status_t VirtualDisplaySurface::queueBuffer(int pslot,
        const QueueBufferInput& input, QueueBufferOutput* output) {
    if (mDisplayId < 0)
        return mSource[SOURCE_SINK]->queueBuffer(pslot, input, output);

    VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
            "Unexpected queueBuffer(pslot=%d) in %s state", pslot,
            dbgStateStr());
    mDbgState = DBG_STATE_GLES_DONE;

    VDS_LOGV("queueBuffer pslot=%d", pslot);

    status_t result;
    if (mCompositionType == COMPOSITION_MIXED) {
        // Queue the buffer back into the scratch pool
        QueueBufferOutput scratchQBO;
        int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot);
        result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO);
        if (result != NO_ERROR)
            return result;

        // Now acquire the buffer from the scratch pool -- should be the same
        // slot and fence as we just queued.
        Mutex::Autolock lock(mMutex);
        BufferItem item;
        result = acquireBufferLocked(&item, 0);
        if (result != NO_ERROR)
            return result;
        VDS_LOGW_IF(item.mBuf != sslot,
                "queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d",
                item.mBuf, sslot);
        mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf);
        mFbFence = mSlots[item.mBuf].mFence;

    } else {
        LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES,
                "Unexpected queueBuffer in state %s for compositionType %s",
                dbgStateStr(), dbgCompositionTypeStr(mCompositionType));

        // Extract the GLES release fence for HWC to acquire
        int64_t timestamp;
        bool isAutoTimestamp;
        android_dataspace dataSpace;
        Rect crop;
        int scalingMode;
        uint32_t transform;
        bool async;
        input.deflate(&timestamp, &isAutoTimestamp, &dataSpace, &crop,
                &scalingMode, &transform, &async, &mFbFence);

        mFbProducerSlot = pslot;
        mOutputFence = mFbFence;
    }

    *output = mQueueBufferOutput;
    return NO_ERROR;
}
status_t VirtualDisplaySurface::dequeueBuffer(Source source,
        uint32_t format, uint32_t usage, int* sslot, sp<Fence>* fence) {
    LOG_FATAL_IF(mDisplayId < 0, "mDisplayId=%d but should not be < 0.", mDisplayId);
    // Don't let a slow consumer block us
    bool async = (source == SOURCE_SINK);

    status_t result = mSource[source]->dequeueBuffer(sslot, fence, async,
            mSinkBufferWidth, mSinkBufferHeight, format, usage);
    if (result < 0)
        return result;
    int pslot = mapSource2ProducerSlot(source, *sslot);
    VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d",
            dbgSourceStr(source), *sslot, pslot, result);
    uint64_t sourceBit = static_cast<uint64_t>(source) << pslot;

    if ((mProducerSlotSource & (1ULL << pslot)) != sourceBit) {
        // This slot was previously dequeued from the other source; must
        // re-request the buffer.
        result |= BUFFER_NEEDS_REALLOCATION;
        mProducerSlotSource &= ~(1ULL << pslot);
        mProducerSlotSource |= sourceBit;
    }

    if (result & RELEASE_ALL_BUFFERS) {
        for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
            if ((mProducerSlotSource & (1ULL << i)) == sourceBit)
                mProducerBuffers[i].clear();
        }
    }
    if (result & BUFFER_NEEDS_REALLOCATION) {
        result = mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]);
        if (result < 0) {
            mProducerBuffers[pslot].clear();
            mSource[source]->cancelBuffer(*sslot, *fence);
            return result;
        }
        VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x",
                dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(),
                mProducerBuffers[pslot]->getPixelFormat(),
                mProducerBuffers[pslot]->getUsage());
    }

    return result;
}
Exemplo n.º 3
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status_t VirtualDisplaySurface::refreshOutputBuffer() {
    if (mOutputProducerSlot >= 0) {
        mSource[SOURCE_SINK]->cancelBuffer(
                mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot),
                mOutputFence);
    }

    int sslot;
    status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage,
            &sslot, &mOutputFence);
    if (result < 0)
        return result;
    mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot);

    // On GLES-only frames, we don't have the right output buffer acquire fence
    // until after GLES calls queueBuffer(). So here we just set the buffer
    // (for use in HWC prepare) but not the fence; we'll call this again with
    // the proper fence once we have it.
    result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE,
            mProducerBuffers[mOutputProducerSlot]);

    return result;
}
Exemplo n.º 4
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int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) {
    return mapSource2ProducerSlot(source, pslot);
}
Exemplo n.º 5
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status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async,
        uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
    VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
            "Unexpected dequeueBuffer() in %s state", dbgStateStr());
    mDbgState = DBG_STATE_GLES;

    VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)");
    VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage);

    status_t result = NO_ERROR;
    Source source = fbSourceForCompositionType(mCompositionType);

    if (source == SOURCE_SINK) {

        if (mOutputProducerSlot < 0) {
            // Last chance bailout if something bad happened earlier. For example,
            // in a GLES configuration, if the sink disappears then dequeueBuffer
            // will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
            // will soldier on. So we end up here without a buffer. There should
            // be lots of scary messages in the log just before this.
            VDS_LOGE("dequeueBuffer: no buffer, bailing out");
            return NO_MEMORY;
        }

        // We already dequeued the output buffer. If the GLES driver wants
        // something incompatible, we have to cancel and get a new one. This
        // will mean that HWC will see a different output buffer between
        // prepare and set, but since we're in GLES-only mode already it
        // shouldn't matter.

        usage |= GRALLOC_USAGE_HW_COMPOSER;
        const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot];
        if ((usage & ~buf->getUsage()) != 0 ||
                (format != 0 && format != (uint32_t)buf->getPixelFormat()) ||
                (w != 0 && w != mSinkBufferWidth) ||
                (h != 0 && h != mSinkBufferHeight)) {
            VDS_LOGV("dequeueBuffer: dequeueing new output buffer: "
                    "want %dx%d fmt=%d use=%#x, "
                    "have %dx%d fmt=%d use=%#x",
                    w, h, format, usage,
                    mSinkBufferWidth, mSinkBufferHeight,
                    buf->getPixelFormat(), buf->getUsage());
            mOutputFormat = format;
            mOutputUsage = usage;
            result = refreshOutputBuffer();
            if (result < 0)
                return result;
        }
    }

    if (source == SOURCE_SINK) {
        *pslot = mOutputProducerSlot;
        *fence = mOutputFence;
    } else {
        int sslot;
        result = dequeueBuffer(source, format, usage, &sslot, fence);
        if (result >= 0) {
            *pslot = mapSource2ProducerSlot(source, sslot);
        }
    }
    return result;
}