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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2010 Google Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 * this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 * this list of conditions and the following disclaimer in the documentation | |
| 12 * and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
| 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #ifndef WEBRTC_MEDIA_DEVICES_YUVFRAMESCAPTURER_H_ | |
| 29 #define WEBRTC_MEDIA_DEVICES_YUVFRAMESCAPTURER_H_ | |
| 30 | |
| 31 #include <string> | |
| 32 #include <vector> | |
| 33 | |
| 34 #include "webrtc/base/stream.h" | |
| 35 #include "webrtc/base/stringutils.h" | |
| 36 #include "webrtc/media/base/videocapturer.h" | |
| 37 #include "webrtc/media/base/yuvframegenerator.h" | |
| 38 | |
| 39 | |
| 40 namespace rtc { | |
| 41 class FileStream; | |
| 42 } | |
| 43 | |
| 44 namespace cricket { | |
| 45 | |
| 46 | |
| 47 // Simulated video capturer that periodically reads frames from a file. | |
| 48 class YuvFramesCapturer : public VideoCapturer { | |
| 49 public: | |
| 50 YuvFramesCapturer(); | |
| 51 YuvFramesCapturer(int width, int height); | |
| 52 virtual ~YuvFramesCapturer(); | |
| 53 | |
| 54 static const char* kYuvFrameDeviceName; | |
| 55 static Device CreateYuvFramesCapturerDevice() { | |
| 56 std::stringstream id; | |
| 57 id << kYuvFrameDeviceName; | |
| 58 return Device(id.str(), id.str()); | |
| 59 } | |
| 60 static bool IsYuvFramesCapturerDevice(const Device& device) { | |
| 61 return rtc::starts_with(device.id.c_str(), kYuvFrameDeviceName); | |
| 62 } | |
| 63 | |
| 64 void Init(); | |
| 65 // Override virtual methods of parent class VideoCapturer. | |
| 66 virtual CaptureState Start(const VideoFormat& capture_format); | |
| 67 virtual void Stop(); | |
| 68 virtual bool IsRunning(); | |
| 69 virtual bool IsScreencast() const { return false; } | |
| 70 | |
| 71 protected: | |
| 72 // Override virtual methods of parent class VideoCapturer. | |
| 73 virtual bool GetPreferredFourccs(std::vector<uint32_t>* fourccs); | |
| 74 | |
| 75 // Read a frame and determine how long to wait for the next frame. | |
| 76 void ReadFrame(bool first_frame); | |
| 77 | |
| 78 private: | |
| 79 class YuvFramesThread; // Forward declaration, defined in .cc. | |
| 80 | |
| 81 YuvFrameGenerator* frame_generator_; | |
| 82 CapturedFrame captured_frame_; | |
| 83 YuvFramesThread* frames_generator_thread; | |
| 84 int width_; | |
| 85 int height_; | |
| 86 uint32_t frame_data_size_; | |
| 87 uint32_t frame_index_; | |
| 88 | |
| 89 int64_t barcode_reference_timestamp_millis_; | |
| 90 int32_t barcode_interval_; | |
| 91 int32_t GetBarcodeValue(); | |
| 92 | |
| 93 RTC_DISALLOW_COPY_AND_ASSIGN(YuvFramesCapturer); | |
| 94 }; | |
| 95 | |
| 96 } // namespace cricket | |
| 97 | |
| 98 #endif // WEBRTC_MEDIA_DEVICES_YUVFRAMESCAPTURER_H_ | |
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