389 lines
11 KiB
C++
389 lines
11 KiB
C++
/*
|
|
**
|
|
** Copyright 2008, The Android Open Source Project
|
|
**
|
|
** 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.
|
|
*/
|
|
|
|
#define LOG_TAG "CameraHardwareStub"
|
|
#include <utils/Log.h>
|
|
|
|
#include "CameraHardwareStub.h"
|
|
#include <utils/threads.h>
|
|
#include <fcntl.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include "CannedJpeg.h"
|
|
|
|
namespace android {
|
|
|
|
CameraHardwareStub::CameraHardwareStub()
|
|
: mParameters(),
|
|
mPreviewHeap(0),
|
|
mRawHeap(0),
|
|
mFakeCamera(0),
|
|
mPreviewFrameSize(0),
|
|
mRawPictureCallback(0),
|
|
mJpegPictureCallback(0),
|
|
mPictureCallbackCookie(0),
|
|
mPreviewCallback(0),
|
|
mPreviewCallbackCookie(0),
|
|
mAutoFocusCallback(0),
|
|
mAutoFocusCallbackCookie(0),
|
|
mCurrentPreviewFrame(0)
|
|
{
|
|
initDefaultParameters();
|
|
}
|
|
|
|
void CameraHardwareStub::initDefaultParameters()
|
|
{
|
|
CameraParameters p;
|
|
|
|
p.setPreviewSize(176, 144);
|
|
p.setPreviewFrameRate(15);
|
|
p.setPreviewFormat("yuv422sp");
|
|
|
|
p.setPictureSize(kCannedJpegWidth, kCannedJpegHeight);
|
|
p.setPictureFormat("jpeg");
|
|
|
|
if (setParameters(p) != NO_ERROR) {
|
|
LOGE("Failed to set default parameters?!");
|
|
}
|
|
}
|
|
|
|
void CameraHardwareStub::initHeapLocked()
|
|
{
|
|
// Create raw heap.
|
|
int picture_width, picture_height;
|
|
mParameters.getPictureSize(&picture_width, &picture_height);
|
|
mRawHeap = new MemoryHeapBase(picture_width * 2 * picture_height);
|
|
|
|
int preview_width, preview_height;
|
|
mParameters.getPreviewSize(&preview_width, &preview_height);
|
|
LOGD("initHeapLocked: preview size=%dx%d", preview_width, preview_height);
|
|
|
|
// Note that we enforce yuv422 in setParameters().
|
|
int how_big = preview_width * preview_height * 2;
|
|
|
|
// If we are being reinitialized to the same size as before, no
|
|
// work needs to be done.
|
|
if (how_big == mPreviewFrameSize)
|
|
return;
|
|
|
|
mPreviewFrameSize = how_big;
|
|
|
|
// Make a new mmap'ed heap that can be shared across processes.
|
|
// use code below to test with pmem
|
|
mPreviewHeap = new MemoryHeapBase(mPreviewFrameSize * kBufferCount);
|
|
// Make an IMemory for each frame so that we can reuse them in callbacks.
|
|
for (int i = 0; i < kBufferCount; i++) {
|
|
mBuffers[i] = new MemoryBase(mPreviewHeap, i * mPreviewFrameSize, mPreviewFrameSize);
|
|
}
|
|
|
|
// Recreate the fake camera to reflect the current size.
|
|
delete mFakeCamera;
|
|
mFakeCamera = new FakeCamera(preview_width, preview_height);
|
|
}
|
|
|
|
CameraHardwareStub::~CameraHardwareStub()
|
|
{
|
|
delete mFakeCamera;
|
|
mFakeCamera = 0; // paranoia
|
|
singleton.clear();
|
|
}
|
|
|
|
sp<IMemoryHeap> CameraHardwareStub::getPreviewHeap() const
|
|
{
|
|
return mPreviewHeap;
|
|
}
|
|
|
|
sp<IMemoryHeap> CameraHardwareStub::getRawHeap() const
|
|
{
|
|
return mRawHeap;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
int CameraHardwareStub::previewThread()
|
|
{
|
|
mLock.lock();
|
|
// the attributes below can change under our feet...
|
|
|
|
int previewFrameRate = mParameters.getPreviewFrameRate();
|
|
|
|
// Find the offset within the heap of the current buffer.
