Android image to video

Question

How I can load an image as a texture and rendering it through GLES to use the MediaCodec Surface input approach?

I was started from EncodeAndMuxTest example.

Thank you in advance.

Answer 1

Look at sample from grafika ,it will give you insight about how you should do it

Here is code to load bitmap into texture

int mTextureId = -1;

public void loadTexture(Bitmap bitmap)
{
    if (mTextureId != -1) {
        int[] textureHandle = new int[1];

        GLES20.glGenTextures(1, textureHandle, 0);


        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureId);

        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, 
            GLES20.GL_TEXTURE_MIN_FILTER,
            GLES20.GL_NEAREST);
        GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, 
            GLES20.GL_TEXTURE_MAG_FILTER,
            GLES20.GL_LINEAR);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, 
            GLES20.GL_TEXTURE_WRAP_S,
            GLES20.GL_CLAMP_TO_EDGE);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, 
            GLES20.GL_TEXTURE_WRAP_T,
            GLES20.GL_CLAMP_TO_EDGE);
    } else {
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextureId);
    }

    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
 }

and here is how you can render it to inputsurface

// Create Fullframe rectangle (a class from grafika),
mInputSurface.makeCurrent();
mFullFrameRect = new FullFrameRect(new Texture2dProgram(Texture2dProgram.ProgramType.TEXTURE_2D));

....


// And when you want to draw it
mInputSurface.makeCurrent(); // if its not already current
loadTexture(bitmap);
GLES20.glViewport(0, 0, viewWidth, viewHeight);
mFullFrameRect.drawFrame(mTextureId, GlUtil.IDENTITY_MATRIX);
mInputSurface.setPresentationTime(pts);
mInputSurface.swapBuffers();

FullFrameRect, Texture2dProgram, GlUtil are classes from Grafika, so you should copy it or implement similar functionality by yourself