Mediacodec 编码过程源码解析_mediacodec编码

C++
static jobject android_media_MediaCodec_createInputSurface(JNIEnv* env,
        jobject thiz) {
    ALOGV("android_media_MediaCodec_createInputSurface");
    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
    if (codec == NULL || codec->initCheck() != OK) {
        throwExceptionAsNecessary(env, INVALID_OPERATION);
        return NULL;
    }
    // Tell the MediaCodec that we want to use a Surface as input.
    sp<IGraphicBufferProducer> bufferProducer;
    status_t err = codec->createInputSurface(&bufferProducer);
    if (err != NO_ERROR) {
        throwExceptionAsNecessary(env, err);
        return NULL;
    }
    // Wrap the IGBP in a Java-language Surface.
    return android_view_Surface_createFromIGraphicBufferProducer(env,
            bufferProducer);
}

jobject android_view_Surface_createFromIGraphicBufferProducer(JNIEnv* env,
        const sp<IGraphicBufferProducer>& bufferProducer) {
    if (bufferProducer == NULL) {
        return NULL;
    }
    sp<Surface> surface(new Surface(bufferProducer, true));
    return android_view_Surface_createFromSurface(env, surface);
}
jobject android_view_Surface_createFromSurface(JNIEnv* env, const sp<Surface>& surface) {