1132 lines
36 KiB
C++
1132 lines
36 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "SurfaceTexture"
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//#define LOG_NDEBUG 0
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#define GL_GLEXT_PROTOTYPES
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#define EGL_EGLEXT_PROTOTYPES
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <gui/SurfaceTexture.h>
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#include <hardware/hardware.h>
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#include <surfaceflinger/ISurfaceComposer.h>
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#include <surfaceflinger/SurfaceComposerClient.h>
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#include <surfaceflinger/IGraphicBufferAlloc.h>
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#include <utils/Log.h>
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#include <utils/String8.h>
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#define ALLOW_DEQUEUE_CURRENT_BUFFER false
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// Macros for including the SurfaceTexture name in log messages
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#define ST_LOGV(x, ...) LOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define ST_LOGD(x, ...) LOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define ST_LOGI(x, ...) LOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define ST_LOGW(x, ...) LOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define ST_LOGE(x, ...) LOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
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namespace android {
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// Transform matrices
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static float mtxIdentity[16] = {
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1, 0, 0, 0,
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0, 1, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1,
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};
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static float mtxFlipH[16] = {
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-1, 0, 0, 0,
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0, 1, 0, 0,
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0, 0, 1, 0,
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1, 0, 0, 1,
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};
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static float mtxFlipV[16] = {
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1, 0, 0, 0,
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0, -1, 0, 0,
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0, 0, 1, 0,
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0, 1, 0, 1,
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};
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static float mtxRot90[16] = {
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0, 1, 0, 0,
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-1, 0, 0, 0,
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0, 0, 1, 0,
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1, 0, 0, 1,
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};
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static float mtxRot180[16] = {
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-1, 0, 0, 0,
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0, -1, 0, 0,
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0, 0, 1, 0,
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1, 1, 0, 1,
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};
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static float mtxRot270[16] = {
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0, -1, 0, 0,
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1, 0, 0, 0,
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0, 0, 1, 0,
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0, 1, 0, 1,
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};
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static void mtxMul(float out[16], const float a[16], const float b[16]);
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// Get an ID that's unique within this process.
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static int32_t createProcessUniqueId() {
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static volatile int32_t globalCounter = 0;
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return android_atomic_inc(&globalCounter);
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}
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SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode,
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GLenum texTarget) :
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mDefaultWidth(1),
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mDefaultHeight(1),
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mPixelFormat(PIXEL_FORMAT_RGBA_8888),
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mBufferCount(MIN_ASYNC_BUFFER_SLOTS),
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mClientBufferCount(0),
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mServerBufferCount(MIN_ASYNC_BUFFER_SLOTS),
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mCurrentTexture(INVALID_BUFFER_SLOT),
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mCurrentTransform(0),
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mCurrentTimestamp(0),
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mNextTransform(0),
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mNextScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
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mTexName(tex),
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mSynchronousMode(false),
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mAllowSynchronousMode(allowSynchronousMode),
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mConnectedApi(NO_CONNECTED_API),
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mAbandoned(false),
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mTexTarget(texTarget) {
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// Choose a name using the PID and a process-unique ID.
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mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
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ST_LOGV("SurfaceTexture");
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sp<ISurfaceComposer> composer(ComposerService::getComposerService());
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mGraphicBufferAlloc = composer->createGraphicBufferAlloc();
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mNextCrop.makeInvalid();
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memcpy(mCurrentTransformMatrix, mtxIdentity,
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sizeof(mCurrentTransformMatrix));
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}
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SurfaceTexture::~SurfaceTexture() {
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ST_LOGV("~SurfaceTexture");
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freeAllBuffersLocked();
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}
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status_t SurfaceTexture::setBufferCountServerLocked(int bufferCount) {
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if (bufferCount > NUM_BUFFER_SLOTS)
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return BAD_VALUE;
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// special-case, nothing to do
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if (bufferCount == mBufferCount)
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return OK;
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if (!mClientBufferCount &&
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bufferCount >= mBufferCount) {
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// easy, we just have more buffers
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mBufferCount = bufferCount;
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mServerBufferCount = bufferCount;
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mDequeueCondition.signal();
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} else {
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// we're here because we're either
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// - reducing the number of available buffers
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// - or there is a client-buffer-count in effect
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// less than 2 buffers is never allowed
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if (bufferCount < 2)
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return BAD_VALUE;
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// when there is non client-buffer-count in effect, the client is not
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// allowed to dequeue more than one buffer at a time,
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// so the next time they dequeue a buffer, we know that they don't
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// own one. the actual resizing will happen during the next
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// dequeueBuffer.
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mServerBufferCount = bufferCount;
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}
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return OK;
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}
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status_t SurfaceTexture::setBufferCountServer(int bufferCount) {
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Mutex::Autolock lock(mMutex);
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return setBufferCountServerLocked(bufferCount);
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}
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status_t SurfaceTexture::setBufferCount(int bufferCount) {
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ST_LOGV("setBufferCount: count=%d", bufferCount);
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Mutex::Autolock lock(mMutex);
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if (mAbandoned) {
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ST_LOGE("setBufferCount: SurfaceTexture has been abandoned!");
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return NO_INIT;
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}
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if (bufferCount > NUM_BUFFER_SLOTS) {
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ST_LOGE("setBufferCount: bufferCount larger than slots available");
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return BAD_VALUE;
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}
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// Error out if the user has dequeued buffers
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for (int i=0 ; i<mBufferCount ; i++) {
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if (mSlots[i].mBufferState == BufferSlot::DEQUEUED) {
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ST_LOGE("setBufferCount: client owns some buffers");
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return -EINVAL;
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}
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}
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const int minBufferSlots = mSynchronousMode ?
