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Issue 1734613003: Move libvpx_new to libvpx (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 9 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 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/file_video_capture_device.h" 5 #include "media/capture/video/file_video_capture_device.h"
6 6
7 #include <stddef.h> 7 #include <stddef.h>
8 #include <utility> 8 #include <utility>
9 9
10 #include "base/bind.h" 10 #include "base/bind.h"
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41 // This function parses the ASCII string in |header| as belonging to a Y4M file, 41 // This function parses the ASCII string in |header| as belonging to a Y4M file,
42 // returning the collected format in |video_format|. For a non authoritative 42 // returning the collected format in |video_format|. For a non authoritative
43 // explanation of the header format, check 43 // explanation of the header format, check
44 // http://wiki.multimedia.cx/index.php?title=YUV4MPEG2 44 // http://wiki.multimedia.cx/index.php?title=YUV4MPEG2
45 // Restrictions: Only interlaced I420 pixel format is supported, and pixel 45 // Restrictions: Only interlaced I420 pixel format is supported, and pixel
46 // aspect ratio is ignored. 46 // aspect ratio is ignored.
47 // Implementation notes: Y4M header should end with an ASCII 0x20 (whitespace) 47 // Implementation notes: Y4M header should end with an ASCII 0x20 (whitespace)
48 // character, however all examples mentioned in the Y4M header description end 48 // character, however all examples mentioned in the Y4M header description end
49 // with a newline character instead. Also, some headers do _not_ specify pixel 49 // with a newline character instead. Also, some headers do _not_ specify pixel
50 // format, in this case it means I420. 50 // format, in this case it means I420.
51 // This code was inspired by third_party/libvpx_new/.../y4minput.* . 51 // This code was inspired by third_party/libvpx/.../y4minput.* .
52 void ParseY4MTags(const std::string& file_header, 52 void ParseY4MTags(const std::string& file_header,
53 media::VideoCaptureFormat* video_format) { 53 media::VideoCaptureFormat* video_format) {
54 media::VideoCaptureFormat format; 54 media::VideoCaptureFormat format;
55 format.pixel_format = media::PIXEL_FORMAT_I420; 55 format.pixel_format = media::PIXEL_FORMAT_I420;
56 size_t index = 0; 56 size_t index = 0;
57 size_t blank_position = 0; 57 size_t blank_position = 0;
58 base::StringPiece token; 58 base::StringPiece token;
59 while ((blank_position = file_header.find_first_of("\n ", index)) != 59 while ((blank_position = file_header.find_first_of("\n ", index)) !=
60 std::string::npos) { 60 std::string::npos) {
61 // Every token is supposed to have an identifier letter and a bunch of 61 // Every token is supposed to have an identifier letter and a bunch of
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381 if (next_frame_time_ < current_time) 381 if (next_frame_time_ < current_time)
382 next_frame_time_ = current_time; 382 next_frame_time_ = current_time;
383 } 383 }
384 base::MessageLoop::current()->PostDelayedTask( 384 base::MessageLoop::current()->PostDelayedTask(
385 FROM_HERE, base::Bind(&FileVideoCaptureDevice::OnCaptureTask, 385 FROM_HERE, base::Bind(&FileVideoCaptureDevice::OnCaptureTask,
386 base::Unretained(this)), 386 base::Unretained(this)),
387 next_frame_time_ - current_time); 387 next_frame_time_ - current_time);
388 } 388 }
389 389
390 } // namespace media 390 } // namespace media
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