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Side by Side Diff: device/capture/video/linux/v4l2_capture_delegate.cc

Issue 2143903003: [WIP] Move media/capture to device/capture (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 5 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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 #include "media/capture/video/linux/v4l2_capture_delegate.h" 5 #include "device/capture/video/linux/v4l2_capture_delegate.h"
6 6
7 #include <poll.h> 7 #include <poll.h>
8 #include <sys/fcntl.h> 8 #include <sys/fcntl.h>
9 #include <sys/ioctl.h> 9 #include <sys/ioctl.h>
10 #include <sys/mman.h> 10 #include <sys/mman.h>
11 #include <utility> 11 #include <utility>
12 12
13 #include "base/bind.h" 13 #include "base/bind.h"
14 #include "base/files/file_enumerator.h" 14 #include "base/files/file_enumerator.h"
15 #include "base/posix/eintr_wrapper.h" 15 #include "base/posix/eintr_wrapper.h"
16 #include "base/strings/stringprintf.h" 16 #include "base/strings/stringprintf.h"
17 #include "build/build_config.h" 17 #include "build/build_config.h"
18 #include "device/capture/video/linux/video_capture_device_linux.h"
18 #include "media/base/bind_to_current_loop.h" 19 #include "media/base/bind_to_current_loop.h"
19 #include "media/capture/video/linux/video_capture_device_linux.h"
20 20
21 namespace media { 21 namespace media {
22 22
23 // Desired number of video buffers to allocate. The actual number of allocated 23 // Desired number of video buffers to allocate. The actual number of allocated
24 // buffers by v4l2 driver can be higher or lower than this number. 24 // buffers by v4l2 driver can be higher or lower than this number.
25 // kNumVideoBuffers should not be too small, or Chrome may not return enough 25 // kNumVideoBuffers should not be too small, or Chrome may not return enough
26 // buffers back to driver in time. 26 // buffers back to driver in time.
27 const uint32_t kNumVideoBuffers = 4; 27 const uint32_t kNumVideoBuffers = 4;
28 // Timeout in milliseconds v4l2_thread_ blocks waiting for a frame from the hw. 28 // Timeout in milliseconds v4l2_thread_ blocks waiting for a frame from the hw.
29 // This value has been fine tuned. Before changing or modifying it see 29 // This value has been fine tuned. Before changing or modifying it see
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437 DLOG(ERROR) << "Error mmap()ing a V4L2 buffer into userspace"; 437 DLOG(ERROR) << "Error mmap()ing a V4L2 buffer into userspace";
438 return false; 438 return false;
439 } 439 }
440 start_ = static_cast<uint8_t*>(start); 440 start_ = static_cast<uint8_t*>(start);
441 length_ = buffer.length; 441 length_ = buffer.length;
442 payload_size_ = 0; 442 payload_size_ = 0;
443 return true; 443 return true;
444 } 444 }
445 445
446 } // namespace media 446 } // namespace media
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