Add audio recording to SDL

OpenDialog/cocoa.m

@@ -11,7 +11,7 @@ char *do_open_rom_dialog(void)
         NSOpenPanel *dialog = [NSOpenPanel openPanel];
         dialog.title = @"Open ROM";
         dialog.allowedFileTypes = @[@"gb", @"gbc", @"sgb", @"isx"];
-        [dialog runModal];
+        if ([dialog runModal] != NSModalResponseOK) return nil;
         [key makeKeyAndOrderFront:nil];
         NSString *ret = [[[dialog URLs] firstObject] path];
         dup2(stderr_fd, STDERR_FILENO);
@@ -32,7 +32,7 @@ char *do_open_folder_dialog(void)
         dialog.title = @"Select Boot ROMs Folder";
         dialog.canChooseDirectories = true;
         dialog.canChooseFiles = false;
-        [dialog runModal];
+        if ([dialog runModal] != NSModalResponseOK) return nil;
         [key makeKeyAndOrderFront:nil];
         NSString *ret = [[[dialog URLs] firstObject] path];
         dup2(stderr_fd, STDERR_FILENO);
@@ -42,3 +42,25 @@ char *do_open_folder_dialog(void)
         return NULL;
     }
 }
+
+/* The Cocoa variant of this function isn't as fully featured as the GTK and Windows ones, as Mac users would use
+   the fully featured Cocoa port of SameBoy anyway*/
+char *do_save_recording_dialog(unsigned frequency)
+{
+    @autoreleasepool {
+        int stderr_fd = dup(STDERR_FILENO);
+        close(STDERR_FILENO);
+        NSWindow *key = [NSApp keyWindow];
+        NSSavePanel *dialog = [NSSavePanel savePanel];
+        dialog.title = @"Audio recording save location";
+        dialog.allowedFileTypes = @[@"aiff", @"aif", @"aifc", @"wav", @"raw", @"pcm"];
+        if ([dialog runModal] != NSModalResponseOK) return nil;
+        [key makeKeyAndOrderFront:nil];
+        NSString *ret = [[dialog URL] path];
+        dup2(stderr_fd, STDERR_FILENO);
+        if (ret) {
+            return strdup(ret.UTF8String);
+        }
+        return NULL;
+    }
+}

OpenDialog/gtk.c

@@ -6,6 +6,7 @@
 #include <string.h>
 
 #define GTK_FILE_CHOOSER_ACTION_OPEN 0
+#define GTK_FILE_CHOOSER_ACTION_SAVE 1
 #define GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER 2
 #define GTK_RESPONSE_ACCEPT -3
 #define GTK_RESPONSE_CANCEL -6
@@ -28,6 +29,19 @@ void _gtk_file_filter_set_name(void *filter, const char *name);
 void _gtk_file_chooser_add_filter(void *dialog, void *filter);
 void _gtk_main_iteration(void);
 bool _gtk_events_pending(void);
+unsigned long _g_signal_connect_data(void *instance,
+                                     const char *detailed_signal,
+                                     void *c_handler,
+                                     void *data,
+                                     void *destroy_data,
+                                     unsigned connect_flags);
+void _gtk_file_chooser_set_current_name(void *dialog,
+                                        const char *name);
+void *_gtk_file_chooser_get_filter(void *dialog);
+const char *_gtk_file_filter_get_name (void *dialog);
+#define g_signal_connect(instance, detailed_signal, c_handler, data) \
+g_signal_connect_data((instance), (detailed_signal), (c_handler), (data), NULL, 0)
+
 
