)
 }
 #endif
 
+static void check_screenshot(void)
+{
+   static bool old_pressed = false;
+   bool pressed = driver.input->key_pressed(driver.input_data, SSNES_SCREENSHOT);
+   g_extern.do_screenshot = pressed && !old_pressed;
+   old_pressed = pressed;
+}
+
 static void do_state_checks(void)
 {
    if (!g_extern.netplay)
@@ -1342,6 +1378,7 @@ static void do_state_checks(void)
 
    check_fullscreen();
    check_input_rate();
+   check_screenshot();
 }
 
 static void fill_title_buf(void)

ssnes.cfg

@@ -278,3 +278,9 @@
 # input_cheat_index_plus = y
 # input_cheat_index_minus = t
 # input_cheat_toggle = u
+
+# Take screenshot
+# input_screenshot = print_screen
+
+# Directory to dump screenshots to.
+# screenshot_directory =

tools/ssnes-joyconfig.c

@@ -97,6 +97,7 @@ static struct bind binds[] = {
    MISC_BIND("Toggle cheat on/off", cheat_toggle)
    MISC_BIND("Cheat index plus", cheat_index_plus)
    MISC_BIND("Cheat index minus", cheat_index_minus)
+   MISC_BIND("Screenshot", screenshot)
 };
 
 static void get_binds(config_file_t *conf, int player, int joypad)