这个是开源的，然后功能就跟标题描述的一样，软件成品我这里不会发布，但是会把dex核心字节集文件分享出来，方便大家学习，软件原理就是通过HOOK技术截取相机视频流，然后实现虚拟视频的效果，然后微信QQ这些都能用的，仅供学习娱乐。

下面是运行的演示效果视频【仅供娱乐学习】

安卓免root虚拟摄像头，看下这个功能！！！

下面是核心dex字节码， 你可以转JAVA自己分析代码：

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.class Lcom/example/vcam/HookMain$1;

.super Lde/robv/android/xposed/XC_MethodHook;

.source "HookMain.java"

annotations

.annotation system Ldalvik/annotation/EnclosingMethod;

value = Lcom/example/vcam/HookMain;->handleLoadPackage(Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;)V

.end annotation

.annotation system Ldalvik/annotation/InnerClass;

accessFlags = 0x0

name = null

.end annotation

instance fields

.field final synthetic this$0:Lcom/example/vcam/HookMain;

.field final synthetic val$lpparam:Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;

direct methods

.method constructor <init>(Lcom/example/vcam/HookMain;Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;)V

.registers 3

.line 98

iput-object p1, p0, Lcom/example/vcam/HookMain$1;->this$0:Lcom/example/vcam/HookMain;

iput-object p2, p0, Lcom/example/vcam/HookMain$1;->val$lpparam:Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;

invoke-direct {p0}, Lde/robv/android/xposed/XC_MethodHook;-><init>()V

return-void

.end method

virtual methods

.method protected beforeHookedMethod(Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;)V

.registers 6

.line 101

new-instance v0, Ljava/io/File;

new-instance v1, Ljava/lang/StringBuilder;

invoke-direct {v1}, Ljava/lang/StringBuilder;-><init>()V

sget-object v2, Lcom/example/vcam/HookMain;->video_path:Ljava/lang/String;

invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

const-string v2, "virtual.mp4"

invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v1

invoke-direct {v0, v1}, Ljava/io/File;-><init>(Ljava/lang/String;)V

.line 102

invoke-virtual {v0}, Ljava/io/File;->exists()Z

move-result v0

const/4 v1, 0x0

if-eqz v0, :cond_c2

.line 103

new-instance v0, Ljava/io/File;

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

invoke-static {}, Landroid/os/Environment;->getExternalStorageDirectory()Ljava/io/File;

move-result-object v3

invoke-virtual {v3}, Ljava/io/File;->getPath()Ljava/lang/String;

move-result-object v3

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

const-string v3, "/DCIM/Camera1/disable.jpg"

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-direct {v0, v2}, Ljava/io/File;-><init>(Ljava/lang/String;)V

.line 104

invoke-virtual {v0}, Ljava/io/File;->exists()Z

move-result v0

if-eqz v0, :cond_44

return-void

.line 107

:cond_44

sget-boolean v0, Lcom/example/vcam/HookMain;->is_hooked:Z

if-eqz v0, :cond_4b

.line 108

sput-boolean v1, Lcom/example/vcam/HookMain;->is_hooked:Z

return-void

.line 111

:cond_4b

iget-object v0, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->args:[Ljava/lang/Object;

aget-object v0, v0, v1

if-nez v0, :cond_52

return-void

.line 114

:cond_52

iget-object v0, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->args:[Ljava/lang/Object;

aget-object v0, v0, v1

sget-object v2, Lcom/example/vcam/HookMain;->c1_fake_texture:Landroid/graphics/SurfaceTexture;

invoke-virtual {v0, v2}, Ljava/lang/Object;->equals(Ljava/lang/Object;)Z

move-result v0

if-eqz v0, :cond_5f

return-void

.line 117

:cond_5f

sget-object v0, Lcom/example/vcam/HookMain;->origin_preview_camera:Landroid/hardware/Camera;

if-eqz v0, :cond_8e

sget-object v0, Lcom/example/vcam/HookMain;->origin_preview_camera:Landroid/hardware/Camera;

iget-object v2, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->thisObject:Ljava/lang/Object;

invoke-virtual {v0, v2}, Ljava/lang/Object;->equals(Ljava/lang/Object;)Z

move-result v0

if-eqz v0, :cond_8e

.line 118

iget-object p1, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->args:[Ljava/lang/Object;

sget-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

aput-object v0, p1, v1

.line 119

new-instance p1, Ljava/lang/StringBuilder;

invoke-direct {p1}, Ljava/lang/StringBuilder;-><init>()V

const-string v0, "【VCAM】发现重复"

invoke-virtual {p1, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

sget-object v0, Lcom/example/vcam/HookMain;->origin_preview_camera:Landroid/hardware/Camera;

invoke-virtual {v0}, Ljava/lang/Object;->toString()Ljava/lang/String;

move-result-object v0

invoke-virtual {p1, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {p1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object p1

invoke-static {p1}, Lde/robv/android/xposed/XposedBridge;->log(Ljava/lang/String;)V

return-void

:cond_8e

const-string v0, "【VCAM】创建预览"