 
 #define LAZY(symbol) static typeof(_##symbol) *symbol = NULL;\
@@ -180,3 +194,164 @@ lazy_error:
     fprintf(stderr, "Failed to display GTK dialog\n");
     return NULL;
 }
+
+static void filter_changed(void *dialog,
+                           void *unused,
+                           void *unused2)
+{
+    static void *handle = NULL;
+    
+    TRY_DLOPEN("libgtk-3.so");
+    TRY_DLOPEN("libgtk-3.so.0");
+    TRY_DLOPEN("libgtk-2.so");
+    TRY_DLOPEN("libgtk-2.so.0");
+    
+    if (!handle) {
+        goto lazy_error;
+    }
+    
+    LAZY(gtk_file_chooser_get_filename);
+    LAZY(gtk_file_chooser_set_current_name);
+    LAZY(g_free);
+    LAZY(gtk_file_chooser_get_filter);
+    LAZY(gtk_file_filter_get_name);
+    
+    char *filename = gtk_file_chooser_get_filename(dialog);
+    if (!filename) return;
+    char *temp = filename + strlen(filename);
+    char *basename = filename;
+    bool deleted_extension = false;
+    while (temp != filename) {
+        temp--;
+        if (*temp == '.' && !deleted_extension) {
+            *temp = 0;
+            deleted_extension = true;
+        }
+        else if (*temp == '/') {
+            basename = temp + 1;
+            break;
+        }
+    }
+    
+    char *new_filename = NULL;
+    
+    switch (gtk_file_filter_get_name(gtk_file_chooser_get_filter(dialog))[1]) {
+        case 'p':
+        default:
+            asprintf(&new_filename, "%s.aiff", basename);
+            break;
+        case 'I':
+            asprintf(&new_filename, "%s.wav", basename);
+            break;
+        case 'a':
+            asprintf(&new_filename, "%s.raw", basename);
+            break;
+    }
+    
+    
+    gtk_file_chooser_set_current_name(dialog, new_filename);
+    free(new_filename);
+    g_free(filename);
+    return;
+    
+lazy_error:
+    fprintf(stderr, "Failed updating the file extension\n");
+}
+
+
+char *do_save_recording_dialog(unsigned frequency)
+{
+    static void *handle = NULL;
+    
+    TRY_DLOPEN("libgtk-3.so");
+    TRY_DLOPEN("libgtk-3.so.0");
+    TRY_DLOPEN("libgtk-2.so");
+    TRY_DLOPEN("libgtk-2.so.0");
+    
+    if (!handle) {
+        goto lazy_error;
+    }
+    
+    
+    LAZY(gtk_init_check);
+    LAZY(gtk_file_chooser_dialog_new);
+    LAZY(gtk_dialog_run);
+    LAZY(g_free);
+    LAZY(gtk_widget_destroy);
+    LAZY(gtk_file_chooser_get_filename);
+    LAZY(g_log_set_default_handler);
+    LAZY(gtk_file_filter_new);
+    LAZY(gtk_file_filter_add_pattern);
+    LAZY(gtk_file_filter_set_name);
+    LAZY(gtk_file_chooser_add_filter);
+    LAZY(gtk_events_pending);
+    LAZY(gtk_main_iteration);
+    LAZY(g_signal_connect_data);
+    LAZY(gtk_file_chooser_set_current_name);
+    
+    /* Shut up GTK */
+    g_log_set_default_handler(nop, NULL);
+    
+    gtk_init_check(0, 0);
+    
+    
+    void *dialog = gtk_file_chooser_dialog_new("Audio recording save location",
+                                               0,
+                                               GTK_FILE_CHOOSER_ACTION_SAVE,
+                                               "_Cancel", GTK_RESPONSE_CANCEL,
+                                               "_Save", GTK_RESPONSE_ACCEPT,
+                                               NULL );
+    
+    
+    void *filter = gtk_file_filter_new();
+    gtk_file_filter_add_pattern(filter, "*.aiff");
+    gtk_file_filter_add_pattern(filter, "*.aif");
+    gtk_file_filter_add_pattern(filter, "*.aifc");
+    gtk_file_filter_set_name(filter, "Apple AIFF");
+    gtk_file_chooser_add_filter(dialog, filter);
+    
+    filter = gtk_file_filter_new();
+    gtk_file_filter_add_pattern(filter, "*.wav");
+    gtk_file_filter_set_name(filter, "RIFF WAVE");
+    gtk_file_chooser_add_filter(dialog, filter);
+    
+    filter = gtk_file_filter_new();
+    gtk_file_filter_add_pattern(filter, "*.raw");
+    gtk_file_filter_add_pattern(filter, "*.pcm");
+    static char raw_name[40];
+#ifdef GB_BIG_ENDIAN
+    sprintf(raw_name, "Raw PCM (Stereo %dHz, 16-bit BE)", frequency);
+#else
+    sprintf(raw_name, "Raw PCM (Stereo %dHz, 16-bit LE)", frequency);
+#endif
+    gtk_file_filter_set_name(filter, raw_name);
+    gtk_file_chooser_add_filter(dialog, filter);
+    
+    g_signal_connect(dialog, "notify::filter", filter_changed, NULL);
+    gtk_file_chooser_set_current_name(dialog, "Untitled.aiff");
+    
+    int res = gtk_dialog_run(dialog);
+    char *ret = NULL;
+    
+    if (res == GTK_RESPONSE_ACCEPT) {
+        char *filename;
+        filename = gtk_file_chooser_get_filename(dialog);
+        ret = strdup(filename);
+        g_free(filename);
+    }
+    
+    while (gtk_events_pending()) {
+        gtk_main_iteration();
+    }
+    
+    gtk_widget_destroy(dialog);
+    
+    while (gtk_events_pending()) {
+        gtk_main_iteration();
+    }
+    return ret;
+    
+lazy_error:
+    fprintf(stderr, "Failed to display GTK dialog\n");
+    return NULL;
+}

