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gecko-dev/dom/camera/GonkNativeWindow.cpp

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/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "base/basictypes.h"
#include "GonkCameraHwMgr.h"
#include "mozilla/layers/ShadowLayers.h"
#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "GonkNativeWindow.h"
#include "nsDebug.h"
/**
* DOM_CAMERA_LOGI() is enabled in debug builds, and turned on by setting
* NSPR_LOG_MODULES=Camera:N environment variable, where N >= 3.
*
* CNW_LOGE() is always enabled.
*/
#define CNW_LOGD(...) DOM_CAMERA_LOGI(__VA_ARGS__)
#define CNW_LOGE(...) {(void)printf_stderr(__VA_ARGS__);}
using namespace android;
using namespace mozilla::layers;
GonkNativeWindow::GonkNativeWindow() :
mDefaultWidth(1),
mDefaultHeight(1),
mPixelFormat(PIXEL_FORMAT_RGBA_8888),
mBufferCount(MIN_BUFFER_SLOTS + 1),
mConnectedApi(NO_CONNECTED_API),
mAbandoned(false),
mFrameCounter(0),
mGeneration(0),
mNewFrameCallback(nullptr) {
}
GonkNativeWindow::~GonkNativeWindow() {
nsAutoTArray<SurfaceDescriptor, NUM_BUFFER_SLOTS> freeList;
freeAllBuffersLocked(freeList);
releaseBufferFreeListUnlocked(freeList);
}
void GonkNativeWindow::abandon()
{
CNW_LOGD("abandon");
nsAutoTArray<SurfaceDescriptor, NUM_BUFFER_SLOTS> freeList;
{
Mutex::Autolock lock(mMutex);
mQueue.clear();
mAbandoned = true;
freeAllBuffersLocked(freeList);
}
releaseBufferFreeListUnlocked(freeList);
mDequeueCondition.signal();
}
void GonkNativeWindow::freeAllBuffersLocked(nsTArray<SurfaceDescriptor>& freeList)
{
CNW_LOGD("freeAllBuffersLocked: from generation %d", mGeneration);
++mGeneration;
for (int i = 0; i < NUM_BUFFER_SLOTS; ++i) {
if (mSlots[i].mGraphicBuffer != NULL) {
// Don't try to destroy the gralloc buffer if it is still in the
// video stream awaiting rendering.
if (mSlots[i].mBufferState != BufferSlot::RENDERING) {
SurfaceDescriptor* desc = freeList.AppendElement();
*desc = mSlots[i].mSurfaceDescriptor;
}
mSlots[i].mGraphicBuffer = NULL;
mSlots[i].mBufferState = BufferSlot::FREE;
mSlots[i].mFrameNumber = 0;
}
}
}
void GonkNativeWindow::releaseBufferFreeListUnlocked(nsTArray<SurfaceDescriptor>& freeList)
{
// This function MUST ONLY be called with mMutex unlocked; else there
// is a risk of deadlock with the ImageBridge thread.
CNW_LOGD("releaseBufferFreeListUnlocked: E");
ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
for (uint32_t i = 0; i < freeList.Length(); ++i) {
ibc->DeallocSurfaceDescriptorGralloc(freeList[i]);
}
freeList.Clear();
CNW_LOGD("releaseBufferFreeListUnlocked: X");
}
void GonkNativeWindow::clearRenderingStateBuffersLocked()
{
++mGeneration;
for (int i = 0; i < NUM_BUFFER_SLOTS; ++i) {
if (mSlots[i].mGraphicBuffer != NULL) {
// Don't try to destroy the gralloc buffer if it is still in the
// video stream awaiting rendering.
