SurfaceFlingerConsumer.h revision 3f84483382be2d528918cc1a6fbc6a7d68e0b181 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_SURFACEFLINGERCONSUMER_H
18#define ANDROID_SURFACEFLINGERCONSUMER_H
19
20#include <gui/GLConsumer.h>
21
22namespace android {
23// ----------------------------------------------------------------------------
24
25/*
26 * This is a thin wrapper around GLConsumer.
27 */
28class SurfaceFlingerConsumer : public GLConsumer {
29public:
30    SurfaceFlingerConsumer(const sp<BufferQueue>& bq, uint32_t tex)
31        : GLConsumer(bq, tex, GLConsumer::TEXTURE_EXTERNAL, false)
32    {}
33
34    class BufferRejecter {
35        friend class SurfaceFlingerConsumer;
36        virtual bool reject(const sp<GraphicBuffer>& buf,
37                const IGraphicBufferConsumer::BufferItem& item) = 0;
38
39    protected:
40        virtual ~BufferRejecter() { }
41    };
42
43    // This version of updateTexImage() takes a functor that may be used to
44    // reject the newly acquired buffer.  Unlike the GLConsumer version,
45    // this does not guarantee that the buffer has been bound to the GL
46    // texture.
47    status_t updateTexImage(BufferRejecter* rejecter);
48
49    // See GLConsumer::bindTextureImageLocked().
50    status_t bindTextureImage();
51
52private:
53    nsecs_t computeExpectedPresent();
54};
55
56// ----------------------------------------------------------------------------
57}; // namespace android
58
59#endif // ANDROID_SURFACEFLINGERCONSUMER_H
60