status_t GonkBufferQueueProducer::dequeueBuffer(int *outSlot,
sp<android::Fence> *outFence, bool async,
uint32_t width, uint32_t height, uint32_t format, uint32_t usage) {
ATRACE_CALL();
{ // Autolock scope
Mutex::Autolock lock(mCore->mMutex);
mConsumerName = mCore->mConsumerName;
} // Autolock scope
ALOGV("dequeueBuffer: async=%s w=%u h=%u format=%#x, usage=%#x",
async ? "true" : "false", width, height, format, usage);
if ((width && !height) || (!width && height)) {
ALOGE("dequeueBuffer: invalid size: w=%u h=%u", width, height);
return BAD_VALUE;
}
status_t returnFlags = NO_ERROR;
// Reset slot
*outSlot = GonkBufferQueueCore::INVALID_BUFFER_SLOT;
bool attachedByConsumer = false;
{ // Autolock scope
Mutex::Autolock lock(mCore->mMutex);
mCore->waitWhileAllocatingLocked();
if (format == 0) {
format = mCore->mDefaultBufferFormat;
}
// Enable the usage bits the consumer requested
usage |= mCore->mConsumerUsageBits;
int found;
status_t status = waitForFreeSlotThenRelock("dequeueBuffer", async,
&found, &returnFlags);
if (status != NO_ERROR) {
return status;
}
// This should not happen
if (found == GonkBufferQueueCore::INVALID_BUFFER_SLOT) {
ALOGE("dequeueBuffer: no available buffer slots");
return -EBUSY;
}
*outSlot = found;
attachedByConsumer = mSlots[found].mAttachedByConsumer;
const bool useDefaultSize = !width && !height;
if (useDefaultSize) {
width = mCore->mDefaultWidth;
height = mCore->mDefaultHeight;
}
mSlots[found].mBufferState = GonkBufferSlot::DEQUEUED;
const sp<GraphicBuffer>& buffer(mSlots[found].mGraphicBuffer);
if ((buffer == NULL) ||
(static_cast<uint32_t>(buffer->width) != width) ||
(static_cast<uint32_t>(buffer->height) != height) ||
(static_cast<uint32_t>(buffer->format) != format) ||
((static_cast<uint32_t>(buffer->usage) & usage) != usage))
{
mSlots[found].mAcquireCalled = false;
mSlots[found].mGraphicBuffer = NULL;
mSlots[found].mRequestBufferCalled = false;
mSlots[found].mFence = Fence::NO_FENCE;
if (mSlots[found].mTextureClient) {
mSlots[found].mTextureClient->ClearRecycleCallback();
// release TextureClient in ImageBridge thread
TextureClientReleaseTask* task = new TextureClientReleaseTask(mSlots[found].mTextureClient);
mSlots[found].mTextureClient = NULL;
ImageBridgeChild::GetSingleton()->GetMessageLoop()->PostTask(FROM_HERE, task);
}
returnFlags |= BUFFER_NEEDS_REALLOCATION;
}
if (CC_UNLIKELY(mSlots[found].mFence == NULL)) {
ALOGE("dequeueBuffer: about to return a NULL fence - "
"slot=%d w=%d h=%d format=%u",
found, buffer->width, buffer->height, buffer->format);
}
*outFence = mSlots[found].mFence;
mSlots[found].mFence = Fence::NO_FENCE;
} // Autolock scope
if (returnFlags & BUFFER_NEEDS_REALLOCATION) {
RefPtr<GrallocTextureClientOGL> textureClient =
new GrallocTextureClientOGL(ImageBridgeChild::GetSingleton(),
gfx::SurfaceFormat::UNKNOWN,
gfx::BackendType::NONE,
TextureFlags::DEALLOCATE_CLIENT);
textureClient->SetIsOpaque(true);
usage |= GraphicBuffer::USAGE_HW_TEXTURE;
bool result = textureClient->AllocateGralloc(IntSize(width, height), format, usage);
sp<GraphicBuffer> graphicBuffer = textureClient->GetGraphicBuffer();
if (!result || !graphicBuffer.get()) {
ALOGE("dequeueBuffer: failed to alloc gralloc buffer");
return -ENOMEM;
}
{ // Autolock scope
Mutex::Autolock lock(mCore->mMutex);
if (mCore->mIsAbandoned) {
ALOGE("dequeueBuffer: GonkBufferQueue has been abandoned");
return NO_INIT;
}
mSlots[*outSlot].mFrameNumber = UINT32_MAX;
mSlots[*outSlot].mGraphicBuffer = graphicBuffer;
mSlots[*outSlot].mTextureClient = textureClient;
} // Autolock scope
}
if (attachedByConsumer) {
returnFlags |= BUFFER_NEEDS_REALLOCATION;
}
ALOGV("dequeueBuffer: returning slot=%d/%" PRIu64 " buf=%p flags=%#x",
*outSlot,
mSlots[*outSlot].mFrameNumber,
mSlots[*outSlot].mGraphicBuffer->handle, returnFlags);
return returnFlags;
}
status_t GonkBufferQueue::dequeueBuffer(int *outBuf, sp<Fence>* outFence,
uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
ST_LOGV("dequeueBuffer: w=%d h=%d fmt=%#x usage=%#x", w, h, format, usage);
if ((w && !h) || (!w && h)) {
ST_LOGE("dequeueBuffer: invalid size: w=%u, h=%u", w, h);
return BAD_VALUE;
}
status_t returnFlags(OK);
int buf = INVALID_BUFFER_SLOT;
{ // Scope for the lock
Mutex::Autolock lock(mMutex);
if (format == 0) {
format = mDefaultBufferFormat;
}
// turn on usage bits the consumer requested
usage |= mConsumerUsageBits;
int found = -1;
int dequeuedCount = 0;
bool tryAgain = true;
while (tryAgain) {
if (mAbandoned) {
ST_LOGE("dequeueBuffer: GonkBufferQueue has been abandoned!");
return NO_INIT;
}
const int maxBufferCount = getMaxBufferCountLocked();
// Free up any buffers that are in slots beyond the max buffer
// count.
