c++:change RETROK_HOME in input_keymaps.c ;java : MainActivity add check cores file.

app/src/main/cpp/gfx/common/gl2_common.h

@@ -249,6 +249,8 @@ struct gl2
    struct video_fbo_rect fbo_rect[GFX_MAX_SHADERS];   /* unsigned alignment */
 
    bool pbo_readback_valid[4];
+
+   GLuint background_texture;
 };
 
 #define GL2_BIND_TEXTURE(id, wrap_mode, mag_filter, min_filter) \

app/src/main/cpp/gfx/drivers/gl2.c

@@ -433,7 +433,6 @@ static void gl2_set_viewport(gl2_t *gl,
    {
       float desired_aspect = video_driver_get_aspect_ratio();
 
-#if defined(HAVE_MENU)
       if (settings->uints.video_aspect_ratio_idx == ASPECT_RATIO_CUSTOM)
       {
          const struct video_viewport *custom = video_viewport_get_custom();
@@ -444,7 +443,6 @@ static void gl2_set_viewport(gl2_t *gl,
          viewport_height = custom->height;
       }
       else
-#endif
       {
          float delta;
 
@@ -835,7 +833,7 @@ static void gl2_create_fbo_texture(gl2_t *gl,
    }
 
 #if !defined(HAVE_OPENGLES2)
-   if (     fp_fbo 
+   if (     fp_fbo
          && (chain->flags & GL2_CHAIN_FLAG_HAS_FP_FBO))
    {
       RARCH_LOG("[GL]: FBO pass #%d is floating-point.\n", i);
@@ -858,7 +856,7 @@ static void gl2_create_fbo_texture(gl2_t *gl,
       if (force_srgb_disable)
          srgb_fbo = false;
 
-      if (      srgb_fbo 
+      if (      srgb_fbo
             && (chain->flags & GL2_CHAIN_FLAG_HAS_SRGB_FBO))
       {
          RARCH_LOG("[GL]: FBO pass #%d is sRGB.\n", i);
@@ -868,8 +866,8 @@ static void gl2_create_fbo_texture(gl2_t *gl,
          glTexImage2D(GL_TEXTURE_2D,
                0, GL_SRGB_ALPHA_EXT,
                gl->fbo_rect[i].width, gl->fbo_rect[i].height, 0,
-               (chain->flags & GL2_CHAIN_FLAG_HAS_SRGB_FBO_GLES3) 
-               ? GL_RGBA 
+               (chain->flags & GL2_CHAIN_FLAG_HAS_SRGB_FBO_GLES3)
+               ? GL_RGBA
                : GL_SRGB_ALPHA_EXT,
                GL_UNSIGNED_BYTE, NULL);
 #else
@@ -1096,7 +1094,7 @@ static void gl2_renderchain_init(
    gl2_shader_scale(gl, &scaler, shader_info_num);
 
    /* we always want FBO to be at least initialized on startup for consoles */
-   if (      shader_info_num == 1 
+   if (      shader_info_num == 1
          && (!(scale.flags & FBO_SCALE_FLAG_VALID)))
       return;
 
@@ -1747,15 +1745,15 @@ static void gl_load_texture_data(
    glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
    glTexImage2D(GL_TEXTURE_2D,
          0,
-         (use_rgba || !rgb32) 
-         ? GL_RGBA 
+         (use_rgba || !rgb32)
+         ? GL_RGBA
          : RARCH_GL_INTERNAL_FORMAT32,
          width, height, 0,
-         (use_rgba || !rgb32) 
-         ? GL_RGBA 
+         (use_rgba || !rgb32)
+         ? GL_RGBA
          : RARCH_GL_TEXTURE_TYPE32,
-         (rgb32) 
-         ? RARCH_GL_FORMAT32 
+         (rgb32)
+         ? RARCH_GL_FORMAT32
          : GL_UNSIGNED_SHORT_4_4_4_4,
          frame);
 
@@ -1969,7 +1967,7 @@ static void gl2_set_viewport_wrapper(void *data, unsigned viewport_width,
  *
  * gl2_get_fallback_shader_type(RARCH_SHADER_NONE) returns a default shader type.
  * if gl2_get_fallback_shader_type(type) != type, type was not supported.
- * 
+ *
  * Returns: A supported shader type.
  *  If RARCH_SHADER_NONE is returned, no shader backend is supported.
  **/
@@ -2242,7 +2240,7 @@ static void gl2_init_textures(gl2_t *gl)
    /* GLES is picky about which format we use here.
     * Without extensions, we can *only* render to 16-bit FBOs. */
 
