Add the SurfaceTexture C++ implementation.
This change adds the C++ implementation of SurfaceTexture and related
classes. The goal of this is for a SurfaceTexture to be passed to
camera service or Stagefright in place of a Surface to allow camera
preview or decoded video frames to be streamed to an OpenGL ES texture
that an application can use.
Change-Id: I55c83a7017f1ecb81c9c9e3252cbd118b914296c
diff --git a/include/gui/ISurfaceTexture.h b/include/gui/ISurfaceTexture.h
new file mode 100644
index 0000000..77d37f1
--- /dev/null
+++ b/include/gui/ISurfaceTexture.h
@@ -0,0 +1,91 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_GUI_ISURFACETEXTURE_H
+#define ANDROID_GUI_ISURFACETEXTURE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+
+#include <binder/IInterface.h>
+
+#include <ui/GraphicBuffer.h>
+#include <ui/Rect.h>
+
+namespace android {
+// ----------------------------------------------------------------------------
+
+class ISurfaceTexture : public IInterface
+{
+public:
+ DECLARE_META_INTERFACE(SurfaceTexture);
+
+ // requestBuffer requests a new buffer for the given index. The server (i.e.
+ // the ISurfaceTexture implementation) assigns the newly created buffer to
+ // the given slot index, and the client is expected to mirror the
+ // slot->buffer mapping so that it's not necessary to transfer a
+ // GraphicBuffer for every dequeue operation.
+ virtual sp<GraphicBuffer> requestBuffer(int slot, uint32_t w, uint32_t h,
+ uint32_t format, uint32_t usage) = 0;
+
+ // setBufferCount sets the number of buffer slots available. Calling this
+ // will also cause all buffer slots to be emptied. The caller should empty
+ // its mirrored copy of the buffer slots when calling this method.
+ virtual status_t setBufferCount(int bufferCount) = 0;
+
+ // dequeueBuffer requests a new buffer slot for the client to use. Ownership
+ // of the slot is transfered to the client, meaning that the server will not
+ // use the contents of the buffer associated with that slot. The slot index
+ // returned may or may not contain a buffer. If the slot is empty the client
+ // should call requestBuffer to assign a new buffer to that slot. The client
+ // is expected to either call cancelBuffer on the dequeued slot or to fill
+ // in the contents of its associated buffer contents and call queueBuffer.
+ virtual status_t dequeueBuffer(int *slot) = 0;
+
+ // queueBuffer indicates that the client has finished filling in the
+ // contents of the buffer associated with slot and transfers ownership of
+ // that slot back to the server. It is not valid to call queueBuffer on a
+ // slot that is not owned by the client or one for which a buffer associated
+ // via requestBuffer.
+ virtual status_t queueBuffer(int slot) = 0;
+
+ // cancelBuffer indicates that the client does not wish to fill in the
+ // buffer associated with slot and transfers ownership of the slot back to
+ // the server.
+ virtual void cancelBuffer(int slot) = 0;
+
+ virtual status_t setCrop(const Rect& reg) = 0;
+ virtual status_t setTransform(uint32_t transform) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnSurfaceTexture : public BnInterface<ISurfaceTexture>
+{
+public:
+ virtual status_t onTransact( uint32_t code,
+ const Parcel& data,
+ Parcel* reply,
+ uint32_t flags = 0);
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_GUI_ISURFACETEXTURE_H
diff --git a/include/gui/SurfaceTexture.h b/include/gui/SurfaceTexture.h
new file mode 100644
index 0000000..ff92e08
--- /dev/null
+++ b/include/gui/SurfaceTexture.h
@@ -0,0 +1,139 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_GUI_SURFACETEXTURE_H
+#define ANDROID_GUI_SURFACETEXTURE_H
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+
+#include <gui/ISurfaceTexture.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <utils/threads.h>
+
+#define ANDROID_GRAPHICS_SURFACETEXTURE_JNI_ID "mSurfaceTexture"
+
+namespace android {
+// ----------------------------------------------------------------------------
+
+class SurfaceTexture : public BnSurfaceTexture {
+public:
+ enum { MIN_BUFFER_SLOTS = 3 };
+ enum { NUM_BUFFER_SLOTS = 32 };
+
+ // tex indicates the name OpenGL texture to which images are to be streamed.
+ // This texture name cannot be changed once the SurfaceTexture is created.