.line 122

invoke-static {v0}, Lde/robv/android/xposed/XposedBridge;->log(Ljava/lang/String;)V

.line 125

iget-object v0, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->thisObject:Ljava/lang/Object;

check-cast v0, Landroid/hardware/Camera;

sput-object v0, Lcom/example/vcam/HookMain;->origin_preview_camera:Landroid/hardware/Camera;

.line 126

iget-object v0, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->args:[Ljava/lang/Object;

aget-object v0, v0, v1

check-cast v0, Landroid/graphics/SurfaceTexture;

sput-object v0, Lcom/example/vcam/HookMain;->mSurfacetexture:Landroid/graphics/SurfaceTexture;

.line 127

sget-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

const/16 v2, 0xa

if-nez v0, :cond_af

.line 128

new-instance v0, Landroid/graphics/SurfaceTexture;

invoke-direct {v0, v2}, Landroid/graphics/SurfaceTexture;-><init>(I)V

sput-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

goto :goto_bb

.line 130

:cond_af

sget-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

invoke-virtual {v0}, Landroid/graphics/SurfaceTexture;->release()V

.line 131

new-instance v0, Landroid/graphics/SurfaceTexture;

invoke-direct {v0, v2}, Landroid/graphics/SurfaceTexture;-><init>(I)V

sput-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

.line 133

:goto_bb

iget-object p1, p1, Lde/robv/android/xposed/XC_MethodHook$MethodHookParam;->args:[Ljava/lang/Object;

sget-object v0, Lcom/example/vcam/HookMain;->fake_SurfaceTexture:Landroid/graphics/SurfaceTexture;

aput-object v0, p1, v1

goto :goto_13a

.line 135

:cond_c2

new-instance p1, Ljava/io/File;

new-instance v0, Ljava/lang/StringBuilder;

invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

invoke-static {}, Landroid/os/Environment;->getExternalStorageDirectory()Ljava/io/File;

move-result-object v2

invoke-virtual {v2}, Ljava/io/File;->getPath()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

const-string v2, "/DCIM/Camera1/no_toast.jpg"

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v0

invoke-direct {p1, v0}, Ljava/io/File;-><init>(Ljava/lang/String;)V

.line 136

iget-object v0, p0, Lcom/example/vcam/HookMain$1;->this$0:Lcom/example/vcam/HookMain;

invoke-virtual {p1}, Ljava/io/File;->exists()Z

move-result p1

xor-int/lit8 p1, p1, 0x1

iput-boolean p1, v0, Lcom/example/vcam/HookMain;->need_to_show_toast:Z

.line 137

iget-object p1, p0, Lcom/example/vcam/HookMain$1;->this$0:Lcom/example/vcam/HookMain;

iget-object p1, p1, Lcom/example/vcam/HookMain;->toast_content:Landroid/content/Context;

if-eqz p1, :cond_13a

iget-object p1, p0, Lcom/example/vcam/HookMain$1;->this$0:Lcom/example/vcam/HookMain;

iget-boolean p1, p1, Lcom/example/vcam/HookMain;->need_to_show_toast:Z

if-eqz p1, :cond_13a

.line 139

:try_start_f6

iget-object p1, p0, Lcom/example/vcam/HookMain$1;->this$0:Lcom/example/vcam/HookMain;

iget-object p1, p1, Lcom/example/vcam/HookMain;->toast_content:Landroid/content/Context;

new-instance v0, Ljava/lang/StringBuilder;

invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

const-string v2, "不存在替换视频\n"

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

iget-object v2, p0, Lcom/example/vcam/HookMain$1;->val$lpparam:Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;

iget-object v2, v2, Lde/robv/android/xposed/callbacks/XC_LoadPackage$LoadPackageParam;->packageName:Ljava/lang/String;

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

const-string v2, "当前路径："

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

sget-object v2, Lcom/example/vcam/HookMain;->video_path:Ljava/lang/String;

invoke-virtual {v0, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v0

invoke-static {p1, v0, v1}, Landroid/widget/Toast;->makeText(Landroid/content/Context;Ljava/lang/CharSequence;I)Landroid/widget/Toast;

move-result-object p1

invoke-virtual {p1}, Landroid/widget/Toast;->show()V

:try_end_120

.catch Ljava/lang/Exception; {:try_start_f6 .. :try_end_120} :catch_121

goto :goto_13a

:catch_121

move-exception p1

.line 141

new-instance v0, Ljava/lang/StringBuilder;

invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

const-string v1, "【hook】[toast]"

invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {p1}, Ljava/lang/Exception;->toString()Ljava/lang/String;

move-result-object p1

invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object p1

invoke-static {p1}, Lde/robv/android/xposed/XposedBridge;->log(Ljava/lang/String;)V

:cond_13a

:goto_13a

return-void

.end method

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