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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/base/video_capture_types.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/macros.h" | |
| 9 #include "base/strings/stringprintf.h" | |
| 10 #include "media/base/limits.h" | |
| 11 #include "media/base/video_frame.h" | |
| 12 | |
| 13 namespace media { | |
| 14 | |
| 15 // This list is ordered by precedence of use. | |
| 16 static VideoPixelFormat const kSupportedCapturePixelFormats[] = { | |
| 17 PIXEL_FORMAT_I420, | |
| 18 PIXEL_FORMAT_YV12, | |
| 19 PIXEL_FORMAT_NV12, | |
| 20 PIXEL_FORMAT_NV21, | |
| 21 PIXEL_FORMAT_UYVY, | |
| 22 PIXEL_FORMAT_YUY2, | |
| 23 PIXEL_FORMAT_RGB24, | |
| 24 PIXEL_FORMAT_RGB32, | |
| 25 PIXEL_FORMAT_ARGB, | |
| 26 PIXEL_FORMAT_MJPEG, | |
| 27 }; | |
| 28 | |
| 29 VideoCaptureFormat::VideoCaptureFormat() | |
| 30 : frame_rate(0.0f), | |
| 31 pixel_format(PIXEL_FORMAT_UNKNOWN), | |
| 32 pixel_storage(PIXEL_STORAGE_CPU) { | |
| 33 } | |
| 34 | |
| 35 VideoCaptureFormat::VideoCaptureFormat(const gfx::Size& frame_size, | |
| 36 float frame_rate, | |
| 37 VideoPixelFormat pixel_format) | |
| 38 : frame_size(frame_size), | |
| 39 frame_rate(frame_rate), | |
| 40 pixel_format(pixel_format), | |
| 41 pixel_storage(PIXEL_STORAGE_CPU) { | |
| 42 } | |
| 43 | |
| 44 VideoCaptureFormat::VideoCaptureFormat(const gfx::Size& frame_size, | |
| 45 float frame_rate, | |
| 46 VideoPixelFormat pixel_format, | |
| 47 VideoPixelStorage pixel_storage) | |
| 48 : frame_size(frame_size), | |
| 49 frame_rate(frame_rate), | |
| 50 pixel_format(pixel_format), | |
| 51 pixel_storage(pixel_storage) { | |
| 52 } | |
| 53 | |
| 54 bool VideoCaptureFormat::IsValid() const { | |
| 55 return (frame_size.width() < media::limits::kMaxDimension) && | |
| 56 (frame_size.height() < media::limits::kMaxDimension) && | |
| 57 (frame_size.GetArea() >= 0) && | |
| 58 (frame_size.GetArea() < media::limits::kMaxCanvas) && | |
| 59 (frame_rate >= 0.0f) && | |
| 60 (frame_rate < media::limits::kMaxFramesPerSecond) && | |
| 61 (pixel_format >= PIXEL_FORMAT_UNKNOWN && | |
| 62 pixel_format <= PIXEL_FORMAT_MAX); | |
| 63 } | |
| 64 | |
| 65 size_t VideoCaptureFormat::ImageAllocationSize() const { | |
| 66 return VideoFrame::AllocationSize(pixel_format, frame_size); | |
| 67 } | |
| 68 | |
| 69 //static | |
| 70 std::string VideoCaptureFormat::ToString(const VideoCaptureFormat& format) { | |
| 71 // Beware: This string is parsed by manager.js:parseVideoCaptureFormat_, | |
| 72 // take care when changing the formatting. | |
| 73 return base::StringPrintf( | |
| 74 "(%s)@%.3ffps, pixel format: %s, storage: %s", | |
| 75 format.frame_size.ToString().c_str(), format.frame_rate, | |
| 76 VideoPixelFormatToString(format.pixel_format).c_str(), | |
| 77 PixelStorageToString(format.pixel_storage).c_str()); | |
| 78 } | |
| 79 | |
| 80 // static | |
| 81 std::string VideoCaptureFormat::PixelStorageToString( | |
| 82 VideoPixelStorage storage) { | |
| 83 switch (storage) { | |
| 84 case PIXEL_STORAGE_CPU: | |
| 85 return "CPU"; | |
| 86 } | |
| 87 NOTREACHED() << "Invalid VideoPixelStorage provided: " | |
| 88 << static_cast<int>(storage); | |
| 89 return std::string(); | |
| 90 } | |
| 91 | |
| 92 // static | |
| 93 bool VideoCaptureFormat::ComparePixelFormatPreference( | |
| 94 const VideoPixelFormat& lhs, | |
| 95 const VideoPixelFormat& rhs) { | |
| 96 auto* format_lhs = std::find( | |
| 97 kSupportedCapturePixelFormats, | |
| 98 kSupportedCapturePixelFormats + arraysize(kSupportedCapturePixelFormats), | |
| 99 lhs); | |
| 100 auto* format_rhs = std::find( | |
| 101 kSupportedCapturePixelFormats, | |
| 102 kSupportedCapturePixelFormats + arraysize(kSupportedCapturePixelFormats), | |
| 103 rhs); | |
| 104 return format_lhs < format_rhs; | |
| 105 } | |
| 106 | |
| 107 VideoCaptureParams::VideoCaptureParams() | |
| 108 : resolution_change_policy(RESOLUTION_POLICY_FIXED_RESOLUTION), | |
| 109 power_line_frequency(PowerLineFrequency::FREQUENCY_DEFAULT) {} | |
| 110 | |
| 111 bool VideoCaptureParams::IsValid() const { | |
| 112 return requested_format.IsValid() && | |
| 113 resolution_change_policy >= RESOLUTION_POLICY_FIXED_RESOLUTION && | |
| 114 resolution_change_policy <= RESOLUTION_POLICY_LAST && | |
| 115 power_line_frequency >= PowerLineFrequency::FREQUENCY_DEFAULT && | |
| 116 power_line_frequency <= PowerLineFrequency::FREQUENCY_MAX; | |
| 117 } | |
| 118 | |
| 119 } // namespace media | |
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Chromium Code Reviews
Issue 2415703002:
Move files video_capture*.* from media/base to media/capture (Closed)