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MIN_SYNC_BUFFER_SLOTS : MIN_ASYNC_BUFFER_SLOTS;
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if (bufferCount == 0) {
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mClientBufferCount = 0;
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bufferCount = (mServerBufferCount >= minBufferSlots) ?
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mServerBufferCount : minBufferSlots;
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return setBufferCountServerLocked(bufferCount);
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}
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if (bufferCount < minBufferSlots) {
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ST_LOGE("setBufferCount: requested buffer count (%d) is less than "
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"minimum (%d)", bufferCount, minBufferSlots);
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return BAD_VALUE;
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}
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// here we're guaranteed that the client doesn't have dequeued buffers
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// and will release all of its buffer references.
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freeAllBuffersLocked();
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mBufferCount = bufferCount;
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mClientBufferCount = bufferCount;
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mCurrentTexture = INVALID_BUFFER_SLOT;
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mQueue.clear();
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mDequeueCondition.signal();
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return OK;
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}
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status_t SurfaceTexture::setDefaultBufferSize(uint32_t w, uint32_t h)
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{
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ST_LOGV("setDefaultBufferSize: w=%d, h=%d", w, h);
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if (!w || !h) {
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ST_LOGE("setDefaultBufferSize: dimensions cannot be 0 (w=%d, h=%d)",
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w, h);
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return BAD_VALUE;
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}
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Mutex::Autolock lock(mMutex);
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mDefaultWidth = w;
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mDefaultHeight = h;
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return OK;
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}
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status_t SurfaceTexture::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
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ST_LOGV("requestBuffer: slot=%d", slot);
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Mutex::Autolock lock(mMutex);
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if (mAbandoned) {
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ST_LOGE("requestBuffer: SurfaceTexture has been abandoned!");
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return NO_INIT;
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}
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if (slot < 0 || mBufferCount <= slot) {
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ST_LOGE("requestBuffer: slot index out of range [0, %d]: %d",
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mBufferCount, slot);
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return BAD_VALUE;
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}
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mSlots[slot].mRequestBufferCalled = true;
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*buf = mSlots[slot].mGraphicBuffer;
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return NO_ERROR;
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}
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status_t SurfaceTexture::dequeueBuffer(int *outBuf, uint32_t w, uint32_t h,
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uint32_t format, uint32_t usage) {
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ST_LOGV("dequeueBuffer: w=%d h=%d fmt=%#x usage=%#x", w, h, format, usage);
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if ((w && !h) || (!w && h)) {
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ST_LOGE("dequeueBuffer: invalid size: w=%u, h=%u", w, h);
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return BAD_VALUE;
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}
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Mutex::Autolock lock(mMutex);
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status_t returnFlags(OK);
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int found, foundSync;
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int dequeuedCount = 0;
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bool tryAgain = true;
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while (tryAgain) {
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if (mAbandoned) {
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ST_LOGE("dequeueBuffer: SurfaceTexture has been abandoned!");
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return NO_INIT;
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}
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// We need to wait for the FIFO to drain if the number of buffer
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// needs to change.
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//
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// The condition "number of buffers needs to change" is true if
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// - the client doesn't care about how many buffers there are
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// - AND the actual number of buffer is different from what was
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// set in the last setBufferCountServer()
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// - OR -
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// setBufferCountServer() was set to a value incompatible with
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// the synchronization mode (for instance because the sync mode
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// changed since)
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//
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// As long as this condition is true AND the FIFO is not empty, we
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// wait on mDequeueCondition.
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const int minBufferCountNeeded = mSynchronousMode ?
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MIN_SYNC_BUFFER_SLOTS : MIN_ASYNC_BUFFER_SLOTS;
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const bool numberOfBuffersNeedsToChange = !mClientBufferCount &&
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((mServerBufferCount != mBufferCount) ||
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(mServerBufferCount < minBufferCountNeeded));
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if (!mQueue.isEmpty() && numberOfBuffersNeedsToChange) {
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// wait for the FIFO to drain
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mDequeueCondition.wait(mMutex);
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// NOTE: we continue here because we need to reevaluate our
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// whole state (eg: we could be abandoned or disconnected)
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continue;
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}
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if (numberOfBuffersNeedsToChange) {
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// here we're guaranteed that mQueue is empty
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freeAllBuffersLocked();
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mBufferCount = mServerBufferCount;
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if (mBufferCount < minBufferCountNeeded)
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mBufferCount = minBufferCountNeeded;
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mCurrentTexture = INVALID_BUFFER_SLOT;
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returnFlags |= ISurfaceTexture::RELEASE_ALL_BUFFERS;
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}
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// look for a free buffer to give to the client
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found = INVALID_BUFFER_SLOT;
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foundSync = INVALID_BUFFER_SLOT;
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dequeuedCount = 0;
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for (int i = 0; i < mBufferCount; i++) {
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const int state = mSlots[i].mBufferState;
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if (state == BufferSlot::DEQUEUED) {
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dequeuedCount++;
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}
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// if buffer is FREE it CANNOT be current
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LOGW_IF((state == BufferSlot::FREE) && (mCurrentTexture==i),
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"dequeueBuffer: buffer %d is both FREE and current!", i);
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if (ALLOW_DEQUEUE_CURRENT_BUFFER) {
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if (state == BufferSlot::FREE || i == mCurrentTexture) {
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foundSync = i;
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if (i != mCurrentTexture) {
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found = i;
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break;
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}
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}
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} else {
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if (state == BufferSlot::FREE) {
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foundSync = i;
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found = i;
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break;
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}
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}
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}
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// clients are not allowed to dequeue more than one buffer
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// if they didn't set a buffer count.
