mirror of
https://github.com/mozilla/gecko-dev.git
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596 lines
17 KiB
C++
596 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set ts=4 et sw=4 tw=80: */
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/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "base/basictypes.h"
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#include "GonkCameraHwMgr.h"
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#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
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#include "mozilla/layers/ImageBridgeChild.h"
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#include "GonkNativeWindow.h"
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#include "nsDebug.h"
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/**
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* DOM_CAMERA_LOGI() is enabled in debug builds, and turned on by setting
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* NSPR_LOG_MODULES=Camera:N environment variable, where N >= 3.
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*
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* CNW_LOGE() is always enabled.
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*/
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#define CNW_LOGD(...) DOM_CAMERA_LOGI(__VA_ARGS__)
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#define CNW_LOGE(...) {(void)printf_stderr(__VA_ARGS__);}
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using namespace android;
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using namespace mozilla::layers;
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GonkNativeWindow::GonkNativeWindow(GonkNativeWindowNewFrameCallback* aCallback)
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: mNewFrameCallback(aCallback)
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{
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GonkNativeWindow::init();
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}
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GonkNativeWindow::GonkNativeWindow()
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: mNewFrameCallback(nullptr)
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{
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GonkNativeWindow::init();
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}
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GonkNativeWindow::~GonkNativeWindow()
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{
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freeAllBuffersLocked();
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}
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void GonkNativeWindow::abandon()
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{
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Mutex::Autolock lock(mMutex);
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++mGeneration;
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CNW_LOGD("abandon: new generation %d", mGeneration);
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freeAllBuffersLocked();
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mDequeueCondition.signal();
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}
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void GonkNativeWindow::init()
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{
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// Initialize the ANativeWindow function pointers.
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ANativeWindow::setSwapInterval = hook_setSwapInterval;
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ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
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ANativeWindow::cancelBuffer = hook_cancelBuffer;
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ANativeWindow::lockBuffer = hook_lockBuffer;
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ANativeWindow::queueBuffer = hook_queueBuffer;
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ANativeWindow::query = hook_query;
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ANativeWindow::perform = hook_perform;
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mDefaultWidth = 0;
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mDefaultHeight = 0;
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mPixelFormat = 0;
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mUsage = 0;
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mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
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mBufferCount = MIN_BUFFER_SLOTS;
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mFrameCounter = 0;
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mGeneration = 0;
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}
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int GonkNativeWindow::hook_setSwapInterval(ANativeWindow* window, int interval)
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{
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GonkNativeWindow* c = getSelf(window);
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return c->setSwapInterval(interval);
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}
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int GonkNativeWindow::hook_dequeueBuffer(ANativeWindow* window,
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ANativeWindowBuffer** buffer)
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{
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GonkNativeWindow* c = getSelf(window);
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return c->dequeueBuffer(buffer);
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}
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int GonkNativeWindow::hook_cancelBuffer(ANativeWindow* window,
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ANativeWindowBuffer* buffer)
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{
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GonkNativeWindow* c = getSelf(window);
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return c->cancelBuffer(buffer);
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}
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int GonkNativeWindow::hook_lockBuffer(ANativeWindow* window,
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ANativeWindowBuffer* buffer)
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{
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GonkNativeWindow* c = getSelf(window);
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return c->lockBuffer(buffer);
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}
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int GonkNativeWindow::hook_queueBuffer(ANativeWindow* window,
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ANativeWindowBuffer* buffer)
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{
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GonkNativeWindow* c = getSelf(window);
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return c->queueBuffer(buffer);
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}
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int GonkNativeWindow::hook_query(const ANativeWindow* window,
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int what, int* value)
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{
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const GonkNativeWindow* c = getSelf(window);
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return c->query(what, value);
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}
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int GonkNativeWindow::hook_perform(ANativeWindow* window, int operation, ...)
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{
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va_list args;
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va_start(args, operation);
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GonkNativeWindow* c = getSelf(window);
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return c->perform(operation, args);
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}
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void GonkNativeWindow::freeBufferLocked(int i)
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{
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ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
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if (mSlots[i].mGraphicBuffer != NULL) {
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// Don't destroy the gralloc buffer if it is still in the
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// video stream awaiting rendering.
