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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 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ | 5 #ifndef MEDIA_GPU_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ |
6 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ | 6 #define MEDIA_GPU_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ |
7 | 7 |
8 #include <linux/videodev2.h> | 8 #include <linux/videodev2.h> |
9 #include <stddef.h> | 9 #include <stddef.h> |
10 #include <stdint.h> | 10 #include <stdint.h> |
11 #include <list> | 11 #include <list> |
12 #include <vector> | 12 #include <vector> |
13 | 13 |
14 #include "base/files/scoped_file.h" | 14 #include "base/files/scoped_file.h" |
15 #include "base/macros.h" | 15 #include "base/macros.h" |
16 #include "base/memory/linked_ptr.h" | 16 #include "base/memory/linked_ptr.h" |
17 #include "base/memory/weak_ptr.h" | 17 #include "base/memory/weak_ptr.h" |
18 #include "base/threading/thread.h" | 18 #include "base/threading/thread.h" |
19 #include "base/time/time.h" | 19 #include "base/time/time.h" |
20 #include "content/common/content_export.h" | 20 #include "media/gpu/media_gpu_export.h" |
21 #include "content/common/gpu/media/v4l2_device.h" | 21 #include "media/gpu/v4l2_device.h" |
22 #include "content/common/gpu/media/v4l2_image_processor.h" | 22 #include "media/gpu/v4l2_image_processor.h" |
23 #include "media/video/video_encode_accelerator.h" | 23 #include "media/video/video_encode_accelerator.h" |
24 #include "ui/gfx/geometry/size.h" | 24 #include "ui/gfx/geometry/size.h" |
25 | 25 |
26 namespace media { | 26 namespace media { |
27 | 27 |
28 class BitstreamBuffer; | 28 class BitstreamBuffer; |
29 | 29 |
30 } // namespace media | 30 } // namespace media |
31 | 31 |
32 namespace content { | 32 namespace media { |
33 | 33 |
34 // This class handles video encode acceleration by interfacing with a V4L2 | 34 // This class handles video encode acceleration by interfacing with a V4L2 |
35 // device exposed by the codec hardware driver. The threading model of this | 35 // device exposed by the codec hardware driver. The threading model of this |
36 // class is the same as in the V4L2VideoDecodeAccelerator (from which class this | 36 // class is the same as in the V4L2VideoDecodeAccelerator (from which class this |
37 // was designed). | 37 // was designed). |
38 // This class may try to instantiate and use a V4L2ImageProcessor for input | 38 // This class may try to instantiate and use a V4L2ImageProcessor for input |
39 // format conversion, if the input format requested via Initialize() is not | 39 // format conversion, if the input format requested via Initialize() is not |
40 // accepted by the hardware codec. | 40 // accepted by the hardware codec. |
41 class CONTENT_EXPORT V4L2VideoEncodeAccelerator | 41 class MEDIA_GPU_EXPORT V4L2VideoEncodeAccelerator |
42 : public media::VideoEncodeAccelerator { | 42 : public media::VideoEncodeAccelerator { |
43 public: | 43 public: |
44 explicit V4L2VideoEncodeAccelerator(const scoped_refptr<V4L2Device>& device); | 44 explicit V4L2VideoEncodeAccelerator(const scoped_refptr<V4L2Device>& device); |
45 ~V4L2VideoEncodeAccelerator() override; | 45 ~V4L2VideoEncodeAccelerator() override; |
46 | 46 |
47 // media::VideoEncodeAccelerator implementation. | 47 // media::VideoEncodeAccelerator implementation. |
48 media::VideoEncodeAccelerator::SupportedProfiles GetSupportedProfiles() | 48 media::VideoEncodeAccelerator::SupportedProfiles GetSupportedProfiles() |
49 override; | 49 override; |
50 bool Initialize(media::VideoPixelFormat format, | 50 bool Initialize(media::VideoPixelFormat format, |
51 const gfx::Size& input_visible_size, | 51 const gfx::Size& input_visible_size, |
52 media::VideoCodecProfile output_profile, | 52 media::VideoCodecProfile output_profile, |
53 uint32_t initial_bitrate, | 53 uint32_t initial_bitrate, |
54 Client* client) override; | 54 Client* client) override; |
55 void Encode(const scoped_refptr<media::VideoFrame>& frame, | 55 void Encode(const scoped_refptr<media::VideoFrame>& frame, |
56 bool force_keyframe) override; | 56 bool force_keyframe) override; |
57 void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer) | 57 void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer) override; |