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if (!mClientBufferCount && dequeuedCount) {
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ST_LOGE("dequeueBuffer: can't dequeue multiple buffers without "
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"setting the buffer count");
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return -EINVAL;
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}
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// See whether a buffer has been queued since the last setBufferCount so
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// we know whether to perform the MIN_UNDEQUEUED_BUFFERS check below.
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bool bufferHasBeenQueued = mCurrentTexture != INVALID_BUFFER_SLOT;
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if (bufferHasBeenQueued) {
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// make sure the client is not trying to dequeue more buffers
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// than allowed.
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const int avail = mBufferCount - (dequeuedCount+1);
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if (avail < (MIN_UNDEQUEUED_BUFFERS-int(mSynchronousMode))) {
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ST_LOGE("dequeueBuffer: MIN_UNDEQUEUED_BUFFERS=%d exceeded "
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"(dequeued=%d)",
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MIN_UNDEQUEUED_BUFFERS-int(mSynchronousMode),
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dequeuedCount);
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return -EBUSY;
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}
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}
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// we're in synchronous mode and didn't find a buffer, we need to wait
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// for some buffers to be consumed
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tryAgain = mSynchronousMode && (foundSync == INVALID_BUFFER_SLOT);
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if (tryAgain) {
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mDequeueCondition.wait(mMutex);
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}
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}
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if (mSynchronousMode && found == INVALID_BUFFER_SLOT) {
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// foundSync guaranteed to be != INVALID_BUFFER_SLOT
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found = foundSync;
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}
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if (found == INVALID_BUFFER_SLOT) {
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// This should not happen.
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ST_LOGE("dequeueBuffer: no available buffer slots");
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return -EBUSY;
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}
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const int buf = found;
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*outBuf = found;
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const bool useDefaultSize = !w && !h;
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if (useDefaultSize) {
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// use the default size
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w = mDefaultWidth;
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h = mDefaultHeight;
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}
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const bool updateFormat = (format != 0);
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if (!updateFormat) {
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// keep the current (or default) format
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format = mPixelFormat;
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}
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// buffer is now in DEQUEUED (but can also be current at the same time,
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// if we're in synchronous mode)
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mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
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const sp<GraphicBuffer>& buffer(mSlots[buf].mGraphicBuffer);
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if ((buffer == NULL) ||
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(uint32_t(buffer->width) != w) ||
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(uint32_t(buffer->height) != h) ||
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(uint32_t(buffer->format) != format) ||
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((uint32_t(buffer->usage) & usage) != usage))
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{
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usage |= GraphicBuffer::USAGE_HW_TEXTURE;
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status_t error;
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sp<GraphicBuffer> graphicBuffer(
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mGraphicBufferAlloc->createGraphicBuffer(
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w, h, format, usage, &error));
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if (graphicBuffer == 0) {
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ST_LOGE("dequeueBuffer: SurfaceComposer::createGraphicBuffer "
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"failed");
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return error;
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}
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if (updateFormat) {
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mPixelFormat = format;
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}
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mSlots[buf].mGraphicBuffer = graphicBuffer;
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mSlots[buf].mRequestBufferCalled = false;
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if (mSlots[buf].mEglImage != EGL_NO_IMAGE_KHR) {
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eglDestroyImageKHR(mSlots[buf].mEglDisplay, mSlots[buf].mEglImage);
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mSlots[buf].mEglImage = EGL_NO_IMAGE_KHR;
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mSlots[buf].mEglDisplay = EGL_NO_DISPLAY;
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}
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returnFlags |= ISurfaceTexture::BUFFER_NEEDS_REALLOCATION;
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}
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ST_LOGV("dequeueBuffer: returning slot=%d buf=%p flags=%#x", buf,
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mSlots[buf].mGraphicBuffer->handle, returnFlags);
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return returnFlags;
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}
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status_t SurfaceTexture::setSynchronousMode(bool enabled) {
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ST_LOGV("setSynchronousMode: enabled=%d", enabled);
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Mutex::Autolock lock(mMutex);
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if (mAbandoned) {
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ST_LOGE("setSynchronousMode: SurfaceTexture has been abandoned!");
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return NO_INIT;
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}
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status_t err = OK;
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if (!mAllowSynchronousMode && enabled)
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return err;
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if (!enabled) {
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// going to asynchronous mode, drain the queue
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err = drainQueueLocked();
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if (err != NO_ERROR)
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return err;
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}
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if (mSynchronousMode != enabled) {
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// - if we're going to asynchronous mode, the queue is guaranteed to be
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// empty here
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// - if the client set the number of buffers, we're guaranteed that
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// we have at least 3 (because we don't allow less)
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mSynchronousMode = enabled;
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mDequeueCondition.signal();
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}
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return err;
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}
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status_t SurfaceTexture::queueBuffer(int buf, int64_t timestamp,
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uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
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ST_LOGV("queueBuffer: slot=%d time=%lld", buf, timestamp);
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sp<FrameAvailableListener> listener;
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{ // scope for the lock
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Mutex::Autolock lock(mMutex);
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if (mAbandoned) {
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ST_LOGE("queueBuffer: SurfaceTexture has been abandoned!");
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return NO_INIT;
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}
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if (buf < 0 || buf >= mBufferCount) {
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ST_LOGE("queueBuffer: slot index out of range [0, %d]: %d",
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mBufferCount, buf);
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return -EINVAL;
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} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
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ST_LOGE("queueBuffer: slot %d is not owned by the client "
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"(state=%d)", buf, mSlots[buf].mBufferState);
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return -EINVAL;
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} else if (buf == mCurrentTexture) {
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ST_LOGE("queueBuffer: slot %d is current!", buf);
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return -EINVAL;
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} else if (!mSlots[buf].mRequestBufferCalled) {
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ST_LOGE("queueBuffer: slot %d was enqueued without requesting a "
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"buffer", buf);
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return -EINVAL;
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}
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if (mSynchronousMode) {
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// In synchronous mode we queue all buffers in a FIFO.
