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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_ | |
| 6 #define CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_ | |
| 7 | |
| 8 #include "base/synchronization/waitable_event.h" | |
| 9 #include "gpu/command_buffer/service/gles2_cmd_decoder.h" | |
| 10 #include "media/base/android/media_codec_bridge.h" | |
| 11 #include "media/base/android/sdk_media_codec_bridge.h" | |
| 12 #include "ui/gl/gl_context.h" | |
| 13 #include "ui/gl/gl_image.h" | |
| 14 #include "ui/gl/gl_surface.h" | |
| 15 | |
| 16 namespace gfx { | |
| 17 class SurfaceTexture; | |
| 18 } | |
| 19 | |
| 20 namespace media { | |
| 21 class MediaCodecBridge; | |
| 22 } | |
| 23 | |
| 24 namespace content { | |
| 25 class AVDACodecImage; | |
| 26 | |
| 27 // Shared state to allow communication between the AVDA and the | |
| 28 // GLImages that configure GL for drawing the frames. | |
| 29 class AVDASharedState : public base::RefCounted<AVDASharedState> { | |
| 30 public: | |
| 31 AVDASharedState(); | |
| 32 | |
| 33 GLint surface_texture_service_id() const { | |
| 34 return surface_texture_service_id_; | |
| 35 } | |
| 36 | |
| 37 // Set the SurfaceTexture's client texture name, which the SurfaceTexture | |
| 38 // might not know about yet (see surface_texture_is_attached()). | |
| 39 void set_surface_texture_service_id(GLint id) { | |
| 40 surface_texture_service_id_ = id; | |
| 41 } | |
| 42 | |
| 43 // Signal the "frame available" event. This may be called from any thread. | |
| 44 void SignalFrameAvailable(); | |
| 45 | |
| 46 void WaitForFrameAvailable(); | |
| 47 | |
| 48 // Context that the surface texture is bound to, or nullptr if it is not in | |
| 49 // the attached state. | |
| 50 gfx::GLContext* context() const { return context_.get(); } | |
| 51 | |
| 52 gfx::GLSurface* surface() const { return surface_.get(); } | |
| 53 | |
| 54 bool surface_texture_is_attached() const { | |
| 55 return surface_texture_is_attached_; | |
| 56 } | |
| 57 | |
| 58 // Iterates over all known codec images and updates the MediaCodec attached to | |
| 59 // each one. | |
| 60 void CodecChanged(media::MediaCodecBridge* codec); | |
| 61 | |
| 62 // Methods for finding and updating the AVDACodecImage associated with a given | |
| 63 // picture buffer id. GetImageForPicture() will return null for unknown ids. | |
| 64 // Calling SetImageForPicture() with a nullptr will erase the entry. | |
| 65 void SetImageForPicture(int picture_buffer_id, AVDACodecImage* image); | |
| 66 AVDACodecImage* GetImageForPicture(int picture_buffer_id) const; | |
| 67 | |
| 68 // TODO(liberato): move the surface texture here and make these calls | |
| 69 // attach / detach it also. There are several changes going on in avda | |
| 70 // concurrently, so I don't want to change that until the dust settles. | |
| 71 // AVDACodecImage would no longer hold the surface texture. | |
| 72 | |
| 73 // Call this when the SurfaceTexture is attached to a GL context. This will | |
| 74 // update surface_texture_is_attached(), and set the context() and surface() | |
| 75 // to match. | |
| 76 void DidAttachSurfaceTexture(); | |
| 77 | |
| 78 // Call this when the SurfaceTexture is detached from its GL context. This | |
| 79 // will cause us to forget the last binding. | |
| 80 void DidDetachSurfaceTexture(); | |
| 81 | |
| 82 protected: | |
| 83 virtual ~AVDASharedState(); | |
| 84 | |
| 85 private: | |
| 86 friend class base::RefCounted<AVDASharedState>; | |
| 87 | |
| 88 // Platform gl texture Id for |surface_texture_|. This will be zero if | |
| 89 // and only if |texture_owner_| is null. | |
| 90 // TODO(liberato): This should be GLuint, but we don't seem to have the type. | |
| 91 GLint surface_texture_service_id_; | |
| 92 | |
| 93 // For signalling OnFrameAvailable(). | |
| 94 base::WaitableEvent frame_available_event_; | |
| 95 | |
| 96 // True if and only if the surface texture is currently attached. | |
| 97 bool surface_texture_is_attached_; | |
| 98 | |
| 99 // Context and surface that the surface texture is attached to, if it is | |
| 100 // currently attached. | |
| 101 scoped_refptr<gfx::GLContext> context_; | |
| 102 scoped_refptr<gfx::GLSurface> surface_; | |
| 103 | |
| 104 // Maps a picture buffer id to a AVDACodecImage. | |
| 105 std::map<int, AVDACodecImage*> codec_images_; | |
| 106 | |
| 107 DISALLOW_COPY_AND_ASSIGN(AVDASharedState); | |
| 108 }; | |
| 109 | |
| 110 } // namespace content | |
| 111 | |
| 112 #endif // CONTENT_COMMON_GPU_AVDA_SHARED_STATE_H_ | |
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