-   if (     (gl->flags & GL2_FLAG_HW_RENDER_USE) 
+   if (     (gl->flags & GL2_FLAG_HW_RENDER_USE)
          && (gl->base_size == sizeof(uint32_t)))
    {
       if (gl_check_capability(GL_CAPS_ARGB8))
@@ -2295,9 +2293,9 @@ static void gl2_set_texture_frame(void *data,
       float alpha)
 {
    settings_t *settings            = config_get_ptr();
-   enum texture_filter_type 
-      menu_filter                  = settings->bools.menu_linear_filter 
-      ? TEXTURE_FILTER_LINEAR 
+   enum texture_filter_type
+      menu_filter                  = settings->bools.menu_linear_filter
+      ? TEXTURE_FILTER_LINEAR
       : TEXTURE_FILTER_NEAREST;
    unsigned base_size              = rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
    gl2_t *gl                       = (gl2_t*)data;
@@ -2549,6 +2547,52 @@ static void gl2_pbo_async_readback(gl2_t *gl)
    gl2_renderchain_unbind_pbo();
 }
 
+static void gl2_render_background(gl2_t *gl) {
+   GLfloat color[16];
+   unsigned width                      = gl->video_width;
+   unsigned height                     = gl->video_height;
+
+   color[ 0]              = 1.0f;
+   color[ 1]              = 1.0f;
+   color[ 2]              = 1.0f;
+   color[ 3]              = 1.0f;
+   color[ 4]              = 1.0f;
+   color[ 5]              = 1.0f;
+   color[ 6]              = 1.0f;
+   color[ 7]              = 1.0f;
+   color[ 8]              = 1.0f;
+   color[ 9]              = 1.0f;
+   color[10]              = 1.0f;
+   color[11]              = 1.0f;
+   color[12]              = 1.0f;
+   color[13]              = 1.0f;
+   color[14]              = 1.0f;
+   color[15]              = 1.0f;
+
+   glEnable(GL_BLEND);
+   glViewport(0, 0, width, height);
+
+   gl->shader->use(gl, gl->shader_data, VIDEO_SHADER_STOCK_BLEND, true);
+
+   gl->coords.vertex    = vertexes_flipped;
+   gl->coords.tex_coord = tex_coords;
+   gl->coords.color     = color;
+   gl->coords.vertices  = 4;
+
+   gl->shader->set_coords(gl->shader_data, &gl->coords);
+   gl->shader->set_mvp(gl->shader_data, &gl->mvp_no_rot);
+
+   glBindTexture(GL_TEXTURE_2D, gl->background_texture);
+   glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+   glDisable(GL_BLEND);
+   gl->coords.vertex    = gl->vertex_ptr;
+   gl->coords.tex_coord = gl->tex_info.coord;
+   gl->coords.color     = gl->white_color_ptr;
+   gl->coords.vertices  = 4;
+   glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
+}
+
 static bool gl2_frame(void *data, const void *frame,
       unsigned frame_width, unsigned frame_height,
       uint64_t frame_count,
@@ -2567,7 +2611,7 @@ static bool gl2_frame(void *data, const void *frame,
 #ifndef EMSCRIPTEN
    unsigned black_frame_insertion      = video_info->black_frame_insertion;
 #endif
-   bool input_driver_nonblock_state    = video_info->input_driver_nonblock_state; 
+   bool input_driver_nonblock_state    = video_info->input_driver_nonblock_state;
    bool hard_sync                      = video_info->hard_sync;
    unsigned hard_sync_frames           = video_info->hard_sync_frames;
    struct font_params *osd_params      = (struct font_params*)
@@ -2588,6 +2632,9 @@ static bool gl2_frame(void *data, const void *frame,
    if (!gl)
       return false;
 
+     glClear(GL_COLOR_BUFFER_BIT);
+     gl2_render_background(gl);
+
    if (gl->flags & GL2_FLAG_SHARED_CONTEXT_USE)
       gl->ctx_driver->bind_hw_render(gl->ctx_data, false);
 
