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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 "SurfaceTextureClient"
//#define LOG_NDEBUG 0
#include <gui/SurfaceTextureClient.h>
#include <surfaceflinger/ISurfaceComposer.h>
#include <surfaceflinger/SurfaceComposerClient.h>
#include <utils/Log.h>
namespace android {
SurfaceTextureClient::SurfaceTextureClient(
const sp<ISurfaceTexture>& surfaceTexture)
{
SurfaceTextureClient::init();
SurfaceTextureClient::setISurfaceTexture(surfaceTexture);
}
SurfaceTextureClient::SurfaceTextureClient() {
SurfaceTextureClient::init();
}
SurfaceTextureClient::~SurfaceTextureClient() {
if (mConnectedToCpu) {
SurfaceTextureClient::disconnect(NATIVE_WINDOW_API_CPU);
}
}
void SurfaceTextureClient::init() {
// Initialize the ANativeWindow function pointers.
ANativeWindow::setSwapInterval = hook_setSwapInterval;
ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
ANativeWindow::cancelBuffer = hook_cancelBuffer;
ANativeWindow::lockBuffer = hook_lockBuffer;
ANativeWindow::queueBuffer = hook_queueBuffer;
ANativeWindow::query = hook_query;
ANativeWindow::perform = hook_perform;
const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
mReqWidth = 0;
mReqHeight = 0;
mReqFormat = 0;
mReqUsage = 0;
mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
mDefaultWidth = 0;
mDefaultHeight = 0;
mTransformHint = 0;
mConnectedToCpu = false;
}
void SurfaceTextureClient::setISurfaceTexture(
const sp<ISurfaceTexture>& surfaceTexture)
{
mSurfaceTexture = surfaceTexture;
}
sp<ISurfaceTexture> SurfaceTextureClient::getISurfaceTexture() const {
return mSurfaceTexture;
}
int SurfaceTextureClient::hook_setSwapInterval(ANativeWindow* window, int interval) {
SurfaceTextureClient* c = getSelf(window);
return c->setSwapInterval(interval);
}
int SurfaceTextureClient::hook_dequeueBuffer(ANativeWindow* window,
ANativeWindowBuffer** buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->dequeueBuffer(buffer);
}
int SurfaceTextureClient::hook_cancelBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->cancelBuffer(buffer);
}
int SurfaceTextureClient::hook_lockBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->lockBuffer(buffer);
}
int SurfaceTextureClient::hook_queueBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->queueBuffer(buffer);
}
int SurfaceTextureClient::hook_query(const ANativeWindow* window,
int what, int* value) {
const SurfaceTextureClient* c = getSelf(window);
return c->query(what, value);
}
int SurfaceTextureClient::hook_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) {
// EGL specification states:
// interval is silently clamped to minimum and maximum implementation
// dependent values before being stored.
// Although we don't have to, we apply the same logic here.
if (interval < minSwapInterval)
interval = minSwapInterval;
if (interval > maxSwapInterval)
interval = maxSwapInterval;
status_t res = mSurfaceTexture->setSynchronousMode(interval ? true : false);
return res;
}
int SurfaceTextureClient::dequeueBuffer(android_native_buffer_t** buffer) {
ALOGV("SurfaceTextureClient::dequeueBuffer");
Mutex::Autolock lock(mMutex);
int buf = -1;
status_t result = mSurfaceTexture->dequeueBuffer(&buf, mReqWidth, mReqHeight,
mReqFormat, mReqUsage);
if (result < 0) {
ALOGV("dequeueBuffer: ISurfaceTexture::dequeueBuffer(%d, %d, %d, %d)"
"failed: %d", mReqWidth, mReqHeight, mReqFormat, mReqUsage,
result);
return result;
}
sp<GraphicBuffer>& gbuf(mSlots[buf]);
if (result & ISurfaceTexture::RELEASE_ALL_BUFFERS) {
freeAllBuffers();
}
if ((result & ISurfaceTexture::BUFFER_NEEDS_REALLOCATION) || gbuf == 0) {
result = mSurfaceTexture->requestBuffer(buf, &gbuf);
if (result != NO_ERROR) {
ALOGE("dequeueBuffer: ISurfaceTexture::requestBuffer failed: %d",
result);
return result;
}
}
*buffer = gbuf.get();
return OK;
}
int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer) {
ALOGV("SurfaceTextureClient::cancelBuffer");
Mutex::Autolock lock(mMutex);
int i = getSlotFromBufferLocked(buffer);
if (i < 0) {
return i;
}
mSurfaceTexture->cancelBuffer(i);
return OK;
}
int SurfaceTextureClient::getSlotFromBufferLocked(
android_native_buffer_t* buffer) const {
bool dumpedState = false;
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
// XXX: Dump the slots whenever we hit a NULL entry while searching for
// a buffer.
