Android surface buffer. android surfaceview can't work.
Android surface buffer 168 380-380/com. OpenGL ES does it by implementing GLSurfaceView. The moment you call unlockCanvasAndPost, the contents of the surface buffer are pushed out to the screen. 0. To spare you from the headache of going through Buffer Queue sources, I prepared this simple and easy-to-follow example of how to do it properly on any Android that supports TextureView Hello: As we know, We can enable single-buffer attribute with egl like this: const EGLint windowAttribs[] = { EGL_RENDER_BUFFER, EGL_SINGLE_BUFFER, Surface, canvas, and SurfaceHolder. lockCanvas gives you is not persistent. Saved searches Use saved searches to filter your results more quickly This sounds more like a problem with the way data is being fed into the decoder, e. android: how to Update a SurfaceView from the ndk by updating the Surface buffer? Hot Network Questions For example, if a producer's buffer format specifies RGBA_8888 pixels, and the producer indicates that the buffer will be accessed from software (meaning an app will touch pixels on the CPU), Gralloc creates a buffer with 4 bytes per pixel in R-G-B-A order. The pixel format for the surface I am rendering on is RGBA. The key to understanding this stuff is to recognize that Surface and EGLSurface are related but independent concepts. YUV_420_888) holder. Plane will place R(ed) channel at first, and then G(reen) channel and so on. How do the frames captured by the camera get from the But many devices supports only H264 decoding. ANativeWindow * ANativeWindow_fromSurface( JNIEnv *env, jobject surface ) But it look like I need to call such function from java to catch env and surface. In android 4. java By default, the EGL surface for FBOs will have the same size as the SurfaceTexture they were created from. I'm getting different behavior from the two different formats I'd like to play. ASurfaceControl combines a surface and a SurfaceControl into one transaction package that is sent to SurfaceFlinger Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Build AI-powered Android apps with Gemini APIs and more. . g. Update SurfaceView by passing though some variables to this Class. I am using a GLSurfaceView with a custom renderer. When rendering onto a surface, the result ends up in a Hi i got this error message queueBuffer: error queuing buffer to SurfaceTexture, -32 after trying to separate socket into service and peer to peer into activity, here the logs Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company surfaceChanged() is called when the surface characteristics change, not when the surface contents change. The PixelBuffer backs the GL buffer. The google doc says the right thingsince you re locking the pixels of the surface and there are two buffers because android uses tripple or double buffering depending on the speed of the drawing calls it can draw on one frame one buffer with whatever content you have filled it in drawing calls before and on the next it could draw another buffer with another content Build AI-powered Android apps with Gemini APIs and more. 1 ,here is a link with more infomation E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xab7519c0 Share Improve this answer Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Short answer: no. 961: INFO/Overlay(1103): 8 buffers allocated 4 requested 10 Build AI-powered Android apps with Gemini APIs and more. It has a producer-consumer interface, and the consumer can live in a different process -- buffers are sent by handle with Binder IPC. Handle onto a raw buffer that is being managed by the screen compositor. webrtc. The latter is part of the UI View hierarchy, and may only be drawn from the UI thread (via onDraw()), but will only be called if the View system thinks there's work to Android relies on the standard frame buffer device (/dev/fb0 or /dev/graphics/fb0) and driver as described in the linux/fb. I learned that Surface holds raw buffer. SurfaceFlinger or HWC typically handle the buffer; but because we only need to read from the buffer, there's no need to wait for exclusive access. The BufferQueue for a display surface is typically configured for triple-buffering. This But on "cheap" tablett", Android 9, 64 bits and 32 Bits, it stays on splash screen. It's happening becasue the android graphics has a buffer surface and a visible surface and to make sure that they are always available they simply alternate. I release the player and instantiate a new one. VideoRenderer. I420Frame arrays to PreviewCallback. Android 10 adds ASurfaceControl, which is another way that SurfaceFlinger can accept buffers. * * Available since API level 31. Share. updateTexImage() in onDrawFrame, mSTexture will be updated by one of many mediacodec output buffers released before, but I want to know the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xabfb40d0 09-23 22:55:12. When the bootanim redraws itself it is visible but then it quickly flickers back to the "A N D R O I D" screen. 