+ SurfaceTexture(GLuint tex);
+
+ virtual ~SurfaceTexture();
+
+ // setBufferCount updates the number of available buffer slots. After
+ // calling this all buffer slots are both unallocated and owned by the
+ // SurfaceTexture object (i.e. they are not owned by the client).
+ virtual status_t setBufferCount(int bufferCount);
+
+ virtual sp<GraphicBuffer> requestBuffer(int buf, uint32_t w, uint32_t h,
+ uint32_t format, uint32_t usage);
+
+ // dequeueBuffer gets the next buffer slot index for the client to use. If a
+ // buffer slot is available then that slot index is written to the location
+ // pointed to by the buf argument and a status of OK is returned. If no
+ // slot is available then a status of -EBUSY is returned and buf is
+ // unmodified.
+ virtual status_t dequeueBuffer(int *buf);
+
+ virtual status_t queueBuffer(int buf);
+ virtual void cancelBuffer(int buf);
+ virtual status_t setCrop(const Rect& reg);
+ virtual status_t setTransform(uint32_t transform);
+
+ // updateTexImage sets the image contents of the target texture to that of
+ // the most recently queued buffer.
+ //
+ // This call may only be made while the OpenGL ES context to which the
+ // target texture belongs is bound to the calling thread.
+ status_t updateTexImage();
+
+private:
+
+ // freeAllBuffers frees the resources (both GraphicBuffer and EGLImage) for
+ // all slots.
+ void freeAllBuffers();
+
+ // createImage creates a new EGLImage from a GraphicBuffer.
+ EGLImageKHR createImage(EGLDisplay dpy,
+ const sp<GraphicBuffer>& graphicBuffer);
+
+ enum { INVALID_BUFFER_SLOT = -1 };
+
+ struct BufferSlot {
+ // mGraphicBuffer points to the buffer allocated for this slot or is NULL
+ // if no buffer has been allocated.
+ sp<GraphicBuffer> mGraphicBuffer;
+
+ // mEglImage is the EGLImage created from mGraphicBuffer.
+ EGLImageKHR mEglImage;
+
+ // mEglDisplay is the EGLDisplay used to create mEglImage.
+ EGLDisplay mEglDisplay;
+
+ // mOwnedByClient indicates whether the slot is currently accessible to a
+ // client and should not be used by the SurfaceTexture object. It gets
+ // set to true when dequeueBuffer returns the slot and is reset to false
+ // when the client calls either queueBuffer or cancelBuffer on the slot.
+ bool mOwnedByClient;
+ };
+
+ // mSlots is the array of buffer slots that must be mirrored on the client
+ // side. This allows buffer ownership to be transferred between the client
+ // and server without sending a GraphicBuffer over binder. The entire array
+ // is initialized to NULL at construction time, and buffers are allocated
+ // for a slot when requestBuffer is called with that slot's index.
+ BufferSlot mSlots[NUM_BUFFER_SLOTS];
+
+ // mBufferCount is the number of buffer slots that the client and server
+ // must maintain. It defaults to MIN_BUFFER_SLOTS and can be changed by
+ // calling setBufferCount.
+ int mBufferCount;
+
+ // mCurrentTexture is the buffer slot index of the buffer that is currently
+ // bound to the OpenGL texture. A value of INVALID_BUFFER_SLOT, indicating
+ // that no buffer is currently bound to the texture.
+ int mCurrentTexture;
+
+ // mLastQueued is the buffer slot index of the most recently enqueued buffer.
+ // At construction time it is initialized to INVALID_BUFFER_SLOT, and is
+ // updated each time queueBuffer is called.
+ int mLastQueued;
+
+ // mTexName is the name of the OpenGL texture to which streamed images will
+ // be bound when updateTexImage is called. It is set at construction time
+ // changed with a call to setTexName.
+ const GLuint mTexName;
+
+ // mMutex is the mutex used to prevent concurrent access to the member
+ // variables of SurfaceTexture objects. It must be locked whenever the
+ // member variables are accessed.