if (mSlots[i].mBufferState == BufferSlot::RENDERING) {
mSlots[i].mGraphicBuffer = NULL;
mSlots[i].mBufferState = BufferSlot::FREE;
mSlots[i].mFrameNumber = 0;
}
}
}
}
status_t GonkNativeWindow::setBufferCount(int bufferCount)
{
CNW_LOGD("setBufferCount: count=%d", bufferCount);
nsAutoTArray<SurfaceDescriptor, NUM_BUFFER_SLOTS> freeList;
{
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGE("setBufferCount: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
if (bufferCount > NUM_BUFFER_SLOTS) {
CNW_LOGE("setBufferCount: bufferCount larger than slots available");
return BAD_VALUE;
}
if (bufferCount < MIN_BUFFER_SLOTS) {
CNW_LOGE("setBufferCount: requested buffer count (%d) is less than "
"minimum (%d)", bufferCount, MIN_BUFFER_SLOTS);
return BAD_VALUE;
}
// Error out if the user has dequeued buffers.
for (int i=0 ; i<mBufferCount ; i++) {
if (mSlots[i].mBufferState == BufferSlot::DEQUEUED) {
CNW_LOGE("setBufferCount: client owns some buffers");
return -EINVAL;
}
}
if (bufferCount >= mBufferCount) {
mBufferCount = bufferCount;
//clear only buffers in RENDERING state.
clearRenderingStateBuffersLocked();
mQueue.clear();
mDequeueCondition.signal();
return OK;
}
// here we're guaranteed that the client doesn't have dequeued buffers
// and will release all of its buffer references.
freeAllBuffersLocked(freeList);
mBufferCount = bufferCount;
mQueue.clear();
mDequeueCondition.signal();
}
releaseBufferFreeListUnlocked(freeList);
return OK;
}
status_t GonkNativeWindow::setDefaultBufferSize(uint32_t w, uint32_t h)
{
CNW_LOGD("setDefaultBufferSize: w=%d, h=%d", w, h);
if (!w || !h) {
CNW_LOGE("setDefaultBufferSize: dimensions cannot be 0 (w=%d, h=%d)",
w, h);
return BAD_VALUE;
}
Mutex::Autolock lock(mMutex);
mDefaultWidth = w;
mDefaultHeight = h;
return OK;
}
status_t GonkNativeWindow::requestBuffer(int slot, sp<GraphicBuffer>* buf)
{
CNW_LOGD("requestBuffer: slot=%d", slot);
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGE("requestBuffer: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
if (slot < 0 || mBufferCount <= slot) {
CNW_LOGE("requestBuffer: slot index out of range [0, %d]: %d",
mBufferCount, slot);
return BAD_VALUE;
}
mSlots[slot].mRequestBufferCalled = true;
*buf = mSlots[slot].mGraphicBuffer;
return NO_ERROR;
}
status_t GonkNativeWindow::dequeueBuffer(int *outBuf, uint32_t w, uint32_t h,
uint32_t format, uint32_t usage)
{
if ((w && !h) || (!w && h)) {
CNW_LOGE("dequeueBuffer: invalid size: w=%u, h=%u", w, h);
return BAD_VALUE;
}
status_t returnFlags(OK);
bool updateFormat = false;
uint32_t generation;
bool alloc = false;
int buf = INVALID_BUFFER_SLOT;
SurfaceDescriptor descOld;
{
Mutex::Autolock lock(mMutex);
generation = mGeneration;
int found = -1;
int dequeuedCount = 0;
int renderingCount = 0;
bool tryAgain = true;
CNW_LOGD("dequeueBuffer: E");
while (tryAgain) {
if (mAbandoned) {
CNW_LOGE("dequeueBuffer: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
// look for a free buffer to give to the client
found = INVALID_BUFFER_SLOT;
dequeuedCount = 0;
renderingCount = 0;
for (int i = 0; i < mBufferCount; i++) {
const int state = mSlots[i].mBufferState;
if (state == BufferSlot::DEQUEUED) {
dequeuedCount++;
}
else if (state == BufferSlot::RENDERING) {
renderingCount++;
}
else 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;
}
}
}
// See whether a buffer has been in RENDERING state since the last
// setBufferCount so we know whether to perform the
// MIN_UNDEQUEUED_BUFFERS check below.
if (renderingCount > 0) {
// make sure the client is not trying to dequeue more buffers
// than allowed.
