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Side by Side Diff: content/common/gpu/media/v4l2_video_decode_accelerator.h

Issue 269673005: media: Add MediaOzonePlatform support (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix up dependency cycle Created 6 years, 7 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 // 4 //
5 // This file contains an implementation of VideoDecodeAccelerator 5 // This file contains an implementation of VideoDecodeAccelerator
6 // that utilizes hardware video decoders, which expose Video4Linux 2 API 6 // that utilizes hardware video decoders, which expose Video4Linux 2 API
7 // (http://linuxtv.org/downloads/v4l-dvb-apis/). 7 // (http://linuxtv.org/downloads/v4l-dvb-apis/).
8 8
9 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ 9 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_
10 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ 10 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_
11 11
12 #include <queue> 12 #include <queue>
13 #include <vector> 13 #include <vector>
14 14
15 #include "base/callback_forward.h" 15 #include "base/callback_forward.h"
16 #include "base/memory/linked_ptr.h" 16 #include "base/memory/linked_ptr.h"
17 #include "base/memory/scoped_ptr.h" 17 #include "base/memory/scoped_ptr.h"
18 #include "base/synchronization/waitable_event.h" 18 #include "base/synchronization/waitable_event.h"
19 #include "base/threading/thread.h" 19 #include "base/threading/thread.h"
20 #include "content/common/content_export.h" 20 #include "content/common/content_export.h"
21 #include "content/common/gpu/media/v4l2_video_device.h" 21 #include "content/common/gpu/media/v4l2_video_device.h"
22 #include "content/common/gpu/media/video_decode_accelerator_impl.h"
23 #include "media/base/limits.h" 22 #include "media/base/limits.h"
24 #include "media/base/video_decoder_config.h" 23 #include "media/base/video_decoder_config.h"
24 #include "media/types/video_decode_accelerator_impl.h"
25 #include "media/video/picture.h" 25 #include "media/video/picture.h"
26 #include "ui/gfx/size.h" 26 #include "ui/gfx/size.h"
27 #include "ui/gl/gl_bindings.h" 27 #include "ui/gl/gl_bindings.h"
28 28
29 namespace base { 29 namespace base {
30 class MessageLoopProxy; 30 class MessageLoopProxy;
31 } // namespace base 31 } // namespace base
32 32
33 namespace media { 33 namespace media {
34 class H264Parser; 34 class H264Parser;
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66 // Buffer creation is a two-step process that is serviced partially on the 66 // Buffer creation is a two-step process that is serviced partially on the
67 // Child thread, because we need to wait for the client to provide textures 67 // Child thread, because we need to wait for the client to provide textures
68 // for the buffers we allocate. We cannot keep the decoder thread running while 68 // for the buffers we allocate. We cannot keep the decoder thread running while
69 // the client allocates Pictures for us, because we need to REQBUFS first to get 69 // the client allocates Pictures for us, because we need to REQBUFS first to get
70 // the required number of output buffers from the device and that cannot be done 70 // the required number of output buffers from the device and that cannot be done
71 // unless we free the previous set of buffers, leaving the decoding in a 71 // unless we free the previous set of buffers, leaving the decoding in a
72 // inoperable state for the duration of the wait for Pictures. So to prevent 72 // inoperable state for the duration of the wait for Pictures. So to prevent
73 // subtle races (esp. if we get Reset() in the meantime), we block the decoder 73 // subtle races (esp. if we get Reset() in the meantime), we block the decoder
74 // thread while we wait for AssignPictureBuffers from the client. 74 // thread while we wait for AssignPictureBuffers from the client.
75 class CONTENT_EXPORT V4L2VideoDecodeAccelerator 75 class CONTENT_EXPORT V4L2VideoDecodeAccelerator
76 : public VideoDecodeAcceleratorImpl { 76 : public media::VideoDecodeAcceleratorImpl {
77 public: 77 public:
78 V4L2VideoDecodeAccelerator( 78 V4L2VideoDecodeAccelerator(
79 EGLDisplay egl_display, 79 EGLDisplay egl_display,
80 const base::WeakPtr<Client>& io_client_, 80 const base::WeakPtr<Client>& io_client_,
81 const base::Callback<bool(void)>& make_context_current, 81 const base::Callback<bool(void)>& make_context_current,
82 scoped_ptr<V4L2Device> device, 82 scoped_ptr<V4L2Device> device,
83 const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy); 83 const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy);
84 virtual ~V4L2VideoDecodeAccelerator(); 84 virtual ~V4L2VideoDecodeAccelerator();
85 85
86 // media::VideoDecodeAccelerator implementation. 86 // media::VideoDecodeAccelerator implementation.
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436 436
437 // The WeakPtrFactory for |weak_this_|. 437 // The WeakPtrFactory for |weak_this_|.
438 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_; 438 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_;
439 439
440 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator); 440 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator);
441 }; 441 };
442 442
443 } // namespace content 443 } // namespace content
444 444
445 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ 445 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_
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