+ Mutex mMutex;
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_GUI_SURFACETEXTURE_H
diff --git a/include/gui/SurfaceTextureClient.h b/include/gui/SurfaceTextureClient.h
new file mode 100644
index 0000000..dd1d490
--- /dev/null
+++ b/include/gui/SurfaceTextureClient.h
@@ -0,0 +1,118 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_GUI_SURFACETEXTURECLIENT_H
+#define ANDROID_GUI_SURFACETEXTURECLIENT_H
+
+#include <gui/ISurfaceTexture.h>
+#include <gui/SurfaceTexture.h>
+
+#include <ui/egl/android_natives.h>
+
+#include <utils/RefBase.h>
+#include <utils/threads.h>
+
+namespace android {
+
+class SurfaceTextureClient
+ : public EGLNativeBase<ANativeWindow, SurfaceTextureClient, RefBase>
+{
+public:
+ SurfaceTextureClient(const sp<ISurfaceTexture>& surfaceTexture);
+
+private:
+
+ // can't be copied
+ SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs);
+ SurfaceTextureClient(const SurfaceTextureClient& rhs);
+
+ // ANativeWindow hooks
+ static int setSwapInterval(ANativeWindow* window, int interval);
+ static int dequeueBuffer(ANativeWindow* window, android_native_buffer_t** buffer);
+ static int cancelBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
+ static int lockBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
+ static int queueBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
+ static int query(ANativeWindow* window, int what, int* value);
+ static int perform(ANativeWindow* window, int operation, ...);
+
+ int setSwapInterval(int interval);
+ int dequeueBuffer(android_native_buffer_t** buffer);
+ int lockBuffer(android_native_buffer_t* buffer);
+ int queueBuffer(android_native_buffer_t* buffer);
+ int cancelBuffer(android_native_buffer_t* buffer);
+ int query(int what, int* value);
+ int perform(int operation, va_list args);
+
+ int dispatchSetUsage(va_list args);
+ int dispatchConnect(va_list args);
+ int dispatchDisconnect(va_list args);
+ int dispatchSetCrop(va_list args);
+ int dispatchSetBufferCount(va_list args);
+ int dispatchSetBuffersGeometry(va_list args);
+ int dispatchSetBuffersTransform(va_list args);
+
+ int connect(int api);
+ int disconnect(int api);
+ int setUsage(uint32_t reqUsage);
+ int setCrop(Rect const* rect);
+ int setBufferCount(int bufferCount);
+ int setBuffersGeometry(int w, int h, int format);
+ int setBuffersTransform(int transform);
+
+ void freeAllBuffers();
+
+ enum { MIN_BUFFER_SLOTS = SurfaceTexture::MIN_BUFFER_SLOTS };
+ enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS };
+ enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 };
+
+ // mSurfaceTexture is the interface to the surface texture server. All
+ // operations on the surface texture client ultimately translate into
+ // interactions with the server using this interface.
+ sp<ISurfaceTexture> mSurfaceTexture;
+
+ // mSlots stores the buffers that have been allocated for each buffer slot.
+ // It is initialized to null pointers, and gets filled in with the result of
+ // ISurfaceTexture::requestBuffer when the client dequeues a buffer from a
+ // slot that has not yet been used. The buffer allocated to a slot will also
+ // be replaced if the requested buffer usage or geometry differs from that
+ // of the buffer allocated to a slot.
+ sp<GraphicBuffer> mSlots[NUM_BUFFER_SLOTS];
+
+ // mReqWidth is the buffer width that will be requested at the next dequeue
+ // operation. It is initialized to 1.
+ uint32_t mReqWidth;
+
+ // mReqHeight is the buffer height that will be requested at the next deuque
+ // operation. It is initialized to 1.
+ uint32_t mReqHeight;
+
+ // mReqFormat is the buffer pixel format that will be requested at the next
+ // deuque operation. It is initialized to PIXEL_FORMAT_RGBA_8888.
+ uint32_t mReqFormat;
+
+ // mReqUsage is the set of buffer usage flags that will be requested
+ // at the next deuque operation. It is initialized to 0.
+ uint32_t mReqUsage;
+
+ // mMutex is the mutex used to prevent concurrent access to the member
+ // variables of SurfaceTexture objects. It must be locked whenever the
+ // member variables are accessed.
