libs/gui/SurfaceTextureClient.cpp - platform/frameworks/base - Gitiles

 /*
  * 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"
 //#define LOG_NDEBUG 0

 #include <gui/SurfaceTextureClient.h>

 #include <utils/Log.h>

 namespace android {

 SurfaceTextureClient::SurfaceTextureClient(
         const sp<ISurfaceTexture>& surfaceTexture):
         mSurfaceTexture(surfaceTexture), mAllocator(0), mReqWidth(0),
         mReqHeight(0), mReqFormat(0), mReqUsage(0),
         mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO), mConnectedApi(0),
         mQueryWidth(0), mQueryHeight(0), mQueryFormat(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;

     // Get a reference to the allocator.
     mAllocator = mSurfaceTexture->getAllocator();
 }

 sp<ISurfaceTexture> SurfaceTextureClient::getISurfaceTexture() const {
     return mSurfaceTexture;
 }

 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) {
     LOGV("SurfaceTextureClient::dequeueBuffer");
     Mutex::Autolock lock(mMutex);
     int buf = -1;
     status_t err = mSurfaceTexture->dequeueBuffer(&buf);
     if (err < 0) {
         LOGV("dequeueBuffer: ISurfaceTexture::dequeueBuffer failed: %d", err);
         return err;
     }
     sp<GraphicBuffer>& gbuf(mSlots[buf]);
     if (err == ISurfaceTexture::BUFFER_NEEDS_REALLOCATION ||
         gbuf == 0 ||
         (mReqWidth && gbuf->getWidth() != mReqWidth) ||
         (mReqHeight && gbuf->getHeight() != mReqHeight) ||
         (mReqFormat && uint32_t(gbuf->getPixelFormat()) != mReqFormat) ||
         (gbuf->getUsage() & mReqUsage) != mReqUsage) {
         gbuf = mSurfaceTexture->requestBuffer(buf, mReqWidth, mReqHeight,
                 mReqFormat, mReqUsage);
         if (gbuf == 0) {
             LOGE("dequeueBuffer: ISurfaceTexture::requestBuffer failed");
             return NO_MEMORY;
         }
         mQueryWidth  = gbuf->width;
         mQueryHeight = gbuf->height;
         mQueryFormat = gbuf->format;
     }
     *buffer = gbuf.get();
     return OK;
 }

 int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer) {
     LOGV("SurfaceTextureClient::cancelBuffer");
     Mutex::Autolock lock(mMutex);
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
         if (mSlots[i]->handle == buffer->handle) {
             mSurfaceTexture->cancelBuffer(i);
             return OK;
         }
     }
     return BAD_VALUE;
 }

 int SurfaceTextureClient::lockBuffer(android_native_buffer_t* buffer) {
     LOGV("SurfaceTextureClient::lockBuffer");
     Mutex::Autolock lock(mMutex);
     return OK;
 }

 int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer) {
     LOGV("SurfaceTextureClient::queueBuffer");
     Mutex::Autolock lock(mMutex);
     int64_t timestamp;
     if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
         timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
         LOGV("SurfaceTextureClient::queueBuffer making up timestamp: %.2f ms",
              timestamp / 1000000.f);
     } else {
         timestamp = mTimestamp;
     }
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
         if (mSlots[i]->handle == buffer->handle) {
             return mSurfaceTexture->queueBuffer(i, timestamp);
         }
     }
     LOGE("queueBuffer: unknown buffer queued");
     return BAD_VALUE;
 }

 int SurfaceTextureClient::query(int what, int* value) {
     LOGV("SurfaceTextureClient::query");
     Mutex::Autolock lock(mMutex);
     switch (what) {
     case NATIVE_WINDOW_WIDTH:
         *value = mQueryWidth ? mQueryWidth : mReqWidth;
         return NO_ERROR;
     case NATIVE_WINDOW_HEIGHT:
         *value = mQueryHeight ? mQueryHeight : mReqHeight;
         return NO_ERROR;
     case NATIVE_WINDOW_FORMAT:
         *value = mQueryFormat ? mQueryFormat : mReqFormat;
         return NO_ERROR;
     case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
         *value = MIN_UNDEQUEUED_BUFFERS;
         return NO_ERROR;
     case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
         // SurfaceTextureClient currently never queues frames to SurfaceFlinger.
         *value = 0;
         return NO_ERROR;
     case NATIVE_WINDOW_CONCRETE_TYPE:
         *value = NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT;
         return NO_ERROR;
     }
     return BAD_VALUE;
 }

