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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 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 MEDIA_CAST_CAST_DEFINES_H_ | 5 #ifndef MEDIA_CAST_CAST_DEFINES_H_ |
| 6 #define MEDIA_CAST_CAST_DEFINES_H_ | 6 #define MEDIA_CAST_CAST_DEFINES_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include <cmath> | 10 #include <cmath> |
| 11 #include <map> | 11 #include <map> |
| 12 #include <set> | 12 #include <set> |
| 13 | 13 |
| 14 #include "base/basictypes.h" | 14 #include "base/basictypes.h" |
| 15 #include "base/compiler_specific.h" | 15 #include "base/compiler_specific.h" |
| 16 #include "base/logging.h" | 16 #include "base/logging.h" |
| 17 #include "base/time/time.h" | 17 #include "base/time/time.h" |
| 18 #include "media/cast/net/cast_transport_config.h" | 18 #include "media/cast/net/cast_transport_config.h" |
| 19 | 19 |
| 20 namespace media { | 20 namespace media { |
| 21 namespace cast { | 21 namespace cast { |
| 22 | 22 |
| 23 const int64 kDontShowTimeoutMs = 33; | |
| 24 const float kDefaultCongestionControlBackOff = 0.875f; | |
| 25 const uint32 kVideoFrequency = 90000; | 23 const uint32 kVideoFrequency = 90000; |
| 24 const int kMinSampleRateForEncoding = 8000; |
| 26 const uint32 kStartFrameId = UINT32_C(0xffffffff); | 25 const uint32 kStartFrameId = UINT32_C(0xffffffff); |
| 27 | 26 |
| 28 // This is an important system-wide constant. This limits how much history the | 27 // This is an important system-wide constant. This limits how much history the |
| 29 // implementation must retain in order to process the acknowledgements of past | 28 // implementation must retain in order to process the acknowledgements of past |
| 30 // frames. | 29 // frames. |
| 31 // This value is carefully choosen such that it fits in the 8-bits range for | 30 // This value is carefully choosen such that it fits in the 8-bits range for |
| 32 // frame IDs. It is also less than half of the full 8-bits range such that we | 31 // frame IDs. It is also less than half of the full 8-bits range such that we |
| 33 // can handle wrap around and compare two frame IDs. | 32 // can handle wrap around and compare two frame IDs. |
| 34 const int kMaxUnackedFrames = 120; | 33 const int kMaxUnackedFrames = 120; |
| 35 | 34 |
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| 212 | 211 |
| 213 inline int64 TimeDeltaToRtpDelta(base::TimeDelta delta, int rtp_timebase) { | 212 inline int64 TimeDeltaToRtpDelta(base::TimeDelta delta, int rtp_timebase) { |
| 214 DCHECK_GT(rtp_timebase, 0); | 213 DCHECK_GT(rtp_timebase, 0); |
| 215 return delta * rtp_timebase / base::TimeDelta::FromSeconds(1); | 214 return delta * rtp_timebase / base::TimeDelta::FromSeconds(1); |
| 216 } | 215 } |
| 217 | 216 |
| 218 } // namespace cast | 217 } // namespace cast |
| 219 } // namespace media | 218 } // namespace media |
| 220 | 219 |
| 221 #endif // MEDIA_CAST_CAST_DEFINES_H_ | 220 #endif // MEDIA_CAST_CAST_DEFINES_H_ |
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