@@ -2745,7 +2792,7 @@ static bool gl2_frame(void *data, const void *frame,
       SET_TEXTURE_COORDS(feedback_info.coord, xamt, yamt);
    }
 
-   glClear(GL_COLOR_BUFFER_BIT);
+//   glClear(GL_COLOR_BUFFER_BIT);
 
    params.data          = gl;
    params.width         = frame_width;
@@ -2842,9 +2889,9 @@ static bool gl2_frame(void *data, const void *frame,
 #endif
             gl2_pbo_async_readback(gl);
 
-    if (gl->ctx_driver->swap_buffers) 
+    if (gl->ctx_driver->swap_buffers)
         gl->ctx_driver->swap_buffers(gl->ctx_data);
-	
+
  /* Emscripten has to do black frame insertion in its main loop */
 #ifndef EMSCRIPTEN
    /* Disable BFI during fast forward, slow-motion,
@@ -2853,7 +2900,7 @@ static bool gl2_frame(void *data, const void *frame,
          black_frame_insertion
          && !input_driver_nonblock_state
          && !runloop_is_slowmotion
-         && !runloop_is_paused 
+         && !runloop_is_paused
          && (!(gl->flags & GL2_FLAG_MENU_TEXTURE_ENABLE)))
     {
         size_t n;
@@ -2863,12 +2910,12 @@ static bool gl2_frame(void *data, const void *frame,
           glClear(GL_COLOR_BUFFER_BIT);
 
           if (gl->ctx_driver->swap_buffers)
-            gl->ctx_driver->swap_buffers(gl->ctx_data); 
-        }  
-    }   
-#endif   	
+            gl->ctx_driver->swap_buffers(gl->ctx_data);
+        }
+    }
+#endif
 
-   /* check if we are fast forwarding or in menu, 
+   /* check if we are fast forwarding or in menu,
     * if we are ignore hard sync */
    if (     (gl->flags & GL2_FLAG_HAVE_SYNC)
          &&  hard_sync
@@ -3352,6 +3399,39 @@ static bool renderchain_gl2_init_first(void **renderchain_handle)
    return true;
 }
 
+static bool gl2_load_background(gl2_t *gl) {
+    struct texture_image img;
+    const char *path = "/sdcard/app_main_bg.png";
+
+    img.width = 0;
+    img.height = 0;
+    img.pixels = NULL;
+    img.supports_rgba = video_driver_supports_rgba();
+
+    if (!image_texture_load(&img, path)) {
+      RARCH_ERR("[GL]: Failed to load texture image from: \"%s\".\n",
+                path);
+      return false;
+    }
+    RARCH_LOG("[GL]: Loaded texture image(%d, %d) from: \"%s\" ...\n",
+             img.width,
+             img.height,
+             path);
+
+    gl_load_texture_data(
+            gl->background_texture,
+            RARCH_WRAP_DEFAULT,
+            TEXTURE_FILTER_LINEAR,
+            4,
+            img.width, img.height,
+            img.pixels,
+            sizeof(uint32_t)
+    );
+    image_texture_free(&img);
+
+    return true;
+}
+
 static void *gl2_init(const video_info_t *video,
       input_driver_t **input, void **input_data)
 {
@@ -3661,7 +3741,7 @@ static void *gl2_init(const video_info_t *video,
 
    if (gl->shader->filter_type(gl->shader_data,
             1, &force_smooth))
-      gl->tex_min_filter = (gl->flags & GL2_FLAG_TEXTURE_MIPMAP) 
+      gl->tex_min_filter = (gl->flags & GL2_FLAG_TEXTURE_MIPMAP)
          ? (force_smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST)
          : (force_smooth ? GL_LINEAR : GL_NEAREST);
    else
@@ -3752,6 +3832,10 @@ static void *gl2_init(const video_info_t *video,
    if (gl->flags & GL2_FLAG_SHARED_CONTEXT_USE)
       gl->ctx_driver->bind_hw_render(gl->ctx_data, true);
 
+   glGenTextures(1, &gl->background_texture);
+   glBindTexture(GL_TEXTURE_2D, gl->background_texture);
+   gl2_load_background(gl);
+
    return gl;
 
 error:
@@ -4315,7 +4399,7 @@ static uintptr_t gl2_load_texture(void *video_data, void *data,
    return id;
 }
 