if (mSlots[i] == NULL) {
if (!dumpedState) {
ALOGD("getSlotFromBufferLocked: encountered NULL buffer in slot %d "
"looking for buffer %p", i, buffer->handle);
for (int j = 0; j < NUM_BUFFER_SLOTS; j++) {
if (mSlots[j] == NULL) {
ALOGD("getSlotFromBufferLocked: %02d: NULL", j);
} else {
ALOGD("getSlotFromBufferLocked: %02d: %p", j, mSlots[j]->handle);
}
}
dumpedState = true;
}
}
if (mSlots[i] != NULL && mSlots[i]->handle == buffer->handle) {
return i;
}
}
ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
return BAD_VALUE;
}
int SurfaceTextureClient::lockBuffer(android_native_buffer_t* buffer) {
ALOGV("SurfaceTextureClient::lockBuffer");
Mutex::Autolock lock(mMutex);
return OK;
}
int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer) {
ALOGV("SurfaceTextureClient::queueBuffer");
Mutex::Autolock lock(mMutex);
int64_t timestamp;
if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
ALOGV("SurfaceTextureClient::queueBuffer making up timestamp: %.2f ms",
timestamp / 1000000.f);
} else {
timestamp = mTimestamp;
}
int i = getSlotFromBufferLocked(buffer);
if (i < 0) {
return i;
}
status_t err = mSurfaceTexture->queueBuffer(i, timestamp,
&mDefaultWidth, &mDefaultHeight, &mTransformHint);
if (err != OK) {
ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
}
return err;
}
int SurfaceTextureClient::query(int what, int* value) const {
ALOGV("SurfaceTextureClient::query");
{ // scope for the lock
Mutex::Autolock lock(mMutex);
switch (what) {
case NATIVE_WINDOW_FORMAT:
if (mReqFormat) {
*value = mReqFormat;
return NO_ERROR;
}
break;
case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
{
sp<ISurfaceComposer> composer(
ComposerService::getComposerService());
if (composer->authenticateSurfaceTexture(mSurfaceTexture)) {
*value = 1;
} else {
*value = 0;
}
}
return NO_ERROR;
case NATIVE_WINDOW_CONCRETE_TYPE:
*value = NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_WIDTH:
*value = mDefaultWidth;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_HEIGHT:
*value = mDefaultHeight;
return NO_ERROR;
case NATIVE_WINDOW_TRANSFORM_HINT:
*value = mTransformHint;
return NO_ERROR;
}
}
return mSurfaceTexture->query(what, value);
}
int SurfaceTextureClient::perform(int operation, va_list args)
{
int res = NO_ERROR;
switch (operation) {
case NATIVE_WINDOW_CONNECT:
// deprecated. must return NO_ERROR.
break;
case NATIVE_WINDOW_DISCONNECT:
// deprecated. must return NO_ERROR.