|
|
mQueue.push_back(buf);
|
|
|
|
// Synchronous mode always signals that an additional frame should
|
|
// be consumed.
|
|
listener = mFrameAvailableListener;
|
|
} else {
|
|
// In asynchronous mode we only keep the most recent buffer.
|
|
if (mQueue.empty()) {
|
|
mQueue.push_back(buf);
|
|
|
|
// Asynchronous mode only signals that a frame should be
|
|
// consumed if no previous frame was pending. If a frame were
|
|
// pending then the consumer would have already been notified.
|
|
listener = mFrameAvailableListener;
|
|
} else {
|
|
Fifo::iterator front(mQueue.begin());
|
|
// buffer currently queued is freed
|
|
mSlots[*front].mBufferState = BufferSlot::FREE;
|
|
// and we record the new buffer index in the queued list
|
|
*front = buf;
|
|
}
|
|
}
|
|
|
|
mSlots[buf].mBufferState = BufferSlot::QUEUED;
|
|
mSlots[buf].mCrop = mNextCrop;
|
|
mSlots[buf].mTransform = mNextTransform;
|
|
mSlots[buf].mScalingMode = mNextScalingMode;
|
|
mSlots[buf].mTimestamp = timestamp;
|
|
mDequeueCondition.signal();
|
|
|
|
*outWidth = mDefaultWidth;
|
|
*outHeight = mDefaultHeight;
|
|
*outTransform = 0;
|
|
} // scope for the lock
|
|
|
|
// call back without lock held
|
|
if (listener != 0) {
|
|
listener->onFrameAvailable();
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
void SurfaceTexture::cancelBuffer(int buf) {
|
|
ST_LOGV("cancelBuffer: slot=%d", buf);
|
|
Mutex::Autolock lock(mMutex);
|
|
|
|
if (mAbandoned) {
|
|
ST_LOGW("cancelBuffer: SurfaceTexture has been abandoned!");
|
|
return;
|
|
}
|
|
|
|
if (buf < 0 || buf >= mBufferCount) {
|
|
ST_LOGE("cancelBuffer: slot index out of range [0, %d]: %d",
|
|
mBufferCount, buf);
|
|
return;
|
|
} else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
|
|
ST_LOGE("cancelBuffer: slot %d is not owned by the client (state=%d)",
|
|
buf, mSlots[buf].mBufferState);
|
|
return;
|
|
}
|
|
mSlots[buf].mBufferState = BufferSlot::FREE;
|
|
mDequeueCondition.signal();
|
|
}
|
|
|
|
status_t SurfaceTexture::setCrop(const Rect& crop) {
|
|
ST_LOGV("setCrop: crop=[%d,%d,%d,%d]", crop.left, crop.top, crop.right,
|
|
crop.bottom);
|
|
|
|
Mutex::Autolock lock(mMutex);
|
|
if (mAbandoned) {
|
|
ST_LOGE("setCrop: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
mNextCrop = crop;
|
|
return OK;
|
|
}
|
|
|
|
status_t SurfaceTexture::setTransform(uint32_t transform) {
|
|
ST_LOGV("setTransform: xform=%#x", transform);
|
|
Mutex::Autolock lock(mMutex);
|
|
if (mAbandoned) {
|
|
ST_LOGE("setTransform: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
mNextTransform = transform;
|
|
return OK;
|
|
}
|
|
|
|
status_t SurfaceTexture::connect(int api,
|
|
uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
|
|
ST_LOGV("connect: api=%d", api);
|
|
Mutex::Autolock lock(mMutex);
|
|
|
|
if (mAbandoned) {
|
|
ST_LOGE("connect: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
|
|
int err = NO_ERROR;
|
|
switch (api) {
|
|
case NATIVE_WINDOW_API_EGL:
|
|
case NATIVE_WINDOW_API_CPU:
|
|
case NATIVE_WINDOW_API_MEDIA:
|
|
case NATIVE_WINDOW_API_CAMERA:
|
|
if (mConnectedApi != NO_CONNECTED_API) {
|
|
ST_LOGE("connect: already connected (cur=%d, req=%d)",
|
|
mConnectedApi, api);
|
|
err = -EINVAL;
|
|
} else {
|
|
mConnectedApi = api;
|
|
*outWidth = mDefaultWidth;
|
|
*outHeight = mDefaultHeight;
|
|
*outTransform = 0;
|
|
}
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
status_t SurfaceTexture::disconnect(int api) {
|
|
ST_LOGV("disconnect: api=%d", api);
|
|
Mutex::Autolock lock(mMutex);
|
|
|
|
if (mAbandoned) {
|
|
ST_LOGE("disconnect: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
|
|
int err = NO_ERROR;
|
|
switch (api) {
|
|
case NATIVE_WINDOW_API_EGL:
|
|