-static void gl2_unload_texture(void *data, 
+static void gl2_unload_texture(void *data,
       bool threaded, uintptr_t id)
 {
    GLuint glid;

app/src/main/cpp/gfx/video_defines.h

@@ -37,31 +37,31 @@ enum texture_filter_type
 
 enum aspect_ratio
 {
-   ASPECT_RATIO_4_3 = 0,
-   ASPECT_RATIO_16_9,
-   ASPECT_RATIO_16_10,
-   ASPECT_RATIO_16_15,
-   ASPECT_RATIO_21_9,
-   ASPECT_RATIO_1_1,
-   ASPECT_RATIO_2_1,
-   ASPECT_RATIO_3_2,
-   ASPECT_RATIO_3_4,
-   ASPECT_RATIO_4_1,
-   ASPECT_RATIO_4_4,
-   ASPECT_RATIO_5_4,
-   ASPECT_RATIO_6_5,
-   ASPECT_RATIO_7_9,
-   ASPECT_RATIO_8_3,
-   ASPECT_RATIO_8_7,
-   ASPECT_RATIO_19_12,
-   ASPECT_RATIO_19_14,
-   ASPECT_RATIO_30_17,
-   ASPECT_RATIO_32_9,
-   ASPECT_RATIO_CONFIG,
-   ASPECT_RATIO_SQUARE,
-   ASPECT_RATIO_CORE,
-   ASPECT_RATIO_CUSTOM,
-   ASPECT_RATIO_FULL,
+   ASPECT_RATIO_4_3     = 0,
+   ASPECT_RATIO_16_9    = 1,
+   ASPECT_RATIO_16_10   = 2,
+   ASPECT_RATIO_16_15   = 3,
+   ASPECT_RATIO_21_9    = 4,
+   ASPECT_RATIO_1_1     = 5,
+   ASPECT_RATIO_2_1     = 6,
+   ASPECT_RATIO_3_2     = 7,
+   ASPECT_RATIO_3_4     = 8,
+   ASPECT_RATIO_4_1     = 9,
+   ASPECT_RATIO_4_4     = 10,
+   ASPECT_RATIO_5_4     = 11,
+   ASPECT_RATIO_6_5     = 12,
+   ASPECT_RATIO_7_9     = 13,
+   ASPECT_RATIO_8_3     = 14,
+   ASPECT_RATIO_8_7     = 15,
+   ASPECT_RATIO_19_12   = 16,
+   ASPECT_RATIO_19_14   = 17,
+   ASPECT_RATIO_30_17   = 18,
+   ASPECT_RATIO_32_9    = 19,
+   ASPECT_RATIO_CONFIG  = 20,
+   ASPECT_RATIO_SQUARE  = 21,
+   ASPECT_RATIO_CORE    = 22,
+   ASPECT_RATIO_CUSTOM  = 23,
+   ASPECT_RATIO_FULL    = 24,
 
    ASPECT_RATIO_END
 };

app/src/main/cpp/play_feature_delivery/play_feature_delivery.c

@@ -249,6 +249,47 @@ JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCom
    runloop_st->flags2 |= RUNLOOP_FLAG_NEED_REINIT_DRIVERS;
 }
 