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if (mSlots[i].mBufferState != BufferSlot::RENDERING) {
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ibc->DeallocSurfaceDescriptorGralloc(mSlots[i].mSurfaceDescriptor);
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}
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mSlots[i].mGraphicBuffer = NULL;
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mSlots[i].mBufferState = BufferSlot::FREE;
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mSlots[i].mFrameNumber = 0;
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}
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}
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void GonkNativeWindow::freeAllBuffersLocked()
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{
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for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
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freeBufferLocked(i);
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}
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}
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int GonkNativeWindow::setBufferCount(int bufferCount) {
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CNW_LOGD("setBufferCount: count=%d", bufferCount);
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Mutex::Autolock lock(mMutex);
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if (bufferCount > NUM_BUFFER_SLOTS) {
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CNW_LOGE("setBufferCount: bufferCount larger than slots available");
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return BAD_VALUE;
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}
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// special-case, nothing to do
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if (bufferCount == mBufferCount) {
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return OK;
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}
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if (bufferCount < MIN_BUFFER_SLOTS) {
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CNW_LOGE("setBufferCount: requested buffer count (%d) is less than "
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"minimum (%d)", bufferCount, MIN_BUFFER_SLOTS);
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return BAD_VALUE;
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}
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// Error out if the user has dequeued buffers or sent buffers to
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// video stream
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for (int i=0 ; i<mBufferCount ; i++) {
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if (mSlots[i].mBufferState == BufferSlot::DEQUEUED ||
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mSlots[i].mBufferState == BufferSlot::RENDERING) {
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CNW_LOGE("setBufferCount: client owns some buffers");
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return -EINVAL;
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}
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}
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if (bufferCount > mBufferCount) {
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// easy, we just have more buffers
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mBufferCount = bufferCount;
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mDequeueCondition.signal();
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return OK;
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}
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// reducing the number of buffers
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// here we're guaranteed that the client doesn't have dequeued buffers
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// and will release all of its buffer references.
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freeAllBuffersLocked();
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mBufferCount = bufferCount;
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mDequeueCondition.signal();
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return OK;
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}
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int GonkNativeWindow::dequeueBuffer(android_native_buffer_t** buffer)
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{
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Mutex::Autolock lock(mMutex);
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int found = -1;
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int dequeuedCount = 0;
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bool tryAgain = true;
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CNW_LOGD("dequeueBuffer: E");
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while (tryAgain) {
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// look for a free buffer to give to the client
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found = INVALID_BUFFER_SLOT;
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dequeuedCount = 0;
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for (int i = 0; i < mBufferCount; i++) {
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const int state = mSlots[i].mBufferState;
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if (state == BufferSlot::DEQUEUED) {
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dequeuedCount++;
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}
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else if (state == BufferSlot::FREE) {
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/* We return the oldest of the free buffers to avoid
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* stalling the producer if possible. This is because
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* the consumer may still have pending reads of the
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* buffers in flight.
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*/
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bool isOlder = mSlots[i].mFrameNumber < mSlots[found].mFrameNumber;
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if (found < 0 || isOlder) {
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found = i;
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}
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}
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}
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// we're in synchronous mode and didn't find a buffer, we need to
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// wait for some buffers to be consumed
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tryAgain = (found == INVALID_BUFFER_SLOT);
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if (tryAgain) {
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CNW_LOGD("dequeueBuffer: Try again");
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mDequeueCondition.wait(mMutex);
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CNW_LOGD("dequeueBuffer: Now");
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}
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}
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if (found == INVALID_BUFFER_SLOT) {
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// This should not happen.