case NATIVE_WINDOW_API_CPU:
|
|
case NATIVE_WINDOW_API_MEDIA:
|
|
case NATIVE_WINDOW_API_CAMERA:
|
|
if (mConnectedApi == api) {
|
|
drainQueueAndFreeBuffersLocked();
|
|
mConnectedApi = NO_CONNECTED_API;
|
|
mNextCrop.makeInvalid();
|
|
mNextScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
|
|
mNextTransform = 0;
|
|
mDequeueCondition.signal();
|
|
} else {
|
|
ST_LOGE("disconnect: connected to another api (cur=%d, req=%d)",
|
|
mConnectedApi, api);
|
|
err = -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
ST_LOGE("disconnect: unknown API %d", api);
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
status_t SurfaceTexture::setScalingMode(int mode) {
|
|
ST_LOGV("setScalingMode: mode=%d", mode);
|
|
|
|
switch (mode) {
|
|
case NATIVE_WINDOW_SCALING_MODE_FREEZE:
|
|
case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
|
|
break;
|
|
default:
|
|
ST_LOGE("unknown scaling mode: %d", mode);
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
Mutex::Autolock lock(mMutex);
|
|
mNextScalingMode = mode;
|
|
return OK;
|
|
}
|
|
|
|
status_t SurfaceTexture::updateTexImage() {
|
|
ST_LOGV("updateTexImage");
|
|
Mutex::Autolock lock(mMutex);
|
|
|
|
if (mAbandoned) {
|
|
ST_LOGE("calling updateTexImage() on an abandoned SurfaceTexture");
|
|
return NO_INIT;
|
|
}
|
|
|
|
// In asynchronous mode the list is guaranteed to be one buffer
|
|
// deep, while in synchronous mode we use the oldest buffer.
|
|
if (!mQueue.empty()) {
|
|
Fifo::iterator front(mQueue.begin());
|
|
int buf = *front;
|
|
|
|
// Update the GL texture object.
|
|
EGLImageKHR image = mSlots[buf].mEglImage;
|
|
if (image == EGL_NO_IMAGE_KHR) {
|
|
EGLDisplay dpy = eglGetCurrentDisplay();
|
|
if (mSlots[buf].mGraphicBuffer == 0) {
|
|
ST_LOGE("buffer at slot %d is null", buf);
|
|
return BAD_VALUE;
|
|
}
|
|
image = createImage(dpy, mSlots[buf].mGraphicBuffer);
|
|
mSlots[buf].mEglImage = image;
|
|
mSlots[buf].mEglDisplay = dpy;
|
|
if (image == EGL_NO_IMAGE_KHR) {
|
|
// NOTE: if dpy was invalid, createImage() is guaranteed to
|
|
// fail. so we'd end up here.
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
GLint error;
|
|
while ((error = glGetError()) != GL_NO_ERROR) {
|
|
ST_LOGW("updateTexImage: clearing GL error: %#04x", error);
|
|
}
|
|
|
|
glBindTexture(mTexTarget, mTexName);
|
|
glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);
|
|
|
|
bool failed = false;
|
|
while ((error = glGetError()) != GL_NO_ERROR) {
|
|
ST_LOGE("error binding external texture image %p (slot %d): %#04x",
|
|
image, buf, error);
|
|
failed = true;
|
|
}
|
|
if (failed) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
ST_LOGV("updateTexImage: (slot=%d buf=%p) -> (slot=%d buf=%p)", mCurrentTexture,
|
|
mCurrentTextureBuf != NULL ? mCurrentTextureBuf->handle : 0, buf,
|
|
mSlots[buf].mGraphicBuffer->handle);
|
|
|
|
if (mCurrentTexture != INVALID_BUFFER_SLOT) {
|
|
// The current buffer becomes FREE if it was still in the queued
|
|
// state. If it has already been given to the client
|
|
// (synchronous mode), then it stays in DEQUEUED state.
|
|
if (mSlots[mCurrentTexture].mBufferState == BufferSlot::QUEUED)
|
|
mSlots[mCurrentTexture].mBufferState = BufferSlot::FREE;
|
|
}
|
|
|
|
// Update the SurfaceTexture state.
|
|
mCurrentTexture = buf;
|
|
mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
|
|
mCurrentCrop = mSlots[buf].mCrop;
|
|
mCurrentTransform = mSlots[buf].mTransform;
|
|
mCurrentScalingMode = mSlots[buf].mScalingMode;
|
|
mCurrentTimestamp = mSlots[buf].mTimestamp;
|
|
computeCurrentTransformMatrix();
|
|
|
|
// Now that we've passed the point at which failures can happen,
|
|
// it's safe to remove the buffer from the front of the queue.
