| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../resources/js-test.js"></script> |
| <script src="resources/compatibility.js"></script> |
| </head> |
| <body> |
| <script> |
| description("Tests the OfflineAudioContext constructor"); |
| |
| var context; |
| // Make sure we don't crash when giving 0 as number of frames. |
| shouldThrow("new OfflineAudioContext(1, 0, 44100)"); |
| // Make sure we don't throw exceptions for supported ranges of sample rates for an OfflineAudioContext. |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 3000)"); |
| shouldBeEqualToNumber("context.length", 512); |
| shouldNotThrow("context = new OfflineAudioContext(2, 1024, 192000)"); |
| shouldBeEqualToNumber("context.length", 1024); |
| shouldNotThrow("context = new OfflineAudioContext(2, 2048, 8000)"); |
| shouldBeEqualToNumber("context.length", 2048); |
| shouldNotThrow("context = new OfflineAudioContext(2, 4096, 11025)"); |
| shouldBeEqualToNumber("context.length", 4096); |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 22050)"); |
| shouldBeEqualToNumber("context.length", 512); |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 44100)"); |
| shouldBeEqualToNumber("context.length", 512); |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 48000)"); |
| shouldBeEqualToNumber("context.length", 512); |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 88200)"); |
| shouldBeEqualToNumber("context.length", 512); |
| // Make sure length is read-only. |
| shouldNotThrow("context.length = 99"); |
| shouldBeEqualToNumber("context.length", 512); |
| shouldNotThrow("context = new OfflineAudioContext(2, 512, 96000)"); |
| // Make sure we throw exceptions for non-finite sample rates. |
| shouldThrow("context = new OfflineAudioContext(1, 0, NaN)"); |
| shouldThrow("context = new OfflineAudioContext(1, 0, Infinity)"); |
| // Verify channel counts and other destination attributes are set correctly. |
| shouldNotThrow("context = new OfflineAudioContext(7, 512, 48000)"); |
| shouldBeEqualToNumber("context.destination.channelCount", 7); |
| shouldBeEqualToNumber("context.destination.maxChannelCount", 7); |
| shouldBeEqualToString("context.destination.channelCountMode", "explicit"); |
| shouldBeEqualToString("context.destination.channelInterpretation", "speakers"); |
| </script> |
| </body> |
| </html> |
