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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 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 are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * 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 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 59 private: | 59 private: |
| 60 MessageValidator(Uint8Array* array) | 60 MessageValidator(Uint8Array* array) |
| 61 : m_data(array->data()) | 61 : m_data(array->data()) |
| 62 , m_length(array->length()) | 62 , m_length(array->length()) |
| 63 , m_offset(0) { } | 63 , m_offset(0) { } |
| 64 | 64 |
| 65 bool process(ExceptionState& exceptionState, bool sysExEnabled) | 65 bool process(ExceptionState& exceptionState, bool sysExEnabled) |
| 66 { | 66 { |
| 67 while (!isEndOfData() && acceptRealTimeMessages()) { | 67 while (!isEndOfData() && acceptRealTimeMessages()) { |
| 68 if (!isStatusByte()) { | 68 if (!isStatusByte()) { |
| 69 exceptionState.throwDOMException(TypeError, "Running status is n
ot allowed " + getPositionString()); | 69 exceptionState.throwTypeError("Running status is not allowed " +
getPositionString()); |
| 70 return false; | 70 return false; |
| 71 } | 71 } |
| 72 if (isEndOfSysEx()) { | 72 if (isEndOfSysEx()) { |
| 73 exceptionState.throwDOMException(TypeError, "Unexpected end of s
ystem exclusive message " + getPositionString()); | 73 exceptionState.throwTypeError("Unexpected end of system exclusiv
e message " + getPositionString()); |
| 74 return false; | 74 return false; |
| 75 } | 75 } |
| 76 if (isReservedStatusByte()) { | 76 if (isReservedStatusByte()) { |
| 77 exceptionState.throwDOMException(TypeError, "Reserved status is
not allowed " + getPositionString()); | 77 exceptionState.throwTypeError("Reserved status is not allowed "
+ getPositionString()); |
| 78 return false; | 78 return false; |
| 79 } | 79 } |
| 80 if (isSysEx()) { | 80 if (isSysEx()) { |
| 81 if (!sysExEnabled) { | 81 if (!sysExEnabled) { |
| 82 exceptionState.throwDOMException(InvalidAccessError, "System
exclusive message is not allowed " + getPositionString()); | 82 exceptionState.throwDOMException(InvalidAccessError, "System
exclusive message is not allowed " + getPositionString()); |
| 83 return false; | 83 return false; |
| 84 } | 84 } |
| 85 if (!acceptCurrentSysEx()) { | 85 if (!acceptCurrentSysEx()) { |
| 86 if (isEndOfData()) | 86 if (isEndOfData()) |
| 87 exceptionState.throwDOMException(TypeError, "System excl
usive message is not ended by end of system exclusive message."); | 87 exceptionState.throwTypeError("System exclusive message
is not ended by end of system exclusive message."); |
| 88 else | 88 else |
| 89 exceptionState.throwDOMException(TypeError, "System excl
usive message contains a status byte " + getPositionString()); | 89 exceptionState.throwTypeError("System exclusive message
contains a status byte " + getPositionString()); |
| 90 return false; | 90 return false; |
| 91 } | 91 } |
| 92 } else { | 92 } else { |
| 93 if (!acceptCurrentMessage()) { | 93 if (!acceptCurrentMessage()) { |
| 94 if (isEndOfData()) | 94 if (isEndOfData()) |
| 95 exceptionState.throwDOMException(TypeError, "Message is
incomplete."); | 95 exceptionState.throwTypeError("Message is incomplete."); |
| 96 else | 96 else |
| 97 exceptionState.throwDOMException(TypeError, "Unexpected
status byte at index " + getPositionString()); | 97 exceptionState.throwTypeError("Unexpected status byte at
index " + getPositionString()); |
| 98 return false; | 98 return false; |
| 99 } | 99 } |
| 100 } | 100 } |
| 101 } | 101 } |
| 102 return true; | 102 return true; |
| 103 } | 103 } |
| 104 | 104 |
| 105 private: | 105 private: |
| 106 bool isEndOfData() { return m_offset >= m_length; } | 106 bool isEndOfData() { return m_offset >= m_length; } |
| 107 bool isSysEx() { return m_data[m_offset] == 0xf0; } | 107 bool isSysEx() { return m_data[m_offset] == 0xf0; } |
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| 204 | 204 |
| 205 void MIDIOutput::send(Vector<unsigned> unsignedData, double timestamp, Exception
State& exceptionState) | 205 void MIDIOutput::send(Vector<unsigned> unsignedData, double timestamp, Exception
State& exceptionState) |
| 206 { | 206 { |
| 207 if (timestamp == 0.0) | 207 if (timestamp == 0.0) |
| 208 timestamp = now(executionContext()); | 208 timestamp = now(executionContext()); |
| 209 | 209 |
| 210 RefPtr<Uint8Array> array = Uint8Array::create(unsignedData.size()); | 210 RefPtr<Uint8Array> array = Uint8Array::create(unsignedData.size()); |
| 211 | 211 |
| 212 for (size_t i = 0; i < unsignedData.size(); ++i) { | 212 for (size_t i = 0; i < unsignedData.size(); ++i) { |
| 213 if (unsignedData[i] > 0xff) { | 213 if (unsignedData[i] > 0xff) { |
| 214 exceptionState.throwDOMException(TypeError, "The value at index " +
String::number(i) + " (" + String::number(unsignedData[i]) + ") is greater than
0xFF."); | 214 exceptionState.throwTypeError("The value at index " + String::number
(i) + " (" + String::number(unsignedData[i]) + ") is greater than 0xFF."); |
| 215 return; | 215 return; |
| 216 } | 216 } |
| 217 unsigned char value = unsignedData[i] & 0xff; | 217 unsigned char value = unsignedData[i] & 0xff; |
| 218 array->set(i, value); | 218 array->set(i, value); |
| 219 } | 219 } |
| 220 | 220 |
| 221 send(array.get(), timestamp, exceptionState); | 221 send(array.get(), timestamp, exceptionState); |
| 222 } | 222 } |
| 223 | 223 |
| 224 void MIDIOutput::send(Uint8Array* data, ExceptionState& exceptionState) | 224 void MIDIOutput::send(Uint8Array* data, ExceptionState& exceptionState) |
| 225 { | 225 { |
| 226 send(data, 0.0, exceptionState); | 226 send(data, 0.0, exceptionState); |
| 227 } | 227 } |
| 228 | 228 |
| 229 void MIDIOutput::send(Vector<unsigned> unsignedData, ExceptionState& exceptionSt
ate) | 229 void MIDIOutput::send(Vector<unsigned> unsignedData, ExceptionState& exceptionSt
ate) |
| 230 { | 230 { |
| 231 send(unsignedData, 0.0, exceptionState); | 231 send(unsignedData, 0.0, exceptionState); |
| 232 } | 232 } |
| 233 | 233 |
| 234 void MIDIOutput::trace(Visitor* visitor) | 234 void MIDIOutput::trace(Visitor* visitor) |
| 235 { | 235 { |
| 236 MIDIPort::trace(visitor); | 236 MIDIPort::trace(visitor); |
| 237 } | 237 } |
| 238 | 238 |
| 239 } // namespace WebCore | 239 } // namespace WebCore |
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