+ Mutex mMutex;
+};
+
+}; // namespace android
+
+#endif // ANDROID_GUI_SURFACETEXTURECLIENT_H
diff --git a/include/ui/GraphicBuffer.h b/include/ui/GraphicBuffer.h
index aa65d93..8b256f4 100644
--- a/include/ui/GraphicBuffer.h
+++ b/include/ui/GraphicBuffer.h
@@ -121,6 +121,7 @@
friend class Surface;
friend class BpSurface;
friend class BnSurface;
+ friend class SurfaceTextureClient;
friend class LightRefBase<GraphicBuffer>;
GraphicBuffer(const GraphicBuffer& rhs);
GraphicBuffer& operator = (const GraphicBuffer& rhs);
diff --git a/libs/gui/Android.mk b/libs/gui/Android.mk
index 249558a..d1a6af1 100644
--- a/libs/gui/Android.mk
+++ b/libs/gui/Android.mk
@@ -4,17 +4,25 @@
LOCAL_SRC_FILES:= \
ISensorEventConnection.cpp \
ISensorServer.cpp \
+ ISurfaceTexture.cpp \
Sensor.cpp \
SensorChannel.cpp \
SensorEventQueue.cpp \
- SensorManager.cpp
+ SensorManager.cpp \
+ SurfaceTexture.cpp \
+ SurfaceTextureClient.cpp
LOCAL_SHARED_LIBRARIES := \
libcutils \
libutils \
libbinder \
libhardware \
- libhardware_legacy
+ libhardware_legacy \
+ libui \
+ libEGL \
+ libGLESv2 \
+ libsurfaceflinger_client
+
LOCAL_MODULE:= libgui
diff --git a/libs/gui/ISurfaceTexture.cpp b/libs/gui/ISurfaceTexture.cpp
new file mode 100644
index 0000000..90bca3c
--- /dev/null
+++ b/libs/gui/ISurfaceTexture.cpp
@@ -0,0 +1,204 @@
+/*
+ * 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.
+ */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/Vector.h>
+#include <utils/Timers.h>
+
+#include <binder/Parcel.h>
+#include <binder/IInterface.h>
+
+#include <gui/ISurfaceTexture.h>
+
+namespace android {
+// ----------------------------------------------------------------------------
+
+enum {
+ REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION,
+ SET_BUFFER_COUNT,
+ DEQUEUE_BUFFER,
+ QUEUE_BUFFER,
+ CANCEL_BUFFER,
+ SET_CROP,
+ SET_TRANSFORM,
+};
+
+
+class BpSurfaceTexture : public BpInterface<ISurfaceTexture>
+{
+public:
+ BpSurfaceTexture(const sp<IBinder>& impl)
+ : BpInterface<ISurfaceTexture>(impl)
+ {
+ }
+
+ virtual sp<GraphicBuffer> requestBuffer(int bufferIdx,
+ uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(bufferIdx);
+ data.writeInt32(w);
+ data.writeInt32(h);
+ data.writeInt32(format);
+ data.writeInt32(usage);
+ remote()->transact(REQUEST_BUFFER, data, &reply);
+ sp<GraphicBuffer> buffer;
+ bool nonNull = reply.readInt32();
+ if (nonNull) {
+ buffer = new GraphicBuffer();
+ reply.read(*buffer);
+ }
+ return buffer;
+ }
+
+ virtual status_t setBufferCount(int bufferCount)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(bufferCount);
+ remote()->transact(SET_BUFFER_COUNT, data, &reply);
+ status_t err = reply.readInt32();
+ return err;
+ }
+
+ virtual status_t dequeueBuffer(int *buf) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ remote()->transact(DEQUEUE_BUFFER, data, &reply);
+ *buf = reply.readInt32();
+ int result = reply.readInt32();
+ return result;
+ }
+
+ virtual status_t queueBuffer(int buf) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(buf);
+ remote()->transact(QUEUE_BUFFER, data, &reply);
+ status_t result = reply.readInt32();
+ return result;
+ }
+
+ virtual void cancelBuffer(int buf) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(buf);
+ remote()->transact(CANCEL_BUFFER, data, &reply);
+ }
+
+ virtual status_t setCrop(const Rect& reg) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeFloat(reg.left);
+ data.writeFloat(reg.top);
+ data.writeFloat(reg.right);
+ data.writeFloat(reg.bottom);
+ remote()->transact(SET_CROP, data, &reply);
+ status_t result = reply.readInt32();
+ return result;
+ }
+
+ virtual status_t setTransform(uint32_t transform) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(transform);
+ remote()->transact(SET_TRANSFORM, data, &reply);
+ status_t result = reply.readInt32();
+ return result;
+ }
+};
+
+IMPLEMENT_META_INTERFACE(SurfaceTexture, "android.gui.SurfaceTexture");
+
