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replicant-frameworks_native/libs/gui/SurfaceTexture.cpp
Jesse Hall 9504eb915c Fix race condition in ConsumerBase::addReleaseFence() 
This needs the ConsumerBase mutex locked, but wasn't locking it. Two
of the four places that called it already held the lock so were fine.
Now addReleaseFence() takes the lock itself, and I added
addReleaseFenceLocked() for the two already-locked callers, since in
one of them dropping the lock would be inconvenient.

Bug: 7289269
Change-Id: I7a5628adb516f8eec782aa6c14128202f96d7b0a
2012-10-05 14:40:50 -07:00

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/*
* Copyright (C) 2010 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 "SurfaceTexture"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <hardware/hardware.h>
#include <gui/IGraphicBufferAlloc.h>
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/SurfaceTexture.h>
#include <private/gui/ComposerService.h>
#include <utils/Log.h>
#include <utils/String8.h>
#include <utils/Trace.h>
// This compile option makes SurfaceTexture use the
// EGL_ANDROID_native_fence_sync extension to create Android native fences to
// signal when all GLES reads for a given buffer have completed. It is not
// compatible with using the EGL_KHR_fence_sync extension for the same
// purpose.
#ifdef USE_NATIVE_FENCE_SYNC
#ifdef USE_FENCE_SYNC
#error "USE_NATIVE_FENCE_SYNC and USE_FENCE_SYNC are incompatible"
#endif
static const bool useNativeFenceSync = true;
#else
static const bool useNativeFenceSync = false;
#endif
// This compile option makes SurfaceTexture use the EGL_ANDROID_sync_wait
// extension to insert server-side waits into the GLES command stream. This
// feature requires the EGL_ANDROID_native_fence_sync and
// EGL_ANDROID_wait_sync extensions.
#ifdef USE_WAIT_SYNC
static const bool useWaitSync = true;
#else
static const bool useWaitSync = false;
#endif
// Macros for including the SurfaceTexture name in log messages
#define ST_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
#define ST_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
#define ST_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
#define ST_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
#define ST_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
namespace android {
// Transform matrices
static float mtxIdentity[16] = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
};
static float mtxFlipH[16] = {
-1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
1, 0, 0, 1,
};
static float mtxFlipV[16] = {
1, 0, 0, 0,
0, -1, 0, 0,
0, 0, 1, 0,
0, 1, 0, 1,
};
static float mtxRot90[16] = {
0, 1, 0, 0,
-1, 0, 0, 0,
0, 0, 1, 0,
1, 0, 0, 1,
};
static float mtxRot180[16] = {
-1, 0, 0, 0,
0, -1, 0, 0,
0, 0, 1, 0,
1, 1, 0, 1,
};
static float mtxRot270[16] = {
0, -1, 0, 0,
1, 0, 0, 0,
0, 0, 1, 0,
0, 1, 0, 1,
};
static void mtxMul(float out[16], const float a[16], const float b[16]);
SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode,
GLenum texTarget, bool useFenceSync, const sp<BufferQueue> &bufferQueue) :
ConsumerBase(bufferQueue == 0 ? new BufferQueue(allowSynchronousMode) : bufferQueue),
mCurrentTransform(0),
mCurrentTimestamp(0),
mFilteringEnabled(true),
mTexName(tex),
#ifdef USE_FENCE_SYNC
mUseFenceSync(useFenceSync),
#else
mUseFenceSync(false),
#endif
mTexTarget(texTarget),
mEglDisplay(EGL_NO_DISPLAY),
mEglContext(EGL_NO_CONTEXT),
mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
mAttached(true)
{
ST_LOGV("SurfaceTexture");
memcpy(mCurrentTransformMatrix, mtxIdentity,
sizeof(mCurrentTransformMatrix));
mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
}
status_t SurfaceTexture::setDefaultMaxBufferCount(int bufferCount) {
Mutex::Autolock lock(mMutex);
return mBufferQueue->setDefaultMaxBufferCount(bufferCount);
}
status_t SurfaceTexture::setDefaultBufferSize(uint32_t w, uint32_t h)
{
Mutex::Autolock lock(mMutex);
mDefaultWidth = w;
mDefaultHeight = h;
return mBufferQueue->setDefaultBufferSize(w, h);
}
status_t SurfaceTexture::updateTexImage() {
return SurfaceTexture::updateTexImage(NULL, false);
}
status_t SurfaceTexture::acquireBufferLocked(BufferQueue::BufferItem *item) {
status_t err = ConsumerBase::acquireBufferLocked(item);
if (err != NO_ERROR) {
return err;
}
int slot = item->mBuf;
if (item->mGraphicBuffer != NULL) {
if (mEglSlots[slot].mEglImage != EGL_NO_IMAGE_KHR) {
eglDestroyImageKHR(mEglDisplay, mEglSlots[slot].mEglImage);
mEglSlots[slot].mEglImage = EGL_NO_IMAGE_KHR;
}
}
// Update the GL texture object. We may have to do this even when
// item.mGraphicBuffer == NULL, if we destroyed the EGLImage when
// detaching from a context but the buffer has not been re-allocated.