634 4417-4431/? E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xabfb4a00 09-23 22:55:15. Note that the SurfaceView and its associated Surface are two different things, and each can/must be assigned a size. The SurfaceTexture class is a melding of the two: when you submit a buffer, it turns into a GL texture. encoder. I am having a problem with my Android system. Common consumer I can't get the texture tied to a SurfaceTexture to display in Unity. We can promote embedded videos to overlays. As I understand it an Android Surface represents the producer side of a buffer queue so it may be multiple buffers. Textures are GL concepts. getHolder(). I call this function in a separate Java decoder thread, which returns a new frame of data to be decoded by MediaCodec. Summary. 0. android_platform_cts has an example or two of how to do this. Been trying to to implement code from new book, Mastering OpenCV with Practical Computer Vision Projects. I saw the webrtc library for android. And I want to use this buffer and convert it to jpeg images. The MediaCodec color formats are defined by the MediaCodecInfo. I can post tasks and get tasks from the server but I can't delete because I get this error: E/Surface: PixelBuffer is the low level buffer used when you provide the Camera with a Texture instead of a Surface. 566 897-944/com. PreviewCallback) is called. mediacodec released many times, why onFrameAvailable and onDrawFrame only be called once?; By calling mSTexture. But since Android 2. Ask Question h=144 10-25 16:56:26. Instead, they are communicating with the system process named "Surface Flinger", which is Using the . 3. screenshot(width, height), The application has READ_FRAME_BUFFER permission, and is signed with platform certificate, and it has a sharedUserId of "android. addCallback(this); Then we start decode the video feed in (we Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company E/Surface: getSlotFromBufferLocked: unknown buffer: 0xaefef440 They have fixed the issue in Android 6. android / platform / frameworks / native / refs/heads/main / . I set up a native read_frame function that parses video frames using FFmpeg. Similarly, eglCreateWindowSurface() creates a GL context I need access to a raw surface buffer (app surface, not device framebuffer) where I can draw bits with memory moving instructions from a native thread. Surface. onPreviewFrame byte[] This way gives VideoFrame as black, seems not working as intended. The size of the buffer is guaranteed to be bigger than (width * stride * 4) bytes. No inserts the data in mysql, the app does not have errors and orange single message log is: E / Surface: getSlotFromBufferLocked: unknown buffer: 0xab7519c0 I hope I am using a surface texture as output of mediacodec, see some log below, 2 questions:. cpp in Android-4. I'm looking for a way to draw i am using android surface view to display images. android. A Canvas holds the drawing. The Surface is the actual memory buffer which will hold the output of the camera, and thus setting its size dictates the size of the actual image you will get from each frame. It was very straight forward to render this way-- just pass MediaCodec the Hello: As we know, We can enable single-buffer attribute with egl like this: const EGLint windowAttribs[] = { EGL_RENDER_BUFFER, EGL_SINGLE_BUFFER, EGL_PROTECTED_CONTENT_EXT, isProtect A Surface is a pool of graphics buffers with an associated queue. Surface object in Java, and can be converted both ways. SurfaceHolder. The problem is that whatever I draw on this buffer is restricted to less than 25% of the screen. That's how the encoder gives you a MediaFormat with csd-0/csd-1 keys, needed by MediaMuxer#addTrack(). example. Bug 58834 is for the VP8 software encoder; those patches shouldn't be needed for the hardware AVC codec. I get surface buffer errors, the screen goes black but the game loop resumes. eglCreateWindowSurface() takes a window object as an argument, which on Android is a surface. So my doubt it, as there is limited number of framebuffer like 3, how each surface's data is mapped to to final framebuffer which will be Need to help How play video on Surface(OpenGL) in Android? I tried playing video in mySurfaceView extends SurfaceView with help method setSurface() in MediaPlayer. RGBA_8888, so the buffer of Image. 