Esempi in C++ (Cpp) per getSampleSizeDirect

Esempio n. 1

File: SampleIterator.cpp Progetto: AOSP-JF/platform_frameworks_av

status_t SampleIterator::seekTo(uint32_t sampleIndex) {
    ALOGV("seekTo(%d)", sampleIndex);

    if (sampleIndex >= mTable->mNumSampleSizes) {
        return ERROR_END_OF_STREAM;
    }

    if (mTable->mSampleToChunkOffset < 0
            || mTable->mChunkOffsetOffset < 0
            || mTable->mSampleSizeOffset < 0
            || mTable->mTimeToSampleCount == 0) {

        return ERROR_MALFORMED;
    }

    if (mInitialized && mCurrentSampleIndex == sampleIndex) {
        return OK;
    }

    if (!mInitialized || sampleIndex < mFirstChunkSampleIndex) {
        reset();
    }

    if (sampleIndex >= mStopChunkSampleIndex) {
        status_t err;
        if ((err = findChunkRange(sampleIndex)) != OK) {
            ALOGE("findChunkRange failed");
            return err;
        }
    }

    CHECK(sampleIndex < mStopChunkSampleIndex);

    uint32_t chunk =
        (sampleIndex - mFirstChunkSampleIndex) / mSamplesPerChunk
        + mFirstChunk;

    if (!mInitialized || chunk != mCurrentChunkIndex) {
        mCurrentChunkIndex = chunk;

        status_t err;
        if ((err = getChunkOffset(chunk, &mCurrentChunkOffset)) != OK) {
            ALOGE("getChunkOffset return error");
            return err;
        }

        mCurrentChunkSampleSizes.clear();

        uint32_t firstChunkSampleIndex =
            mFirstChunkSampleIndex
                + mSamplesPerChunk * (mCurrentChunkIndex - mFirstChunk);

        for (uint32_t i = 0; i < mSamplesPerChunk; ++i) {
            size_t sampleSize;
            if ((err = getSampleSizeDirect(
                            firstChunkSampleIndex + i, &sampleSize)) != OK) {
                ALOGE("getSampleSizeDirect return error");
                return err;
            }

            mCurrentChunkSampleSizes.push(sampleSize);
        }
    }

    uint32_t chunkRelativeSampleIndex =
        (sampleIndex - mFirstChunkSampleIndex) % mSamplesPerChunk;

    mCurrentSampleOffset = mCurrentChunkOffset;
    for (uint32_t i = 0; i < chunkRelativeSampleIndex; ++i) {
        mCurrentSampleOffset += mCurrentChunkSampleSizes[i];
    }

    mCurrentSampleSize = mCurrentChunkSampleSizes[chunkRelativeSampleIndex];
    if (sampleIndex < mTTSSampleIndex) {
        mTimeToSampleIndex = 0;
        mTTSSampleIndex = 0;
        mTTSSampleTime = 0;
        mTTSCount = 0;
        mTTSDuration = 0;
    }

    status_t err;
    if ((err = findSampleTimeAndDuration(
            sampleIndex, &mCurrentSampleTime, &mCurrentSampleDuration)) != OK) {
        ALOGE("findSampleTime return error");
        return err;
    }

    mCurrentSampleIndex = sampleIndex;

    mInitialized = true;

    return OK;
}

Esempio n. 2

File: SampleIterator.cpp Progetto: sztwang/TX2_libstagefright

status_t SampleIterator::seekTo(uint32_t sampleIndex) {
    ALOGV("seekTo(%d)", sampleIndex);
#ifdef MTK_AOSP_ENHANCEMENT
	bool isNewChunk = false;
#endif

    if (sampleIndex >= mTable->mNumSampleSizes) {
        return ERROR_END_OF_STREAM;
    }

    if (mTable->mSampleToChunkOffset < 0
            || mTable->mChunkOffsetOffset < 0
            || mTable->mSampleSizeOffset < 0
            || mTable->mTimeToSampleCount == 0) {

        return ERROR_MALFORMED;
    }

    if (mInitialized && mCurrentSampleIndex == sampleIndex) {
        return OK;
    }

    if (!mInitialized || sampleIndex < mFirstChunkSampleIndex) {
#ifdef MTK_AOSP_ENHANCEMENT
		isNewChunk = true;
#endif
        reset();
    }

    if (sampleIndex >= mStopChunkSampleIndex) {
#ifdef MTK_AOSP_ENHANCEMENT
		isNewChunk = true;
#endif
        status_t err;
        if ((err = findChunkRange(sampleIndex)) != OK) {
            ALOGE("findChunkRange failed");
            return err;
        }
    }

    CHECK(sampleIndex < mStopChunkSampleIndex);

    uint32_t chunk =
        (sampleIndex - mFirstChunkSampleIndex) / mSamplesPerChunk
        + mFirstChunk;

    if (!mInitialized || chunk != mCurrentChunkIndex) {
#ifdef MTK_AOSP_ENHANCEMENT
		isNewChunk = true;
#endif
        mCurrentChunkIndex = chunk;

        status_t err;
        if ((err = getChunkOffset(chunk, &mCurrentChunkOffset)) != OK) {
            ALOGE("getChunkOffset return error");
            return err;
        }

        mCurrentChunkSampleSizes.clear();

        uint32_t firstChunkSampleIndex =
            mFirstChunkSampleIndex
                + mSamplesPerChunk * (mCurrentChunkIndex - mFirstChunk);

        for (uint32_t i = 0; i < mSamplesPerChunk; ++i) {
            size_t sampleSize;
            if ((err = getSampleSizeDirect(
                            firstChunkSampleIndex + i, &sampleSize)) != OK) {
                ALOGE("getSampleSizeDirect return error");
#ifdef MTK_AOSP_ENHANCEMENT
				if (err == ERROR_OUT_OF_RANGE)
				{
				ALOGW("Sample Index(from stsc) > Sample Count(from stsz), Set mSamplesPerChunk to %d according to stsz", mSamplesPerChunk);
					mSamplesPerChunk = i;
					break;
				}
				else
					return err;
#else
                return err;
#endif
            }

            mCurrentChunkSampleSizes.push(sampleSize);
        }
    }

    uint32_t chunkRelativeSampleIndex =
        (sampleIndex - mFirstChunkSampleIndex) % mSamplesPerChunk;
#ifdef MTK_AOSP_ENHANCEMENT
	if (!isNewChunk && (sampleIndex == mCurrentSampleIndex + 1) && (chunkRelativeSampleIndex > 0)) {
		mCurrentSampleOffset += mCurrentChunkSampleSizes[chunkRelativeSampleIndex-1];
	}
	else {
#endif

    mCurrentSampleOffset = mCurrentChunkOffset;
    for (uint32_t i = 0; i < chunkRelativeSampleIndex; ++i) {
        mCurrentSampleOffset += mCurrentChunkSampleSizes[i];
    }
#ifdef MTK_AOSP_ENHANCEMENT
	}
#endif
    mCurrentSampleSize = mCurrentChunkSampleSizes[chunkRelativeSampleIndex];
    if (sampleIndex < mTTSSampleIndex) {
        mTimeToSampleIndex = 0;
        mTTSSampleIndex = 0;
        mTTSSampleTime = 0;
        mTTSCount = 0;
        mTTSDuration = 0;
    }

    status_t err;
    if ((err = findSampleTimeAndDuration(
            sampleIndex, &mCurrentSampleTime, &mCurrentSampleDuration)) != OK) {
        ALOGE("findSampleTime return error");
        return err;
    }

    mCurrentSampleIndex = sampleIndex;

    mInitialized = true;

    return OK;
}