if (mEglSlots[slot].mEglImage == EGL_NO_IMAGE_KHR) {
EGLImageKHR image = createImage(mEglDisplay, mSlots[slot].mGraphicBuffer);
if (image == EGL_NO_IMAGE_KHR) {
return UNKNOWN_ERROR;
}
mEglSlots[slot].mEglImage = image;
}
return NO_ERROR;
}
status_t SurfaceTexture::releaseBufferLocked(int buf, EGLDisplay display,
EGLSyncKHR eglFence) {
status_t err = ConsumerBase::releaseBufferLocked(buf, mEglDisplay,
eglFence);
mEglSlots[buf].mEglFence = EGL_NO_SYNC_KHR;
return err;
}
status_t SurfaceTexture::updateTexImage(BufferRejecter* rejecter, bool skipSync) {
ATRACE_CALL();
ST_LOGV("updateTexImage");
Mutex::Autolock lock(mMutex);
status_t err = NO_ERROR;
if (mAbandoned) {
ST_LOGE("updateTexImage: SurfaceTexture is abandoned!");
return NO_INIT;
}
if (!mAttached) {
ST_LOGE("updateTexImage: SurfaceTexture is not attached to an OpenGL "
"ES context");
return INVALID_OPERATION;
}
EGLDisplay dpy = eglGetCurrentDisplay();
EGLContext ctx = eglGetCurrentContext();
if ((mEglDisplay != dpy && mEglDisplay != EGL_NO_DISPLAY) ||
dpy == EGL_NO_DISPLAY) {
ST_LOGE("updateTexImage: invalid current EGLDisplay");
return INVALID_OPERATION;
}
if ((mEglContext != ctx && mEglContext != EGL_NO_CONTEXT) ||
ctx == EGL_NO_CONTEXT) {
ST_LOGE("updateTexImage: invalid current EGLContext");
return INVALID_OPERATION;
}
mEglDisplay = dpy;
mEglContext = ctx;
BufferQueue::BufferItem item;
// In asynchronous mode the list is guaranteed to be one buffer
// deep, while in synchronous mode we use the oldest buffer.
err = acquireBufferLocked(&item);
if (err == NO_ERROR) {
int buf = item.mBuf;
// we call the rejecter here, in case the caller has a reason to
// not accept this buffer. this is used by SurfaceFlinger to
// reject buffers which have the wrong size
if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) {
releaseBufferLocked(buf, dpy, EGL_NO_SYNC_KHR);
glBindTexture(mTexTarget, mTexName);
return NO_ERROR;
}
GLint error;
while ((error = glGetError()) != GL_NO_ERROR) {
ST_LOGW("updateTexImage: clearing GL error: %#04x", error);
}
EGLImageKHR image = mEglSlots[buf].mEglImage;
glBindTexture(mTexTarget, mTexName);
glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);
while ((error = glGetError()) != GL_NO_ERROR) {
ST_LOGE("updateTexImage: error binding external texture image %p "
"(slot %d): %#04x", image, buf, error);
err = UNKNOWN_ERROR;
}
if (err == NO_ERROR) {
err = syncForReleaseLocked(dpy);
}
if (err != NO_ERROR) {
// Release the buffer we just acquired. It's not safe to
// release the old buffer, so instead we just drop the new frame.
releaseBufferLocked(buf, dpy, EGL_NO_SYNC_KHR);
return err;
}
ST_LOGV("updateTexImage: (slot=%d buf=%p) -> (slot=%d buf=%p)",
mCurrentTexture,
mCurrentTextureBuf != NULL ? mCurrentTextureBuf->handle : 0,
buf, mSlots[buf].mGraphicBuffer->handle);
// release old buffer
if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
status_t status = releaseBufferLocked(mCurrentTexture, dpy,
mEglSlots[mCurrentTexture].mEglFence);
if (status != NO_ERROR && status != BufferQueue::STALE_BUFFER_SLOT) {
ST_LOGE("updateTexImage: failed to release buffer: %s (%d)",
strerror(-status), status);
err = status;
}
}
// Update the SurfaceTexture state.
