9f3053de78
Adds detachBuffer and attachBuffer calls to both the producer and consumer sides of BufferQueue. Buffers may be detached while dequeued by the producer or acquired by the consumer, and when attached, enter the dequeued and acquired states, respectively. Bug: 13173343 Change-Id: Ic152692b0a94d99e0135b9bfa62747dab2a54220
376 lines
13 KiB
C++
376 lines
13 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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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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#include <utils/Vector.h>
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#include <utils/Timers.h>
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#include <binder/Parcel.h>
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#include <binder/IInterface.h>
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#include <gui/IGraphicBufferProducer.h>
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namespace android {
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// ----------------------------------------------------------------------------
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enum {
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REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION,
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SET_BUFFER_COUNT,
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DEQUEUE_BUFFER,
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DETACH_BUFFER,
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ATTACH_BUFFER,
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QUEUE_BUFFER,
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CANCEL_BUFFER,
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QUERY,
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CONNECT,
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DISCONNECT,
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};
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class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer>
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{
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public:
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BpGraphicBufferProducer(const sp<IBinder>& impl)
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: BpInterface<IGraphicBufferProducer>(impl)
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{
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}
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virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(bufferIdx);
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status_t result =remote()->transact(REQUEST_BUFFER, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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bool nonNull = reply.readInt32();
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if (nonNull) {
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*buf = new GraphicBuffer();
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result = reply.read(**buf);
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if(result != NO_ERROR) {
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(*buf).clear();
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return result;
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}
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}
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result = reply.readInt32();
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return result;
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}
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virtual status_t setBufferCount(int bufferCount)
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{
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(bufferCount);
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status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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result = reply.readInt32();
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return result;
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}
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virtual status_t dequeueBuffer(int *buf, sp<Fence>* fence, bool async,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(async);
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data.writeInt32(w);
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data.writeInt32(h);
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data.writeInt32(format);
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data.writeInt32(usage);
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status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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*buf = reply.readInt32();
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bool nonNull = reply.readInt32();
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if (nonNull) {
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*fence = new Fence();
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reply.read(**fence);
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}
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result = reply.readInt32();
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return result;
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}
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virtual status_t detachBuffer(int slot) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(slot);
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status_t result = remote()->transact(DETACH_BUFFER, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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result = reply.readInt32();
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return result;
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}
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virtual status_t attachBuffer(int* slot, const sp<GraphicBuffer>& buffer) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.write(*buffer.get());
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status_t result = remote()->transact(ATTACH_BUFFER, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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*slot = reply.readInt32();
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result = reply.readInt32();
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return result;
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}
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virtual status_t queueBuffer(int buf,
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const QueueBufferInput& input, QueueBufferOutput* output) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(buf);
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data.write(input);
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status_t result = remote()->transact(QUEUE_BUFFER, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output));
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result = reply.readInt32();
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return result;
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}
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virtual void cancelBuffer(int buf, const sp<Fence>& fence) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(buf);
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data.write(*fence.get());
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remote()->transact(CANCEL_BUFFER, data, &reply);
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}
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virtual int query(int what, int* value) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(what);
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status_t result = remote()->transact(QUERY, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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value[0] = reply.readInt32();
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result = reply.readInt32();
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return result;
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}
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virtual status_t connect(const sp<IBinder>& token,
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int api, bool producerControlledByApp, QueueBufferOutput* output) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeStrongBinder(token);
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data.writeInt32(api);
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data.writeInt32(producerControlledByApp);
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status_t result = remote()->transact(CONNECT, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output));
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result = reply.readInt32();
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return result;
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}
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virtual status_t disconnect(int api) {
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Parcel data, reply;
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data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
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data.writeInt32(api);
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status_t result =remote()->transact(DISCONNECT, data, &reply);
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if (result != NO_ERROR) {
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return result;
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}
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result = reply.readInt32();
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return result;
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}
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};
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IMPLEMENT_META_INTERFACE(GraphicBufferProducer, "android.gui.IGraphicBufferProducer");
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// ----------------------------------------------------------------------
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status_t BnGraphicBufferProducer::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch(code) {
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case REQUEST_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int bufferIdx = data.readInt32();
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sp<GraphicBuffer> buffer;