783 20283 20296 D HaskellActivity: jsaddle: 03-12 16:20:03. I am trying to get surface flinger events on LogCat. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have an Android USB Camera application which will pump Camera frames to FrameAvaliable() method. 1 which was released last year in December. how to convert yuv to rgb using opengl es and display it. createBitmap(getWidth(), It is the C counterpart of the android. AndroidStudio E/Surface: getSlotFromBufferLocked: unknown buffer: 0xf3d96ad0. refer to SimplePlayer. Update 4: Based on the pipeline in update 1 (surface->external texture via surface texture -> fbo -> texture 2d) I know the SurfaceTexture isn't properly converting its SurfaceFlinger is an Android system service, responsible for compositing all the application and system surfaces into a single buffer that is finally to be displayed by display controller. * * \param crop The bounds of the crop to apply. surface, 1) imageWriter. Reads from a framebuffer, not a texture (so one must render the VK_KHR_16bit_storage VK_KHR_8bit_storage VK_KHR_acceleration_structure VK_KHR_android_surface VK_KHR_bind_memory2 VK_KHR_buffer_device_address VK_KHR_calibrated_timestamps VK_KHR_compute_shader_derivatives VK_KHR_cooperative_matrix VK_KHR_copy_commands2 VK_KHR_create_renderpass2 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The steps from Android Developers Group say that you need a buffer-canvas, to which all the renders are drawn onto. h&. These tasks are stored on a server. CodecCapabilities class. LogCat. Images drawn to the Surface will be made available to the SurfaceTexture, which can attach them to an OpenGL ES texture via updateTexImage(). If you want to update the canvas incrementally, you should keep an "off-screen" canvas backed by a Bitmap that you The data buffer of Image. Flickering while using surface view. uid. This involves queueBuffer() passing the data to SurfaceFlinger's BufferQueue, then waits for next free buffer in dequeueBuffer(). Xamarin As mentioned in HardwareBuffer documentation:. 3, there’re no official NDK APIs to render pixels efficiently. ) OpenGL Comparison. I do it like above because if I alternatively remove the else clause and don't queue the empty input buffer, the input buffer never becomes available again. Callback Then we created a SurfaceView and add the Callback: mySurfaveView. Every time you call lockCanvas you need to redraw the picture from scratch. WindowManager then sends the surface to the app, but keeps the SurfaceControl to manipulate the appearance of the app on the screen. New to Android and OpenCV. newInstance(surfaceHolder. It works fine in 4. 4 source code. Views are not attached to the Canvas nor the Surface. I am decoding H. The code underlying Surface (called BufferQueue) should be capable (as of Lollipop) of multiplexing, but I'm not aware of an API in Lollipop that exposes the capability to applications. Now I want to display that decoded stream using surface view (it was done using openGL but it is very slow). 904 4417-4431/? E/Surface﹕ getSlotFromBufferLocked: unknown buffer: 0xabfb60c0 Android OpenGL Surface crashing on device orientation change. )When you call updateTexImage(), if a new frame of data is available, the buffer at the head is dropped and the next one in the queue becomes current. For each format available from the camera, there is Yes, that's the primary aim. 29 BUG Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog I'm streaming video to my Motorola Droid 1 using the method from the android tutorial here. In short: Create native JNI method in some helper class to call it from Java/Kotlin; Pass your HardwareBuffer to this method as parameter; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Changes in incoming buffer sizes are expected and should be handled gracefully by the underlying BufferQueue mechanism (this is why SurfaceView has a "surface changed" callback that passes width/height), but there's a lot of moving parts, and it's possible something is broken along the way. > What Android Surface does seems to be: draw in buffer A and flip it on > the screen, then in next cycle, draw buffer B and flip it on the > screen. Android Retrofit no response. The RAW Buffer for the image looks like this and it has 1536 elements which is the right size for a YUV image since the Surface attached to the encoder is 32 by 32. 