|
|
ssize_t offset = mCurrentPreviewFrame * mPreviewFrameSize;
|
|
|
|
sp<MemoryHeapBase> heap = mPreviewHeap;
|
|
|
|
// this assumes the internal state of fake camera doesn't change
|
|
// (or is thread safe)
|
|
FakeCamera* fakeCamera = mFakeCamera;
|
|
|
|
sp<MemoryBase> buffer = mBuffers[mCurrentPreviewFrame];
|
|
|
|
mLock.unlock();
|
|
|
|
// TODO: here check all the conditions that could go wrong
|
|
if (buffer != 0) {
|
|
// Calculate how long to wait between frames.
|
|
int delay = (int)(1000000.0f / float(previewFrameRate));
|
|
|
|
// This is always valid, even if the client died -- the memory
|
|
// is still mapped in our process.
|
|
void *base = heap->base();
|
|
|
|
// Fill the current frame with the fake camera.
|
|
uint8_t *frame = ((uint8_t *)base) + offset;
|
|
fakeCamera->getNextFrameAsYuv422(frame);
|
|
|
|
//LOGV("previewThread: generated frame to buffer %d", mCurrentPreviewFrame);
|
|
|
|
// Notify the client of a new frame.
|
|
mPreviewCallback(buffer, mPreviewCallbackCookie);
|
|
|
|
// Advance the buffer pointer.
|
|
mCurrentPreviewFrame = (mCurrentPreviewFrame + 1) % kBufferCount;
|
|
|
|
// Wait for it...
|
|
usleep(delay);
|
|
}
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::startPreview(preview_callback cb, void* user)
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
if (mPreviewThread != 0) {
|
|
// already running
|
|
return INVALID_OPERATION;
|
|
}
|
|
mPreviewCallback = cb;
|
|
mPreviewCallbackCookie = user;
|
|
mPreviewThread = new PreviewThread(this);
|
|
return NO_ERROR;
|
|
}
|
|
|
|
void CameraHardwareStub::stopPreview()
|
|
{
|
|
sp<PreviewThread> previewThread;
|
|
|
|
{ // scope for the lock
|
|
Mutex::Autolock lock(mLock);
|
|
previewThread = mPreviewThread;
|
|
}
|
|
|
|
// don't hold the lock while waiting for the thread to quit
|
|
if (previewThread != 0) {
|
|
previewThread->requestExitAndWait();
|
|
}
|
|
|
|
Mutex::Autolock lock(mLock);
|
|
mPreviewThread.clear();
|
|
}
|
|
|
|
bool CameraHardwareStub::previewEnabled() {
|
|
return mPreviewThread != 0;
|
|
}
|
|
|
|
status_t CameraHardwareStub::startRecording(recording_callback cb, void* user)
|
|
{
|
|
return UNKNOWN_ERROR;
|
|
}
|
|
|
|
void CameraHardwareStub::stopRecording()
|
|
{
|
|
}
|
|
|
|
bool CameraHardwareStub::recordingEnabled()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
void CameraHardwareStub::releaseRecordingFrame(const sp<IMemory>& mem)
|
|
{
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
int CameraHardwareStub::beginAutoFocusThread(void *cookie)
|
|
{
|
|
CameraHardwareStub *c = (CameraHardwareStub *)cookie;
|
|
return c->autoFocusThread();
|
|
}
|
|
|
|
int CameraHardwareStub::autoFocusThread()
|
|
{
|
|
if (mAutoFocusCallback != NULL) {
|
|
mAutoFocusCallback(true, mAutoFocusCallbackCookie);
|
|
mAutoFocusCallback = NULL;
|
|
return NO_ERROR;
|
|
}
|
|
return UNKNOWN_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::autoFocus(autofocus_callback af_cb,
|
|
void *user)
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
|
|
if (mAutoFocusCallback != NULL) {
|
|
return mAutoFocusCallback == af_cb ? NO_ERROR : INVALID_OPERATION;
|
|
}
|
|
|
|
mAutoFocusCallback = af_cb;
|
|
mAutoFocusCallbackCookie = user;
|
|
if (createThread(beginAutoFocusThread, this) == false)
|
|
return UNKNOWN_ERROR;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
/*static*/ int CameraHardwareStub::beginPictureThread(void *cookie)
|
|
{
|
|
CameraHardwareStub *c = (CameraHardwareStub *)cookie;
|
|
return c->pictureThread();
|
|
}
|
|
|
|
int CameraHardwareStub::pictureThread()
|
|
{
|
|
if (mShutterCallback)
|
|
mShutterCallback(mPictureCallbackCookie);
|
|
|
|
if (mRawPictureCallback) {
|
|
//FIXME: use a canned YUV image!
|
|
// In the meantime just make another fake camera picture.
