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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 #include "cc/output/begin_frame_args.h" | |
| 6 | |
| 7 #include "base/trace_event/trace_event_argument.h" | |
| 8 #include "ui/gfx/frame_time.h" | |
| 9 | |
| 10 namespace cc { | |
| 11 | |
| 12 const char* BeginFrameArgs::TypeToString(BeginFrameArgsType type) { | |
| 13 switch (type) { | |
| 14 case BeginFrameArgs::INVALID: | |
| 15 return "INVALID"; | |
| 16 case BeginFrameArgs::NORMAL: | |
| 17 return "NORMAL"; | |
| 18 case BeginFrameArgs::SYNCHRONOUS: | |
| 19 return "SYNCHRONOUS"; | |
| 20 case BeginFrameArgs::MISSED: | |
| 21 return "MISSED"; | |
| 22 case BeginFrameArgs::BEGIN_FRAME_ARGS_TYPE_MAX: | |
| 23 return "BEGIN_FRAME_ARGS_TYPE_MAX"; | |
| 24 } | |
| 25 NOTREACHED(); | |
| 26 return "???"; | |
| 27 } | |
| 28 | |
| 29 BeginFrameArgs::BeginFrameArgs() | |
| 30 : frame_time(base::TimeTicks()), | |
| 31 deadline(base::TimeTicks()), | |
| 32 interval(base::TimeDelta::FromMicroseconds(-1)), | |
| 33 type(BeginFrameArgs::INVALID) { | |
| 34 } | |
| 35 | |
| 36 BeginFrameArgs::BeginFrameArgs(base::TimeTicks frame_time, | |
| 37 base::TimeTicks deadline, | |
| 38 base::TimeDelta interval, | |
| 39 BeginFrameArgs::BeginFrameArgsType type) | |
| 40 : frame_time(frame_time), | |
| 41 deadline(deadline), | |
| 42 interval(interval), | |
| 43 type(type) { | |
| 44 } | |
| 45 | |
| 46 BeginFrameArgs BeginFrameArgs::Create(BeginFrameArgs::CreationLocation location, | |
| 47 base::TimeTicks frame_time, | |
| 48 base::TimeTicks deadline, | |
| 49 base::TimeDelta interval, | |
| 50 BeginFrameArgs::BeginFrameArgsType type) { | |
| 51 DCHECK_NE(type, BeginFrameArgs::INVALID); | |
| 52 DCHECK_NE(type, BeginFrameArgs::BEGIN_FRAME_ARGS_TYPE_MAX); | |
| 53 #ifdef NDEBUG | |
| 54 return BeginFrameArgs(frame_time, deadline, interval, type); | |
| 55 #else | |
| 56 BeginFrameArgs args = BeginFrameArgs(frame_time, deadline, interval, type); | |
| 57 args.created_from = location; | |
| 58 return args; | |
| 59 #endif | |
| 60 } | |
| 61 | |
| 62 scoped_refptr<base::trace_event::ConvertableToTraceFormat> | |
| 63 BeginFrameArgs::AsValue() const { | |
| 64 scoped_refptr<base::trace_event::TracedValue> state = | |
| 65 new base::trace_event::TracedValue(); | |
| 66 AsValueInto(state.get()); | |
| 67 return state; | |
| 68 } | |
| 69 | |
| 70 void BeginFrameArgs::AsValueInto(base::trace_event::TracedValue* state) const { | |
| 71 state->SetString("type", "BeginFrameArgs"); | |
| 72 state->SetString("subtype", TypeToString(type)); | |
| 73 state->SetDouble("frame_time_us", frame_time.ToInternalValue()); | |
| 74 state->SetDouble("deadline_us", deadline.ToInternalValue()); | |
| 75 state->SetDouble("interval_us", interval.InMicroseconds()); | |
| 76 #ifndef NDEBUG | |
| 77 state->SetString("created_from", created_from.ToString()); | |
| 78 #endif | |
| 79 } | |
| 80 | |
| 81 // This is a hard-coded deadline adjustment that assumes 60Hz, to be used in | |
| 82 // cases where a good estimated draw time is not known. Using 1/3 of the vsync | |
| 83 // as the default adjustment gives the Browser the last 1/3 of a frame to | |
| 84 // produce output, the Renderer Impl thread the middle 1/3 of a frame to produce | |
| 85 // ouput, and the Renderer Main thread the first 1/3 of a frame to produce | |
| 86 // output. | |
| 87 base::TimeDelta BeginFrameArgs::DefaultEstimatedParentDrawTime() { | |
| 88 return base::TimeDelta::FromMicroseconds(16666 / 3); | |
| 89 } | |
| 90 | |
| 91 base::TimeDelta BeginFrameArgs::DefaultInterval() { | |
| 92 return base::TimeDelta::FromMicroseconds(16666); | |
| 93 } | |
| 94 | |
| 95 } // namespace cc | |
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