3 Gingerbread, the ANativeWindow API is available, it’s very fast and easy to use. MediaCodec decoding to I'm trying to capture Android's views as bitmaps and save them as . I also thought about other memory leaks and analysed it with LeakCanary. queueInputImage(image) Important! If you are using a SurfaceView, then you should set the format and buffer size before drawing: holder. android. Surface: Class Overview. EDIT 1: I have included the code sample of Bytedeco's RecordActivity. For more information, see the NDK documentation for AHardwareBuffer. I’m using buffer "A" and "B" here instead The trick is that a Surface isn't a buffer, it's an interface to a queue of buffers. This is all hidden. If no crop is specified and the surface has no * buffer, the surface bounds is only constrained by the size of its parent bounds. They are used with image capture and hardware acceleration devices. As I understand, Android render works roughly as following: my app produces the buffer with data during the frame. This document describes the general Android graphic stack and UI features I'm trying to encode a movie using MediaCodec and Surfaces (pixel buffer mode works, but performance is not good enough). It uses a seperate audio and video threads to get frames in real-time. 1+ (docs, example, bigflake example). Android camera preview using HardwareBuffers implemented in C++ with Vulkan and OpenGL rendering backends - kiryldz/android-hardware-buffer-camera Build AI-powered Android apps with Gemini APIs and more. 2, but return null in 4. If it helps to see source code, start in updateTexImage(). 1. LISTY E/Surface: getSlotFromBufferLocked: unknown buffer: 0xa9fb8d90 My team is doing an Android project where we use MediaCodec to decode the video feed and render the feed onto a Surface. Then do what you think will cause the problem and then check the This question has info how to convert VideoFrame to byte[] Android org. If your real question is "where is it documented that Camera requires SURFACE_TYPE_PUSH_BUFFERS", I suspect that is undocumented. 2, there's a hidden API in com. Another requir A great way to check to see where leaks are coming from is , if you are in Eclipse, Window->Open Perspecive -> DDMS then select the running process from the process selection and use the allocation tracker. Improve this answer. SurfaceView class in order to draw 3D content. Depending on the consumer, images submitted to ANativeWindow can be shown on the display or sent to other consumers, such as video encoders. As for decoding you can A surface is a buffer. Surface instance is shared between Fragment and camera logic classes: but the app should work on the particular generic Chinese tablet with Android 6 The new default buffer size will take effect the next time the image producer requests a buffer to fill. On most Here is an answer that references the javaCV library's RecordActivity. java as suggested. height are very close to the resolution of the screen itself. nativeLockCanvas(Native Method) The "encoder output format changed" message is normal in Android 4. it's used to decode an media file and output decoded video into surface. Bitmap buffCanvasBitmap; Canvas buffCanvas; // Creating bitmap with attaching it to the buffer-canvas, it means that all the changes // done with the canvas are captured into the attached bitmap tempCanvasBitmap = Bitmap. The image format we used to create ImageReader is PixelFormat. I have done till this. */ void ASurfaceTransaction_setCrop (ASurfaceTransaction * _Nonnull transaction, I want to write a native application in Android for testing surfaceflinger. Using YUV420p color format I expect input buffers from MediaCodec to be of size resWidth * resHeight * 1. Yes, it is certainly possible. Something like SetDIBits or SetDIBitsToDevice from Windows API but on Android device. Android canvas multiple draws causes flickering. I suspect that this is due to some setting of SurfaceFlinger or To write an "opaque" surface you can allocate a gralloc buffer and set the color format manually since "opaque" just means "whatever the encoder feels like", you have some freedom of choice, but bear in mind that GPUs may not handle all formats, and some formats may be handled significantly more efficiently than others. Objective is to determine number of unique frames painted each second. SurfaceTexture receives a buffer of graphics data and essentially wraps it up as an "external" texture. Android app crash: Surface : getSlotFromBufferLocked: unknown buffer: 0xb812f398 #369. It shouldn’t be null. 2. 