|
|
int w, h;
|
|
mParameters.getPictureSize(&w, &h);
|
|
sp<MemoryBase> mem = new MemoryBase(mRawHeap, 0, w * 2 * h);
|
|
FakeCamera cam(w, h);
|
|
cam.getNextFrameAsYuv422((uint8_t *)mRawHeap->base());
|
|
if (mRawPictureCallback)
|
|
mRawPictureCallback(mem, mPictureCallbackCookie);
|
|
}
|
|
|
|
if (mJpegPictureCallback) {
|
|
sp<MemoryHeapBase> heap = new MemoryHeapBase(kCannedJpegSize);
|
|
sp<MemoryBase> mem = new MemoryBase(heap, 0, kCannedJpegSize);
|
|
memcpy(heap->base(), kCannedJpeg, kCannedJpegSize);
|
|
if (mJpegPictureCallback)
|
|
mJpegPictureCallback(mem, mPictureCallbackCookie);
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::takePicture(shutter_callback shutter_cb,
|
|
raw_callback raw_cb,
|
|
jpeg_callback jpeg_cb,
|
|
void* user)
|
|
{
|
|
stopPreview();
|
|
mShutterCallback = shutter_cb;
|
|
mRawPictureCallback = raw_cb;
|
|
mJpegPictureCallback = jpeg_cb;
|
|
mPictureCallbackCookie = user;
|
|
if (createThread(beginPictureThread, this) == false)
|
|
return -1;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::cancelPicture(bool cancel_shutter,
|
|
bool cancel_raw,
|
|
bool cancel_jpeg)
|
|
{
|
|
if (cancel_shutter) mShutterCallback = NULL;
|
|
if (cancel_raw) mRawPictureCallback = NULL;
|
|
if (cancel_jpeg) mJpegPictureCallback = NULL;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::dump(int fd, const Vector<String16>& args) const
|
|
{
|
|
const size_t SIZE = 256;
|
|
char buffer[SIZE];
|
|
String8 result;
|
|
AutoMutex lock(&mLock);
|
|
if (mFakeCamera != 0) {
|
|
mFakeCamera->dump(fd);
|
|
mParameters.dump(fd, args);
|
|
snprintf(buffer, 255, " preview frame(%d), size (%d), running(%s)\n", mCurrentPreviewFrame, mPreviewFrameSize, mPreviewRunning?"true": "false");
|
|
result.append(buffer);
|
|
} else {
|
|
result.append("No camera client yet.\n");
|
|
}
|
|
write(fd, result.string(), result.size());
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t CameraHardwareStub::setParameters(const CameraParameters& params)
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
// XXX verify params
|
|
|
|
if (strcmp(params.getPreviewFormat(), "yuv422sp") != 0) {
|
|
LOGE("Only yuv422sp preview is supported");
|
|
return -1;
|
|
}
|
|
|
|
if (strcmp(params.getPictureFormat(), "jpeg") != 0) {
|
|
LOGE("Only jpeg still pictures are supported");
|
|
return -1;
|
|
}
|
|
|
|
int w, h;
|
|
params.getPictureSize(&w, &h);
|
|
if (w != kCannedJpegWidth && h != kCannedJpegHeight) {
|
|
LOGE("Still picture size must be size of canned JPEG (%dx%d)",
|
|
kCannedJpegWidth, kCannedJpegHeight);
|
|
return -1;
|
|
}
|
|
|
|
mParameters = params;
|
|
|
|
initHeapLocked();
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
CameraParameters CameraHardwareStub::getParameters() const
|
|
{
|
|
Mutex::Autolock lock(mLock);
|
|
return mParameters;
|
|
}
|
|
|
|
void CameraHardwareStub::release()
|
|
{
|
|
}
|
|
|
|
wp<CameraHardwareInterface> CameraHardwareStub::singleton;
|
|
|
|
sp<CameraHardwareInterface> CameraHardwareStub::createInstance()
|
|
{
|
|
if (singleton != 0) {
|
|
sp<CameraHardwareInterface> hardware = singleton.promote();
|
|
if (hardware != 0) {
|
|
return hardware;
|
|
}
|
|
}
|
|
sp<CameraHardwareInterface> hardware(new CameraHardwareStub());
|
|
singleton = hardware;
|
|
return hardware;
|
|
}
|
|
|
|
extern "C" sp<CameraHardwareInterface> openCameraHardware()
|
|
{
|
|
return CameraHardwareStub::createInstance();
|
|
}
|
|
|
|
}; // namespace android
|