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Side by Side Diff: media/cast/cast_defines.h

Issue 1337243003: Extracted hardcoded constants from cast_rtp_stream. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 3 months ago
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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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