Merge "Sanity checking when parsing 'trun' box."

        sampleCtsOffset = 0;

    }

    if (bytesPerSample != 0) {

        if (size < (off64_t)sampleCount * bytesPerSample) {

            return -EINVAL;

        }

    } else {

        if (sampleDuration == 0) {

            ALOGW("b/123389881 sampleDuration == 0");

            android_errorWriteLog(0x534e4554, "124389881 zero");

            return -EINVAL;

        }

        // apply some sanity (vs strict legality) checks

        //

        // clamp the count of entries in the trun box, to avoid spending forever parsing

        // this box. Clamping (vs error) lets us play *something*.

        // 1 million is about 400 msecs on a Pixel3, should be no more than a couple seconds

        // on the slowest devices.

        static constexpr uint32_t kMaxTrunSampleCount = 1000000;

        if (sampleCount > kMaxTrunSampleCount) {

            ALOGW("b/123389881 clamp sampleCount(%u) @ kMaxTrunSampleCount(%u)",

                  sampleCount, kMaxTrunSampleCount);

            android_errorWriteLog(0x534e4554, "124389881 count");

        }

    }

    Sample tmp;

    for (uint32_t i = 0; i < sampleCount; ++i) {