|
|
mQueue.erase(front);
|
|
mDequeueCondition.signal();
|
|
} else {
|
|
// We always bind the texture even if we don't update its contents.
|
|
glBindTexture(mTexTarget, mTexName);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
bool SurfaceTexture::isExternalFormat(uint32_t format)
|
|
{
|
|
switch (format) {
|
|
// supported YUV formats
|
|
case HAL_PIXEL_FORMAT_YV12:
|
|
// Legacy/deprecated YUV formats
|
|
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
|
|
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
|
|
case HAL_PIXEL_FORMAT_YCbCr_422_I:
|
|
return true;
|
|
}
|
|
|
|
// Any OEM format needs to be considered
|
|
if (format>=0x100 && format<=0x1FF)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
GLenum SurfaceTexture::getCurrentTextureTarget() const {
|
|
return mTexTarget;
|
|
}
|
|
|
|
void SurfaceTexture::getTransformMatrix(float mtx[16]) {
|
|
Mutex::Autolock lock(mMutex);
|
|
memcpy(mtx, mCurrentTransformMatrix, sizeof(mCurrentTransformMatrix));
|
|
}
|
|
|
|
void SurfaceTexture::computeCurrentTransformMatrix() {
|
|
ST_LOGV("computeCurrentTransformMatrix");
|
|
|
|
float xform[16];
|
|
for (int i = 0; i < 16; i++) {
|
|
xform[i] = mtxIdentity[i];
|
|
}
|
|
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_FLIP_H) {
|
|
float result[16];
|
|
mtxMul(result, xform, mtxFlipH);
|
|
for (int i = 0; i < 16; i++) {
|
|
xform[i] = result[i];
|
|
}
|
|
}
|
|
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_FLIP_V) {
|
|
float result[16];
|
|
mtxMul(result, xform, mtxFlipV);
|
|
for (int i = 0; i < 16; i++) {
|
|
xform[i] = result[i];
|
|
}
|
|
}
|
|
if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
|
|
float result[16];
|
|
mtxMul(result, xform, mtxRot90);
|
|
for (int i = 0; i < 16; i++) {
|
|
xform[i] = result[i];
|
|
}
|
|
}
|
|
|
|
sp<GraphicBuffer>& buf(mSlots[mCurrentTexture].mGraphicBuffer);
|
|
float tx, ty, sx, sy;
|
|
if (!mCurrentCrop.isEmpty()) {
|
|
// In order to prevent bilinear sampling at the of the crop rectangle we
|
|
// may need to shrink it by 2 texels in each direction. Normally this
|
|
// would just need to take 1/2 a texel off each end, but because the
|
|
// chroma channels will likely be subsampled we need to chop off a whole
|
|
// texel. This will cause artifacts if someone does nearest sampling
|
|
// with 1:1 pixel:texel ratio, but it's impossible to simultaneously
|
|
// accomodate the bilinear and nearest sampling uses.
|
|
//
|
|
// If nearest sampling turns out to be a desirable usage of these
|
|
// textures then we could add the ability to switch a SurfaceTexture to
|
|
// nearest-mode. Preferably, however, the image producers (video
|
|
// decoder, camera, etc.) would simply not use a crop rectangle (or at
|
|
// least not tell the framework about it) so that the GPU can do the
|
|
// correct edge behavior.
|
|
int xshrink = 0, yshrink = 0;
|
|
if (mCurrentCrop.left > 0) {
|
|
tx = float(mCurrentCrop.left + 1) / float(buf->getWidth());
|
|
xshrink++;
|
|
} else {
|
|
tx = 0.0f;
|
|
}
|
|
if (mCurrentCrop.right < int32_t(buf->getWidth())) {
|
|
xshrink++;
|
|
}
|
|
if (mCurrentCrop.bottom < int32_t(buf->getHeight())) {
|
|
ty = (float(buf->getHeight() - mCurrentCrop.bottom) + 1.0f) /
|
|
float(buf->getHeight());
|
|
yshrink++;
|
|
} else {
|
|
ty = 0.0f;
|
|
}
|
|
if (mCurrentCrop.top > 0) {
|
|
yshrink++;
|
|
}
|
|
sx = float(mCurrentCrop.width() - xshrink) / float(buf->getWidth());
|
|
sy = float(mCurrentCrop.height() - yshrink) / float(buf->getHeight());
|
|
} else {
|
|
tx = 0.0f;
|
|
ty = 0.0f;
|
|
sx = 1.0f;
|
|
sy = 1.0f;
|
|
}
|
|
float crop[16] = {
|
|
sx, 0, 0, 0,
|
|
0, sy, 0, 0,
|
|
0, 0, 1, 0,
|
|
tx, ty, 0, 1,
|
|
};
|
|
|
|
float mtxBeforeFlipV[16];
|
|
mtxMul(mtxBeforeFlipV, crop, xform);
|
|
|
|
// SurfaceFlinger expects the top of its window textures to be at a Y
|
|
// coordinate of 0, so SurfaceTexture must behave the same way. We don't
|
|
// want to expose this to applications, however, so we must add an
|
|
// additional vertical flip to the transform after all the other transforms.
