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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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| 54 // be larger than least positive normalized single precision | 54 // be larger than least positive normalized single precision |
| 55 // value (1.1754944e-38) because we normally operate with flush-to-zero enabled. | 55 // value (1.1754944e-38) because we normally operate with flush-to-zero enabled. |
| 56 const float kSetTargetZeroThreshold = 1e-20; | 56 const float kSetTargetZeroThreshold = 1e-20; |
| 57 | 57 |
| 58 static bool IsNonNegativeAudioParamTime(double time, | 58 static bool IsNonNegativeAudioParamTime(double time, |
| 59 ExceptionState& exception_state, | 59 ExceptionState& exception_state, |
| 60 String message = "Time") { | 60 String message = "Time") { |
| 61 if (time >= 0) | 61 if (time >= 0) |
| 62 return true; | 62 return true; |
| 63 | 63 |
| 64 exception_state.ThrowDOMException( | 64 exception_state.ThrowRangeError( |
| 65 kInvalidAccessError, message + " must be a finite non-negative number: " + | 65 message + |
| 66 String::Number(time)); | 66 " must be a finite non-negative number: " + String::Number(time)); |
| 67 return false; | 67 return false; |
| 68 } | 68 } |
| 69 | 69 |
| 70 static bool IsPositiveAudioParamTime(double time, | 70 static bool IsPositiveAudioParamTime(double time, |
| 71 ExceptionState& exception_state, | 71 ExceptionState& exception_state, |
| 72 String message) { | 72 String message) { |
| 73 if (time > 0) | 73 if (time > 0) |
| 74 return true; | 74 return true; |
| 75 | 75 |
| 76 exception_state.ThrowDOMException( | 76 exception_state.ThrowRangeError( |
| 77 kInvalidAccessError, | |
| 78 message + " must be a finite positive number: " + String::Number(time)); | 77 message + " must be a finite positive number: " + String::Number(time)); |
| 79 return false; | 78 return false; |
| 80 } | 79 } |
| 81 | 80 |
| 82 String AudioParamTimeline::EventToString(const ParamEvent& event) { | 81 String AudioParamTimeline::EventToString(const ParamEvent& event) { |
| 83 // The default arguments for most automation methods is the value and the | 82 // The default arguments for most automation methods is the value and the |
| 84 // time. | 83 // time. |
| 85 String args = | 84 String args = |
| 86 String::Number(event.Value()) + ", " + String::Number(event.Time(), 16); | 85 String::Number(event.Value()) + ", " + String::Number(event.Time(), 16); |
| 87 | 86 |
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| 437 double time, | 436 double time, |
| 438 float initial_value, | 437 float initial_value, |
| 439 double call_time, | 438 double call_time, |
| 440 ExceptionState& exception_state) { | 439 ExceptionState& exception_state) { |
| 441 DCHECK(IsMainThread()); | 440 DCHECK(IsMainThread()); |
| 442 | 441 |
| 443 if (!IsNonNegativeAudioParamTime(time, exception_state)) | 442 if (!IsNonNegativeAudioParamTime(time, exception_state)) |
| 444 return; | 443 return; |
| 445 | 444 |
| 446 if (!value) { | 445 if (!value) { |
| 447 exception_state.ThrowDOMException( | 446 exception_state.ThrowRangeError( |
| 448 kInvalidAccessError, | |
| 449 "The float target value provided (" + String::Number(value) + | 447 "The float target value provided (" + String::Number(value) + |
| 450 ") should not be in the range (" + | 448 ") should not be in the range (" + |
| 451 String::Number(-std::numeric_limits<float>::denorm_min()) + ", " + | 449 String::Number(-std::numeric_limits<float>::denorm_min()) + ", " + |
| 452 String::Number(std::numeric_limits<float>::denorm_min()) + ")."); | 450 String::Number(std::numeric_limits<float>::denorm_min()) + ")."); |
| 453 return; | 451 return; |
| 454 } | 452 } |
| 455 | 453 |
| 456 MutexLocker locker(events_lock_); | 454 MutexLocker locker(events_lock_); |
| 457 InsertEvent(ParamEvent::CreateExponentialRampEvent(value, time, initial_value, | 455 InsertEvent(ParamEvent::CreateExponentialRampEvent(value, time, initial_value, |
| 458 call_time), | 456 call_time), |
| 459 exception_state); | 457 exception_state); |
| 460 } | 458 } |
| 461 | 459 |
| 462 void AudioParamTimeline::SetTargetAtTime(float target, | 460 void AudioParamTimeline::SetTargetAtTime(float target, |
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| 1775 unsigned write_index) { | 1773 unsigned write_index) { |
| 1776 size_t index = write_index; | 1774 size_t index = write_index; |
| 1777 | 1775 |
| 1778 for (; index < end_frame; ++index) | 1776 for (; index < end_frame; ++index) |
| 1779 values[index] = default_value; | 1777 values[index] = default_value; |
| 1780 | 1778 |
| 1781 return index; | 1779 return index; |
| 1782 } | 1780 } |
| 1783 | 1781 |
| 1784 } // namespace blink | 1782 } // namespace blink |
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