OpenDialog/open_dialog.h

@@ -3,4 +3,5 @@
 
 char *do_open_rom_dialog(void);
 char *do_open_folder_dialog(void);
+char *do_save_recording_dialog(unsigned frequency);
 #endif /* open_rom_h */

OpenDialog/windows.c

@@ -32,7 +32,7 @@ char *do_open_rom_dialog(void)
     dialog.lpstrInitialDir = NULL;
     dialog.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
 
-    if (GetOpenFileNameW(&dialog) == TRUE) {
+    if (GetOpenFileNameW(&dialog)) {
         return wc_to_utf8_alloc(filename);
     }
 
@@ -61,3 +61,45 @@ char *do_open_folder_dialog(void)
     if (SUCCEEDED(hrOleInit)) OleUninitialize();
     return ret;
 }
+
+char *do_save_recording_dialog(unsigned frequency)
+{
+    OPENFILENAMEW dialog;
+    wchar_t filename[MAX_PATH + 5];
+    
+    filename[0] = '\0';
+    memset(&dialog, 0, sizeof(dialog));
+    dialog.lStructSize = sizeof(dialog);
+    dialog.lpstrFile = filename;
+    dialog.nMaxFile = MAX_PATH;
+    if (frequency == 48000) {
+        dialog.lpstrFilter = L"RIFF WAVE\0*.wav\0Apple AIFF\0*.aiff;*.aif;*.aifc\0Raw PCM (Stereo 48000Hz, 16-bit LE)\0*.raw;*.pcm;\0All files\0*.*\0\0";
+    }
+    else {
+        dialog.lpstrFilter = L"RIFF WAVE\0*.wav\0Apple AIFF\0*.aiff;*.aif;*.aifc\0Raw PCM (Stereo 44100Hz, 16-bit LE)\0*.raw;*.pcm;\0All files\0*.*\0\0";
+    }
+    dialog.nFilterIndex = 1;
+    dialog.lpstrFileTitle = NULL;
+    dialog.nMaxFileTitle = 0;
+    dialog.lpstrInitialDir = NULL;
+    dialog.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
+    
+    if (GetSaveFileNameW(&dialog)) {
+        if (dialog.nFileExtension == 0) {
+            switch (dialog.nFilterIndex) {
+                case 1:
+                    wcscat(filename, L".wav");
+                    break;
+                case 2:
+                    wcscat(filename, L".aiff");
+                    break;
+                case 3:
+                    wcscat(filename, L".raw");
+                    break;
+            }
+        }
+        return wc_to_utf8_alloc(filename);
+    }
+    
+    return NULL;
+}

SDL/gui.c

@@ -316,6 +316,7 @@ static void enter_graphics_menu(unsigned index);
 static void enter_controls_menu(unsigned index);
 static void enter_joypad_menu(unsigned index);
 static void enter_audio_menu(unsigned index);
+static void toggle_audio_recording(unsigned index);
 
 extern void set_filename(const char *new_filename, typeof(free) *new_free_function);
 static void open_rom(unsigned index)
@@ -344,14 +345,17 @@ static void recalculate_menu_height(void)
     }
 }
 
