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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 #ifndef REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ | 5 #ifndef REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ |
| 6 #define REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ | 6 #define REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include "base/callback.h" | 10 #include "base/callback.h" |
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| 44 std::unique_ptr<EncodedFrame> Encode(const webrtc::DesktopFrame& frame, | 44 std::unique_ptr<EncodedFrame> Encode(const webrtc::DesktopFrame& frame, |
| 45 const FrameParams& params) override; | 45 const FrameParams& params) override; |
| 46 | 46 |
| 47 private: | 47 private: |
| 48 explicit WebrtcVideoEncoderVpx(bool use_vp9); | 48 explicit WebrtcVideoEncoderVpx(bool use_vp9); |
| 49 | 49 |
| 50 // (Re)Configures this instance to encode frames of the specified |size|, | 50 // (Re)Configures this instance to encode frames of the specified |size|, |
| 51 // with the configured lossless color & encoding modes. | 51 // with the configured lossless color & encoding modes. |
| 52 void Configure(const webrtc::DesktopSize& size); | 52 void Configure(const webrtc::DesktopSize& size); |
| 53 | 53 |
| 54 // Updates target bitrate. | 54 // Updates codec configuration. |
| 55 void UpdateTargetBitrate(int new_bitrate_kbps); | 55 void UpdateConfig(const FrameParams& params); |
| 56 | 56 |
| 57 // Prepares |image_| for encoding. Writes updated rectangles into | 57 // Prepares |image_| for encoding. Writes updated rectangles into |
| 58 // |updated_region|. | 58 // |updated_region|. |
| 59 void PrepareImage(const webrtc::DesktopFrame& frame, | 59 void PrepareImage(const webrtc::DesktopFrame& frame, |
| 60 webrtc::DesktopRegion* updated_region); | 60 webrtc::DesktopRegion* updated_region); |
| 61 | 61 |
| 62 // Clears active map. |
| 63 void ClearActiveMap(); |
| 64 |
| 62 // Updates the active map according to |updated_region|. Active map is then | 65 // Updates the active map according to |updated_region|. Active map is then |
| 63 // given to the encoder to speed up encoding. | 66 // given to the encoder to speed up encoding. |
| 64 void SetActiveMapFromRegion(const webrtc::DesktopRegion& updated_region); | 67 void SetActiveMapFromRegion(const webrtc::DesktopRegion& updated_region); |
| 65 | 68 |
| 66 // Adds areas changed in the most recent frame to |updated_region|. This | 69 // Adds areas changed in the most recent frame to |updated_region|. This |
| 67 // includes both content changes and areas enhanced by cyclic refresh. | 70 // includes both content changes and areas enhanced by cyclic refresh. |
| 68 void UpdateRegionFromActiveMap(webrtc::DesktopRegion* updated_region); | 71 void UpdateRegionFromActiveMap(webrtc::DesktopRegion* updated_region); |
| 69 | 72 |
| 70 // True if the encoder is for VP9, false for VP8. | 73 // True if the encoder is for VP9, false for VP8. |
| 71 const bool use_vp9_; | 74 const bool use_vp9_; |
| 72 | 75 |
| 73 // Options controlling VP9 encode quantization and color space. | 76 // Options controlling VP9 encode quantization and color space. |
| 74 // These are always off (false) for VP8. | 77 // These are always off (false) for VP8. |
| 75 bool lossless_encode_ = false; | 78 bool lossless_encode_ = false; |
| 76 bool lossless_color_ = false; | 79 bool lossless_color_ = false; |
| 77 | 80 |
| 78 // Holds the initialized & configured codec. | 81 // Holds the initialized & configured codec. |
| 79 ScopedVpxCodec codec_; | 82 ScopedVpxCodec codec_; |
| 80 | 83 |
| 81 vpx_codec_enc_cfg_t config_; | 84 vpx_codec_enc_cfg_t config_; |
| 82 uint32_t target_bitrate_kbps_; | |
| 83 | 85 |
| 84 // Used to generate zero-based frame timestamps. | 86 // Used to generate zero-based frame timestamps. |
| 85 base::TimeTicks timestamp_base_; | 87 base::TimeTicks timestamp_base_; |
| 86 | 88 |
| 87 // VPX image and buffer to hold the actual YUV planes. | 89 // VPX image and buffer to hold the actual YUV planes. |
| 88 std::unique_ptr<vpx_image_t> image_; | 90 std::unique_ptr<vpx_image_t> image_; |
| 89 std::unique_ptr<uint8_t[]> image_buffer_; | 91 std::unique_ptr<uint8_t[]> image_buffer_; |
| 90 | 92 |
| 91 // Active map used to optimize out processing of un-changed macroblocks. | 93 // Active map used to optimize out processing of un-changed macroblocks. |
| 92 std::unique_ptr<uint8_t[]> active_map_; | 94 std::unique_ptr<uint8_t[]> active_map_; |
| 93 webrtc::DesktopSize active_map_size_; | 95 webrtc::DesktopSize active_map_size_; |
| 94 | 96 |
| 95 // True if the codec wants unchanged frames to finish topping-off with. | |
| 96 bool encode_unchanged_frame_; | |
| 97 | |
| 98 base::DefaultTickClock default_tick_clock_; | 97 base::DefaultTickClock default_tick_clock_; |
| 99 base::TickClock* clock_; | 98 base::TickClock* clock_; |
| 100 | 99 |
| 101 DISALLOW_COPY_AND_ASSIGN(WebrtcVideoEncoderVpx); | 100 DISALLOW_COPY_AND_ASSIGN(WebrtcVideoEncoderVpx); |
| 102 }; | 101 }; |
| 103 | 102 |
| 104 } // namespace remoting | 103 } // namespace remoting |
| 105 | 104 |
| 106 #endif // REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ | 105 #endif // REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_VPX_H_ |
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