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int result = requestBuffer(bufferIdx, &buffer);
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reply->writeInt32(buffer != 0);
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if (buffer != 0) {
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reply->write(*buffer);
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}
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case SET_BUFFER_COUNT: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int bufferCount = data.readInt32();
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int result = setBufferCount(bufferCount);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case DEQUEUE_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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bool async = data.readInt32();
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uint32_t w = data.readInt32();
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uint32_t h = data.readInt32();
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uint32_t format = data.readInt32();
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uint32_t usage = data.readInt32();
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int buf;
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sp<Fence> fence;
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int result = dequeueBuffer(&buf, &fence, async, w, h, format, usage);
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reply->writeInt32(buf);
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reply->writeInt32(fence != NULL);
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if (fence != NULL) {
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reply->write(*fence);
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}
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case DETACH_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int slot = data.readInt32();
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int result = detachBuffer(slot);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case ATTACH_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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sp<GraphicBuffer> buffer = new GraphicBuffer();
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data.read(*buffer.get());
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int slot;
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int result = attachBuffer(&slot, buffer);
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reply->writeInt32(slot);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case QUEUE_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int buf = data.readInt32();
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QueueBufferInput input(data);
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QueueBufferOutput* const output =
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reinterpret_cast<QueueBufferOutput *>(
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reply->writeInplace(sizeof(QueueBufferOutput)));
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status_t result = queueBuffer(buf, input, output);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case CANCEL_BUFFER: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int buf = data.readInt32();
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sp<Fence> fence = new Fence();
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data.read(*fence.get());
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cancelBuffer(buf, fence);
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return NO_ERROR;
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} break;
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case QUERY: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int value;
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int what = data.readInt32();
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int res = query(what, &value);
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reply->writeInt32(value);
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reply->writeInt32(res);
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return NO_ERROR;
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} break;
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case CONNECT: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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sp<IBinder> token = data.readStrongBinder();
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int api = data.readInt32();
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bool producerControlledByApp = data.readInt32();
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QueueBufferOutput* const output =
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reinterpret_cast<QueueBufferOutput *>(
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reply->writeInplace(sizeof(QueueBufferOutput)));
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status_t res = connect(token, api, producerControlledByApp, output);
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reply->writeInt32(res);
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return NO_ERROR;
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} break;
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case DISCONNECT: {
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CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
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int api = data.readInt32();
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status_t res = disconnect(api);
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reply->writeInt32(res);
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return NO_ERROR;
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} break;
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}
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return BBinder::onTransact(code, data, reply, flags);
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}
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// ----------------------------------------------------------------------------
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IGraphicBufferProducer::QueueBufferInput::QueueBufferInput(const Parcel& parcel) {
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parcel.read(*this);
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}
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size_t IGraphicBufferProducer::QueueBufferInput::getFlattenedSize() const {
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return sizeof(timestamp)
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+ sizeof(isAutoTimestamp)
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+ sizeof(crop)
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+ sizeof(scalingMode)
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+ sizeof(transform)
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+ sizeof(async)
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+ fence->getFlattenedSize();
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}
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size_t IGraphicBufferProducer::QueueBufferInput::getFdCount() const {
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return fence->getFdCount();
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}
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status_t IGraphicBufferProducer::QueueBufferInput::flatten(
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void*& buffer, size_t& size, int*& fds, size_t& count) const
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{
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if (size < getFlattenedSize()) {
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return NO_MEMORY;
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}
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FlattenableUtils::write(buffer, size, timestamp);
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FlattenableUtils::write(buffer, size, isAutoTimestamp);
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FlattenableUtils::write(buffer, size, crop);
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FlattenableUtils::write(buffer, size, scalingMode);
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FlattenableUtils::write(buffer, size, transform);
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FlattenableUtils::write(buffer, size, async);
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return fence->flatten(buffer, size, fds, count);
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}
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status_t IGraphicBufferProducer::QueueBufferInput::unflatten(
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void const*& buffer, size_t& size, int const*& fds, size_t& count)
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{
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size_t minNeeded =
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sizeof(timestamp)
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+ sizeof(isAutoTimestamp)
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+ sizeof(crop)
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+ sizeof(scalingMode)
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+ sizeof(transform)
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+ sizeof(async);
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if (size < minNeeded) {
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return NO_MEMORY;
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}
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FlattenableUtils::read(buffer, size, timestamp);
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FlattenableUtils::read(buffer, size, isAutoTimestamp);
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FlattenableUtils::read(buffer, size, crop);
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FlattenableUtils::read(buffer, size, scalingMode);
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FlattenableUtils::read(buffer, size, transform);
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FlattenableUtils::read(buffer, size, async);
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fence = new Fence();
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return fence->unflatten(buffer, size, fds, count);
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}
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}; // namespace android
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