mCurrentTexture = buf;
mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
mCurrentCrop = item.mCrop;
mCurrentTransform = item.mTransform;
mCurrentScalingMode = item.mScalingMode;
mCurrentTimestamp = item.mTimestamp;
mCurrentFence = item.mFence;
if (!skipSync) {
// SurfaceFlinger needs to lazily perform GLES synchronization
// only when it's actually going to use GLES for compositing.
// Eventually SurfaceFlinger should have its own consumer class,
// but for now we'll just hack it in to SurfaceTexture.
// SurfaceFlinger is responsible for calling doGLFenceWait before
// texturing from this SurfaceTexture.
doGLFenceWaitLocked();
}
computeCurrentTransformMatrixLocked();
} else {
if (err < 0) {
ST_LOGE("updateTexImage: acquire failed: %s (%d)",
strerror(-err), err);
return err;
}
// We always bind the texture even if we don't update its contents.
glBindTexture(mTexTarget, mTexName);
return OK;
}
return err;
}
void SurfaceTexture::setReleaseFence(int fenceFd) {
sp<Fence> fence(new Fence(fenceFd));
if (fenceFd == -1 || mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT)
return;
status_t err = addReleaseFence(mCurrentTexture, fence);
if (err != OK) {
ST_LOGE("setReleaseFence: failed to add the fence: %s (%d)",
strerror(-err), err);
}
}
status_t SurfaceTexture::detachFromContext() {
ATRACE_CALL();
ST_LOGV("detachFromContext");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("detachFromContext: abandoned SurfaceTexture");
return NO_INIT;
}
if (!mAttached) {
ST_LOGE("detachFromContext: SurfaceTexture is not attached to a "
"context");
return INVALID_OPERATION;
}
EGLDisplay dpy = eglGetCurrentDisplay();
EGLContext ctx = eglGetCurrentContext();
if (mEglDisplay != dpy && mEglDisplay != EGL_NO_DISPLAY) {
ST_LOGE("detachFromContext: invalid current EGLDisplay");
return INVALID_OPERATION;
}
if (mEglContext != ctx && mEglContext != EGL_NO_CONTEXT) {
ST_LOGE("detachFromContext: invalid current EGLContext");
return INVALID_OPERATION;
}
if (dpy != EGL_NO_DISPLAY && ctx != EGL_NO_CONTEXT) {
status_t err = syncForReleaseLocked(dpy);
if (err != OK) {
return err;
}
glDeleteTextures(1, &mTexName);
}
// Because we're giving up the EGLDisplay we need to free all the EGLImages
// that are associated with it. They'll be recreated when the
// SurfaceTexture gets attached to a new OpenGL ES context (and thus gets a
// new EGLDisplay).
for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
EGLImageKHR img = mEglSlots[i].mEglImage;
if (img != EGL_NO_IMAGE_KHR) {
eglDestroyImageKHR(mEglDisplay, img);
mEglSlots[i].mEglImage = EGL_NO_IMAGE_KHR;
}
}
mEglDisplay = EGL_NO_DISPLAY;
mEglContext = EGL_NO_CONTEXT;
mAttached = false;
return OK;
}
status_t SurfaceTexture::attachToContext(GLuint tex) {
ATRACE_CALL();
ST_LOGV("attachToContext");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("attachToContext: abandoned SurfaceTexture");
return NO_INIT;
}
if (mAttached) {
ST_LOGE("attachToContext: SurfaceTexture is already attached to a "
"context");
return INVALID_OPERATION;
}
EGLDisplay dpy = eglGetCurrentDisplay();
EGLContext ctx = eglGetCurrentContext();
if (dpy == EGL_NO_DISPLAY) {
ST_LOGE("attachToContext: invalid current EGLDisplay");
return INVALID_OPERATION;
}
if (ctx == EGL_NO_CONTEXT) {
ST_LOGE("attachToContext: invalid current EGLContext");
return INVALID_OPERATION;
}
// We need to bind the texture regardless of whether there's a current
// buffer.
glBindTexture(mTexTarget, tex);
if (mCurrentTextureBuf != NULL) {
// The EGLImageKHR that was associated with the slot was destroyed when
// the SurfaceTexture was detached from the old context, so we need to
// recreate it here.