//for (int i = maxBufferCount; i < NUM_BUFFER_SLOTS; i++) {
// assert(mSlots[i].mBufferState == BufferSlot::FREE);
// if (mSlots[i].mGraphicBuffer != NULL) {
// freeBufferLocked(i);
// returnFlags |= IGraphicBufferProducer::RELEASE_ALL_BUFFERS;
// }
//}
// look for a free buffer to give to the client
found = INVALID_BUFFER_SLOT;
dequeuedCount = 0;
for (int i = 0; i < maxBufferCount; i++) {
const int state = mSlots[i].mBufferState;
if (state == BufferSlot::DEQUEUED) {
dequeuedCount++;
}
if (state == BufferSlot::FREE) {
/* We return the oldest of the free buffers to avoid
* stalling the producer if possible. This is because
* the consumer may still have pending reads of the
* buffers in flight.
*/
if ((found < 0) ||
mSlots[i].mFrameNumber < mSlots[found].mFrameNumber) {
found = i;
}
}
}
// clients are not allowed to dequeue more than one buffer
// if they didn't set a buffer count.
if (!mOverrideMaxBufferCount && dequeuedCount) {
ST_LOGE("dequeueBuffer: can't dequeue multiple buffers without "
"setting the buffer count");
return -EINVAL;
}
// See whether a buffer has been queued since the last
// setBufferCount so we know whether to perform the min undequeued
// buffers check below.
if (mBufferHasBeenQueued) {
// make sure the client is not trying to dequeue more buffers
// than allowed.
const int newUndequeuedCount = maxBufferCount - (dequeuedCount+1);
const int minUndequeuedCount = getMinUndequeuedBufferCountLocked();
if (newUndequeuedCount < minUndequeuedCount) {
ST_LOGE("dequeueBuffer: min undequeued buffer count (%d) "
"exceeded (dequeued=%d undequeudCount=%d)",
minUndequeuedCount, dequeuedCount,
newUndequeuedCount);
return -EBUSY;
}
}
// If no buffer is found, wait for a buffer to be released or for
// the max buffer count to change.
tryAgain = found == INVALID_BUFFER_SLOT;
if (tryAgain) {
mDequeueCondition.wait(mMutex);
}
}
if (found == INVALID_BUFFER_SLOT) {
// This should not happen.
ST_LOGE("dequeueBuffer: no available buffer slots");
return -EBUSY;
}
buf = found;
*outBuf = found;
const bool useDefaultSize = !w && !h;
if (useDefaultSize) {
// use the default size
w = mDefaultWidth;
h = mDefaultHeight;
}
mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
const sp<GraphicBuffer>& buffer(mSlots[buf].mGraphicBuffer);
if ((buffer == NULL) ||
(uint32_t(buffer->width) != w) ||
(uint32_t(buffer->height) != h) ||
(uint32_t(buffer->format) != format) ||
((uint32_t(buffer->usage) & usage) != usage))
{
mSlots[buf].mAcquireCalled = false;
mSlots[buf].mGraphicBuffer = NULL;
mSlots[buf].mRequestBufferCalled = false;
mSlots[buf].mFence = Fence::NO_FENCE;
if (mSlots[buf].mTextureClient) {
mSlots[buf].mTextureClient->ClearRecycleCallback();
// release TextureClient in ImageBridge thread
TextureClientReleaseTask* task = new TextureClientReleaseTask(mSlots[buf].mTextureClient);
mSlots[buf].mTextureClient = NULL;
ImageBridgeChild::GetSingleton()->GetMessageLoop()->PostTask(FROM_HERE, task);
}
returnFlags |= IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION;
}
*outFence = mSlots[buf].mFence;
mSlots[buf].mFence = Fence::NO_FENCE;
} // end lock scope
sp<GraphicBuffer> graphicBuffer;
if (returnFlags & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
RefPtr<GrallocTextureClientOGL> textureClient =
new GrallocTextureClientOGL(ImageBridgeChild::GetSingleton(),
gfx::SurfaceFormat::UNKNOWN,
gfx::BackendType::NONE,
TextureFlags::DEALLOCATE_CLIENT);
textureClient->SetIsOpaque(true);
usage |= GraphicBuffer::USAGE_HW_TEXTURE;
bool result = textureClient->AllocateGralloc(IntSize(w, h), format, usage);
sp<GraphicBuffer> graphicBuffer = textureClient->GetGraphicBuffer();
if (!result || !graphicBuffer.get()) {
ST_LOGE("dequeueBuffer: failed to alloc gralloc buffer");
return -ENOMEM;
}
{ // Scope for the lock
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("dequeueBuffer: SurfaceTexture has been abandoned!");
return NO_INIT;
}
mSlots[buf].mGraphicBuffer = graphicBuffer;
mSlots[buf].mTextureClient = textureClient;
ST_LOGD("dequeueBuffer: returning slot=%d buf=%p ", buf,
mSlots[buf].mGraphicBuffer->handle);
//mSlots[*outBuf].mGraphicBuffer = graphicBuffer;
}
}
ST_LOGV("dequeueBuffer: returning slot=%d buf=%p flags=%#x", *outBuf,
mSlots[*outBuf].mGraphicBuffer->handle, returnFlags);
return returnFlags;
}