+// ----------------------------------------------------------------------
+
+status_t BnSurfaceTexture::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ switch(code) {
+ case REQUEST_BUFFER: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int bufferIdx = data.readInt32();
+ uint32_t w = data.readInt32();
+ uint32_t h = data.readInt32();
+ uint32_t format = data.readInt32();
+ uint32_t usage = data.readInt32();
+ sp<GraphicBuffer> buffer(requestBuffer(bufferIdx, w, h, format,
+ usage));
+ reply->writeInt32(buffer != 0);
+ if (buffer != 0) {
+ reply->write(*buffer);
+ }
+ return NO_ERROR;
+ } break;
+ case SET_BUFFER_COUNT: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int bufferCount = data.readInt32();
+ int result = setBufferCount(bufferCount);
+ reply->writeInt32(result);
+ return NO_ERROR;
+ } break;
+ case DEQUEUE_BUFFER: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int buf;
+ int result = dequeueBuffer(&buf);
+ reply->writeInt32(buf);
+ reply->writeInt32(result);
+ return NO_ERROR;
+ } break;
+ case QUEUE_BUFFER: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int buf = data.readInt32();
+ status_t result = queueBuffer(buf);
+ reply->writeInt32(result);
+ return NO_ERROR;
+ } break;
+ case CANCEL_BUFFER: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int buf = data.readInt32();
+ cancelBuffer(buf);
+ return NO_ERROR;
+ } break;
+ case SET_CROP: {
+ Rect reg;
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ reg.left = data.readFloat();
+ reg.top = data.readFloat();
+ reg.right = data.readFloat();
+ reg.bottom = data.readFloat();
+ status_t result = setCrop(reg);
+ reply->writeInt32(result);
+ return NO_ERROR;
+ } break;
+ case SET_TRANSFORM: {
+ Rect reg;
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ uint32_t transform = data.readInt32();
+ status_t result = setTransform(transform);
+ reply->writeInt32(result);
+ return NO_ERROR;
+ } break;
+ }
+ return BBinder::onTransact(code, data, reply, flags);
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
new file mode 100644
index 0000000..9579996
--- /dev/null
+++ b/libs/gui/SurfaceTexture.cpp
@@ -0,0 +1,199 @@
+/*
+ * 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 GL_GLEXT_PROTOTYPES
+#define EGL_EGLEXT_PROTOTYPES
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+#include <gui/SurfaceTexture.h>
+
+#include <surfaceflinger/ISurfaceComposer.h>
+#include <surfaceflinger/SurfaceComposerClient.h>
+
+#include <utils/Log.h>
+
+namespace android {
+
+SurfaceTexture::SurfaceTexture(GLuint tex) :
+ mBufferCount(MIN_BUFFER_SLOTS), mCurrentTexture(INVALID_BUFFER_SLOT),
+ mLastQueued(INVALID_BUFFER_SLOT), mTexName(tex) {
+}
+
+SurfaceTexture::~SurfaceTexture() {
+ freeAllBuffers();
+}
+
+status_t SurfaceTexture::setBufferCount(int bufferCount) {
+ Mutex::Autolock lock(mMutex);
+ freeAllBuffers();
+ mBufferCount = bufferCount;
+ return OK;
+}
+
+sp<GraphicBuffer> SurfaceTexture::requestBuffer(int buf,
+ uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
+ Mutex::Autolock lock(mMutex);
+ if (buf < 0 || mBufferCount <= buf) {
+ LOGE("requestBuffer: slot index out of range [0, %d]: %d",
+ mBufferCount, buf);
+ return 0;
+ }
+ usage |= GraphicBuffer::USAGE_HW_TEXTURE;
+ sp<ISurfaceComposer> composer(ComposerService::getComposerService());
+ sp<GraphicBuffer> graphicBuffer(composer->createGraphicBuffer(w, h,
+ format, usage));
+ if (graphicBuffer == 0) {
+ LOGE("requestBuffer: SurfaceComposer::createGraphicBuffer failed");
+ } else {
+ mSlots[buf].mGraphicBuffer = graphicBuffer;
+ if (mSlots[buf].mEglImage != EGL_NO_IMAGE_KHR) {
+ eglDestroyImageKHR(mSlots[buf].mEglDisplay, mSlots[buf].mEglImage);
+ mSlots[buf].mEglImage = EGL_NO_IMAGE_KHR;
+ mSlots[buf].mEglDisplay = EGL_NO_DISPLAY;
+ }
+ }
+ return graphicBuffer;
+}
+
+status_t SurfaceTexture::dequeueBuffer(int *buf) {
+ Mutex::Autolock lock(mMutex);
+ int found = INVALID_BUFFER_SLOT;
+ for (int i = 0; i < mBufferCount; i++) {
