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/*
* Copyright (C) 2007 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 "ISurface"
#include <stdio.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <binder/IMemory.h>
#include <ui/Overlay.h>
#include <ui/GraphicBuffer.h>
#include <surfaceflinger/Surface.h>
#include <surfaceflinger/ISurface.h>
namespace android {
// ----------------------------------------------------------------------
ISurface::BufferHeap::BufferHeap()
: w(0), h(0), hor_stride(0), ver_stride(0), format(0),
transform(0), flags(0)
{
}
ISurface::BufferHeap::BufferHeap(uint32_t w, uint32_t h,
int32_t hor_stride, int32_t ver_stride,
PixelFormat format, const sp<IMemoryHeap>& heap)
: w(w), h(h), hor_stride(hor_stride), ver_stride(ver_stride),
format(format), transform(0), flags(0), heap(heap)
{
}
ISurface::BufferHeap::BufferHeap(uint32_t w, uint32_t h,
int32_t hor_stride, int32_t ver_stride,
PixelFormat format, uint32_t transform, uint32_t flags,
const sp<IMemoryHeap>& heap)
: w(w), h(h), hor_stride(hor_stride), ver_stride(ver_stride),
format(format), transform(transform), flags(flags), heap(heap)
{
}
ISurface::BufferHeap::~BufferHeap()
{
}
// ----------------------------------------------------------------------
class BpSurface : public BpInterface<ISurface>
{
public:
BpSurface(const sp<IBinder>& impl)
: BpInterface<ISurface>(impl)
{
}
virtual sp<GraphicBuffer> requestBuffer(int bufferIdx, int usage)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(bufferIdx);
data.writeInt32(usage);
remote()->transact(REQUEST_BUFFER, data, &reply);
sp<GraphicBuffer> buffer = new GraphicBuffer();
reply.read(*buffer);
return buffer;
}
virtual status_t registerBuffers(const BufferHeap& buffers)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(buffers.w);
data.writeInt32(buffers.h);
data.writeInt32(buffers.hor_stride);
data.writeInt32(buffers.ver_stride);
data.writeInt32(buffers.format);
data.writeInt32(buffers.transform);
data.writeInt32(buffers.flags);
data.writeStrongBinder(buffers.heap->asBinder());
remote()->transact(REGISTER_BUFFERS, data, &reply);
status_t result = reply.readInt32();
return result;
}
virtual void postBuffer(ssize_t offset)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(offset);
remote()->transact(POST_BUFFER, data, &reply, IBinder::FLAG_ONEWAY);
}
virtual void unregisterBuffers()
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
remote()->transact(UNREGISTER_BUFFERS, data, &reply);
}
virtual sp<OverlayRef> createOverlay(
uint32_t w, uint32_t h, int32_t format, int32_t orientation)
{
Parcel data, reply;
data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
data.writeInt32(w);
data.writeInt32(h);
data.writeInt32(format);
data.writeInt32(orientation);
remote()->transact(CREATE_OVERLAY, data, &reply);
return OverlayRef::readFromParcel(reply);
}
};
IMPLEMENT_META_INTERFACE(Surface, "android.ui.ISurface");
// ----------------------------------------------------------------------
status_t BnSurface::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case REQUEST_BUFFER: {
CHECK_INTERFACE(ISurface, data, reply);
int bufferIdx = data.readInt32();
int usage = data.readInt32();
sp<GraphicBuffer> buffer(requestBuffer(bufferIdx, usage));
if (buffer == NULL)
return BAD_VALUE;
return reply->write(*buffer);
}
case REGISTER_BUFFERS: {
CHECK_INTERFACE(ISurface, data, reply);
BufferHeap buffer;
buffer.w = data.readInt32();
buffer.h = data.readInt32();
buffer.hor_stride = data.readInt32();
buffer.ver_stride= data.readInt32();
buffer.format = data.readInt32();
buffer.transform = data.readInt32();
buffer.flags = data.readInt32();
buffer.heap = interface_cast<IMemoryHeap>(data.readStrongBinder());
status_t err = registerBuffers(buffer);
reply->writeInt32(err);
return NO_ERROR;
} break;
case UNREGISTER_BUFFERS: {
CHECK_INTERFACE(ISurface, data, reply);
unregisterBuffers();
return NO_ERROR;
} break;
case POST_BUFFER: {
CHECK_INTERFACE(ISurface, data, reply);
ssize_t offset = data.readInt32();
postBuffer(offset);
return NO_ERROR;
} break;
case CREATE_OVERLAY: {
CHECK_INTERFACE(ISurface, data, reply);
int w = data.readInt32();
int h = data.readInt32();
int f = data.readInt32();
int orientation = data.readInt32();
sp<OverlayRef> o = createOverlay(w, h, f, orientation);
return OverlayRef::writeToParcel(reply, o);
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
}; // namespace android
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