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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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92 // of the frames. | 92 // of the frames. |
93 FrameDecision ManageFrameGeneric(RtpFrameObject* frame, int picture_id) | 93 FrameDecision ManageFrameGeneric(RtpFrameObject* frame, int picture_id) |
94 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 94 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
95 | 95 |
96 // Find references for Vp8 frames | 96 // Find references for Vp8 frames |
97 FrameDecision ManageFrameVp8(RtpFrameObject* frame) | 97 FrameDecision ManageFrameVp8(RtpFrameObject* frame) |
98 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 98 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
99 | 99 |
100 // Updates necessary layer info state used to determine frame references for | 100 // Updates necessary layer info state used to determine frame references for |
101 // Vp8. | 101 // Vp8. |
102 void UpdateLayerInfoVp8(RtpFrameObject* frame, | 102 void UpdateLayerInfoVp8(RtpFrameObject* frame) |
103 const RTPVideoHeaderVP8& codec_header) | |
104 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 103 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
105 | 104 |
106 // Find references for Vp9 frames | 105 // Find references for Vp9 frames |
107 FrameDecision ManageFrameVp9(RtpFrameObject* frame) | 106 FrameDecision ManageFrameVp9(RtpFrameObject* frame) |
108 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 107 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
109 | 108 |
110 // Check if we are missing a frame necessary to determine the references | 109 // Check if we are missing a frame necessary to determine the references |
111 // for this frame. | 110 // for this frame. |
112 bool MissingRequiredFrameVp9(uint16_t picture_id, const GofInfo& info) | 111 bool MissingRequiredFrameVp9(uint16_t picture_id, const GofInfo& info) |
113 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 112 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
114 | 113 |
115 // Updates which frames that have been received. If there is a gap, | 114 // Updates which frames that have been received. If there is a gap, |
116 // missing frames will be added to |missing_frames_for_layer_| or | 115 // missing frames will be added to |missing_frames_for_layer_| or |
117 // if this is an already missing frame then it will be removed. | 116 // if this is an already missing frame then it will be removed. |
118 void FrameReceivedVp9(uint16_t picture_id, GofInfo* info) | 117 void FrameReceivedVp9(uint16_t picture_id, GofInfo* info) |
119 EXCLUSIVE_LOCKS_REQUIRED(crit_); | 118 EXCLUSIVE_LOCKS_REQUIRED(crit_); |
120 | 119 |
121 // Check if there is a frame with the up-switch flag set in the interval | 120 // Check if there is a frame with the up-switch flag set in the interval |
122 // (|pid_ref|, |picture_id|) with temporal layer smaller than |temporal_idx|. | 121 // (|pid_ref|, |picture_id|) with temporal layer smaller than |temporal_idx|. |
123 bool UpSwitchInIntervalVp9(uint16_t picture_id, | 122 bool UpSwitchInIntervalVp9(uint16_t picture_id, |
124 uint8_t temporal_idx, | 123 uint8_t temporal_idx, |
125 uint16_t pid_ref) EXCLUSIVE_LOCKS_REQUIRED(crit_); | 124 uint16_t pid_ref) EXCLUSIVE_LOCKS_REQUIRED(crit_); |
126 | 125 |
127 // Unwrap |frame|s picture id and its references to 16 bits. | 126 // Unwrap |frame|s picture id and its references to 16 bits. |
128 void UnwrapPictureIds(RtpFrameObject* frame) EXCLUSIVE_LOCKS_REQUIRED(crit_); | 127 void UnwrapPictureIds(RtpFrameObject* frame) EXCLUSIVE_LOCKS_REQUIRED(crit_); |
129 // All picture ids are unwrapped to 16 bits. | |
130 uint16_t UnwrapPictureId(uint16_t picture_id) EXCLUSIVE_LOCKS_REQUIRED(crit_); | |
131 | 128 |
132 // Returns true if the frame is old and should be dropped. | 129 // Returns true if the frame is old and should be dropped. |
133 // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be | 130 // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be |
134 // around M59). | 131 // around M59). |
135 bool Vp9PidTl0Fix(const RtpFrameObject& frame, | 132 bool Vp9PidTl0Fix(const RtpFrameObject& frame, |
136 int16_t* picture_id, | 133 int16_t* picture_id, |
137 int16_t* tl0_pic_idx) EXCLUSIVE_LOCKS_REQUIRED(crit_); | 134 int16_t* tl0_pic_idx) EXCLUSIVE_LOCKS_REQUIRED(crit_); |
138 | 135 |
139 // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be | 136 // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be |
140 // around M59). | 137 // around M59). |
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207 std::array<std::set<uint16_t, DescendingSeqNumComp<uint16_t, kPicIdLength>>, | 204 std::array<std::set<uint16_t, DescendingSeqNumComp<uint16_t, kPicIdLength>>, |
208 kMaxTemporalLayers> | 205 kMaxTemporalLayers> |
209 missing_frames_for_layer_ GUARDED_BY(crit_); | 206 missing_frames_for_layer_ GUARDED_BY(crit_); |
210 | 207 |
211 // How far frames have been cleared by sequence number. A frame will be | 208 // How far frames have been cleared by sequence number. A frame will be |
212 // cleared if it contains a packet with a sequence number older than | 209 // cleared if it contains a packet with a sequence number older than |
213 // |cleared_to_seq_num_|. | 210 // |cleared_to_seq_num_|. |
214 int cleared_to_seq_num_ GUARDED_BY(crit_); | 211 int cleared_to_seq_num_ GUARDED_BY(crit_); |
215 | 212 |
216 OnCompleteFrameCallback* frame_callback_; | 213 OnCompleteFrameCallback* frame_callback_; |
| 214 |
| 215 // Unwrapper used to unwrap generic RTP streams. In a generic stream we derive |
| 216 // a picture id from the packet sequence number. |
| 217 SeqNumUnwrapper<uint16_t> generic_unwrapper_ GUARDED_BY(crit_); |
| 218 |
| 219 // Unwrapper used to unwrap VP8/VP9 streams which have their picture id |
| 220 // specified. |
| 221 SeqNumUnwrapper<uint16_t, kPicIdLength> unwrapper_ GUARDED_BY(crit_); |
217 }; | 222 }; |
218 | 223 |
219 } // namespace video_coding | 224 } // namespace video_coding |
220 } // namespace webrtc | 225 } // namespace webrtc |
221 | 226 |
222 #endif // WEBRTC_MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_ | 227 #endif // WEBRTC_MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_ |
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