C++ (Cpp) lockPixels示例

示例#1

文件： bitmap.c 项目： 551780457/android-gif-drawable

__unused JNIEXPORT jlong JNICALL
Java_pl_droidsonroids_gif_GifInfoHandle_renderFrame(JNIEnv *env, jclass __unused handleClass,
                                                    jlong gifInfo, jobject jbitmap) {
    GifInfo *info = (GifInfo *) (intptr_t) gifInfo;
    if (info == NULL)
        return -1;

    time_t renderStartTime = getRealTime();
    void *pixels;
    if (lockPixels(env, jbitmap, info, &pixels) != 0) {
        return 0;
    }
    DDGifSlurp(info, true);
    const uint_fast16_t frameDuration = getBitmap((argb *) pixels, info);
    unlockPixels(env, jbitmap);
    return calculateInvalidationDelay(info, renderStartTime, frameDuration);
}

示例#2

文件： LazyDecodingPixelRef.cpp 项目： jiezh/h5vcc

void LazyDecodingPixelRef::Decode()
{
    lockPixels();
    unlockPixels();
}