|
|
mtxMul(mCurrentTransformMatrix, mtxFlipV, mtxBeforeFlipV);
|
|
}
|
|
|
|
nsecs_t SurfaceTexture::getTimestamp() {
|
|
ST_LOGV("getTimestamp");
|
|
Mutex::Autolock lock(mMutex);
|
|
return mCurrentTimestamp;
|
|
}
|
|
|
|
void SurfaceTexture::setFrameAvailableListener(
|
|
const sp<FrameAvailableListener>& listener) {
|
|
ST_LOGV("setFrameAvailableListener");
|
|
Mutex::Autolock lock(mMutex);
|
|
mFrameAvailableListener = listener;
|
|
}
|
|
|
|
void SurfaceTexture::freeBufferLocked(int i) {
|
|
mSlots[i].mGraphicBuffer = 0;
|
|
mSlots[i].mBufferState = BufferSlot::FREE;
|
|
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;
|
|
}
|
|
}
|
|
|
|
void SurfaceTexture::freeAllBuffersLocked() {
|
|
LOGW_IF(!mQueue.isEmpty(),
|
|
"freeAllBuffersLocked called but mQueue is not empty");
|
|
mCurrentTexture = INVALID_BUFFER_SLOT;
|
|
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
|
|
freeBufferLocked(i);
|
|
}
|
|
}
|
|
|
|
void SurfaceTexture::freeAllBuffersExceptHeadLocked() {
|
|
LOGW_IF(!mQueue.isEmpty(),
|
|
"freeAllBuffersExceptCurrentLocked called but mQueue is not empty");
|
|
int head = -1;
|
|
if (!mQueue.empty()) {
|
|
Fifo::iterator front(mQueue.begin());
|
|
head = *front;
|
|
}
|
|
mCurrentTexture = INVALID_BUFFER_SLOT;
|
|
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
|
|
if (i != head) {
|
|
freeBufferLocked(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
status_t SurfaceTexture::drainQueueLocked() {
|
|
while (mSynchronousMode && !mQueue.isEmpty()) {
|
|
mDequeueCondition.wait(mMutex);
|
|
if (mAbandoned) {
|
|
ST_LOGE("drainQueueLocked: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
if (mConnectedApi == NO_CONNECTED_API) {
|
|
ST_LOGE("drainQueueLocked: SurfaceTexture is not connected!");
|
|
return NO_INIT;
|
|
}
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t SurfaceTexture::drainQueueAndFreeBuffersLocked() {
|
|
status_t err = drainQueueLocked();
|
|
if (err == NO_ERROR) {
|
|
if (mSynchronousMode) {
|
|
freeAllBuffersLocked();
|
|
} else {
|
|
freeAllBuffersExceptHeadLocked();
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
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);
|
|
if (image == EGL_NO_IMAGE_KHR) {
|
|
EGLint error = eglGetError();
|
|
ST_LOGE("error creating EGLImage: %#x", error);
|
|
}
|
|
return image;
|
|
}
|
|
|
|
sp<GraphicBuffer> SurfaceTexture::getCurrentBuffer() const {
|
|
Mutex::Autolock lock(mMutex);
|
|
return mCurrentTextureBuf;
|
|
}
|
|
|
|
Rect SurfaceTexture::getCurrentCrop() const {
|
|
Mutex::Autolock lock(mMutex);
|
|
return mCurrentCrop;
|
|
}
|
|
|
|
uint32_t SurfaceTexture::getCurrentTransform() const {
|
|
Mutex::Autolock lock(mMutex);
|
|
return mCurrentTransform;
|
|
}
|
|
|
|
uint32_t SurfaceTexture::getCurrentScalingMode() const {
|
|
Mutex::Autolock lock(mMutex);
|
|
return mCurrentScalingMode;
|
|
}
|
|
|
|
int SurfaceTexture::query(int what, int* outValue)
|
|
{
|
|
Mutex::Autolock lock(mMutex);
|
|
|
|
if (mAbandoned) {
|
|
ST_LOGE("query: SurfaceTexture has been abandoned!");
|
|
return NO_INIT;
|
|
}
|
|
|
|
int value;
|
|
switch (what) {
|
|
case NATIVE_WINDOW_WIDTH:
|
|
value = mDefaultWidth;
|
|
break;
|
|
case NATIVE_WINDOW_HEIGHT:
|
|
value = mDefaultHeight;
|
|
break;
|
|
case NATIVE_WINDOW_FORMAT:
|
|
value = mPixelFormat;
|
|
break;
|
|
case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
|
|
value = mSynchronousMode ?
