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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_ |
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80 EGLContext egl_context, | 80 EGLContext egl_context, |
81 const base::WeakPtr<Client>& io_client_, | 81 const base::WeakPtr<Client>& io_client_, |
82 const base::Callback<bool(void)>& make_context_current, | 82 const base::Callback<bool(void)>& make_context_current, |
83 scoped_ptr<V4L2Device> device, | 83 scoped_ptr<V4L2Device> device, |
84 const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy); | 84 const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy); |
85 virtual ~V4L2VideoDecodeAccelerator(); | 85 virtual ~V4L2VideoDecodeAccelerator(); |
86 | 86 |
87 // media::VideoDecodeAccelerator implementation. | 87 // media::VideoDecodeAccelerator implementation. |
88 // Note: Initialize() and Destroy() are synchronous. | 88 // Note: Initialize() and Destroy() are synchronous. |
89 virtual bool Initialize(media::VideoCodecProfile profile, | 89 virtual bool Initialize(media::VideoCodecProfile profile, |
90 Client* client) OVERRIDE; | 90 Client* client) override; |
91 virtual void Decode(const media::BitstreamBuffer& bitstream_buffer) OVERRIDE; | 91 virtual void Decode(const media::BitstreamBuffer& bitstream_buffer) override; |
92 virtual void AssignPictureBuffers( | 92 virtual void AssignPictureBuffers( |
93 const std::vector<media::PictureBuffer>& buffers) OVERRIDE; | 93 const std::vector<media::PictureBuffer>& buffers) override; |
94 virtual void ReusePictureBuffer(int32 picture_buffer_id) OVERRIDE; | 94 virtual void ReusePictureBuffer(int32 picture_buffer_id) override; |
95 virtual void Flush() OVERRIDE; | 95 virtual void Flush() override; |
96 virtual void Reset() OVERRIDE; | 96 virtual void Reset() override; |
97 virtual void Destroy() OVERRIDE; | 97 virtual void Destroy() override; |
98 virtual bool CanDecodeOnIOThread() OVERRIDE; | 98 virtual bool CanDecodeOnIOThread() override; |
99 | 99 |
100 private: | 100 private: |
101 // These are rather subjectively tuned. | 101 // These are rather subjectively tuned. |
102 enum { | 102 enum { |
103 kInputBufferCount = 8, | 103 kInputBufferCount = 8, |
104 // TODO(posciak): determine input buffer size based on level limits. | 104 // TODO(posciak): determine input buffer size based on level limits. |
105 // See http://crbug.com/255116. | 105 // See http://crbug.com/255116. |
106 // Input bitstream buffer size for up to 1080p streams. | 106 // Input bitstream buffer size for up to 1080p streams. |
107 kInputBufferMaxSizeFor1080p = 1024 * 1024, | 107 kInputBufferMaxSizeFor1080p = 1024 * 1024, |
108 // Input bitstream buffer size for up to 4k streams. | 108 // Input bitstream buffer size for up to 4k streams. |
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437 | 437 |
438 // The WeakPtrFactory for |weak_this_|. | 438 // The WeakPtrFactory for |weak_this_|. |
439 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_; | 439 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_; |
440 | 440 |
441 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator); | 441 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator); |
442 }; | 442 }; |
443 | 443 |
444 } // namespace content | 444 } // namespace content |
445 | 445 |
446 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ | 446 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ |
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