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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 | 11 |
| 12 #include <list> | 12 #include <list> |
| 13 #include <memory> | 13 #include <memory> |
| 14 #include <vector> | 14 #include <vector> |
| 15 | 15 |
| 16 #include "base/files/scoped_file.h" | 16 #include "base/files/scoped_file.h" |
| 17 #include "base/macros.h" | 17 #include "base/macros.h" |
| 18 #include "base/memory/linked_ptr.h" | 18 #include "base/memory/linked_ptr.h" |
| 19 #include "base/memory/weak_ptr.h" | 19 #include "base/memory/weak_ptr.h" |
| 20 #include "base/threading/thread.h" | 20 #include "base/threading/thread.h" |
| 21 #include "base/time/time.h" | 21 #include "base/time/time.h" |
| 22 #include "content/common/content_export.h" | 22 #include "media/gpu/media_gpu_export.h" |
| 23 #include "content/common/gpu/media/v4l2_device.h" | 23 #include "media/gpu/v4l2_device.h" |
| 24 #include "content/common/gpu/media/v4l2_image_processor.h" | 24 #include "media/gpu/v4l2_image_processor.h" |
| 25 #include "media/video/video_encode_accelerator.h" | 25 #include "media/video/video_encode_accelerator.h" |
| 26 #include "ui/gfx/geometry/size.h" | 26 #include "ui/gfx/geometry/size.h" |
| 27 | 27 |
| 28 namespace media { | 28 namespace media { |
| 29 | 29 |
| 30 class BitstreamBuffer; | 30 class BitstreamBuffer; |
| 31 | 31 |
| 32 } // namespace media | 32 } // namespace media |
| 33 | 33 |
| 34 namespace content { | 34 namespace media { |
| 35 | 35 |
| 36 // This class handles video encode acceleration by interfacing with a V4L2 | 36 // This class handles video encode acceleration by interfacing with a V4L2 |
| 37 // device exposed by the codec hardware driver. The threading model of this | 37 // device exposed by the codec hardware driver. The threading model of this |
| 38 // class is the same as in the V4L2VideoDecodeAccelerator (from which class this | 38 // class is the same as in the V4L2VideoDecodeAccelerator (from which class this |
| 39 // was designed). | 39 // was designed). |
| 40 // This class may try to instantiate and use a V4L2ImageProcessor for input | 40 // This class may try to instantiate and use a V4L2ImageProcessor for input |
| 41 // format conversion, if the input format requested via Initialize() is not | 41 // format conversion, if the input format requested via Initialize() is not |
| 42 // accepted by the hardware codec. | 42 // accepted by the hardware codec. |
| 43 class CONTENT_EXPORT V4L2VideoEncodeAccelerator | 43 class MEDIA_GPU_EXPORT V4L2VideoEncodeAccelerator |
| 44 : public media::VideoEncodeAccelerator { | 44 : public media::VideoEncodeAccelerator { |
| 45 public: | 45 public: |
| 46 explicit V4L2VideoEncodeAccelerator(const scoped_refptr<V4L2Device>& device); | 46 explicit V4L2VideoEncodeAccelerator(const scoped_refptr<V4L2Device>& device); |
| 47 ~V4L2VideoEncodeAccelerator() override; | 47 ~V4L2VideoEncodeAccelerator() override; |
| 48 | 48 |
| 49 // media::VideoEncodeAccelerator implementation. | 49 // media::VideoEncodeAccelerator implementation. |
| 50 media::VideoEncodeAccelerator::SupportedProfiles GetSupportedProfiles() | 50 media::VideoEncodeAccelerator::SupportedProfiles GetSupportedProfiles() |
| 51 override; | 51 override; |
| 52 bool Initialize(media::VideoPixelFormat format, | 52 bool Initialize(media::VideoPixelFormat format, |
| 53 const gfx::Size& input_visible_size, | 53 const gfx::Size& input_visible_size, |
| 54 media::VideoCodecProfile output_profile, | 54 media::VideoCodecProfile output_profile, |
| 55 uint32_t initial_bitrate, | 55 uint32_t initial_bitrate, |
| 56 Client* client) override; | 56 Client* client) override; |
| 57 void Encode(const scoped_refptr<media::VideoFrame>& frame, | 57 void Encode(const scoped_refptr<media::VideoFrame>& frame, |
| 58 bool force_keyframe) override; | 58 bool force_keyframe) override; |
| 59 void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer) | 59 void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer) override; |
| 60 override; | |
| 61 void RequestEncodingParametersChange(uint32_t bitrate, | 60 void RequestEncodingParametersChange(uint32_t bitrate, |