58 override; | |
59 void RequestEncodingParametersChange(uint32_t bitrate, | 58 void RequestEncodingParametersChange(uint32_t bitrate, |
60 uint32_t framerate) override; | 59 uint32_t framerate) override; |
61 void Destroy() override; | 60 void Destroy() override; |
62 | 61 |
63 private: | 62 private: |
64 // Auto-destroy reference for BitstreamBuffer, for tracking buffers passed to | 63 // Auto-destroy reference for BitstreamBuffer, for tracking buffers passed to |
65 // this instance. | 64 // this instance. |
66 struct BitstreamBufferRef; | 65 struct BitstreamBufferRef; |
67 | 66 |
68 // Record for codec input buffers. | 67 // Record for codec input buffers. |
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253 bool output_streamon_; | 252 bool output_streamon_; |
254 // Output buffers enqueued to device. | 253 // Output buffers enqueued to device. |
255 int output_buffer_queued_count_; | 254 int output_buffer_queued_count_; |
256 // Output buffers ready to use; LIFO since we don't care about ordering. | 255 // Output buffers ready to use; LIFO since we don't care about ordering. |
257 std::vector<int> free_output_buffers_; | 256 std::vector<int> free_output_buffers_; |
258 // Mapping of int index to output buffer record. | 257 // Mapping of int index to output buffer record. |
259 std::vector<OutputRecord> output_buffer_map_; | 258 std::vector<OutputRecord> output_buffer_map_; |
260 | 259 |
261 // Bitstream buffers ready to be used to return encoded output, as a LIFO | 260 // Bitstream buffers ready to be used to return encoded output, as a LIFO |
262 // since we don't care about ordering. | 261 // since we don't care about ordering. |
263 std::vector<linked_ptr<BitstreamBufferRef> > encoder_output_queue_; | 262 std::vector<linked_ptr<BitstreamBufferRef>> encoder_output_queue_; |
264 | 263 |
265 // Image processor, if one is in use. | 264 // Image processor, if one is in use. |
266 std::unique_ptr<V4L2ImageProcessor> image_processor_; | 265 std::unique_ptr<V4L2ImageProcessor> image_processor_; |
267 // Indexes of free image processor output buffers. Only accessed on child | 266 // Indexes of free image processor output buffers. Only accessed on child |
268 // thread. | 267 // thread. |
269 std::vector<int> free_image_processor_output_buffers_; | 268 std::vector<int> free_image_processor_output_buffers_; |
270 // Video frames ready to be processed. Only accessed on child thread. | 269 // Video frames ready to be processed. Only accessed on child thread. |
271 std::queue<ImageProcessorInputRecord> image_processor_input_queue_; | 270 std::queue<ImageProcessorInputRecord> image_processor_input_queue_; |
272 // Mapping of int index to fds of image processor output buffer. | 271 // Mapping of int index to fds of image processor output buffer. |
273 std::vector<std::vector<base::ScopedFD>> image_processor_output_buffer_map_; | 272 std::vector<std::vector<base::ScopedFD>> image_processor_output_buffer_map_; |
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289 // WeakPtr<> pointing to |this| for use in posting tasks from the | 288 // WeakPtr<> pointing to |this| for use in posting tasks from the |
290 // image_processor_ back to the child thread. | 289 // image_processor_ back to the child thread. |
291 // Tasks posted onto encoder and poll threads can use base::Unretained(this), | 290 // Tasks posted onto encoder and poll threads can use base::Unretained(this), |
292 // as both threads will not outlive this object. | 291 // as both threads will not outlive this object. |
293 base::WeakPtr<V4L2VideoEncodeAccelerator> weak_this_; | 292 base::WeakPtr<V4L2VideoEncodeAccelerator> weak_this_; |
294 base::WeakPtrFactory<V4L2VideoEncodeAccelerator> weak_this_ptr_factory_; | 293 base::WeakPtrFactory<V4L2VideoEncodeAccelerator> weak_this_ptr_factory_; |
295 | 294 |
296 DISALLOW_COPY_AND_ASSIGN(V4L2VideoEncodeAccelerator); | 295 DISALLOW_COPY_AND_ASSIGN(V4L2VideoEncodeAccelerator); |
297 }; | 296 }; |
298 | 297 |
299 } // namespace content | 298 } // namespace media |
300 | 299 |
301 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ | 300 #endif // MEDIA_GPU_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ |
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