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fix a crasher in SurfaceTexture's setFilteringEnabled 

bug: 7211067
Change-Id: Id8658a8df429d76c20ab9112858b38e52343dc9c
This commit is contained in:
Mathias Agopian 2012-09-24 19:26:11 -07:00
parent 13de369980
commit e96e9e1093
2 changed files with 22 additions and 7 deletions
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5
include/gui/SurfaceTexture.h
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@ -259,10 +259,11 @@ private:
// This method must be called with mMutex locked.
virtual void freeBufferLocked(int slotIndex);
// computeCurrentTransformMatrix computes the transform matrix for the
// computeCurrentTransformMatrixLocked computes the transform matrix for the
// current texture. It uses mCurrentTransform and the current GraphicBuffer
// to compute this matrix and stores it in mCurrentTransformMatrix.
void computeCurrentTransformMatrix();
// mCurrentTextureBuf must not be NULL.
void computeCurrentTransformMatrixLocked();
// doGLFenceWaitLocked inserts a wait command into the OpenGL ES command
// stream to ensure that it is safe for future OpenGL ES commands to

24
libs/gui/SurfaceTexture.cpp
View File

@ -317,7 +317,7 @@ status_t SurfaceTexture::updateTexImage(BufferRejecter* rejecter, bool skipSync)
// texturing from this SurfaceTexture.
doGLFenceWaitLocked();
}
computeCurrentTransformMatrix();
computeCurrentTransformMatrixLocked();
} else {
if (err < 0) {
ST_LOGE("updateTexImage: acquire failed: %s (%d)",
@ -566,15 +566,24 @@ void SurfaceTexture::getTransformMatrix(float mtx[16]) {
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) {
computeCurrentTransformMatrix();
if (needsRecompute && mCurrentTextureBuf==NULL) {
ST_LOGD("setFilteringEnabled called with mCurrentTextureBuf == NULL");
}
if (needsRecompute && mCurrentTextureBuf != NULL) {
computeCurrentTransformMatrixLocked();
}
}
void SurfaceTexture::computeCurrentTransformMatrix() {
ST_LOGV("computeCurrentTransformMatrix");
void SurfaceTexture::computeCurrentTransformMatrixLocked() {
ST_LOGV("computeCurrentTransformMatrixLocked");
float xform[16];
for (int i = 0; i < 16; i++) {
@ -603,6 +612,11 @@ void SurfaceTexture::computeCurrentTransformMatrix() {
}
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();