const int avail = mBufferCount - (dequeuedCount + 1);
if (avail < MIN_UNDEQUEUED_BUFFERS) {
CNW_LOGE("dequeueBuffer: MIN_UNDEQUEUED_BUFFERS=%d exceeded "
"(dequeued=%d)",
MIN_UNDEQUEUED_BUFFERS,
dequeuedCount);
return -EBUSY;
}
}
// we're in synchronous mode and didn't find a buffer, we need to
// wait for some buffers to be consumed
tryAgain = (found == INVALID_BUFFER_SLOT);
if (tryAgain) {
CNW_LOGD("dequeueBuffer: Try again");
mDequeueCondition.wait(mMutex);
CNW_LOGD("dequeueBuffer: Now");
}
}
if (found == INVALID_BUFFER_SLOT) {
// This should not happen.
CNW_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;
}
updateFormat = (format != 0);
if (!updateFormat) {
// keep the current (or default) format
format = mPixelFormat;
}
mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
const sp<GraphicBuffer>& gbuf(mSlots[buf].mGraphicBuffer);
alloc = (gbuf == NULL);
if ((gbuf!=NULL) &&
((uint32_t(gbuf->width) != w) ||
(uint32_t(gbuf->height) != h) ||
(uint32_t(gbuf->format) != format) ||
((uint32_t(gbuf->usage) & usage) != usage))) {
alloc = true;
descOld = mSlots[buf].mSurfaceDescriptor;
}
}
// At this point, the buffer is now marked DEQUEUED, and no one else
// should touch it, except for freeAllBuffersLocked(); we handle that
// after trying to create the surface descriptor below.
//
// So we don't need mMutex locked, which would otherwise run the risk
// of a deadlock on calling AllocSurfaceDescriptorGralloc().
SurfaceDescriptor desc;
ImageBridgeChild* ibc;
sp<GraphicBuffer> graphicBuffer;
if (alloc) {
usage |= GraphicBuffer::USAGE_HW_TEXTURE;
status_t error;
ibc = ImageBridgeChild::GetSingleton();
CNW_LOGD("dequeueBuffer: about to alloc surface descriptor");
ibc->AllocSurfaceDescriptorGralloc(gfxIntSize(w, h),
format,
usage,
&desc);
// We can only use a gralloc buffer here. If we didn't get
// one back, something went wrong.
CNW_LOGD("dequeueBuffer: got surface descriptor");
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != desc.type()) {
MOZ_ASSERT(SurfaceDescriptor::T__None == desc.type());
CNW_LOGE("dequeueBuffer: failed to alloc gralloc buffer");
return -ENOMEM;
}
graphicBuffer = GrallocBufferActor::GetFrom(desc.get_SurfaceDescriptorGralloc());
error = graphicBuffer->initCheck();
if (error != NO_ERROR) {
CNW_LOGE("dequeueBuffer: createGraphicBuffer failed with error %d", error);
return error;
}
}
bool tooOld = false;
{
Mutex::Autolock lock(mMutex);
if (generation == mGeneration) {
if (updateFormat) {
mPixelFormat = format;
}
if (alloc) {
mSlots[buf].mGraphicBuffer = graphicBuffer;
mSlots[buf].mSurfaceDescriptor = desc;
mSlots[buf].mSurfaceDescriptor.get_SurfaceDescriptorGralloc().external() = true;
mSlots[buf].mRequestBufferCalled = false;
returnFlags |= ISurfaceTexture::BUFFER_NEEDS_REALLOCATION;
}
CNW_LOGD("dequeueBuffer: returning slot=%d buf=%p ", buf,
mSlots[buf].mGraphicBuffer->handle);
} else {
tooOld = true;
}
}
if (alloc && IsSurfaceDescriptorValid(descOld)) {
ibc->DeallocSurfaceDescriptorGralloc(descOld);
}
if (alloc && tooOld) {
ibc->DeallocSurfaceDescriptorGralloc(desc);
}
CNW_LOGD("dequeueBuffer: returning slot=%d buf=%p ", buf,
mSlots[buf].mGraphicBuffer->handle );
CNW_LOGD("dequeueBuffer: X");
return returnFlags;
}
status_t GonkNativeWindow::setSynchronousMode(bool enabled)
{
return NO_ERROR;
}