256 is used internally, and generally doesn't mean that you have a buffer of JPEG data. If I try turning off Host GPU in the emulator, the app will instead crash when closing the activity. Graphics are a big topic in the Android platform, containing java/jni graphic framework and 2d/3d graphic engines (skia, OpenGL-ES, renderscript). video. view. When I decode a video to a surface I want to save the frames i want as bitmap/jpeg files. The Surface is on a completely separate layer from all of the View UI elements. It provides a mechanism to create a VkSurfaceKHR object (defined by the VK_KHR_surface extension) that refers to an ANativeWindow, Android’s native surface type. The API reference mentions that "the Surface must be rendered with a hardware-accelerated API, such as OpenGL ES". at android. Mono for Android App crashes on start after clears data in app settings. Note the name of the class ("GLConsumer") is a more accurate description of the function than "SurfaceTexture": it consumes frames of graphic data and makes them available to GLES. 3 The real problem comes when I Finish() the activity or perform OnBackPressed(). 782 20283 20296 D HaskellActivity: jsaddle: -kb<size> Sets the stack chunk buffer size (default 1k) 03-12 16:20:03. If you specify a dirty region when locking the surface, it copies the nondirty pixels from the previous buffer. In order to convert this buffer to bitmap, we need to create bitmap like this Using the buffer, I do a memcpy into the buffer. Window was destroyed then re-created when the SurfaceView was adding, and the Window's pixel format was changed mean while, that guided me to the answer, the pixel format of the SurfaceView and the Activity was different so Window Manager forced the re-created. The Surface is usually double-buffered, but can be triple-buffered. 5. Calling updateTexImage() is necessary to see successive frames; there is no [android-porting] SurfaceFlinger, Frame buffer device, Overlays. Debugging, before any Delphi line code, it fires this exception : Android : EGL PBuffer Surface Errcode : 12297 Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. system". On Android platform, we must subclass android. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am trying to screen cast my android device screen to a web browser using projection API and Webrtc. android - cannot send data to database of web Requested format is:0x22 2023-05-29 18:04:33. In Android 5. Ask Question Asked 10 years, 9 months ago. cpp. java example. Surface, which works perfectly by calling Surface. You can use AImageReader_newWithUsage() The VK_KHR_android_surface extension is an instance extension. 264 video data received through a websocket with an async Android MediaCodec. The window is tied to a Surface and the ViewRoot asks the Surface for a Canvas that is then used by the Views to draw onto. SurfaceView drawText flickering. If instead, a producer specifies its buffer will be only accessed from hardware and as a GLES texture, The decoder's/encoder's output/input Surface respectively is a specially configured (either physically contiguous or reserved etc) piece of memory which specialised hardwares (for example, GPUs, hardware (accelerated) codecs) or software modules can use in a fashion best suited for performance needs (by using features such as hardware acceleration, DMA etc). So I have a software decoder for decoding VP8 video streams which decodes data and puts into a global buffer. I'm . h kernel header file. Build AI-powered Android apps with Gemini APIs and more. after data is ready, it performs eglSwapBuffers. For example, it can be used to convey the color space of the image data in the buffer, or it can be As you can find in Android documentation about Camera class : The buffer queue will be cleared if this method [setPreviewCallbackWithBuffer] is called with a null callback, setPreviewCallback(Camera. You can use the input surface of a codec for ecoding video frames, you can get this surface using createInputSurface() then (if you don't use NDK) you can get the canvas from the surface and draw frames on it or you can use NDK and copy frame data to the surface buffer, both of this approaches in the result will give you encoded frame data. Ryan Thu, 25 Feb 2010 18:25:08 -0800. Closed aveltras opened this issue chunk size (default 32k) 03-12 16:20:03. Get started Core areas; Get the samples and docs for the features you need. Samples Try Quick Guidesᵇᵉᵗᵃ User interfaces I have SurfaceView, SurfaceHolder and Surface objects. The data retrieved from this method is a valid one (Confirmed by saving into raw file as image). How would I access a Surface that corresponds to the device's screen? Is that what Surfaces even do? I looked around and found that I can get a surface view by calling SurfaceView surfaceView = new SurfaceView(context) (where I can access the context just fine). 