+ if (!mSlots[i].mOwnedByClient && i != mCurrentTexture) {
+ mSlots[i].mOwnedByClient = true;
+ found = i;
+ break;
+ }
+ }
+ if (found == INVALID_BUFFER_SLOT) {
+ return -EBUSY;
+ }
+ *buf = found;
+ return OK;
+}
+
+status_t SurfaceTexture::queueBuffer(int buf) {
+ Mutex::Autolock lock(mMutex);
+ if (buf < 0 || mBufferCount <= buf) {
+ LOGE("queueBuffer: slot index out of range [0, %d]: %d",
+ mBufferCount, buf);
+ return -EINVAL;
+ } else if (!mSlots[buf].mOwnedByClient) {
+ LOGE("queueBuffer: slot %d is not owned by the client", buf);
+ return -EINVAL;
+ } else if (mSlots[buf].mGraphicBuffer == 0) {
+ LOGE("queueBuffer: slot %d was enqueued without requesting a buffer",
+ buf);
+ return -EINVAL;
+ }
+ mSlots[buf].mOwnedByClient = false;
+ mLastQueued = buf;
+ return OK;
+}
+
+void SurfaceTexture::cancelBuffer(int buf) {
+ Mutex::Autolock lock(mMutex);
+ if (buf < 0 || mBufferCount <= buf) {
+ LOGE("cancelBuffer: slot index out of range [0, %d]: %d", mBufferCount,
+ buf);
+ return;
+ } else if (!mSlots[buf].mOwnedByClient) {
+ LOGE("cancelBuffer: slot %d is not owned by the client", buf);
+ return;
+ }
+ mSlots[buf].mOwnedByClient = false;
+}
+
+status_t SurfaceTexture::setCrop(const Rect& reg) {
+ Mutex::Autolock lock(mMutex);
+ // XXX: How should we handle crops?
+ return OK;
+}
+
+status_t SurfaceTexture::setTransform(uint32_t transform) {
+ Mutex::Autolock lock(mMutex);
+ // XXX: How should we handle transforms?
+ return OK;
+}
+
+status_t SurfaceTexture::updateTexImage() {
+ Mutex::Autolock lock(mMutex);
+
+ // We always bind the texture even if we don't update its contents.
+ glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTexName);
+
+ // Initially both mCurrentTexture and mLastQueued are INVALID_BUFFER_SLOT,
+ // so this check will fail until a buffer gets queued.
+ if (mCurrentTexture != mLastQueued) {
+ // XXX: Figure out the right target.
+ mCurrentTexture = mLastQueued;
+ EGLImageKHR image = mSlots[mCurrentTexture].mEglImage;
+ if (image == EGL_NO_IMAGE_KHR) {
+ EGLDisplay dpy = eglGetCurrentDisplay();
+ sp<GraphicBuffer> graphicBuffer = mSlots[mCurrentTexture].mGraphicBuffer;
+ image = createImage(dpy, graphicBuffer);
+ mSlots[mCurrentTexture].mEglImage = image;
+ mSlots[mCurrentTexture].mEglDisplay = dpy;
+ }
+ glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, (GLeglImageOES)image);
+ GLint error = glGetError();
+ if (error != GL_NO_ERROR) {
+ LOGE("error binding external texture image %p (slot %d): %#04x",
+ image, mCurrentTexture, error);
+ return -EINVAL;
+ }
+ }
+ return OK;
+}
+
+void SurfaceTexture::freeAllBuffers() {
+ for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
+ mSlots[i].mGraphicBuffer = 0;
+ mSlots[i].mOwnedByClient = false;
+ if (mSlots[i].mEglImage != EGL_NO_IMAGE_KHR) {
+ eglDestroyImageKHR(mSlots[i].mEglDisplay, mSlots[i].mEglImage);
+ mSlots[i].mEglImage = EGL_NO_IMAGE_KHR;
+ mSlots[i].mEglDisplay = EGL_NO_DISPLAY;
+ }
+ }
+}
+
+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);
+ EGLint error = eglGetError();
+ if (error != EGL_SUCCESS) {
+ LOGE("error creating EGLImage: %#x", error);
+ } else if (image == EGL_NO_IMAGE_KHR) {
+ LOGE("no error reported, but no image was returned by "
+ "eglCreateImageKHR");
+ }
+ return image;
+}
+
+}; // namespace android
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
new file mode 100644
index 0000000..8a59144
--- /dev/null
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -0,0 +1,285 @@
+/*
+ * 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 "SurfaceTextureClient"
+
+#include <gui/SurfaceTextureClient.h>
+
+#include <utils/Log.h>
+
+namespace android {
+
+SurfaceTextureClient::SurfaceTextureClient(
+ const sp<ISurfaceTexture>& surfaceTexture):
+ mSurfaceTexture(surfaceTexture), mReqWidth(1), mReqHeight(1),
+ mReqFormat(DEFAULT_FORMAT), mReqUsage(0), mMutex() {
+ // Initialize the ANativeWindow function pointers.