EGLImageKHR image = createImage(dpy, mCurrentTextureBuf);
if (image == EGL_NO_IMAGE_KHR) {
return UNKNOWN_ERROR;
}
// Attach the current buffer to the GL texture.
glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);
GLint error;
status_t err = OK;
while ((error = glGetError()) != GL_NO_ERROR) {
ST_LOGE("attachToContext: error binding external texture image %p "
"(slot %d): %#04x", image, mCurrentTexture, error);
err = UNKNOWN_ERROR;
}
// We destroy the EGLImageKHR here because the current buffer may no
// longer be associated with one of the buffer slots, so we have
// nowhere to to store it. If the buffer is still associated with a
// slot then another EGLImageKHR will be created next time that buffer
// gets acquired in updateTexImage.
eglDestroyImageKHR(dpy, image);
if (err != OK) {
return err;
}
}
mEglDisplay = dpy;
mEglContext = ctx;
mTexName = tex;
mAttached = true;
return OK;
}
status_t SurfaceTexture::syncForReleaseLocked(EGLDisplay dpy) {
ST_LOGV("syncForReleaseLocked");
if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
if (useNativeFenceSync) {
EGLSyncKHR sync = eglCreateSyncKHR(dpy,
EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
if (sync == EGL_NO_SYNC_KHR) {
ST_LOGE("syncForReleaseLocked: error creating EGL fence: %#x",
eglGetError());
return UNKNOWN_ERROR;
}
glFlush();
int fenceFd = eglDupNativeFenceFDANDROID(dpy, sync);
eglDestroySyncKHR(dpy, sync);
if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
ST_LOGE("syncForReleaseLocked: error dup'ing native fence "
"fd: %#x", eglGetError());
return UNKNOWN_ERROR;
}
sp<Fence> fence(new Fence(fenceFd));
status_t err = addReleaseFenceLocked(mCurrentTexture, fence);
if (err != OK) {
ST_LOGE("syncForReleaseLocked: error adding release fence: "
"%s (%d)", strerror(-err), err);
return err;
}
} else if (mUseFenceSync) {
EGLSyncKHR fence = mEglSlots[mCurrentTexture].mEglFence;
if (fence != EGL_NO_SYNC_KHR) {
// There is already a fence for the current slot. We need to
// wait on that before replacing it with another fence to
// ensure that all outstanding buffer accesses have completed
// before the producer accesses it.
EGLint result = eglClientWaitSyncKHR(dpy, fence, 0, 1000000000);
if (result == EGL_FALSE) {
ST_LOGE("syncForReleaseLocked: error waiting for previous "
"fence: %#x", eglGetError());
return UNKNOWN_ERROR;
} else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
ST_LOGE("syncForReleaseLocked: timeout waiting for previous "
"fence");
return TIMED_OUT;
}
eglDestroySyncKHR(dpy, fence);
}
// Create a fence for the outstanding accesses in the current
// OpenGL ES context.