 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;
     case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
         res = dispatchSetBuffersTimestamp(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::dispatchSetBuffersTimestamp(va_list args) {
     int64_t timestamp = va_arg(args, int64_t);
     return setBuffersTimestamp(timestamp);
 }

 int SurfaceTextureClient::connect(int api) {
     LOGV("SurfaceTextureClient::connect");
     Mutex::Autolock lock(mMutex);
     int err = NO_ERROR;
     switch (api) {
         case NATIVE_WINDOW_API_EGL:
             if (mConnectedApi) {
                 err = -EINVAL;
             } else {
                 mConnectedApi = api;
             }
             break;
         default:
             err = -EINVAL;
             break;
     }
     return err;
 }

 int SurfaceTextureClient::disconnect(int api) {
     LOGV("SurfaceTextureClient::disconnect");
     Mutex::Autolock lock(mMutex);
     int err = NO_ERROR;
     switch (api) {
         case NATIVE_WINDOW_API_EGL:
             if (mConnectedApi == api) {
                 mConnectedApi = 0;
             } else {
                 err = -EINVAL;
             }
             break;
         default:
             err = -EINVAL;
             break;
     }
     return err;
 }

 int SurfaceTextureClient::getConnectedApi() const
 {
     Mutex::Autolock lock(mMutex);
     return mConnectedApi;
 }


 int SurfaceTextureClient::setUsage(uint32_t reqUsage)
 {
     LOGV("SurfaceTextureClient::setUsage");
     Mutex::Autolock lock(mMutex);
     mReqUsage = reqUsage;
     return OK;
 }

 int SurfaceTextureClient::setCrop(Rect const* rect)
 {
     LOGV("SurfaceTextureClient::setCrop");
     Mutex::Autolock lock(mMutex);

     Rect realRect;
     if (rect == NULL || rect->isEmpty()) {
         realRect = Rect(0, 0);
     } else {
         realRect = *rect;
     }

     status_t err = mSurfaceTexture->setCrop(*rect);
     LOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));

     return err;
 }

 int SurfaceTextureClient::setBufferCount(int bufferCount)
 {
     LOGV("SurfaceTextureClient::setBufferCount");
     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)
 {
     LOGV("SurfaceTextureClient::setBuffersGeometry");
     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;

     status_t err = mSurfaceTexture->setCrop(Rect(0, 0));
     LOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));

     return err;
 }

 int SurfaceTextureClient::setBuffersTransform(int transform)
 {
     LOGV("SurfaceTextureClient::setBuffersTransform");
     Mutex::Autolock lock(mMutex);
     status_t err = mSurfaceTexture->setTransform(transform);
     return err;
 }

 int SurfaceTextureClient::setBuffersTimestamp(int64_t timestamp)
 {
     LOGV("SurfaceTextureClient::setBuffersTimestamp");
     Mutex::Autolock lock(mMutex);
     mTimestamp = timestamp;
     return NO_ERROR;
 }

 void SurfaceTextureClient::freeAllBuffers() {
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
         mSlots[i] = 0;
     }
 }

 }; // namespace android
	/*
	* 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"
	//#define LOG_NDEBUG 0

	#include <gui/SurfaceTextureClient.h>

	#include <utils/Log.h>

	namespace android {

	SurfaceTextureClient::SurfaceTextureClient(
	const sp<ISurfaceTexture>& surfaceTexture):
	mSurfaceTexture(surfaceTexture), mAllocator(0), mReqWidth(0),
	mReqHeight(0), mReqFormat(0), mReqUsage(0),
	mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO), mConnectedApi(0),
	mQueryWidth(0), mQueryHeight(0), mQueryFormat(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;

	// Get a reference to the allocator.
	mAllocator = mSurfaceTexture->getAllocator();
	}

	sp<ISurfaceTexture> SurfaceTextureClient::getISurfaceTexture() const {
	return mSurfaceTexture;
	}

	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) {
	LOGV("SurfaceTextureClient::dequeueBuffer");
	Mutex::Autolock lock(mMutex);
	int buf = -1;
	status_t err = mSurfaceTexture->dequeueBuffer(&buf);
	if (err < 0) {
	LOGV("dequeueBuffer: ISurfaceTexture::dequeueBuffer failed: %d", err);
	return err;
	}
	sp<GraphicBuffer>& gbuf(mSlots[buf]);
	if (err == ISurfaceTexture::BUFFER_NEEDS_REALLOCATION \|\|
	gbuf == 0 \|\|
	(mReqWidth && gbuf->getWidth() != mReqWidth) \|\|
	(mReqHeight && gbuf->getHeight() != mReqHeight) \|\|
	(mReqFormat && uint32_t(gbuf->getPixelFormat()) != mReqFormat) \|\|
	(gbuf->getUsage() & mReqUsage) != mReqUsage) {
	gbuf = mSurfaceTexture->requestBuffer(buf, mReqWidth, mReqHeight,
	mReqFormat, mReqUsage);
	if (gbuf == 0) {
	LOGE("dequeueBuffer: ISurfaceTexture::requestBuffer failed");
	return NO_MEMORY;
	}
	mQueryWidth = gbuf->width;
	mQueryHeight = gbuf->height;
	mQueryFormat = gbuf->format;
	}
	*buffer = gbuf.get();
	return OK;
	}

	int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer) {
	LOGV("SurfaceTextureClient::cancelBuffer");
	Mutex::Autolock lock(mMutex);
	for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
	if (mSlots[i]->handle == buffer->handle) {
	mSurfaceTexture->cancelBuffer(i);
	return OK;
	}
	}
	return BAD_VALUE;
	}