+ ANativeWindow::setSwapInterval = setSwapInterval;
+ ANativeWindow::dequeueBuffer = dequeueBuffer;
+ ANativeWindow::cancelBuffer = cancelBuffer;
+ ANativeWindow::lockBuffer = lockBuffer;
+ ANativeWindow::queueBuffer = queueBuffer;
+ ANativeWindow::query = query;
+ ANativeWindow::perform = perform;
+}
+
+int SurfaceTextureClient::setSwapInterval(ANativeWindow* window, int interval) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->setSwapInterval(interval);
+}
+
+int SurfaceTextureClient::dequeueBuffer(ANativeWindow* window,
+ android_native_buffer_t** buffer) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->dequeueBuffer(buffer);
+}
+
+int SurfaceTextureClient::cancelBuffer(ANativeWindow* window,
+ android_native_buffer_t* buffer) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->cancelBuffer(buffer);
+}
+
+int SurfaceTextureClient::lockBuffer(ANativeWindow* window,
+ android_native_buffer_t* buffer) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->lockBuffer(buffer);
+}
+
+int SurfaceTextureClient::queueBuffer(ANativeWindow* window,
+ android_native_buffer_t* buffer) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->queueBuffer(buffer);
+}
+
+int SurfaceTextureClient::query(ANativeWindow* window, int what, int* value) {
+ SurfaceTextureClient* c = getSelf(window);
+ return c->query(what, value);
+}
+
+int SurfaceTextureClient::perform(ANativeWindow* window, int operation, ...) {
+ va_list args;
+ va_start(args, operation);
+ SurfaceTextureClient* c = getSelf(window);
+ return c->perform(operation, args);
+}
+
+int SurfaceTextureClient::setSwapInterval(int interval) {
+ return INVALID_OPERATION;
+}
+
+int SurfaceTextureClient::dequeueBuffer(android_native_buffer_t** buffer) {
+ Mutex::Autolock lock(mMutex);
+ int buf = -1;
+ status_t err = mSurfaceTexture->dequeueBuffer(&buf);
+ if (err < 0) {
+ return err;
+ }
+ sp<GraphicBuffer>& gbuf(mSlots[buf]);
+ if (gbuf == 0 || gbuf->getWidth() != mReqWidth ||
+ gbuf->getHeight() != mReqHeight ||
+ uint32_t(gbuf->getPixelFormat()) != mReqFormat ||
+ (gbuf->getUsage() & mReqUsage) != mReqUsage) {
+ gbuf = mSurfaceTexture->requestBuffer(buf, mReqWidth, mReqHeight,
+ mReqFormat, mReqUsage);
+ if (gbuf == 0) {
+ return NO_MEMORY;
+ }
+ }
+ *buffer = gbuf.get();
+ return OK;
+}
+
+int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer) {
+ Mutex::Autolock lock(mMutex);
+ for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
+ if (mSlots[i].get() == buffer) {
+ mSurfaceTexture->cancelBuffer(i);
+ return OK;
+ }
+ }
+ return BAD_VALUE;
+}
+
+int SurfaceTextureClient::lockBuffer(android_native_buffer_t* buffer) {
+ Mutex::Autolock lock(mMutex);
+ return OK;
+}
+
+int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer) {
+ Mutex::Autolock lock(mMutex);
+ for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
+ if (mSlots[i].get() == GraphicBuffer::getSelf(buffer)) {
+ return mSurfaceTexture->queueBuffer(i);
+ }
+ }
+ LOGE("queueBuffer: unknown buffer queued");
+ return BAD_VALUE;
+}
+
+int SurfaceTextureClient::query(int what, int* value) {
+ Mutex::Autolock lock(mMutex);
+ // XXX: Implement this!
