Index: media/video/capture/linux/v4l2_capture_delegate.h |
diff --git a/media/video/capture/linux/v4l2_capture_delegate.h b/media/video/capture/linux/v4l2_capture_delegate.h |
deleted file mode 100644 |
index bd0ccad6cf73c30263474a6ca616784c3ca1e33d..0000000000000000000000000000000000000000 |
--- a/media/video/capture/linux/v4l2_capture_delegate.h |
+++ /dev/null |
@@ -1,150 +0,0 @@ |
-// Copyright 2015 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_ |
-#define MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_ |
- |
-#if defined(OS_OPENBSD) |
-#include <sys/videoio.h> |
-#else |
-#include <linux/videodev2.h> |
-#endif |
- |
-#include "base/files/scoped_file.h" |
-#include "base/memory/ref_counted.h" |
-#include "base/memory/scoped_vector.h" |
-#include "media/video/capture/video_capture_device.h" |
- |
-namespace media { |
- |
-// Class doing the actual Linux capture using V4L2 API. V4L2 SPLANE/MPLANE |
-// capture specifics are implemented in derived classes. Created and destroyed |
-// on the owner's thread, otherwise living and operating on |v4l2_task_runner_|. |
-class V4L2CaptureDelegate |
- : public base::RefCountedThreadSafe<V4L2CaptureDelegate> { |
- public: |
- // Creates the appropiate VideoCaptureDelegate according to parameters. |
- static scoped_refptr<V4L2CaptureDelegate> CreateV4L2CaptureDelegate( |
- const VideoCaptureDevice::Name& device_name, |
- const scoped_refptr<base::SingleThreadTaskRunner>& v4l2_task_runner, |
- int power_line_frequency); |
- |
- // Retrieves the #planes for a given |fourcc|, or 0 if unknown. |
- static size_t GetNumPlanesForFourCc(uint32_t fourcc); |
- // Returns the Chrome pixel format for |v4l2_fourcc| or PIXEL_FORMAT_UNKNOWN. |
- static VideoPixelFormat V4l2FourCcToChromiumPixelFormat(uint32_t v4l2_fourcc); |
- |
- // Composes a list of usable and supported pixel formats, in order of |
- // preference, with MJPEG prioritised depending on |prefer_mjpeg|. |
- static std::list<uint32_t> GetListOfUsableFourCcs(bool prefer_mjpeg); |
- |
- // Forward-to versions of VideoCaptureDevice virtual methods. |
- void AllocateAndStart(int width, |
- int height, |
- float frame_rate, |
- scoped_ptr<VideoCaptureDevice::Client> client); |
- void StopAndDeAllocate(); |
- |
- void SetRotation(int rotation); |
- |
- protected: |
- // Class keeping track of SPLANE/MPLANE V4L2 buffers, mmap()ed on construction |
- // and munmap()ed on destruction. Destruction is syntactically equal for |
- // S/MPLANE but not construction, so this is implemented in derived classes. |
- // Internally it has a vector of planes, which for SPLANE will contain only |
- // one element. |
- class BufferTracker : public base::RefCounted<BufferTracker> { |
- public: |
- BufferTracker(); |
- // Abstract method to mmap() given |fd| according to |buffer|, planarity |
- // specific. |
- virtual bool Init(int fd, const v4l2_buffer& buffer) = 0; |
- |
- uint8_t* const GetPlaneStart(size_t plane) const { |
- DCHECK_LT(plane, planes_.size()); |
- return planes_[plane].start; |
- } |
- |
- protected: |
- friend class base::RefCounted<BufferTracker>; |
- virtual ~BufferTracker(); |
- // Adds a given mmap()ed plane to |planes_|. |
- void AddMmapedPlane(uint8_t* const start, size_t length); |
- |
- private: |
- struct Plane { |
- uint8_t* start; |
- size_t length; |
- }; |
- std::vector<Plane> planes_; |
- }; |
- |
- V4L2CaptureDelegate( |
- const VideoCaptureDevice::Name& device_name, |
- const scoped_refptr<base::SingleThreadTaskRunner>& v4l2_task_runner, |
- int power_line_frequency); |
- virtual ~V4L2CaptureDelegate(); |
- |
- // Creates the necessary, planarity-specific, internal tracking schemes, |
- virtual scoped_refptr<BufferTracker> CreateBufferTracker() const = 0; |
- |
- // Fill in |format| with the given parameters, in a planarity dependent way. |
- virtual bool FillV4L2Format(v4l2_format* format, |
- uint32_t width, |
- uint32_t height, |
- uint32_t pixelformat_fourcc) const = 0; |
- |
- // Finish filling |buffer| struct with planarity-dependent data. |
- virtual void FinishFillingV4L2Buffer(v4l2_buffer* buffer) const = 0; |
- |
- // Sends the captured |buffer| to the |client_|, synchronously. |
- virtual void SendBuffer( |
- const scoped_refptr<BufferTracker>& buffer_tracker, |
- const v4l2_format& format) const = 0; |
- |
- // A few accessors for SendBuffer()'s to access private member variables. |
- VideoCaptureFormat capture_format() const { return capture_format_; } |
- VideoCaptureDevice::Client* client() const { return client_.get(); } |
- int rotation() const { return rotation_; } |
- |
- private: |
- friend class base::RefCountedThreadSafe<V4L2CaptureDelegate>; |
- |
- // Returns the input |fourcc| as a std::string four char representation. |
- static std::string FourccToString(uint32_t fourcc); |
- // VIDIOC_QUERYBUFs a buffer from V4L2, creates a BufferTracker for it and |
- // enqueues it (VIDIOC_QBUF) back into V4L2. |
- bool MapAndQueueBuffer(int index); |
- // Fills all common parts of |buffer|. Delegates to FinishFillingV4L2Buffer() |
- // for filling in the planar-dependent parts. |
- void FillV4L2Buffer(v4l2_buffer* buffer, int i) const; |
- void DoCapture(); |
- void SetErrorState(const std::string& reason); |
- |
- const v4l2_buf_type capture_type_; |
- const scoped_refptr<base::SingleThreadTaskRunner> v4l2_task_runner_; |
- const VideoCaptureDevice::Name device_name_; |
- const int power_line_frequency_; |
- |
- // The following members are only known on AllocateAndStart(). |
- VideoCaptureFormat capture_format_; |
- v4l2_format video_fmt_; |
- scoped_ptr<VideoCaptureDevice::Client> client_; |
- base::ScopedFD device_fd_; |
- |
- // Vector of BufferTracker to keep track of mmap()ed pointers and their use. |
- std::vector<scoped_refptr<BufferTracker>> buffer_tracker_pool_; |
- |
- bool is_capturing_; |
- int timeout_count_; |
- |
- // Clockwise rotation in degrees. This value should be 0, 90, 180, or 270. |
- int rotation_; |
- |
- DISALLOW_COPY_AND_ASSIGN(V4L2CaptureDelegate); |
-}; |
- |
-} // namespace media |
- |
-#endif // MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_ |