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/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