gecko-dev/dom/camera/GonkNativeWindow.cpp

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C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=4 et sw=4 tw=80: */
/*
* 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/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(GonkNativeWindowNewFrameCallback* aCallback)
: mNewFrameCallback(aCallback)
{
GonkNativeWindow::init();
}
GonkNativeWindow::GonkNativeWindow()
: mNewFrameCallback(nullptr)
{
GonkNativeWindow::init();
}
GonkNativeWindow::~GonkNativeWindow()
{
freeAllBuffersLocked();
}
void GonkNativeWindow::abandon()
{
Mutex::Autolock lock(mMutex);
++mGeneration;
CNW_LOGD("abandon: new generation %d", mGeneration);
freeAllBuffersLocked();
mDequeueCondition.signal();
}
void GonkNativeWindow::init()
{
// Initialize the ANativeWindow function pointers.
ANativeWindow::setSwapInterval = hook_setSwapInterval;
ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
ANativeWindow::cancelBuffer = hook_cancelBuffer;
ANativeWindow::lockBuffer = hook_lockBuffer;
ANativeWindow::queueBuffer = hook_queueBuffer;
ANativeWindow::query = hook_query;
ANativeWindow::perform = hook_perform;
mDefaultWidth = 0;
mDefaultHeight = 0;
mPixelFormat = 0;
mUsage = 0;
mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
mBufferCount = MIN_BUFFER_SLOTS;
mFrameCounter = 0;
mGeneration = 0;
}
int GonkNativeWindow::hook_setSwapInterval(ANativeWindow* window, int interval)
{
GonkNativeWindow* c = getSelf(window);
return c->setSwapInterval(interval);
}
int GonkNativeWindow::hook_dequeueBuffer(ANativeWindow* window,
ANativeWindowBuffer** buffer)
{
GonkNativeWindow* c = getSelf(window);
return c->dequeueBuffer(buffer);
}
int GonkNativeWindow::hook_cancelBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer)
{
GonkNativeWindow* c = getSelf(window);
return c->cancelBuffer(buffer);
}
int GonkNativeWindow::hook_lockBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer)
{
GonkNativeWindow* c = getSelf(window);
return c->lockBuffer(buffer);
}
int GonkNativeWindow::hook_queueBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer)
{
GonkNativeWindow* c = getSelf(window);
return c->queueBuffer(buffer);
}
int GonkNativeWindow::hook_query(const ANativeWindow* window,
int what, int* value)
{
const GonkNativeWindow* c = getSelf(window);
return c->query(what, value);
}
int GonkNativeWindow::hook_perform(ANativeWindow* window, int operation, ...)
{
va_list args;
va_start(args, operation);
GonkNativeWindow* c = getSelf(window);
return c->perform(operation, args);
}
void GonkNativeWindow::freeBufferLocked(int i)
{
ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
if (mSlots[i].mGraphicBuffer != NULL) {
// Don't destroy the gralloc buffer if it is still in the
// video stream awaiting rendering.
if (mSlots[i].mBufferState != BufferSlot::RENDERING) {
ibc->DeallocSurfaceDescriptorGralloc(mSlots[i].mSurfaceDescriptor);
}
mSlots[i].mGraphicBuffer = NULL;
mSlots[i].mBufferState = BufferSlot::FREE;
mSlots[i].mFrameNumber = 0;
}
}
void GonkNativeWindow::freeAllBuffersLocked()
{
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
freeBufferLocked(i);
}
}
int GonkNativeWindow::setBufferCount(int bufferCount) {
CNW_LOGD("setBufferCount: count=%d", bufferCount);
Mutex::Autolock lock(mMutex);
if (bufferCount > NUM_BUFFER_SLOTS) {
CNW_LOGE("setBufferCount: bufferCount larger than slots available");
return BAD_VALUE;
}
// special-case, nothing to do
if (bufferCount == mBufferCount) {
return OK;
}
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 or sent buffers to
// video stream
for (int i=0 ; i<mBufferCount ; i++) {
if (mSlots[i].mBufferState == BufferSlot::DEQUEUED ||
mSlots[i].mBufferState == BufferSlot::RENDERING) {
CNW_LOGE("setBufferCount: client owns some buffers");
return -EINVAL;
}
}
if (bufferCount > mBufferCount) {
// easy, we just have more buffers
mBufferCount = bufferCount;
mDequeueCondition.signal();
return OK;
}
// reducing the number of buffers
// here we're guaranteed that the client doesn't have dequeued buffers
// and will release all of its buffer references.