	int SurfaceTextureClient::lockBuffer(android_native_buffer_t* buffer) {
	LOGV("SurfaceTextureClient::lockBuffer");
	Mutex::Autolock lock(mMutex);
	return OK;
	}

	int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer) {
	LOGV("SurfaceTextureClient::queueBuffer");
	Mutex::Autolock lock(mMutex);
	int64_t timestamp;
	if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
	timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
	LOGV("SurfaceTextureClient::queueBuffer making up timestamp: %.2f ms",
	timestamp / 1000000.f);
	} else {
	timestamp = mTimestamp;
	}
	for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
	if (mSlots[i]->handle == buffer->handle) {
	return mSurfaceTexture->queueBuffer(i, timestamp);
	}
	}
	LOGE("queueBuffer: unknown buffer queued");
	return BAD_VALUE;
	}

	int SurfaceTextureClient::query(int what, int* value) {
	LOGV("SurfaceTextureClient::query");
	Mutex::Autolock lock(mMutex);
	switch (what) {
	case NATIVE_WINDOW_WIDTH:
	*value = mQueryWidth ? mQueryWidth : mReqWidth;
	return NO_ERROR;
	case NATIVE_WINDOW_HEIGHT:
	*value = mQueryHeight ? mQueryHeight : mReqHeight;
	return NO_ERROR;
	case NATIVE_WINDOW_FORMAT:
	*value = mQueryFormat ? mQueryFormat : mReqFormat;
	return NO_ERROR;
	case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
	*value = MIN_UNDEQUEUED_BUFFERS;
	return NO_ERROR;
	case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
	// SurfaceTextureClient currently never queues frames to SurfaceFlinger.
	*value = 0;
	return NO_ERROR;
	case NATIVE_WINDOW_CONCRETE_TYPE:
	*value = NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT;
	return NO_ERROR;
	}
	return BAD_VALUE;
	}

	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;
	case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
	res = dispatchSetBuffersTimestamp(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::dispatchSetBuffersTimestamp(va_list args) {
	int64_t timestamp = va_arg(args, int64_t);
	return setBuffersTimestamp(timestamp);
	}

	int SurfaceTextureClient::connect(int api) {
	LOGV("SurfaceTextureClient::connect");
	Mutex::Autolock lock(mMutex);
	int err = NO_ERROR;
	switch (api) {
	case NATIVE_WINDOW_API_EGL:
	if (mConnectedApi) {
	err = -EINVAL;
	} else {
	mConnectedApi = api;
	}
	break;
	default:
	err = -EINVAL;
	break;
	}
	return err;
	}

	int SurfaceTextureClient::disconnect(int api) {
	LOGV("SurfaceTextureClient::disconnect");
	Mutex::Autolock lock(mMutex);
	int err = NO_ERROR;
	switch (api) {
	case NATIVE_WINDOW_API_EGL:
	if (mConnectedApi == api) {
	mConnectedApi = 0;
	} else {
	err = -EINVAL;
	}
	break;
	default:
	err = -EINVAL;
	break;
	}
	return err;
	}

	int SurfaceTextureClient::getConnectedApi() const
	{
	Mutex::Autolock lock(mMutex);
	return mConnectedApi;
	}


	int SurfaceTextureClient::setUsage(uint32_t reqUsage)
	{
	LOGV("SurfaceTextureClient::setUsage");
	Mutex::Autolock lock(mMutex);
	mReqUsage = reqUsage;
	return OK;
	}

	int SurfaceTextureClient::setCrop(Rect const* rect)
	{
	LOGV("SurfaceTextureClient::setCrop");
	Mutex::Autolock lock(mMutex);

	Rect realRect;
	if (rect == NULL \|\| rect->isEmpty()) {
	realRect = Rect(0, 0);
	} else {
	realRect = *rect;
	}

	status_t err = mSurfaceTexture->setCrop(*rect);
	LOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));

	return err;
	}

	int SurfaceTextureClient::setBufferCount(int bufferCount)
	{
	LOGV("SurfaceTextureClient::setBufferCount");
	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)
	{
	LOGV("SurfaceTextureClient::setBuffersGeometry");
	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;

	status_t err = mSurfaceTexture->setCrop(Rect(0, 0));
	LOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));

	return err;
	}

	int SurfaceTextureClient::setBuffersTransform(int transform)
	{
	LOGV("SurfaceTextureClient::setBuffersTransform");
	Mutex::Autolock lock(mMutex);
	status_t err = mSurfaceTexture->setTransform(transform);
	return err;
	}

	int SurfaceTextureClient::setBuffersTimestamp(int64_t timestamp)
	{
	LOGV("SurfaceTextureClient::setBuffersTimestamp");
	Mutex::Autolock lock(mMutex);
	mTimestamp = timestamp;
	return NO_ERROR;
	}

	void SurfaceTextureClient::freeAllBuffers() {
	for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
	mSlots[i] = 0;
	}
	}

	}; // namespace android