SurfaceFlingerConsumer.h revision bf974abe92f7495529916fe0f483f3b56e7c30e3 
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/SurfaceTexture.h>
21
22namespace android {
23// ----------------------------------------------------------------------------
24
25/*
26 * This is a thin wrapper around SurfaceTexture.
27 */
28class SurfaceFlingerConsumer : public SurfaceTexture {
29public:
30    SurfaceFlingerConsumer(GLuint tex, bool allowSynchronousMode = true,
31            GLenum texTarget = GL_TEXTURE_EXTERNAL_OES, bool useFenceSync = true,
32            const sp<BufferQueue> &bufferQueue = 0)
33        : SurfaceTexture(tex, allowSynchronousMode, texTarget, useFenceSync,
34            bufferQueue)
35    {}
36
37    class BufferRejecter {
38        friend class SurfaceFlingerConsumer;
39        virtual bool reject(const sp<GraphicBuffer>& buf,
40                const BufferQueue::BufferItem& item) = 0;
41
42    protected:
43        virtual ~BufferRejecter() { }
44    };
45
46    // This version of updateTexImage() takes a functor that may be used to
47    // reject the newly acquired buffer.  Unlike the SurfaceTexture version,
48    // this does not guarantee that the buffer has been bound to the GL
49    // texture.
50    status_t updateTexImage(BufferRejecter* rejecter);
51
52    // Pass-through to SurfaceTexture implementation.
53    status_t bindTextureImage() { return SurfaceTexture::bindTextureImage(); }
54};
55
56// ----------------------------------------------------------------------------
57}; // namespace android
58
59#endif // ANDROID_SURFACEFLINGERCONSUMER_H
60