| 62 uint32_t framerate) override; | 61 uint32_t framerate) override; |
| 63 void Destroy() override; | 62 void Destroy() override; |
| 64 | 63 |
| 65 private: | 64 private: |
| 66 // Auto-destroy reference for BitstreamBuffer, for tracking buffers passed to | 65 // Auto-destroy reference for BitstreamBuffer, for tracking buffers passed to |
| 67 // this instance. | 66 // this instance. |
| 68 struct BitstreamBufferRef; | 67 struct BitstreamBufferRef; |
| 69 | 68 |
| 70 // Record for codec input buffers. | 69 // Record for codec input buffers. |
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| 255 bool output_streamon_; | 254 bool output_streamon_; |
| 256 // Output buffers enqueued to device. | 255 // Output buffers enqueued to device. |
| 257 int output_buffer_queued_count_; | 256 int output_buffer_queued_count_; |
| 258 // Output buffers ready to use; LIFO since we don't care about ordering. | 257 // Output buffers ready to use; LIFO since we don't care about ordering. |
| 259 std::vector<int> free_output_buffers_; | 258 std::vector<int> free_output_buffers_; |
| 260 // Mapping of int index to output buffer record. | 259 // Mapping of int index to output buffer record. |
| 261 std::vector<OutputRecord> output_buffer_map_; | 260 std::vector<OutputRecord> output_buffer_map_; |
| 262 | 261 |
| 263 // Bitstream buffers ready to be used to return encoded output, as a LIFO | 262 // Bitstream buffers ready to be used to return encoded output, as a LIFO |
| 264 // since we don't care about ordering. | 263 // since we don't care about ordering. |
| 265 std::vector<linked_ptr<BitstreamBufferRef> > encoder_output_queue_; | 264 std::vector<linked_ptr<BitstreamBufferRef>> encoder_output_queue_; |
| 266 | 265 |
| 267 // Image processor, if one is in use. | 266 // Image processor, if one is in use. |
| 268 std::unique_ptr<V4L2ImageProcessor> image_processor_; | 267 std::unique_ptr<V4L2ImageProcessor> image_processor_; |
| 269 // Indexes of free image processor output buffers. Only accessed on child | 268 // Indexes of free image processor output buffers. Only accessed on child |
| 270 // thread. | 269 // thread. |
| 271 std::vector<int> free_image_processor_output_buffers_; | 270 std::vector<int> free_image_processor_output_buffers_; |
| 272 // Video frames ready to be processed. Only accessed on child thread. | 271 // Video frames ready to be processed. Only accessed on child thread. |
| 273 std::queue<ImageProcessorInputRecord> image_processor_input_queue_; | 272 std::queue<ImageProcessorInputRecord> image_processor_input_queue_; |
| 274 // Mapping of int index to fds of image processor output buffer. | 273 // Mapping of int index to fds of image processor output buffer. |
| 275 std::vector<std::vector<base::ScopedFD>> image_processor_output_buffer_map_; | 274 std::vector<std::vector<base::ScopedFD>> image_processor_output_buffer_map_; |
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| 291 // WeakPtr<> pointing to |this| for use in posting tasks from the | 290 // WeakPtr<> pointing to |this| for use in posting tasks from the |
| 292 // image_processor_ back to the child thread. | 291 // image_processor_ back to the child thread. |
| 293 // Tasks posted onto encoder and poll threads can use base::Unretained(this), | 292 // Tasks posted onto encoder and poll threads can use base::Unretained(this), |
| 294 // as both threads will not outlive this object. | 293 // as both threads will not outlive this object. |
| 295 base::WeakPtr<V4L2VideoEncodeAccelerator> weak_this_; | 294 base::WeakPtr<V4L2VideoEncodeAccelerator> weak_this_; |
| 296 base::WeakPtrFactory<V4L2VideoEncodeAccelerator> weak_this_ptr_factory_; | 295 base::WeakPtrFactory<V4L2VideoEncodeAccelerator> weak_this_ptr_factory_; |
| 297 | 296 |
| 298 DISALLOW_COPY_AND_ASSIGN(V4L2VideoEncodeAccelerator); | 297 DISALLOW_COPY_AND_ASSIGN(V4L2VideoEncodeAccelerator); |
| 299 }; | 298 }; |
| 300 | 299 |
| 301 } // namespace content | 300 } // namespace media |
| 302 | 301 |
| 303 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ | 302 #endif // MEDIA_GPU_V4L2_VIDEO_ENCODE_ACCELERATOR_H_ |
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