int GonkNativeWindow::getSlotFromBufferLocked(
android_native_buffer_t* buffer) const
{
if (buffer == NULL) {
CNW_LOGE("getSlotFromBufferLocked: encountered NULL buffer");
return BAD_VALUE;
}
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
if (mSlots[i].mGraphicBuffer != NULL && mSlots[i].mGraphicBuffer->handle == buffer->handle) {
return i;
}
}
CNW_LOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
return BAD_VALUE;
}
mozilla::layers::SurfaceDescriptor *
GonkNativeWindow::getSurfaceDescriptorFromBuffer(ANativeWindowBuffer* buffer)
{
int buf = getSlotFromBufferLocked(buffer);
if (buf < 0 || buf >= mBufferCount ||
mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
return nullptr;
}
return &mSlots[buf].mSurfaceDescriptor;
}
status_t GonkNativeWindow::queueBuffer(int buf, int64_t timestamp,
uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform)
{
{
Mutex::Autolock lock(mMutex);
CNW_LOGD("queueBuffer: E");
if (mAbandoned) {
CNW_LOGE("queueBuffer: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
if (buf < 0 || buf >= mBufferCount) {
CNW_LOGE("queueBuffer: slot index out of range [0, %d]: %d",
mBufferCount, buf);
return -EINVAL;
} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
CNW_LOGE("queueBuffer: slot %d is not owned by the client "
"(state=%d)", buf, mSlots[buf].mBufferState);
return -EINVAL;
} else if (!mSlots[buf].mRequestBufferCalled) {
CNW_LOGE("queueBuffer: slot %d was enqueued without requesting a "
"buffer", buf);
return -EINVAL;
}
mQueue.push_back(buf);
mSlots[buf].mBufferState = BufferSlot::QUEUED;
mSlots[buf].mTimestamp = timestamp;
mFrameCounter++;
mSlots[buf].mFrameNumber = mFrameCounter;
mDequeueCondition.signal();
*outWidth = mDefaultWidth;
*outHeight = mDefaultHeight;
*outTransform = 0;
}
// OnNewFrame might call lockCurrentBuffer so we must release the
// mutex first.
if (mNewFrameCallback) {
mNewFrameCallback->OnNewFrame();
}
CNW_LOGD("queueBuffer: X");
return OK;
}
already_AddRefed<GraphicBufferLocked>
GonkNativeWindow::getCurrentBuffer()
{
CNW_LOGD("GonkNativeWindow::getCurrentBuffer");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGE("getCurrentBuffer: GonkNativeWindow has been abandoned!");
return NULL;
}
if(mQueue.empty()) {
mDequeueCondition.signal();
return nullptr;
}
Fifo::iterator front(mQueue.begin());
int buf = *front;
mSlots[buf].mBufferState = BufferSlot::RENDERING;
nsRefPtr<GraphicBufferLocked> ret =
new CameraGraphicBuffer(this, buf, mGeneration, mSlots[buf].mSurfaceDescriptor);
mQueue.erase(front);
mDequeueCondition.signal();
return ret.forget();
}
bool
GonkNativeWindow::returnBuffer(uint32_t aIndex, uint32_t aGeneration)
{
CNW_LOGD("GonkNativeWindow::returnBuffer: slot=%d (generation=%d)", aIndex, aGeneration);
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGD("returnBuffer: GonkNativeWindow has been abandoned!");
return false;
}
if (aGeneration != mGeneration) {
CNW_LOGD("returnBuffer: buffer is from generation %d (current is %d)",
aGeneration, mGeneration);
return false;
}
if (aIndex >= mBufferCount) {
CNW_LOGE("returnBuffer: slot index out of range [0, %d]: %d",
mBufferCount, aIndex);
return false;
}
if (mSlots[aIndex].mBufferState != BufferSlot::RENDERING) {
CNW_LOGE("returnBuffer: slot %d is not owned by the compositor (state=%d)",
aIndex, mSlots[aIndex].mBufferState);