fence = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
if (fence == EGL_NO_SYNC_KHR) {
ST_LOGE("syncForReleaseLocked: error creating fence: %#x",
eglGetError());
return UNKNOWN_ERROR;
}
glFlush();
mEglSlots[mCurrentTexture].mEglFence = fence;
}
}
return OK;
}
bool SurfaceTexture::isExternalFormat(uint32_t format)
{
switch (format) {
// supported YUV formats
case HAL_PIXEL_FORMAT_YV12:
// Legacy/deprecated YUV formats
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_I:
return true;
}
// Any OEM format needs to be considered
if (format>=0x100 && format<=0x1FF)
return true;
return false;
}
GLenum SurfaceTexture::getCurrentTextureTarget() const {
return mTexTarget;
}
void SurfaceTexture::getTransformMatrix(float mtx[16]) {
Mutex::Autolock lock(mMutex);
memcpy(mtx, mCurrentTransformMatrix, sizeof(mCurrentTransformMatrix));
}
void SurfaceTexture::setFilteringEnabled(bool enabled) {
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("setFilteringEnabled: SurfaceTexture is abandoned!");
return;
}
bool needsRecompute = mFilteringEnabled != enabled;
mFilteringEnabled = enabled;
if (needsRecompute && mCurrentTextureBuf==NULL) {
ST_LOGD("setFilteringEnabled called with mCurrentTextureBuf == NULL");
}
if (needsRecompute && mCurrentTextureBuf != NULL) {
computeCurrentTransformMatrixLocked();
}
}
void SurfaceTexture::computeCurrentTransformMatrixLocked() {
ST_LOGV("computeCurrentTransformMatrixLocked");
float xform[16];
for (int i = 0; i < 16; i++) {
xform[i] = mtxIdentity[i];
}
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_FLIP_H) {
float result[16];
mtxMul(result, xform, mtxFlipH);
for (int i = 0; i < 16; i++) {
xform[i] = result[i];
}
}
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_FLIP_V) {
float result[16];
mtxMul(result, xform, mtxFlipV);
for (int i = 0; i < 16; i++) {
xform[i] = result[i];
}
}
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
float result[16];
mtxMul(result, xform, mtxRot90);
for (int i = 0; i < 16; i++) {
xform[i] = result[i];
}
}
sp<GraphicBuffer>& buf(mCurrentTextureBuf);
if (buf == NULL) {
ST_LOGD("computeCurrentTransformMatrixLocked: mCurrentTextureBuf is NULL");
}
Rect cropRect = mCurrentCrop;
float tx = 0.0f, ty = 0.0f, sx = 1.0f, sy = 1.0f;
float bufferWidth = buf->getWidth();
float bufferHeight = buf->getHeight();
if (!cropRect.isEmpty()) {
float shrinkAmount = 0.0f;
if (mFilteringEnabled) {
// In order to prevent bilinear sampling beyond the edge of the
// crop rectangle we may need to shrink it by 2 texels in each
// dimension. Normally this would just need to take 1/2 a texel
// off each end, but because the chroma channels of YUV420 images
// are subsampled we may need to shrink the crop region by a whole
// texel on each side.
switch (buf->getPixelFormat()) {
case PIXEL_FORMAT_RGBA_8888:
case PIXEL_FORMAT_RGBX_8888:
case PIXEL_FORMAT_RGB_888:
case PIXEL_FORMAT_RGB_565:
case PIXEL_FORMAT_BGRA_8888:
case PIXEL_FORMAT_RGBA_5551:
case PIXEL_FORMAT_RGBA_4444:
// We know there's no subsampling of any channels, so we
// only need to shrink by a half a pixel.
shrinkAmount = 0.5;
break;
default:
// If we don't recognize the format, we must assume the
// worst case (that we care about), which is YUV420.
shrinkAmount = 1.0;
break;
}
}
// Only shrink the dimensions that are not the size of the buffer.
if (cropRect.width() < bufferWidth) {
tx = (float(cropRect.left) + shrinkAmount) / bufferWidth;
sx = (float(cropRect.width()) - (2.0f * shrinkAmount)) /
bufferWidth;
}
if (cropRect.height() < bufferHeight) {
ty = (float(bufferHeight - cropRect.bottom) + shrinkAmount) /
bufferHeight;
sy = (float(cropRect.height()) - (2.0f * shrinkAmount)) /
bufferHeight;
}
}
float crop[16] = {
sx, 0, 0, 0,
0, sy, 0, 0,
0, 0, 1, 0,
tx, ty, 0, 1,
};
float mtxBeforeFlipV[16];
mtxMul(mtxBeforeFlipV, crop, xform);
// SurfaceFlinger expects the top of its window textures to be at a Y
// coordinate of 0, so SurfaceTexture must behave the same way. We don't
// want to expose this to applications, however, so we must add an
// additional vertical flip to the transform after all the other transforms.