freeAllBuffersLocked();
mBufferCount = bufferCount;
mDequeueCondition.signal();
return OK;
}
int GonkNativeWindow::dequeueBuffer(android_native_buffer_t** buffer)
{
Mutex::Autolock lock(mMutex);
int found = -1;
int dequeuedCount = 0;
bool tryAgain = true;
CNW_LOGD("dequeueBuffer: E");
while (tryAgain) {
// look for a free buffer to give to the client
found = INVALID_BUFFER_SLOT;
dequeuedCount = 0;
for (int i = 0; i < mBufferCount; i++) {
const int state = mSlots[i].mBufferState;
if (state == BufferSlot::DEQUEUED) {
dequeuedCount++;
}
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.
*/
bool isOlder = mSlots[i].mFrameNumber < mSlots[found].mFrameNumber;
if (found < 0 || isOlder) {
found = i;
}
}
}
// 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;
}
const int buf = found;
// buffer is now in DEQUEUED
mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
const sp<GraphicBuffer>& gbuf(mSlots[buf].mGraphicBuffer);
if (gbuf == NULL) {
status_t error;
SurfaceDescriptor buffer;
ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
ibc->AllocSurfaceDescriptorGralloc(gfxIntSize(mDefaultWidth, mDefaultHeight),
mPixelFormat,
mUsage,
&buffer);
sp<GraphicBuffer> graphicBuffer =
GrallocBufferActor::GetFrom(buffer.get_SurfaceDescriptorGralloc());
if (!graphicBuffer.get()) {
return -ENOMEM;
}
error = graphicBuffer->initCheck();
if (error != NO_ERROR) {
CNW_LOGE("dequeueBuffer: createGraphicBuffer failed with error %d",error);
return error;
}
mSlots[buf].mGraphicBuffer = graphicBuffer;
mSlots[buf].mSurfaceDescriptor = buffer;
mSlots[buf].mSurfaceDescriptor.get_SurfaceDescriptorGralloc().external() = true;
}
*buffer = mSlots[buf].mGraphicBuffer.get();
CNW_LOGD("dequeueBuffer: returning slot=%d buf=%p ", buf,
mSlots[buf].mGraphicBuffer->handle );
CNW_LOGD("dequeueBuffer: X");
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;
}
int GonkNativeWindow::queueBuffer(ANativeWindowBuffer* buffer)
{
{
Mutex::Autolock lock(mMutex);
CNW_LOGD("queueBuffer: E");
int buf = getSlotFromBufferLocked(buffer);
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;
}
int64_t timestamp;
if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
} else {
timestamp = mTimestamp;
}
mSlots[buf].mBufferState = BufferSlot::QUEUED;
mSlots[buf].mTimestamp = timestamp;
mFrameCounter++;
mSlots[buf].mFrameNumber = mFrameCounter;
mDequeueCondition.signal();
}
// 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);
int found = -1;
for (int i = 0; i < mBufferCount; i++) {
const int state = mSlots[i].mBufferState;
if (state == BufferSlot::QUEUED) {
if (found < 0 ||
mSlots[i].mFrameNumber < mSlots[found].mFrameNumber) {
found = i;
}
}
}
if (found < 0) {
mDequeueCondition.signal();
return NULL;
}
mSlots[found].mBufferState = BufferSlot::RENDERING;
nsRefPtr<GraphicBufferLocked> ret =
new CameraGraphicBuffer(this, found, mGeneration, mSlots[found].mSurfaceDescriptor);
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 (aGeneration != mGeneration) {
CNW_LOGD("returnBuffer: buffer is from generation %d (current is %d)",
aGeneration, mGeneration);
return false;
}
if (aIndex < 0 || 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;
}
int GonkNativeWindow::lockBuffer(ANativeWindowBuffer* buffer)
{
CNW_LOGD("GonkNativeWindow::lockBuffer");
Mutex::Autolock lock(mMutex);
return OK;
}
int GonkNativeWindow::cancelBuffer(ANativeWindowBuffer* buffer)
{
Mutex::Autolock lock(mMutex);
int buf = getSlotFromBufferLocked(buffer);
CNW_LOGD("cancelBuffer: slot=%d", buf);
if (buf < 0 || buf >= mBufferCount) {
CNW_LOGE("cancelBuffer: slot index out of range [0, %d]: %d",
mBufferCount, buf);
return -EINVAL;
} 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 -EINVAL;
}
mSlots[buf].mBufferState = BufferSlot::FREE;
mSlots[buf].mFrameNumber = 0;
mDequeueCondition.signal();
return OK;
}
int GonkNativeWindow::perform(int operation, va_list args)
{
switch (operation) {
case NATIVE_WINDOW_CONNECT:
// deprecated. must return NO_ERROR.