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CNW_LOGE("dequeueBuffer: no available buffer slots");
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return -EBUSY;
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}
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const int buf = found;
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// buffer is now in DEQUEUED
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mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
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const sp<GraphicBuffer>& gbuf(mSlots[buf].mGraphicBuffer);
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if (gbuf == NULL) {
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status_t error;
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SurfaceDescriptor buffer;
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ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
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ibc->AllocSurfaceDescriptorGralloc(gfxIntSize(mDefaultWidth, mDefaultHeight),
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mPixelFormat,
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mUsage,
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&buffer);
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sp<GraphicBuffer> graphicBuffer =
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GrallocBufferActor::GetFrom(buffer.get_SurfaceDescriptorGralloc());
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if (!graphicBuffer.get()) {
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return -ENOMEM;
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}
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error = graphicBuffer->initCheck();
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if (error != NO_ERROR) {
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CNW_LOGE("dequeueBuffer: createGraphicBuffer failed with error %d",error);
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return error;
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}
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mSlots[buf].mGraphicBuffer = graphicBuffer;
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mSlots[buf].mSurfaceDescriptor = buffer;
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mSlots[buf].mSurfaceDescriptor.get_SurfaceDescriptorGralloc().external() = true;
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}
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*buffer = mSlots[buf].mGraphicBuffer.get();
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CNW_LOGD("dequeueBuffer: returning slot=%d buf=%p ", buf,
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mSlots[buf].mGraphicBuffer->handle );
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CNW_LOGD("dequeueBuffer: X");
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return NO_ERROR;
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}
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int GonkNativeWindow::getSlotFromBufferLocked(
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android_native_buffer_t* buffer) const
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{
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if (buffer == NULL) {
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CNW_LOGE("getSlotFromBufferLocked: encountered NULL buffer");
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return BAD_VALUE;
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}
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for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
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if (mSlots[i].mGraphicBuffer != NULL && mSlots[i].mGraphicBuffer->handle == buffer->handle) {
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return i;
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}
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}
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CNW_LOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
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return BAD_VALUE;
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}
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mozilla::layers::SurfaceDescriptor *
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GonkNativeWindow::getSurfaceDescriptorFromBuffer(ANativeWindowBuffer* buffer)
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{
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int buf = getSlotFromBufferLocked(buffer);
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if (buf < 0 || buf >= mBufferCount ||
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mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
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return nullptr;
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}
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return &mSlots[buf].mSurfaceDescriptor;
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}
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int GonkNativeWindow::queueBuffer(ANativeWindowBuffer* buffer)
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{
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{
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Mutex::Autolock lock(mMutex);
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CNW_LOGD("queueBuffer: E");
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int buf = getSlotFromBufferLocked(buffer);
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if (buf < 0 || buf >= mBufferCount) {
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CNW_LOGE("queueBuffer: slot index out of range [0, %d]: %d",
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mBufferCount, buf);
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return -EINVAL;
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} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
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CNW_LOGE("queueBuffer: slot %d is not owned by the client "
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"(state=%d)", buf, mSlots[buf].mBufferState);
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return -EINVAL;
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}
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int64_t timestamp;
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if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
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timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
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} else {
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timestamp = mTimestamp;
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}
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mSlots[buf].mBufferState = BufferSlot::QUEUED;
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mSlots[buf].mTimestamp = timestamp;
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mFrameCounter++;
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mSlots[buf].mFrameNumber = mFrameCounter;
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mDequeueCondition.signal();
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}
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// OnNewFrame might call lockCurrentBuffer so we must release the
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// mutex first.
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if (mNewFrameCallback) {
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mNewFrameCallback->OnNewFrame();
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}
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CNW_LOGD("queueBuffer: X");
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return OK;
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}
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already_AddRefed<GraphicBufferLocked>
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GonkNativeWindow::getCurrentBuffer()
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{
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CNW_LOGD("GonkNativeWindow::getCurrentBuffer");
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Mutex::Autolock lock(mMutex);
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int found = -1;
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for (int i = 0; i < mBufferCount; i++) {
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const int state = mSlots[i].mBufferState;
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if (state == BufferSlot::QUEUED) {
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if (found < 0 ||
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mSlots[i].mFrameNumber < mSlots[found].mFrameNumber) {
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found = i;
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}
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}
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}
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if (found < 0) {
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mDequeueCondition.signal();
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return NULL;
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}
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mSlots[found].mBufferState = BufferSlot::RENDERING;
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nsRefPtr<GraphicBufferLocked> ret =
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new CameraGraphicBuffer(this, found, mGeneration, mSlots[found].mSurfaceDescriptor);
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mDequeueCondition.signal();
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return ret.forget();