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setAspectRatio
+   (JNIEnv *env, jobject thisObj, jint aspect_ratio_index) {
+   settings_t  *settings          = config_get_ptr();
+   settings->uints.video_aspect_ratio_idx = aspect_ratio_index;
+
+   command_event(CMD_EVENT_VIDEO_SET_ASPECT_RATIO, NULL);
+}
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setCustomX
+        (JNIEnv *env, jobject thisObj, jint x) {
+   struct video_viewport *custom_vp   = video_viewport_get_custom();
+   custom_vp->x = x;
+   command_event(CMD_EVENT_VIDEO_APPLY_STATE_CHANGES, NULL);
+}
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setCustomY
+        (JNIEnv *env, jobject thisObj, jint y) {
+   struct video_viewport *custom_vp   = video_viewport_get_custom();
+   custom_vp->y = y;
+   command_event(CMD_EVENT_VIDEO_APPLY_STATE_CHANGES, NULL);
+}
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setCustomWidth
+        (JNIEnv *env, jobject thisObj, jint width) {
+   struct video_viewport *custom_vp   = video_viewport_get_custom();
+   custom_vp->width = width;
+   command_event(CMD_EVENT_VIDEO_APPLY_STATE_CHANGES, NULL);
+}
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setCustomHeight
+        (JNIEnv *env, jobject thisObj, jint height) {
+   struct video_viewport *custom_vp   = video_viewport_get_custom();
+   custom_vp->height = height;
+   command_event(CMD_EVENT_VIDEO_APPLY_STATE_CHANGES, NULL);
+}
+
+JNIEXPORT void JNICALL Java_com_retroarch_browser_retroactivity_RetroActivityCommon_setCustomViewPort
+        (JNIEnv *env, jobject thisObj, jint x, jint y, jint width, jint height) {
+   struct video_viewport *custom_vp   = video_viewport_get_custom();
+   custom_vp->x = x;
+   custom_vp->y = y;
+   custom_vp->width = width;
+   custom_vp->height = height;
+   command_event(CMD_EVENT_VIDEO_APPLY_STATE_CHANGES, NULL);
+}
 /******************/
 /* Initialisation */
 /******************/
@@ -633,4 +674,4 @@ bool play_feature_delivery_delete(const char *core_file)
    (*env)->DeleteLocalRef(env, core_name_jni);
 
    return true;
-}
+}

app/src/main/java/com/retroarch/browser/retroactivity/AspectRatio.java

@@ -0,0 +1,39 @@
+package com.retroarch.browser.retroactivity;
+
+public enum AspectRatio {
+    ASPECT_RATIO_4_3(0),
+    ASPECT_RATIO_16_9(1),
+    ASPECT_RATIO_16_10(2),
+    ASPECT_RATIO_16_15(3),
+    ASPECT_RATIO_21_9(4),
+    ASPECT_RATIO_1_1(5),
+    ASPECT_RATIO_2_1(6),
+    ASPECT_RATIO_3_2(7),
+    ASPECT_RATIO_3_4(8),
+    ASPECT_RATIO_4_1(9),
+    ASPECT_RATIO_4_4(10),
+    ASPECT_RATIO_5_4(11),
+    ASPECT_RATIO_6_5(12),
+    ASPECT_RATIO_7_9(13),
+    ASPECT_RATIO_8_3(14),
+    ASPECT_RATIO_8_7(15),
+    ASPECT_RATIO_19_12(16),
+    ASPECT_RATIO_19_14(17),
+    ASPECT_RATIO_30_17(18),
+    ASPECT_RATIO_32_9(19),
+    ASPECT_RATIO_CONFIG(20),
+    ASPECT_RATIO_SQUARE(21),
+    ASPECT_RATIO_CORE(22),
+    ASPECT_RATIO_CUSTOM(23),
+    ASPECT_RATIO_FULL(24);
+
+    private final int value;
+
+    private AspectRatio(int value) {
+        this.value = value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+}

app/src/main/java/com/retroarch/browser/retroactivity/RetroActivityCommon.java

@@ -6,6 +6,7 @@ import com.xugame.gameconsole.preferences.UserPreferences;
 import com.xugame.gameconsole.util.DebugUtil;
 
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.app.NativeActivity;
 import android.content.res.Configuration;
 import android.content.Context;
@@ -21,7 +22,9 @@ import android.os.storage.StorageVolume;
 import android.system.Os;
 import android.view.HapticFeedbackConstants;
 import android.view.InputDevice;
+import android.view.InputQueue;
 import android.view.Surface;
+import android.view.SurfaceHolder;
 import android.view.WindowManager;
 import android.app.UiModeManager;
 import android.os.BatteryManager;
@@ -42,13 +45,12 @@ import java.util.Locale;
 /**
  * Class which provides common methods for RetroActivity related classes.
  */
+//public class RetroActivityCommon extends NativeActivity
 public class RetroActivityCommon extends NativeActivity
 {
   private static final String TAG = "RetroActivityCommonTAG";
 