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;
case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
res = dispatchSetBuffersDimensions(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
res = dispatchSetBuffersFormat(args);
break;
case NATIVE_WINDOW_LOCK:
res = dispatchLock(args);
break;
case NATIVE_WINDOW_UNLOCK_AND_POST:
res = dispatchUnlockAndPost(args);
break;
case NATIVE_WINDOW_SET_SCALING_MODE:
res = dispatchSetScalingMode(args);
break;
case NATIVE_WINDOW_API_CONNECT:
res = dispatchConnect(args);
break;
case NATIVE_WINDOW_API_DISCONNECT:
res = dispatchDisconnect(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);
int err = setBuffersDimensions(w, h);
if (err != 0) {
return err;
}
return setBuffersFormat(f);
}
int SurfaceTextureClient::dispatchSetBuffersDimensions(va_list args) {
int w = va_arg(args, int);
int h = va_arg(args, int);
return setBuffersDimensions(w, h);
}
int SurfaceTextureClient::dispatchSetBuffersFormat(va_list args) {
int f = va_arg(args, int);
return setBuffersFormat(f);
}
int SurfaceTextureClient::dispatchSetScalingMode(va_list args) {
int m = va_arg(args, int);
return setScalingMode(m);
}
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::dispatchLock(va_list args) {
ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
ARect* inOutDirtyBounds = va_arg(args, ARect*);
return lock(outBuffer, inOutDirtyBounds);
}
int SurfaceTextureClient::dispatchUnlockAndPost(va_list args) {
return unlockAndPost();
}
int SurfaceTextureClient::connect(int api) {
ALOGV("SurfaceTextureClient::connect");
Mutex::Autolock lock(mMutex);
int err = mSurfaceTexture->connect(api,
&mDefaultWidth, &mDefaultHeight, &mTransformHint);
if (!err && api == NATIVE_WINDOW_API_CPU) {
mConnectedToCpu = true;
}
return err;
}
int SurfaceTextureClient::disconnect(int api) {
ALOGV("SurfaceTextureClient::disconnect");
Mutex::Autolock lock(mMutex);
freeAllBuffers();
int err = mSurfaceTexture->disconnect(api);
if (!err) {
mReqFormat = 0;
mReqWidth = 0;
mReqHeight = 0;
mReqUsage = 0;
if (api == NATIVE_WINDOW_API_CPU) {
mConnectedToCpu = false;
}
}
return err;
}
int SurfaceTextureClient::setUsage(uint32_t reqUsage)
{
ALOGV("SurfaceTextureClient::setUsage");
Mutex::Autolock lock(mMutex);
mReqUsage = reqUsage;
return OK;
}
int SurfaceTextureClient::setCrop(Rect const* rect)
{
ALOGV("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);
ALOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));
return err;
}
int SurfaceTextureClient::setBufferCount(int bufferCount)
{
ALOGV("SurfaceTextureClient::setBufferCount");
Mutex::Autolock lock(mMutex);
status_t err = mSurfaceTexture->setBufferCount(bufferCount);
ALOGE_IF(err, "ISurfaceTexture::setBufferCount(%d) returned %s",
bufferCount, strerror(-err));
if (err == NO_ERROR) {
freeAllBuffers();
}
return err;
}
int SurfaceTextureClient::setBuffersDimensions(int w, int h)
{
ALOGV("SurfaceTextureClient::setBuffersDimensions");
Mutex::Autolock lock(mMutex);
if (w<0 || h<0)
return BAD_VALUE;
if ((w && !h) || (!w && h))
return BAD_VALUE;
mReqWidth = w;
mReqHeight = h;
status_t err = mSurfaceTexture->setCrop(Rect(0, 0));
ALOGE_IF(err, "ISurfaceTexture::setCrop(...) returned %s", strerror(-err));
return err;
}
int SurfaceTextureClient::setBuffersFormat(int format)
{
ALOGV("SurfaceTextureClient::setBuffersFormat");
Mutex::Autolock lock(mMutex);
if (format<0)
return BAD_VALUE;
mReqFormat = format;
return NO_ERROR;
}
int SurfaceTextureClient::setScalingMode(int mode)
{
ALOGV("SurfaceTextureClient::setScalingMode(%d)", mode);
Mutex::Autolock lock(mMutex);
// mode is validated on the server
status_t err = mSurfaceTexture->setScalingMode(mode);
ALOGE_IF(err, "ISurfaceTexture::setScalingMode(%d) returned %s",
mode, strerror(-err));
return err;
}
int SurfaceTextureClient::setBuffersTransform(int transform)
{
ALOGV("SurfaceTextureClient::setBuffersTransform");
Mutex::Autolock lock(mMutex);
status_t err = mSurfaceTexture->setTransform(transform);
return err;
}
int SurfaceTextureClient::setBuffersTimestamp(int64_t timestamp)
{
ALOGV("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;
}
}
// ----------------------------------------------------------------------
// the lock/unlock APIs must be used from the same thread
static status_t copyBlt(
const sp<GraphicBuffer>& dst,
const sp<GraphicBuffer>& src,
const Region& reg)
{
// src and dst with, height and format must be identical. no verification
// is done here.
