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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 #ifndef MEDIA_CAST_NET_CAST_NET_DEFINES_H_ | |
| 6 #define MEDIA_CAST_NET_CAST_NET_DEFINES_H_ | |
| 7 | |
| 8 #include <list> | |
| 9 #include "base/basictypes.h" | |
| 10 | |
| 11 namespace media { | |
| 12 namespace cast { | |
| 13 | |
| 14 // Rtcp defines. | |
| 15 | |
| 16 // Log messages form sender to receiver. | |
| 17 enum RtcpSenderFrameStatus { | |
| 18 kRtcpSenderFrameStatusUnknown = 0, | |
| 19 kRtcpSenderFrameStatusDroppedByEncoder = 1, | |
| 20 kRtcpSenderFrameStatusDroppedByFlowControl = 2, | |
| 21 kRtcpSenderFrameStatusSentToNetwork = 3, | |
| 22 }; | |
| 23 | |
| 24 struct RtcpSenderFrameLogMessage { | |
| 25 RtcpSenderFrameStatus frame_status; | |
| 26 uint32 rtp_timestamp; | |
| 27 }; | |
| 28 | |
| 29 struct RtcpSenderInfo { | |
| 30 // First three members are used for lipsync. | |
| 31 // First two members are used for rtt. | |
| 32 uint32 ntp_seconds; | |
| 33 uint32 ntp_fraction; | |
| 34 uint32 rtp_timestamp; | |
| 35 uint32 send_packet_count; | |
| 36 size_t send_octet_count; | |
| 37 }; | |
| 38 | |
| 39 struct RtcpReportBlock { | |
| 40 uint32 remote_ssrc; // SSRC of sender of this report. | |
| 41 uint32 media_ssrc; // SSRC of the RTP packet sender. | |
| 42 uint8 fraction_lost; | |
| 43 uint32 cumulative_lost; // 24 bits valid. | |
| 44 uint32 extended_high_sequence_number; | |
| 45 uint32 jitter; | |
| 46 uint32 last_sr; | |
| 47 uint32 delay_since_last_sr; | |
| 48 }; | |
| 49 | |
| 50 struct RtcpDlrrReportBlock { | |
| 51 uint32 last_rr; | |
| 52 uint32 delay_since_last_rr; | |
| 53 }; | |
| 54 | |
| 55 typedef std::list<RtcpSenderFrameLogMessage> RtcpSenderLogMessage; | |
| 56 | |
| 57 class FrameIdWrapHelper { | |
| 58 public: | |
| 59 FrameIdWrapHelper() | |
| 60 : first_(true), | |
| 61 frame_id_wrap_count_(0), | |
| 62 range_(kLowRange) {} | |
| 63 | |
| 64 uint32 MapTo32bitsFrameId(const uint8 over_the_wire_frame_id) { | |
| 65 if (first_) { | |
| 66 first_ = false; | |
| 67 if (over_the_wire_frame_id == 0xff) { | |
| 68 // Special case for startup. | |
| 69 return kStartFrameId; | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 uint32 wrap_count = frame_id_wrap_count_; | |
| 74 switch (range_) { | |
| 75 case kLowRange: | |
| 76 if (over_the_wire_frame_id > kLowRangeThreshold && | |
| 77 over_the_wire_frame_id < kHighRangeThreshold) { | |
| 78 range_ = kMiddleRange; | |
| 79 } | |
| 80 if (over_the_wire_frame_id > kHighRangeThreshold) { | |
| 81 // Wrap count was incremented in High->Low transition, but this frame | |
| 82 // is 'old', actually from before the wrap count got incremented. | |
| 83 --wrap_count; | |
| 84 } | |
| 85 break; | |
| 86 case kMiddleRange: | |
| 87 if (over_the_wire_frame_id > kHighRangeThreshold) { | |
| 88 range_ = kHighRange; | |
| 89 } | |
| 90 break; | |
| 91 case kHighRange: | |
| 92 if (over_the_wire_frame_id < kLowRangeThreshold) { | |
| 93 // Wrap-around detected. | |
| 94 range_ = kLowRange; | |
| 95 ++frame_id_wrap_count_; | |
| 96 // Frame triggering wrap-around so wrap count should be incremented as | |
| 97 // as well to match |frame_id_wrap_count_|. | |
| 98 ++wrap_count; | |
| 99 } | |
| 100 break; | |
| 101 } | |
| 102 return (wrap_count << 8) + over_the_wire_frame_id; | |
| 103 } | |
| 104 | |
| 105 private: | |
| 106 enum Range { | |
| 107 kLowRange, | |
| 108 kMiddleRange, | |
| 109 kHighRange, | |
| 110 }; | |
| 111 | |
| 112 static const uint8 kLowRangeThreshold = 0x0f; | |
| 113 static const uint8 kHighRangeThreshold = 0xf0; | |
| 114 static const uint32 kStartFrameId = GG_UINT32_C(0xffffffff); | |
| 115 | |
| 116 bool first_; | |
| 117 uint32 frame_id_wrap_count_; | |
| 118 Range range_; | |
| 119 }; | |
| 120 | |
| 121 } // namespace cast | |
| 122 } // namespace media | |
| 123 | |
| 124 #endif // MEDIA_CAST_NET_CAST_NET_DEFINES_H_ | |
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Chromium Code Reviews
Issue 100823015:
Cast: move net->transport (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src