return false;
}
mSlots[aIndex].mBufferState = BufferSlot::FREE;
mDequeueCondition.signal();
return true;
}
void GonkNativeWindow::cancelBuffer(int buf) {
CNW_LOGD("cancelBuffer: slot=%d", buf);
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGD("cancelBuffer: GonkNativeWindow has been abandoned!");
return;
}
if (buf < 0 || buf >= mBufferCount) {
CNW_LOGE("cancelBuffer: slot index out of range [0, %d]: %d",
mBufferCount, buf);
return;
} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
CNW_LOGE("cancelBuffer: slot %d is not owned by the client (state=%d)",
buf, mSlots[buf].mBufferState);
return;
}
mSlots[buf].mBufferState = BufferSlot::FREE;
mSlots[buf].mFrameNumber = 0;
mDequeueCondition.signal();
}
status_t GonkNativeWindow::setCrop(const Rect& crop) {
return OK;
}
status_t GonkNativeWindow::setTransform(uint32_t transform) {
return OK;
}
status_t GonkNativeWindow::connect(int api,
uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
CNW_LOGD("connect: api=%d", api);
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGE("connect: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
int err = NO_ERROR;
switch (api) {
case NATIVE_WINDOW_API_EGL:
case NATIVE_WINDOW_API_CPU:
case NATIVE_WINDOW_API_MEDIA:
case NATIVE_WINDOW_API_CAMERA:
if (mConnectedApi != NO_CONNECTED_API) {
CNW_LOGE("connect: already connected (cur=%d, req=%d)",
mConnectedApi, api);
err = -EINVAL;
} else {
mConnectedApi = api;
*outWidth = mDefaultWidth;
*outHeight = mDefaultHeight;
*outTransform = 0;
}
break;
default:
err = -EINVAL;
break;
}
return err;
}
status_t GonkNativeWindow::disconnect(int api) {
CNW_LOGD("disconnect: api=%d", api);
int err = NO_ERROR;
nsAutoTArray<SurfaceDescriptor, NUM_BUFFER_SLOTS> freeList;
{
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
// it is not really an error to disconnect after the surface
// has been abandoned, it should just be a no-op.
return NO_ERROR;
}
switch (api) {
case NATIVE_WINDOW_API_EGL:
case NATIVE_WINDOW_API_CPU:
case NATIVE_WINDOW_API_MEDIA:
case NATIVE_WINDOW_API_CAMERA:
if (mConnectedApi == api) {
mQueue.clear();
freeAllBuffersLocked(freeList);
mConnectedApi = NO_CONNECTED_API;
mDequeueCondition.signal();
} else {
CNW_LOGE("disconnect: connected to another api (cur=%d, req=%d)",
mConnectedApi, api);
err = -EINVAL;
}
break;
default:
CNW_LOGE("disconnect: unknown API %d", api);
err = -EINVAL;
break;
}
}
releaseBufferFreeListUnlocked(freeList);
return err;
}
status_t GonkNativeWindow::setScalingMode(int mode) {
return OK;
}
void GonkNativeWindow::setNewFrameCallback(
GonkNativeWindowNewFrameCallback* aCallback) {
CNW_LOGD("setNewFrameCallback");
Mutex::Autolock lock(mMutex);
mNewFrameCallback = aCallback;
}
int GonkNativeWindow::query(int what, int* outValue)
{
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
CNW_LOGE("query: GonkNativeWindow has been abandoned!");
return NO_INIT;
}
int value;
switch (what) {
case NATIVE_WINDOW_WIDTH:
value = mDefaultWidth;
break;
case NATIVE_WINDOW_HEIGHT:
value = mDefaultHeight;
break;
case NATIVE_WINDOW_FORMAT:
value = mPixelFormat;
break;
case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
value = MIN_UNDEQUEUED_BUFFERS;
break;
default:
return BAD_VALUE;
}
outValue[0] = value;
return NO_ERROR;
}
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