+ return INVALID_OPERATION;
+}
+
+int SurfaceTextureClient::perform(int operation, va_list args)
+{
+ int res = NO_ERROR;
+ switch (operation) {
+ case NATIVE_WINDOW_CONNECT:
+ res = dispatchConnect(args);
+ break;
+ case NATIVE_WINDOW_DISCONNECT:
+ res = dispatchDisconnect(args);
+ break;
+ case NATIVE_WINDOW_SET_USAGE:
+ res = dispatchSetUsage(args);
+ break;
+ case NATIVE_WINDOW_SET_CROP:
+ res = dispatchSetCrop(args);
+ break;
+ case NATIVE_WINDOW_SET_BUFFER_COUNT:
+ res = dispatchSetBufferCount(args);
+ break;
+ case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
+ res = dispatchSetBuffersGeometry(args);
+ break;
+ case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
+ res = dispatchSetBuffersTransform(args);
+ break;
+ default:
+ res = NAME_NOT_FOUND;
+ break;
+ }
+ return res;
+}
+
+int SurfaceTextureClient::dispatchConnect(va_list args) {
+ int api = va_arg(args, int);
+ return connect(api);
+}
+
+int SurfaceTextureClient::dispatchDisconnect(va_list args) {
+ int api = va_arg(args, int);
+ return disconnect(api);
+}
+
+int SurfaceTextureClient::dispatchSetUsage(va_list args) {
+ int usage = va_arg(args, int);
+ return setUsage(usage);
+}
+
+int SurfaceTextureClient::dispatchSetCrop(va_list args) {
+ android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
+ return setCrop(reinterpret_cast<Rect const*>(rect));
+}
+
+int SurfaceTextureClient::dispatchSetBufferCount(va_list args) {
+ size_t bufferCount = va_arg(args, size_t);
+ return setBufferCount(bufferCount);
+}
+
+int SurfaceTextureClient::dispatchSetBuffersGeometry(va_list args) {
+ int w = va_arg(args, int);
+ int h = va_arg(args, int);
+ int f = va_arg(args, int);
+ return setBuffersGeometry(w, h, f);
+}
+
+int SurfaceTextureClient::dispatchSetBuffersTransform(va_list args) {
+ int transform = va_arg(args, int);
+ return setBuffersTransform(transform);
+}
+
+int SurfaceTextureClient::connect(int api) {
+ // XXX: Implement this!
+ return INVALID_OPERATION;
+}
+
+int SurfaceTextureClient::disconnect(int api) {
+ // XXX: Implement this!
+ return INVALID_OPERATION;
+}
+
+int SurfaceTextureClient::setUsage(uint32_t reqUsage)
+{
+ Mutex::Autolock lock(mMutex);
+ mReqUsage = reqUsage;
+ return OK;
+}
+
+int SurfaceTextureClient::setCrop(Rect const* rect)
+{
+ Mutex::Autolock lock(mMutex);
+
+ // empty/invalid rects are not allowed
+ if (rect->isEmpty())
+ return BAD_VALUE;
+
+ status_t err = mSurfaceTexture->setCrop(*rect);
+ LOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s",
+ strerror(-err));
+
+ return err;
+}
+
+int SurfaceTextureClient::setBufferCount(int bufferCount)
+{
+ Mutex::Autolock lock(mMutex);
+
+ status_t err = mSurfaceTexture->setBufferCount(bufferCount);
+ LOGE_IF(err, "ISurfaceTexture::setBufferCount(%d) returned %s",
+ bufferCount, strerror(-err));
+
+ if (err == NO_ERROR) {
+ freeAllBuffers();
+ }
+
+ return err;
+}
+
+int SurfaceTextureClient::setBuffersGeometry(int w, int h, int format)
+{
+ Mutex::Autolock lock(mMutex);
+
+ if (w<0 || h<0 || format<0)
+ return BAD_VALUE;
+
+ if ((w && !h) || (!w && h))
+ return BAD_VALUE;
+
+ mReqWidth = w;
+ mReqHeight = h;
+ mReqFormat = format;
+
+ return NO_ERROR;
+}
+
+int SurfaceTextureClient::setBuffersTransform(int transform)
+{
+ Mutex::Autolock lock(mMutex);
+ status_t err = mSurfaceTexture->setTransform(transform);
+ return err;
+}
+
+void SurfaceTextureClient::freeAllBuffers() {
+ for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
+ mSlots[i] = 0;
+ }
+}
+
+}; // namespace android