return NO_ERROR;
case NATIVE_WINDOW_DISCONNECT:
// deprecated. must return NO_ERROR.
return NO_ERROR;
case NATIVE_WINDOW_SET_USAGE:
return dispatchSetUsage(args);
case NATIVE_WINDOW_SET_BUFFER_COUNT:
return dispatchSetBufferCount(args);
case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
return dispatchSetBuffersGeometry(args);
case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
return dispatchSetBuffersTimestamp(args);
case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
return dispatchSetBuffersDimensions(args);
case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
return dispatchSetBuffersFormat(args);
case NATIVE_WINDOW_SET_CROP:
case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
case NATIVE_WINDOW_SET_SCALING_MODE:
case NATIVE_WINDOW_LOCK:
case NATIVE_WINDOW_UNLOCK_AND_POST:
case NATIVE_WINDOW_API_CONNECT:
case NATIVE_WINDOW_API_DISCONNECT:
default:
return INVALID_OPERATION;
}
}
int GonkNativeWindow::query(int what, int* outValue) const
{
Mutex::Autolock lock(mMutex);
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;
}
int GonkNativeWindow::setSwapInterval(int interval)
{
return NO_ERROR;
}
int GonkNativeWindow::dispatchSetUsage(va_list args)
{
int usage = va_arg(args, int);
return setUsage(usage);
}
int GonkNativeWindow::dispatchSetBufferCount(va_list args)
{
size_t bufferCount = va_arg(args, size_t);
return setBufferCount(bufferCount);
}
int GonkNativeWindow::dispatchSetBuffersGeometry(va_list args)
{
int w = va_arg(args, int);
int h = va_arg(args, int);
int f = va_arg(args, int);
int err = setBuffersDimensions(w, h);
if (err != 0) {
return err;
}
return setBuffersFormat(f);
}
int GonkNativeWindow::dispatchSetBuffersDimensions(va_list args)
{
int w = va_arg(args, int);
int h = va_arg(args, int);
return setBuffersDimensions(w, h);
}
int GonkNativeWindow::dispatchSetBuffersFormat(va_list args)
{
int f = va_arg(args, int);
return setBuffersFormat(f);
}
int GonkNativeWindow::dispatchSetBuffersTimestamp(va_list args)
{
int64_t timestamp = va_arg(args, int64_t);
return setBuffersTimestamp(timestamp);
}
int GonkNativeWindow::setUsage(uint32_t reqUsage)
{
CNW_LOGD("GonkNativeWindow::setUsage");
Mutex::Autolock lock(mMutex);
mUsage = reqUsage;
return OK;
}
int GonkNativeWindow::setBuffersDimensions(int w, int h)
{
CNW_LOGD("GonkNativeWindow::setBuffersDimensions");
Mutex::Autolock lock(mMutex);
if (w<0 || h<0)
return BAD_VALUE;
if ((w && !h) || (!w && h))
return BAD_VALUE;
mDefaultWidth = w;
mDefaultHeight = h;
return OK;
}
int GonkNativeWindow::setBuffersFormat(int format)
{
CNW_LOGD("GonkNativeWindow::setBuffersFormat");
Mutex::Autolock lock(mMutex);
if (format<0)
return BAD_VALUE;
mPixelFormat = format;
return NO_ERROR;
}
int GonkNativeWindow::setBuffersTimestamp(int64_t timestamp)
{
CNW_LOGD("GonkNativeWindow::setBuffersTimestamp");
Mutex::Autolock lock(mMutex);
mTimestamp = timestamp;
return OK;
}