mtxMul(mCurrentTransformMatrix, mtxFlipV, mtxBeforeFlipV);
}
nsecs_t SurfaceTexture::getTimestamp() {
ST_LOGV("getTimestamp");
Mutex::Autolock lock(mMutex);
return mCurrentTimestamp;
}
EGLImageKHR SurfaceTexture::createImage(EGLDisplay dpy,
const sp<GraphicBuffer>& graphicBuffer) {
EGLClientBuffer cbuf = (EGLClientBuffer)graphicBuffer->getNativeBuffer();
EGLint attrs[] = {
EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
EGL_NONE,
};
EGLImageKHR image = eglCreateImageKHR(dpy, EGL_NO_CONTEXT,
EGL_NATIVE_BUFFER_ANDROID, cbuf, attrs);
if (image == EGL_NO_IMAGE_KHR) {
EGLint error = eglGetError();
ST_LOGE("error creating EGLImage: %#x", error);
}
return image;
}
sp<GraphicBuffer> SurfaceTexture::getCurrentBuffer() const {
Mutex::Autolock lock(mMutex);
return mCurrentTextureBuf;
}
Rect SurfaceTexture::getCurrentCrop() const {
Mutex::Autolock lock(mMutex);
Rect outCrop = mCurrentCrop;
if (mCurrentScalingMode == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP) {
int32_t newWidth = mCurrentCrop.width();
int32_t newHeight = mCurrentCrop.height();
if (newWidth * mDefaultHeight > newHeight * mDefaultWidth) {
newWidth = newHeight * mDefaultWidth / mDefaultHeight;
ST_LOGV("too wide: newWidth = %d", newWidth);
} else if (newWidth * mDefaultHeight < newHeight * mDefaultWidth) {
newHeight = newWidth * mDefaultHeight / mDefaultWidth;
ST_LOGV("too tall: newHeight = %d", newHeight);
}
// The crop is too wide
if (newWidth < mCurrentCrop.width()) {
int32_t dw = (newWidth - mCurrentCrop.width())/2;
outCrop.left -=dw;
outCrop.right += dw;
// The crop is too tall
} else if (newHeight < mCurrentCrop.height()) {
int32_t dh = (newHeight - mCurrentCrop.height())/2;
outCrop.top -= dh;
outCrop.bottom += dh;
}
ST_LOGV("getCurrentCrop final crop [%d,%d,%d,%d]",
outCrop.left, outCrop.top,
outCrop.right,outCrop.bottom);
}
return outCrop;
}
uint32_t SurfaceTexture::getCurrentTransform() const {
Mutex::Autolock lock(mMutex);
return mCurrentTransform;
}
uint32_t SurfaceTexture::getCurrentScalingMode() const {
Mutex::Autolock lock(mMutex);
return mCurrentScalingMode;
}
sp<Fence> SurfaceTexture::getCurrentFence() const {
Mutex::Autolock lock(mMutex);
return mCurrentFence;
}
status_t SurfaceTexture::doGLFenceWait() const {
Mutex::Autolock lock(mMutex);
return doGLFenceWaitLocked();
}
status_t SurfaceTexture::doGLFenceWaitLocked() const {
EGLDisplay dpy = eglGetCurrentDisplay();
EGLContext ctx = eglGetCurrentContext();
if (mEglDisplay != dpy || mEglDisplay == EGL_NO_DISPLAY) {
ST_LOGE("doGLFenceWait: invalid current EGLDisplay");
return INVALID_OPERATION;
}
if (mEglContext != ctx || mEglContext == EGL_NO_CONTEXT) {
ST_LOGE("doGLFenceWait: invalid current EGLContext");
return INVALID_OPERATION;
}
if (mCurrentFence != NULL) {
if (useWaitSync) {
// Create an EGLSyncKHR from the current fence.
int fenceFd = mCurrentFence->dup();
if (fenceFd == -1) {
ST_LOGE("doGLFenceWait: error dup'ing fence fd: %d", errno);
return -errno;
}
EGLint attribs[] = {
EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd,
EGL_NONE
};
EGLSyncKHR sync = eglCreateSyncKHR(dpy,
EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
if (sync == EGL_NO_SYNC_KHR) {
close(fenceFd);
ST_LOGE("doGLFenceWait: error creating EGL fence: %#x",
eglGetError());
return UNKNOWN_ERROR;
}
// XXX: The spec draft is inconsistent as to whether this should
// return an EGLint or void. Ignore the return value for now, as
// it's not strictly needed.