|
|
(MIN_UNDEQUEUED_BUFFERS-1) : MIN_UNDEQUEUED_BUFFERS;
|
|
break;
|
|
default:
|
|
return BAD_VALUE;
|
|
}
|
|
outValue[0] = value;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
void SurfaceTexture::abandon() {
|
|
Mutex::Autolock lock(mMutex);
|
|
mQueue.clear();
|
|
mAbandoned = true;
|
|
mCurrentTextureBuf.clear();
|
|
freeAllBuffersLocked();
|
|
mDequeueCondition.signal();
|
|
}
|
|
|
|
void SurfaceTexture::setName(const String8& name) {
|
|
mName = name;
|
|
}
|
|
|
|
void SurfaceTexture::dump(String8& result) const
|
|
{
|
|
char buffer[1024];
|
|
dump(result, "", buffer, 1024);
|
|
}
|
|
|
|
void SurfaceTexture::dump(String8& result, const char* prefix,
|
|
char* buffer, size_t SIZE) const
|
|
{
|
|
Mutex::Autolock _l(mMutex);
|
|
snprintf(buffer, SIZE,
|
|
"%smBufferCount=%d, mSynchronousMode=%d, default-size=[%dx%d], "
|
|
"mPixelFormat=%d, mTexName=%d\n",
|
|
prefix, mBufferCount, mSynchronousMode, mDefaultWidth,
|
|
mDefaultHeight, mPixelFormat, mTexName);
|
|
result.append(buffer);
|
|
|
|
String8 fifo;
|
|
int fifoSize = 0;
|
|
Fifo::const_iterator i(mQueue.begin());
|
|
while (i != mQueue.end()) {
|
|
snprintf(buffer, SIZE, "%02d ", *i++);
|
|
fifoSize++;
|
|
fifo.append(buffer);
|
|
}
|
|
|
|
snprintf(buffer, SIZE,
|
|
"%scurrent: {crop=[%d,%d,%d,%d], transform=0x%02x, current=%d}\n"
|
|
"%snext : {crop=[%d,%d,%d,%d], transform=0x%02x, FIFO(%d)={%s}}\n"
|
|
,
|
|
prefix, mCurrentCrop.left,
|
|
mCurrentCrop.top, mCurrentCrop.right, mCurrentCrop.bottom,
|
|
mCurrentTransform, mCurrentTexture,
|
|
prefix, mNextCrop.left, mNextCrop.top, mNextCrop.right,
|
|
mNextCrop.bottom, mNextTransform, fifoSize, fifo.string()
|
|
);
|
|
result.append(buffer);
|
|
|
|
struct {
|
|
const char * operator()(int state) const {
|
|
switch (state) {
|
|
case BufferSlot::DEQUEUED: return "DEQUEUED";
|
|
case BufferSlot::QUEUED: return "QUEUED";
|
|
case BufferSlot::FREE: return "FREE";
|
|
default: return "Unknown";
|
|
}
|
|
}
|
|
} stateName;
|
|
|
|
for (int i=0 ; i<mBufferCount ; i++) {
|
|
const BufferSlot& slot(mSlots[i]);
|
|
snprintf(buffer, SIZE,
|
|
"%s%s[%02d] "
|
|
"state=%-8s, crop=[%d,%d,%d,%d], "
|
|
"transform=0x%02x, timestamp=%lld",
|
|
prefix, (i==mCurrentTexture)?">":" ", i,
|
|
stateName(slot.mBufferState),
|
|
slot.mCrop.left, slot.mCrop.top, slot.mCrop.right,
|
|
slot.mCrop.bottom, slot.mTransform, slot.mTimestamp
|
|
);
|
|
result.append(buffer);
|
|
|
|
const sp<GraphicBuffer>& buf(slot.mGraphicBuffer);
|
|
if (buf != NULL) {
|
|
snprintf(buffer, SIZE,
|
|
", %p [%4ux%4u:%4u,%3X]",
|
|
buf->handle, buf->width, buf->height, buf->stride,
|
|
buf->format);
|
|
result.append(buffer);
|
|
}
|
|
result.append("\n");
|
|
}
|
|
}
|
|
|
|
static void mtxMul(float out[16], const float a[16], const float b[16]) {
|
|
out[0] = a[0]*b[0] + a[4]*b[1] + a[8]*b[2] + a[12]*b[3];
|
|
out[1] = a[1]*b[0] + a[5]*b[1] + a[9]*b[2] + a[13]*b[3];
|
|
out[2] = a[2]*b[0] + a[6]*b[1] + a[10]*b[2] + a[14]*b[3];
|
|
out[3] = a[3]*b[0] + a[7]*b[1] + a[11]*b[2] + a[15]*b[3];
|
|
|
|
out[4] = a[0]*b[4] + a[4]*b[5] + a[8]*b[6] + a[12]*b[7];
|
|
out[5] = a[1]*b[4] + a[5]*b[5] + a[9]*b[6] + a[13]*b[7];
|
|
out[6] = a[2]*b[4] + a[6]*b[5] + a[10]*b[6] + a[14]*b[7];
|
|
out[7] = a[3]*b[4] + a[7]*b[5] + a[11]*b[6] + a[15]*b[7];
|
|
|
|
out[8] = a[0]*b[8] + a[4]*b[9] + a[8]*b[10] + a[12]*b[11];
|
|
out[9] = a[1]*b[8] + a[5]*b[9] + a[9]*b[10] + a[13]*b[11];
|
|
out[10] = a[2]*b[8] + a[6]*b[9] + a[10]*b[10] + a[14]*b[11];
|
|
out[11] = a[3]*b[8] + a[7]*b[9] + a[11]*b[10] + a[15]*b[11];
|
|
|
|
out[12] = a[0]*b[12] + a[4]*b[13] + a[8]*b[14] + a[12]*b[15];
|
|
out[13] = a[1]*b[12] + a[5]*b[13] + a[9]*b[14] + a[13]*b[15];
|
|
out[14] = a[2]*b[12] + a[6]*b[13] + a[10]*b[14] + a[14]*b[15];
|
|
out[15] = a[3]*b[12] + a[7]*b[13] + a[11]*b[14] + a[15]*b[15];
|
|
}
|
|
|
|
}; // namespace android
|