4, no Update Android SurfaceView on-the-fly with new elements. / libs / gui / Surface. You can actually create a "fake" texure and force the Camera API to drump the raw data into the PixelBuffer. e. The problem is that the codec fails to start. Viewed 8k times <DequeueBuffer:606>: dequeue native buffer fail: Out of memory, buffer=0x0, handle=0x0 W/Adreno-EGL( 279): <qeglDrvAPI_eglSwapBuffers:3692>: EGL_BAD_SURFACE same static void callback_with_buffer (uint8 *buffer, uint size) { } What should I do to memcpy the JNI buffer to the Java inputBuffers[inIndex] especially with the constraint that both thread are not really synchronized? Build AI-powered Android apps with Gemini APIs and more. two separate shaders are applied in succession). Said to be slow. Projection API renders its output to a Surface and returns a virtualDisplay. (For example, This seems odd to me because my unlock is only performed when the lock was successful and I'm not locking the surface from the Java side at all. While there is a queue of buffers involved in the communication between the producer and the consumer, it's not really accurate to describe the Surface as "a buffer". The function which probably would give me surface is. Reading logcat messages from main buffer (adb logcat) (ii) Reading logcat messages from event buffer (adb logcat -b events) Surface flinger events can be dynamically enabled by using following commands on the The Surface attached to it (usually by using the Surface constructor that takes a SurfaceTexture as an argument) is the producer side. 3. I am working on an effect that requires dual-pass rendering (i. The ANativeWindow represents the producer endpoint of any buffer queue, regardless of consumer endpoint. they have made it to receive input only from device camera. Since the surface's buffer is shared Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Build AI-powered Android apps with Gemini APIs and more. Modified 10 years, 9 months ago. There is an example app that uses TextureView in the Android SDK here, although it uses the SurfaceTexture for camera video rather than OpenGL ES rendering: sources\android-17\com\android\test\hwui\GLTextureViewActivity. It is running on a custom platform and when I boot up the device the screen flickers between the bootanim and the console "A N D R O I D" screen. In another word, surfaceView cost more resources. avc gives me more than that (no matter what Sign in. Are you able to draw on the surface with a Canvas from Java code? There are various things that can prevent a SurfaceView surface from being visible (like setting a background on the View), and it would be good to rule them out. android surfaceview can't work. The only option Android Java coders currently really have. blob: 66e7ddd9154d95548b3e0cf76e69b3e95df44d27 [] [] [] [] Android kernel file system support; Extend the kernel with eBPF; Single producer, multiple consumer camera buffer transport Stay organized with collections Save and categorize content based on your preferences. Hardware Overlays: The SurfaceFlinger punches a hole in the window surface in order to let the hardware overlay compose its frame data directly to the screen. However, every time I try to call eglSwapBuffers(), it fails with EGL_BAD_S This is common issue with android surface view. If you can identify the source of the CPU load, or determine that Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. java, it must be a SurfaceView subclass. The buffers are passed around by reference; when you unlockCanvasAndPost() The Android tool for analyzing such issues is systrace, available in Android 4. – fadden Commented Mar 19, 2014 at 20:44 i am working on an android app which uses material-intro dependencies for intro slides, but when the slide complete and try to switch from the Slide(MaterialintroActivity) to my main activity the app crashes. Samples Try Quick Guidesᵇᵉᵗᵃ User interfaces Background work All core areas ⤵️ Tools and workflow; Use the IDE to write and build your app, or create your own pipeline. 