-  static {
-    System.loadLibrary("retroarch-activity");
-  }
+  static { System.loadLibrary("retroarch-activity"); }
 
   public static int FRONTEND_POWERSTATE_NONE = 0;
   public static int FRONTEND_POWERSTATE_NO_SOURCE = 1;
@@ -150,13 +152,9 @@ DebugUtil.i(TAG,"onTick"+millisUntilFinished);
   // Use a separate JNI function to explicitly trigger the readback.
   public void onRetroArchExit()
   {
-    DebugUtil.i(TAG,"onRetroArchExit");
-    runOnUiThread(new Runnable() {
-      @Override
-      public void run() {
-        finish();
-      }
-    });
+
+      DebugUtil.i(TAG,"onRetroArchExit");
+      finish();
   }
 
   public int getVolumeCount()
@@ -513,6 +511,20 @@ DebugUtil.i(TAG,"onTick"+millisUntilFinished);
    */
   public native boolean loadState(int stateIndex);
 
+  /**
+   * 设置分辨率
+   */
+  public native void setAspectRatio(int aspectRatioIndex);
+
+  /**
+   * 设置分辨率自定义时，的位置和大小
+   */
+  public native void setCustomX(int x);
+  public native void setCustomY(int y);
+  public native void setCustomWidth(int width);
+  public native void setCustomHeight(int height);
+  public native void setCustomViewPort(int x, int y, int width, int height);
+
   /**
    * 切换渲染路径
    */

app/src/main/java/com/xugame/gameconsole/dialog/gamemenu/GameMenuDialog.java

@@ -180,6 +180,36 @@ public class GameMenuDialog extends BaseDialog
             });
         }
 
+        findViewById(R.id.ratioCoreButton).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mListener != null)
+                    mListener.onSetRatio(0);
+
+                dismiss();
+            }
+        });
+
+        findViewById(R.id.ratioFullscreenButton).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mListener != null)
+                    mListener.onSetRatio(1);
+
+                dismiss();
+            }
+        });
+
+        findViewById(R.id.ratioCustomButton).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (mListener != null)
+                    mListener.onSetRatio(2);
+
+                dismiss();
+            }
+        });
+
         findViewById(R.id.resume_game).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {

app/src/main/java/com/xugame/gameconsole/dialog/gamemenu/GameMenuDialogListener.java

@@ -8,4 +8,6 @@ public interface GameMenuDialogListener {
     boolean onSaveState(int stateIndex);
     boolean onLoadState(int stateIndex);
     void onKeySettingNums(int keys[]);
+
+    void onSetRatio(int type);
 }

app/src/main/java/com/xugame/gameconsole/emulator/RetroArchEmulatorActivity.java

@@ -9,6 +9,7 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.WindowManager;
 
+import com.retroarch.browser.retroactivity.AspectRatio;
 import com.xugame.gameconsole.dialog.gamemenu.GameMenuDialog;
 import com.xugame.gameconsole.dialog.gamemenu.GameMenuDialogListener;
 import com.xugame.gameconsole.preferences.ConfigFile;
@@ -191,6 +192,22 @@ public class RetroArchEmulatorActivity extends RetroActivityCamera {
                 }
                 saveOverrideConfig();
             }
+
+            @Override
+            public void onSetRatio(int type) {
+                switch (type) {
+                    case 0:
+                        setAspectRatio(AspectRatio.ASPECT_RATIO_CORE.getValue());
+                        break;
+                    case 1:
+                        setAspectRatio(AspectRatio.ASPECT_RATIO_FULL.getValue());
+                        break;
+                    case 2:
+                        setAspectRatio(AspectRatio.ASPECT_RATIO_CUSTOM.getValue());
+                        setCustomViewPort(100, 100, 480, 320);
+                        break;
+                }
+            }
         });
         menuDialog.setCanceledOnTouchOutside(true);
         menuDialog.show();

app/src/main/res/layout/dialog_gamemenu_layout.xml

@@ -19,6 +19,24 @@
         android:focusable="false"
         android:text="退出游戏"></Button>
 
+    <Button
+        android:id="@+id/ratioCoreButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Core" />
+
+    <Button
+        android:id="@+id/ratioFullscreenButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Fullscreen" />
+
+    <Button
+        android:id="@+id/ratioCustomButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Custom" />
+
     <RadioGroup
         android:id="@+id/radio_gp_screen"
         android:layout_width="wrap_content"
@@ -199,4 +217,9 @@
         android:layout_marginTop="10px"
         android:text="确定"></Button>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"/>
+
 </LinearLayout>