eglWaitSyncANDROID(dpy, sync, 0);
EGLint eglErr = eglGetError();
eglDestroySyncKHR(dpy, sync);
if (eglErr != EGL_SUCCESS) {
ST_LOGE("doGLFenceWait: error waiting for EGL fence: %#x",
eglErr);
return UNKNOWN_ERROR;
}
} else {
status_t err = mCurrentFence->waitForever(1000,
"SurfaceTexture::doGLFenceWaitLocked");
if (err != NO_ERROR) {
ST_LOGE("doGLFenceWait: error waiting for fence: %d", err);
return err;
}
}
}
return NO_ERROR;
}
bool SurfaceTexture::isSynchronousMode() const {
Mutex::Autolock lock(mMutex);
return mBufferQueue->isSynchronousMode();
}
void SurfaceTexture::freeBufferLocked(int slotIndex) {
ST_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
if (slotIndex == mCurrentTexture) {
mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
}
EGLImageKHR img = mEglSlots[slotIndex].mEglImage;
if (img != EGL_NO_IMAGE_KHR) {
ST_LOGV("destroying EGLImage dpy=%p img=%p", mEglDisplay, img);
eglDestroyImageKHR(mEglDisplay, img);
}
mEglSlots[slotIndex].mEglImage = EGL_NO_IMAGE_KHR;
ConsumerBase::freeBufferLocked(slotIndex);
}
void SurfaceTexture::abandonLocked() {
ST_LOGV("abandonLocked");
mCurrentTextureBuf.clear();
ConsumerBase::abandonLocked();
}
void SurfaceTexture::setName(const String8& name) {
Mutex::Autolock _l(mMutex);
mName = name;
mBufferQueue->setConsumerName(name);
}
status_t SurfaceTexture::setDefaultBufferFormat(uint32_t defaultFormat) {
Mutex::Autolock lock(mMutex);
return mBufferQueue->setDefaultBufferFormat(defaultFormat);
}
status_t SurfaceTexture::setConsumerUsageBits(uint32_t usage) {
Mutex::Autolock lock(mMutex);
usage |= DEFAULT_USAGE_FLAGS;
return mBufferQueue->setConsumerUsageBits(usage);
}
status_t SurfaceTexture::setTransformHint(uint32_t hint) {
Mutex::Autolock lock(mMutex);
return mBufferQueue->setTransformHint(hint);
}
// Used for refactoring BufferQueue from SurfaceTexture
// Should not be in final interface once users of SurfaceTexture are clean up.
status_t SurfaceTexture::setSynchronousMode(bool enabled) {
Mutex::Autolock lock(mMutex);
return mBufferQueue->setSynchronousMode(enabled);
}
void SurfaceTexture::dumpLocked(String8& result, const char* prefix,
char* buffer, size_t size) const
{
snprintf(buffer, size,
"%smTexName=%d mCurrentTexture=%d\n"
"%smCurrentCrop=[%d,%d,%d,%d] mCurrentTransform=%#x\n",
prefix, mTexName, mCurrentTexture, prefix, mCurrentCrop.left,
mCurrentCrop.top, mCurrentCrop.right, mCurrentCrop.bottom,
mCurrentTransform);
result.append(buffer);
ConsumerBase::dumpLocked(result, prefix, buffer, size);
}
static void mtxMul(float out[16], const float a[16], const float b[16]) {
out[0] = a[0]*b[0] + a[4]*b[1] + a[8]*b[2] + a[12]*b[3];
out[1] = a[1]*b[0] + a[5]*b[1] + a[9]*b[2] + a[13]*b[3];
out[2] = a[2]*b[0] + a[6]*b[1] + a[10]*b[2] + a[14]*b[3];
out[3] = a[3]*b[0] + a[7]*b[1] + a[11]*b[2] + a[15]*b[3];
out[4] = a[0]*b[4] + a[4]*b[5] + a[8]*b[6] + a[12]*b[7];
out[5] = a[1]*b[4] + a[5]*b[5] + a[9]*b[6] + a[13]*b[7];
out[6] = a[2]*b[4] + a[6]*b[5] + a[10]*b[6] + a[14]*b[7];
out[7] = a[3]*b[4] + a[7]*b[5] + a[11]*b[6] + a[15]*b[7];
out[8] = a[0]*b[8] + a[4]*b[9] + a[8]*b[10] + a[12]*b[11];
out[9] = a[1]*b[8] + a[5]*b[9] + a[9]*b[10] + a[13]*b[11];
out[10] = a[2]*b[8] + a[6]*b[9] + a[10]*b[10] + a[14]*b[11];
out[11] = a[3]*b[8] + a[7]*b[9] + a[11]*b[10] + a[15]*b[11];
out[12] = a[0]*b[12] + a[4]*b[13] + a[8]*b[14] + a[12]*b[15];
out[13] = a[1]*b[12] + a[5]*b[13] + a[9]*b[14] + a[13]*b[15];
out[14] = a[2]*b[12] + a[6]*b[13] + a[10]*b[14] + a[14]*b[15];
out[15] = a[3]*b[12] + a[7]*b[13] + a[11]*b[14] + a[15]*b[15];
}
}; // namespace android
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