1/*
2 * Copyright (C) 2015 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_GL_WORKER_H_
18#define ANDROID_GL_WORKER_H_
19
20#include <vector>
21
22#define EGL_EGLEXT_PROTOTYPES
23#define GL_GLEXT_PROTOTYPES
24
25#include <EGL/egl.h>
26#include <EGL/eglext.h>
27#include <GLES2/gl2.h>
28#include <GLES2/gl2ext.h>
29
30#include <ui/GraphicBuffer.h>
31
32#include "autogl.h"
33
34namespace android {
35
36struct DrmHwcLayer;
37struct DrmCompositionRegion;
38
39class GLWorkerCompositor {
40 public:
41  GLWorkerCompositor();
42  ~GLWorkerCompositor();
43
44  int Init();
45  int Composite(DrmHwcLayer *layers, DrmCompositionRegion *regions,
46                size_t num_regions, const sp<GraphicBuffer> &framebuffer);
47  void Finish();
48
49 private:
50  struct CachedFramebuffer {
51    // If the strong_framebuffer is non-NULL, we are holding a strong reference
52    // until we are sure rendering is done. The weak reference will be equal in
53    // that case.
54    sp<GraphicBuffer> strong_framebuffer;
55    wp<GraphicBuffer> weak_framebuffer;
56    AutoEGLDisplayImage egl_fb_image;
57    AutoGLTexture gl_fb_tex;
58    AutoGLFramebuffer gl_fb;
59
60    CachedFramebuffer(const sp<GraphicBuffer> &gb, AutoEGLDisplayImage &&image,
61                      AutoGLTexture &&tex, AutoGLFramebuffer &&fb);
62
63    bool Promote();
64  };
65
66  CachedFramebuffer *FindCachedFramebuffer(
67      const sp<GraphicBuffer> &framebuffer);
68  CachedFramebuffer *PrepareAndCacheFramebuffer(
69      const sp<GraphicBuffer> &framebuffer);
70
71  GLint PrepareAndCacheProgram(unsigned texture_count);
72
73  EGLDisplay egl_display_;
74  EGLContext egl_ctx_;
75
76  std::vector<AutoGLProgram> blend_programs_;
77  AutoGLBuffer vertex_buffer_;
78
79  std::vector<CachedFramebuffer> cached_framebuffers_;
80};
81}
82
83#endif
84