在视频完成时从表面视图清除视频帧 [英] Clear video frame from surfaceview on video complete

问题描述

我创建了一个媒体播放器，可以在表面视图上播放视频.视频完成后，视频的最后一帧仍保留在表面上.我想从表面移除视频帧，因为经过一段时间的延迟，另一个视频开始了.

I have created a media player which plays video on the surface view. After completion of video the last frame of the video remains on the surface. I want to remove the video frame from the surface because after some delay another video starts.

视频的流程是:

现在:表面上的视频 -> 表面上的最后一个视频帧 -> 表面上的另一个视频.

但是需要的流程是:

要求:表面上的视频 -> 表面清晰(黑色)-> 表面上的另一个视频.

谁能帮忙解决这个问题.

can anyone help to solve this problem.

谢谢伊山耆那

推荐答案

基于 Fadden 的回答和 Andreimarinescu 的问题，这里是 API 16 及以下版本:

Building on Fadden's answer, and Andreimarinescu's question, here is a version for API 16 and below:

private void clearSurface(Surface surface) {
    EGL10 egl = (EGL10) EGLContext.getEGL();
    EGLDisplay display = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
    egl.eglInitialize(display, null);

    int[] attribList = {
            EGL10.EGL_RED_SIZE, 8,
            EGL10.EGL_GREEN_SIZE, 8,
            EGL10.EGL_BLUE_SIZE, 8,
            EGL10.EGL_ALPHA_SIZE, 8,
            EGL10.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT,
            EGL10.EGL_NONE, 0,      // placeholder for recordable [@-3]
            EGL10.EGL_NONE
    };
    EGLConfig[] configs = new EGLConfig[1];
    int[] numConfigs = new int[1];
    egl.eglChooseConfig(display, attribList, configs, configs.length, numConfigs);
    EGLConfig config = configs[0];
    EGLContext context = egl.eglCreateContext(display, config, EGL10.EGL_NO_CONTEXT, new int[]{
            EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
            EGL10.EGL_NONE
    });
    EGLSurface eglSurface = egl.eglCreateWindowSurface(display, config, surface,
            new int[]{
                    EGL14.EGL_NONE
            });

    egl.eglMakeCurrent(display, eglSurface, eglSurface, context);
    GLES20.glClearColor(0, 0, 0, 1);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
    egl.eglSwapBuffers(display, eglSurface);
    egl.eglDestroySurface(display, eglSurface);
    egl.eglMakeCurrent(display, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, 
            EGL10.EGL_NO_CONTEXT);
    egl.eglDestroyContext(display, context);
    egl.eglTerminate(display);
}

相当粗糙，缺乏错误检查，但对我有用.

Pretty crude, lacks error checking, but it works for me.

这篇关于在视频完成时从表面视图清除视频帧的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！