0 * (SurfaceFlinger) to concurrently access this surface's buffer. I ended up solving this issue by using the Java low level APIs instead. Longer answer: the Surface encapsulates a queue of buffers. h is provided, it’s still too slow and not robust, I don’t recommend it. SurfaceTexture has been abandoned / Could not dequeue gralloc buffer / flushSurface() fail. The getDrawingCache() approach works on the View layer only, so it doesn't capture anything on the Surface. How can I do that? * Transfer ownership of buffer with a color space and present it on the Surface. This function locks the buffer for the client, which means the caller has the exclusive access to the buffer until it Thanks for the quick reply, my intention for using MediaCodec is to get the YUV data from the Ar SceneView's surface for video streaming. You use SURFACE_TYPE_PUSH_BUFFERS for camera preview and video ImageWriter. The caller must redraw the entire dirty region as Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The surface lock/unlock code keeps a reference to the previously rendered buffer. WindowManager provides SurfaceFlinger with buffers and window metadata, which Create Surface from a SurfaceTexture. i think it is similar with your scenario. The Canvas that Surface. A surface is an interface for a producer to exchange buffers with a consumer. opencv_example E/NativeCodec: Unknow surface buffer format: 34 Thats why the image content is not transfered to ANativeWindow_Buffer . Related. The activity implements. You shouldn't be getting junk textures from I'm developing an app that show, save and delete tasks. If I try to unlock it then from JNI I get: Surface::unlockAndPost failed, no locked buffer. I'm using MediaCodec to encode bitmaps and MediaMuxer to mux them into . – > back buffer into the front buffer. SurfaceHolder interfaces enable apps to edit and control surfaces. setFixedSize(imageWidth, imageHeight) Surface is an Android Surface (link to API, link to arch. I have tried to use the ImageReader class in a similar manner by mirroring the SceneView's surface to it and acquiring the latest image when it is available (using setOnImageAvailableListener), but it's performance seems very poor. configure function, I passed a surface created through surfaceComposerClient. 5 but Qualcomm's OMX. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company * used to determine the bounds of the surface. surfaceView has dedicate surface buffer while all the view shares one surface buffer that is allocated by ViewRoot. For Android versions prior to Android 2. And there could be multiple surafce created at a time in android application. you're overwriting a buffer of H. Obtains one buffer from the given Android Surface. Android - SurfaceView. surfaceView cannot be hardware accelerated (as of JB4. Keep in mind that the dimensions of buffer. * The supported color spaces are SRGB and Display P3, other color spaces will be * treated as SRGB. But not getting an idea to do it using surfaceView. I'm reusing the same surface among video play. Is there any simple program that shows how to create surface, register buffers and post buffers on Surfaceflinger. This function may choose to expand the dirty rectangle if for example the surface has been resized or if the previous contents of the surface were not available. Frames sent to SurfaceView's Surface aren't dropped, so your releaseOutputBuffer(, true) will block if you attempt to feed it frames faster than the device refresh rate. A surface produces a buffer queue that is often consumed by SurfaceFlinger. mp4 file. This question is converting to webRtc VideoFrame from surface Converting a Bitmap to a WebRTC VideoFrame To import memory created outside of the current Vulkan instance from an Android hardware buffer, add a VkImportAndroidHardwareBufferInfoANDROID structure to the pNext Bear in mind that SurfaceViews have two parts: the Surface part, and the View part. width and buffer. In Android, how to pass a predefined Surface to MediaCodec for encoding? 4. 2) while 95% operations on normal View are HW accelerated using openGL ES. But when I looked for how to do that with a Surface, it needs a SurfaceTexture, which in turn Android: Unable to clear initial draw to SurfaceView. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company What is "this"? Here is the documentation for SurfaceView, SurfaceHolder, SURFACE_TYPE_PUSH_BUFFERS, and Camera. I don't want to draw on the screen and just want to save the content of the SurfaceTexture as an image file. While the * application is still required to issue a present request * (see {@link #unlockCanvasAndPost(Canvas)}) to the compositor when an update is required, * the compositor may trigger an update at any time. It also opens the possibility of using overlays for tiles. Let's zoom in above statement. If Surface is unable to restore the previous "front" buffer it will expand the dirty rect to cover the entire screen. Which means that if you draw on one frame it won't be there the next unless you draw it on every frame. I guess there are several ways to do it: via OpenGL|ES, via Java Build AI-powered Android apps with Gemini APIs and more. The solution is probably very easy but lack of knowledge about ndk it's very time consuming to do even some such simple like this A full description of the various mechanisms can be found in the Android Graphics Architecture document. 264 data that is still being read from. Plane is not exactly the same as data buffer needed by Bitmap: 1. 0 and 4. There's a set of these eglCreate*Surface APIs to create surfaces in Android, I understand that API like eglCreatePbufferSurface create a backing buffer which can be rendered with GL calls, but I can't wrap my head around this one, eglCreateWindowSurface(EGLDisplay display, EGLConfig cfg, Object window, ), if I pass a Surface as the window, how could the when Surface is created, there is a buffer associated with it, which is used to hold all canvas data related to this surface. You have to use AHardwareBuffer C language functions (using NDK) to access pixels of HardwareBuffer. A SurfaceView has two parts, the Surface and the View. A surface is the producer side of a BufferQueue. The camera is only working because I'm not writing to surface view (at least that's my understanding). When the SurfaceTexture is displayed the second time, it display the old Texture from last video until the player begin to play and fill the Surface with black. The confusion here is likely because you're looking at constants in the ImageFormat class, but those only apply to camera output. For comparison, in OpenGL case an Android Surface is constructed and used like so EDIT 2018-05-23: This is now possible using the VK_ANDROID_external_memory_android_hardware_buffer extension and the extensions it depends on. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Android MediaCodec: EGL_BAD_SURFACE, eglSwapBuffers: EGL error: 0x300d. Android MediaPlayer delayed surface draw causes video to be out of sync. For Canvas this will be the next time Surface. 783 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company This was a bug and has been fixed in android 6. mp4. (Edit: the system is now explained in some detail here. I'm using Exoplayer and an GL SurfaceTexture (from a TextureView) to display a video. If it's double-buffered, and you draw 1000 circles, one buffer will have all of the even-numbered circles, and one buffer will have all of the odd-numbered circles. Calling the eglCreateWindowSurface() function creates EGL window surfaces. qcom. The limit on the number of overlays, depending on the device, might end up meaning that the framework itself has to fallback to GPU composition but at least the decision can be deferred until the end of the pipeline in the framework. SurfaceFlinger accepts buffers, composes buffers, and sends buffers to the display. SurfaceTexture mTexture = new The EGLSurface can be an off-screen buffer allocated by EGL, called a pbuffer, or a window allocated by the operating system. Though an android/bitmap. Updating WITHOUT clearing the screen. My question is, why does the buffer only cover a small portion of the screen? I have a problem with my app. MediaCodec decoding to buffer does not work while decoding to surface works. is there any examples to convert yuv to rgb in android native code. To implement our VulkanSurfaceView. naive. 0 to 4. setFormat(ImageFormat. For a detailled anwser, you can read this whole discussion, really interesting. Boot the app but DO NOT touch the app before you start the allocation tracker. lockCanvas is called. i have a yuv frame buffer decoded from ffmpeg. The information about the buffer (buffer address, size, stride, etc) is reported via the `ANativeWindow_Buffer` struct. PreviewCallback) is called, or setOneShotPreviewCallback(Camera. Surfaces are queues of graphics buffers that are totally independent of GL. As the result, the content visible on the screen comes from > buffer A, B, A, B, A, . MediaCodec::createInputSurface() returns an Android Surface. 07-26 12:42:19. The buffer queue has a producer-consumer API, and it can have only one producer.
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