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}
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bool
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GonkNativeWindow::returnBuffer(uint32_t aIndex, uint32_t aGeneration)
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{
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CNW_LOGD("GonkNativeWindow::returnBuffer: slot=%d (generation=%d)", aIndex, aGeneration);
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Mutex::Autolock lock(mMutex);
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if (aGeneration != mGeneration) {
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CNW_LOGD("returnBuffer: buffer is from generation %d (current is %d)",
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aGeneration, mGeneration);
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return false;
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}
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if (aIndex < 0 || aIndex >= mBufferCount) {
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CNW_LOGE("returnBuffer: slot index out of range [0, %d]: %d",
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mBufferCount, aIndex);
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return false;
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}
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if (mSlots[aIndex].mBufferState != BufferSlot::RENDERING) {
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CNW_LOGE("returnBuffer: slot %d is not owned by the compositor (state=%d)",
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aIndex, mSlots[aIndex].mBufferState);
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return false;
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}
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mSlots[aIndex].mBufferState = BufferSlot::FREE;
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mDequeueCondition.signal();
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return true;
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}
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int GonkNativeWindow::lockBuffer(ANativeWindowBuffer* buffer)
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{
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CNW_LOGD("GonkNativeWindow::lockBuffer");
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Mutex::Autolock lock(mMutex);
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return OK;
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}
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int GonkNativeWindow::cancelBuffer(ANativeWindowBuffer* buffer)
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{
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Mutex::Autolock lock(mMutex);
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int buf = getSlotFromBufferLocked(buffer);
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CNW_LOGD("cancelBuffer: slot=%d", buf);
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if (buf < 0 || buf >= mBufferCount) {
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CNW_LOGE("cancelBuffer: slot index out of range [0, %d]: %d",
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mBufferCount, buf);
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return -EINVAL;
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} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
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CNW_LOGE("cancelBuffer: slot %d is not owned by the client (state=%d)",
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buf, mSlots[buf].mBufferState);
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return -EINVAL;
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}
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mSlots[buf].mBufferState = BufferSlot::FREE;
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mSlots[buf].mFrameNumber = 0;
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mDequeueCondition.signal();
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return OK;
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}
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int GonkNativeWindow::perform(int operation, va_list args)
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{
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switch (operation) {
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case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
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case NATIVE_WINDOW_SET_BUFFERS_SIZE:
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case NATIVE_WINDOW_SET_SCALING_MODE:
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case NATIVE_WINDOW_SET_CROP:
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case NATIVE_WINDOW_CONNECT:
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case NATIVE_WINDOW_DISCONNECT:
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// deprecated. must return NO_ERROR.
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return NO_ERROR;
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case NATIVE_WINDOW_SET_USAGE:
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return dispatchSetUsage(args);
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case NATIVE_WINDOW_SET_BUFFER_COUNT:
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return dispatchSetBufferCount(args);
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case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
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return dispatchSetBuffersGeometry(args);
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case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
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return dispatchSetBuffersTimestamp(args);
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case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
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return dispatchSetBuffersDimensions(args);
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case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
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return dispatchSetBuffersFormat(args);
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case NATIVE_WINDOW_LOCK:
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case NATIVE_WINDOW_UNLOCK_AND_POST:
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case NATIVE_WINDOW_API_CONNECT:
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case NATIVE_WINDOW_API_DISCONNECT:
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default:
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NS_WARNING("Unsupported operation");
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return INVALID_OPERATION;
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}
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}
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int GonkNativeWindow::query(int what, int* outValue) const
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{
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Mutex::Autolock lock(mMutex);
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int value;
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switch (what) {
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case NATIVE_WINDOW_WIDTH:
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value = mDefaultWidth;
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break;
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case NATIVE_WINDOW_HEIGHT:
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value = mDefaultHeight;
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break;
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case NATIVE_WINDOW_FORMAT:
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value = mPixelFormat;
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break;
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case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
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value = MIN_UNDEQUEUED_BUFFERS;
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break;
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default:
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return BAD_VALUE;
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}
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outValue[0] = value;
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return NO_ERROR;
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}
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int GonkNativeWindow::setSwapInterval(int interval)
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{
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return NO_ERROR;
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}
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int GonkNativeWindow::dispatchSetUsage(va_list args)
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{
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int usage = va_arg(args, int);
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return setUsage(usage);
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}
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int GonkNativeWindow::dispatchSetBufferCount(va_list args)
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{
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size_t bufferCount = va_arg(args, size_t);
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return setBufferCount(bufferCount);
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}
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|
|
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;
|
|
}
|