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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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| 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 // Get the minimum and maximum supported decode resolution. |
| 101 static media::VideoDecodeAccelerator::SupportedResolution |
| 102 GetSupportedResolution(); |
| 103 |
| 100 private: | 104 private: |
| 101 // These are rather subjectively tuned. | 105 // These are rather subjectively tuned. |
| 102 enum { | 106 enum { |
| 103 kInputBufferCount = 8, | 107 kInputBufferCount = 8, |
| 104 // TODO(posciak): determine input buffer size based on level limits. | 108 // TODO(posciak): determine input buffer size based on level limits. |
| 105 // See http://crbug.com/255116. | 109 // See http://crbug.com/255116. |
| 106 // Input bitstream buffer size for up to 1080p streams. | 110 // Input bitstream buffer size for up to 1080p streams. |
| 107 kInputBufferMaxSizeFor1080p = 1024 * 1024, | 111 kInputBufferMaxSizeFor1080p = 1024 * 1024, |
| 108 // Input bitstream buffer size for up to 4k streams. | 112 // Input bitstream buffer size for up to 4k streams. |
| 109 kInputBufferMaxSizeFor4k = 4 * kInputBufferMaxSizeFor1080p, | 113 kInputBufferMaxSizeFor4k = 4 * kInputBufferMaxSizeFor1080p, |
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| 443 | 447 |
| 444 // The WeakPtrFactory for |weak_this_|. | 448 // The WeakPtrFactory for |weak_this_|. |
| 445 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_; | 449 base::WeakPtrFactory<V4L2VideoDecodeAccelerator> weak_this_factory_; |
| 446 | 450 |
| 447 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator); | 451 DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator); |
| 448 }; | 452 }; |
| 449 | 453 |
| 450 } // namespace content | 454 } // namespace content |
| 451 | 455 |
| 452 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ | 456 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_ |
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