status_t err;
uint8_t const * src_bits = NULL;
err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
uint8_t* dst_bits = NULL;
err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
Region::const_iterator head(reg.begin());
Region::const_iterator tail(reg.end());
if (head != tail && src_bits && dst_bits) {
const size_t bpp = bytesPerPixel(src->format);
const size_t dbpr = dst->stride * bpp;
const size_t sbpr = src->stride * bpp;
while (head != tail) {
const Rect& r(*head++);
ssize_t h = r.height();
if (h <= 0) continue;
size_t size = r.width() * bpp;
uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
uint8_t * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
if (dbpr==sbpr && size==sbpr) {
size *= h;
h = 1;
}
do {
memcpy(d, s, size);
d += dbpr;
s += sbpr;
} while (--h > 0);
}
}
if (src_bits)
src->unlock();
if (dst_bits)
dst->unlock();
return err;
}
// ----------------------------------------------------------------------------
status_t SurfaceTextureClient::lock(
ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
{
if (mLockedBuffer != 0) {
ALOGE("Surface::lock failed, already locked");
return INVALID_OPERATION;
}
if (!mConnectedToCpu) {
int err = SurfaceTextureClient::connect(NATIVE_WINDOW_API_CPU);
if (err) {
return err;
}
// we're intending to do software rendering from this point
setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
}
ANativeWindowBuffer* out;
status_t err = dequeueBuffer(&out);
ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
if (err == NO_ERROR) {
sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
err = lockBuffer(backBuffer.get());
ALOGE_IF(err, "lockBuffer (handle=%p) failed (%s)",
backBuffer->handle, strerror(-err));
if (err == NO_ERROR) {
const Rect bounds(backBuffer->width, backBuffer->height);
Region newDirtyRegion;
if (inOutDirtyBounds) {
newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
newDirtyRegion.andSelf(bounds);
} else {
newDirtyRegion.set(bounds);
}
// figure out if we can copy the frontbuffer back
const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
const bool canCopyBack = (frontBuffer != 0 &&
backBuffer->width == frontBuffer->width &&
backBuffer->height == frontBuffer->height &&
backBuffer->format == frontBuffer->format);
if (canCopyBack) {
// copy the area that is invalid and not repainted this round
const Region copyback(mOldDirtyRegion.subtract(newDirtyRegion));
if (!copyback.isEmpty())
copyBlt(backBuffer, frontBuffer, copyback);
} else {
// if we can't copy-back anything, modify the user's dirty
// region to make sure they redraw the whole buffer
newDirtyRegion.set(bounds);
}
// keep track of the are of the buffer that is "clean"
// (ie: that will be redrawn)
mOldDirtyRegion = newDirtyRegion;
if (inOutDirtyBounds) {
*inOutDirtyBounds = newDirtyRegion.getBounds();
}
void* vaddr;
status_t res = backBuffer->lock(
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
newDirtyRegion.bounds(), &vaddr);
ALOGW_IF(res, "failed locking buffer (handle = %p)",
backBuffer->handle);
mLockedBuffer = backBuffer;
outBuffer->width = backBuffer->width;
outBuffer->height = backBuffer->height;
outBuffer->stride = backBuffer->stride;
outBuffer->format = backBuffer->format;
outBuffer->bits = vaddr;
}
}
return err;
}
status_t SurfaceTextureClient::unlockAndPost()
{
if (mLockedBuffer == 0) {
ALOGE("Surface::unlockAndPost failed, no locked buffer");
return INVALID_OPERATION;
}
status_t err = mLockedBuffer->unlock();
ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
err = queueBuffer(mLockedBuffer.get());
ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
mLockedBuffer->handle, strerror(-err));
mPostedBuffer = mLockedBuffer;
mLockedBuffer = 0;
return err;
}
}; // namespace android