+char audio_recording_menu_item[] = "Start Audio Recording";
+
 static const struct menu_item paused_menu[] = {
     {"Resume", NULL},
     {"Open ROM", open_rom},
     {"Emulation Options", enter_emulation_menu},
     {"Graphic Options", enter_graphics_menu},
     {"Audio Options", enter_audio_menu},
-    {"Keyboard", enter_controls_menu},
+    {"Keyboard Options", enter_controls_menu},
-    {"Joypad", enter_joypad_menu},
+    {"Joypad Options", enter_joypad_menu},
+    {audio_recording_menu_item, toggle_audio_recording},
     {"Help", item_help},
     {"Quit SameBoy", item_exit},
     {NULL,}
@@ -1151,6 +1155,70 @@ void connect_joypad(void)
     }
 }
 
+static void toggle_audio_recording(unsigned index)
+{
+    if (!GB_is_inited(&gb)) {
+        SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", "Cannot start audio recording, open a ROM file first.", window);
+        return;
+    }
+    static bool is_recording = false;
+    if (is_recording) {
+        is_recording = false;
+        show_osd_text("Audio recording ended");
+        int error = GB_stop_audio_recording(&gb);
+        if (error) {
+            char *message = NULL;
+            asprintf(&message, "Could not finalize recording: %s", strerror(error));
+            SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", message, window);
+            free(message);
+        }
+        static const char item_string[] = "Start Audio Recording";
+        memcpy(audio_recording_menu_item, item_string, sizeof(item_string));
+        return;
+    }
+    char *filename = do_save_recording_dialog(GB_get_sample_rate(&gb));
+    
+    /* Drop events as it SDL seems to catch several in-dialog events */
+    SDL_Event event;
+    while (SDL_PollEvent(&event));
+    
+    if (filename) {
+        GB_audio_format_t format = GB_AUDIO_FORMAT_RAW;
+        size_t length = strlen(filename);
+        if (length >= 5) {
+            if (strcasecmp(".aiff", filename + length - 5) == 0) {
+                format = GB_AUDIO_FORMAT_AIFF;
+            }
+            else if (strcasecmp(".aifc", filename + length - 5) == 0) {
+                format = GB_AUDIO_FORMAT_AIFF;
+            }
+            else if (length >= 4) {
+                if (strcasecmp(".aif", filename + length - 4) == 0) {
+                    format = GB_AUDIO_FORMAT_AIFF;
+                }
+                else if (strcasecmp(".wav", filename + length - 4) == 0) {
+                    format = GB_AUDIO_FORMAT_WAV;
+                }
+            }
+        }
+        
+        int error = GB_start_audio_recording(&gb, filename, format);
+        free(filename);
+        if (error) {
+            char *message = NULL;
+            asprintf(&message, "Could not finalize recording: %s", strerror(error));
+            SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", message, window);
+            free(message);
+            return;
+        }
+        
+        is_recording = true;
+        static const char item_string[] = "Stop Audio Recording";
+        memcpy(audio_recording_menu_item, item_string, sizeof(item_string));
+        show_osd_text("Audio recording started");
+    }
+}
+
 void run_gui(bool is_running)
 {
     SDL_ShowCursor(SDL_ENABLE);

SDL/main.c

@@ -757,6 +757,11 @@ static void save_configuration(void)
     }
 }
 
+static void stop_recording(void)
+{
+    GB_stop_audio_recording(&gb);
+}
+
 static bool get_arg_flag(const char *flag, int *argc, char **argv)
 {
     for (unsigned i = 1; i < *argc; i++) {
@@ -847,6 +852,7 @@ int main(int argc, char **argv)
     }
     
     atexit(save_configuration);
+    atexit(stop_recording);
     
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);

Windows/stdio.h

@@ -1,6 +1,7 @@
 #pragma once
 #include_next <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
 
 int access(const char *filename, int mode);
 #define R_OK 2
@@ -20,6 +21,16 @@ static inline int vasprintf(char **str, const char *fmt, va_list args)
     }
     return ret;
 }
+
+static inline int asprintf(char **strp, const char *fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    int r = vasprintf(strp, fmt, args);
+    va_end(args);
+    return r;
+}
+
 #endif
 #endif
 

Windows/string.h

@@ -1,3 +1,4 @@
 #pragma once
 #include_next <string.h>
 #define strdup _strdup
+#define strcasecmp _stricmp