hasFrame()

bool fl::video::PixelStream::hasFrame

(

fl::u32

frameNumber

)

Definition at line 295 of file pixel_stream.cpp.hpp.

                                                         {
    if (!mHandle) {
        return false;
    }
    if (mType == kStreaming) {
        // Streaming handle doesn't support seeking
        DBG("Not implemented and therefore always returns true");
        return true;
    }
    // Use size_t throughout so frameNumber * bytesPerFrame doesn't overflow
    // u32 for high-LED-count grids past ~1M frames.
    fl::size_t total_bytes = mHandle->size();
    fl::size_t frameBytes = static_cast<fl::size_t>(frameNumber)
        * static_cast<fl::size_t>(mbytesPerFrame);
    fl::size_t target = mPayloadOffset + frameBytes;
    return target < total_bytes;
}

References DBG, fl::FL_NO_EXCEPT, kStreaming, mbytesPerFrame, mHandle, mPayloadOffset, and mType.