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Side by Side Diff: media/gpu/v4l2_image_processor.h

Issue 1882373004: Migrate content/common/gpu/media code to media/gpu (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Fix several more bot-identified build issues Created 4 years, 8 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 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_IMAGE_PROCESSOR_H_ 5 #ifndef MEDIA_GPU_V4L2_IMAGE_PROCESSOR_H_
6 #define CONTENT_COMMON_GPU_MEDIA_V4L2_IMAGE_PROCESSOR_H_ 6 #define MEDIA_GPU_V4L2_IMAGE_PROCESSOR_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
11 #include <queue> 11 #include <queue>
12 #include <vector> 12 #include <vector>
13 13
14 #include "base/macros.h" 14 #include "base/macros.h"
15 #include "base/memory/linked_ptr.h" 15 #include "base/memory/linked_ptr.h"
16 #include "base/memory/ref_counted.h" 16 #include "base/memory/ref_counted.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 "content/common/content_export.h"
20 #include "content/common/gpu/media/v4l2_device.h"
21 #include "media/base/video_frame.h" 19 #include "media/base/video_frame.h"
20 #include "media/gpu/media_gpu_export.h"
21 #include "media/gpu/v4l2_device.h"
22 22
23 namespace content { 23 namespace media {
24 24
25 // Handles image processing accelerators that expose a V4L2 memory-to-memory 25 // Handles image processing accelerators that expose a V4L2 memory-to-memory
26 // interface. The threading model of this class is the same as for other V4L2 26 // interface. The threading model of this class is the same as for other V4L2
27 // hardware accelerators (see V4L2VideoDecodeAccelerator) for more details. 27 // hardware accelerators (see V4L2VideoDecodeAccelerator) for more details.
28 class CONTENT_EXPORT V4L2ImageProcessor { 28 class MEDIA_GPU_EXPORT V4L2ImageProcessor {
29 public: 29 public:
30 explicit V4L2ImageProcessor(const scoped_refptr<V4L2Device>& device); 30 explicit V4L2ImageProcessor(const scoped_refptr<V4L2Device>& device);
31 virtual ~V4L2ImageProcessor(); 31 virtual ~V4L2ImageProcessor();
32 32
33 // Initializes the processor to convert from |input_format| to |output_format| 33 // Initializes the processor to convert from |input_format| to |output_format|
34 // and/or scale from |input_visible_size| to |output_visible_size|. 34 // and/or scale from |input_visible_size| to |output_visible_size|.
35 // Request the output buffers to be of at least |output_allocated_size|. The 35 // Request the output buffers to be of at least |output_allocated_size|. The
36 // number of input buffers and output buffers will be |num_buffers|. Provided 36 // number of input buffers and output buffers will be |num_buffers|. Provided
37 // |error_cb| will be called if an error occurs. Return true if the requested 37 // |error_cb| will be called if an error occurs. Return true if the requested
38 // configuration is supported. 38 // configuration is supported.
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152 // V4L2 device in use. 152 // V4L2 device in use.
153 scoped_refptr<V4L2Device> device_; 153 scoped_refptr<V4L2Device> device_;
154 154
155 // Thread to communicate with the device on. 155 // Thread to communicate with the device on.
156 base::Thread device_thread_; 156 base::Thread device_thread_;
157 // Thread used to poll the V4L2 for events only. 157 // Thread used to poll the V4L2 for events only.
158 base::Thread device_poll_thread_; 158 base::Thread device_poll_thread_;
159 159
160 // All the below members are to be accessed from device_thread_ only 160 // All the below members are to be accessed from device_thread_ only
161 // (if it's running). 161 // (if it's running).
162 std::queue<linked_ptr<JobRecord> > input_queue_; 162 std::queue<linked_ptr<JobRecord>> input_queue_;
163 std::queue<linked_ptr<JobRecord> > running_jobs_; 163 std::queue<linked_ptr<JobRecord>> running_jobs_;
164 164
165 // Input queue state. 165 // Input queue state.
166 bool input_streamon_; 166 bool input_streamon_;
167 // Number of input buffers enqueued to the device. 167 // Number of input buffers enqueued to the device.
168 int input_buffer_queued_count_; 168 int input_buffer_queued_count_;
169 // Input buffers ready to use; LIFO since we don't care about ordering. 169 // Input buffers ready to use; LIFO since we don't care about ordering.
170 std::vector<int> free_input_buffers_; 170 std::vector<int> free_input_buffers_;
171 // Mapping of int index to an input buffer record. 171 // Mapping of int index to an input buffer record.
172 std::vector<InputRecord> input_buffer_map_; 172 std::vector<InputRecord> input_buffer_map_;
173 173
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190 // thread to the device thread should use base::Unretained(this), 190 // thread to the device thread should use base::Unretained(this),
191 // and tasks posted the other way should use |weak_this_|. 191 // and tasks posted the other way should use |weak_this_|.
192 base::WeakPtr<V4L2ImageProcessor> weak_this_; 192 base::WeakPtr<V4L2ImageProcessor> weak_this_;
193 193
194 // Weak factory for producing weak pointers on the child thread. 194 // Weak factory for producing weak pointers on the child thread.
195 base::WeakPtrFactory<V4L2ImageProcessor> weak_this_factory_; 195 base::WeakPtrFactory<V4L2ImageProcessor> weak_this_factory_;
196 196
197 DISALLOW_COPY_AND_ASSIGN(V4L2ImageProcessor); 197 DISALLOW_COPY_AND_ASSIGN(V4L2ImageProcessor);
198 }; 198 };
199 199
200 } // namespace content 200 } // namespace media
201 201
202 #endif // CONTENT_COMMON_GPU_MEDIA_V4L2_IMAGE_PROCESSOR_H_ 202 #endif // MEDIA_GPU_V4L2_IMAGE_PROCESSOR_H_
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