216790 2020-09-21 10:54:45 -0700 AudioParam.exponentialRampToValueAtTime() does not properly deal with negative values 2020-09-21 14:40:56 -0700 1 1 1 Unclassified WebKit Web Audio WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://www.w3.org/TR/webaudio/#dom-audioparam-exponentialramptovalueattime InRadar P2 Normal --- 216788 212611 1 cdumez cdumez darin eric.carlson ggaren jer.noble webkit-bug-importer youennf oldest_to_newest 1690349 0 cdumez 2020-09-21 10:54:45 -0700 AudioParam.exponentialRampToValueAtTime() does not properly deal with negative values. The specification [1] says: "If V0 and V1 have opposite signs or if V0 is zero, then v(t) = V0 for T0 <= t < T1." Our implementation did not match the specification and would just special-case if either V0 or V1 was negative. [1] https://www.w3.org/TR/webaudio/#dom-audioparam-exponentialramptovalueattime 1690351 1 409284 cdumez 2020-09-21 10:59:13 -0700 Created attachment 409284 Patch 1690511 2 cdumez 2020-09-21 14:17:52 -0700 Committed r267367: <https://trac.webkit.org/changeset/267367> 1690512 3 webkit-bug-importer 2020-09-21 14:18:20 -0700 <rdar://problem/69327008> 409284 2020-09-21 10:59:13 -0700 2020-09-21 14:40:56 -0700 Patch bug-216790-20200921105912.patch text/plain 6541 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjY3MzE2CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggM2NkODEzYmE5OWQ0ZTM5 NGUzMGQxOGQ2NjdkNDAxMmZhNmU5MTE4Zi4uYmE3YmUxNzRmNzFhZmM2ZmFiOGQ5Y2ExZWQ1MjQ5 YmI3ZTZjMWFkZiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDI0IEBACisyMDIwLTA5LTIxICBDaHJp cyBEdW1leiAgPGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgQXVkaW9QYXJhbS5leHBvbmVu dGlhbFJhbXBUb1ZhbHVlQXRUaW1lKCkgZG9lcyBub3QgcHJvcGVybHkgZGVhbCB3aXRoIG5lZ2F0 aXZlIHZhbHVlcworICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/ aWQ9MjE2NzkwCisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAg ICAgQXVkaW9QYXJhbS5leHBvbmVudGlhbFJhbXBUb1ZhbHVlQXRUaW1lKCkgZG9lcyBub3QgcHJv cGVybHkgZGVhbCB3aXRoIG5lZ2F0aXZlIHZhbHVlcy4KKyAgICAgICAgVGhlIHNwZWNpZmljYXRp b24gWzFdIHNheXM6CisgICAgICAgICJJZiBWMCBhbmQgVjEgaGF2ZSBvcHBvc2l0ZSBzaWducyBv ciBpZiBWMCBpcyB6ZXJvLCB0aGVuIHYodCkgPSBWMCBmb3IgVDAgPD0gdCA8IFQxLiIKKworICAg ICAgICBPdXIgaW1wbGVtZW50YXRpb24gZGlkIG5vdCBtYXRjaCB0aGUgc3BlY2lmaWNhdGlvbiBh bmQgd291bGQganVzdCBzcGVjaWFsLWNhc2UgaWYgZWl0aGVyCisgICAgICAgIFYwIG9yIFYxIHdh cyBuZWdhdGl2ZS4KKworICAgICAgICBbMV0gaHR0cHM6Ly93d3cudzMub3JnL1RSL3dlYmF1ZGlv LyNkb20tYXVkaW9wYXJhbS1leHBvbmVudGlhbHJhbXB0b3ZhbHVlYXR0aW1lCisKKyAgICAgICAg Tm8gbmV3IHRlc3RzLCByZWJhc2VsaW5lZCBleGlzdGluZyB0ZXN0LgorCisgICAgICAgICogTW9k dWxlcy93ZWJhdWRpby9BdWRpb1BhcmFtVGltZWxpbmUuY3BwOgorICAgICAgICAoV2ViQ29yZTo6 QXVkaW9QYXJhbVRpbWVsaW5lOjp2YWx1ZXNGb3JUaW1lUmFuZ2VJbXBsKToKKwogMjAyMC0wOS0y MSAgQ2hyaXMgRHVtZXogIDxjZHVtZXpAYXBwbGUuY29tPgogCiAgICAgICAgIFZlY3Rvcml6ZSBs aW5lYXJSYW1wVG9WYWx1ZUF0VGltZSBwcm9jZXNzaW5nIGluIEF1ZGlvUGFyYW1UaW1lbGluZQpk aWZmIC0tZ2l0IGEvU291cmNlL1dlYkNvcmUvTW9kdWxlcy93ZWJhdWRpby9BdWRpb1BhcmFtVGlt ZWxpbmUuY3BwIGIvU291cmNlL1dlYkNvcmUvTW9kdWxlcy93ZWJhdWRpby9BdWRpb1BhcmFtVGlt ZWxpbmUuY3BwCmluZGV4IDA2Yzg0YjBiYzUxZDI4ZTA2NTBlMmIzZGFjNjliN2FjY2NmYzEzN2Yu LjRiYmViMzU0MjNkZWQ1ZWZkYzMyNDY4MjYxODAyYzJmZThkODVhZDEgMTAwNjQ0Ci0tLSBhL1Nv dXJjZS9XZWJDb3JlL01vZHVsZXMvd2ViYXVkaW8vQXVkaW9QYXJhbVRpbWVsaW5lLmNwcAorKysg Yi9Tb3VyY2UvV2ViQ29yZS9Nb2R1bGVzL3dlYmF1ZGlvL0F1ZGlvUGFyYW1UaW1lbGluZS5jcHAK QEAgLTQyMCw4ICs0MjAsMTAgQEAgZmxvYXQgQXVkaW9QYXJhbVRpbWVsaW5lOjp2YWx1ZXNGb3JU aW1lUmFuZ2VJbXBsKHNpemVfdCBzdGFydEZyYW1lLCBzaXplX3QgZW5kRnIKICAgICAgICAgaWYg KG5leHRFdmVudFR5cGUgPT0gUGFyYW1FdmVudDo6TGluZWFyUmFtcFRvVmFsdWUpCiAgICAgICAg ICAgICBwcm9jZXNzTGluZWFyUmFtcCh2YWx1ZXMsIHdyaXRlSW5kZXgsIGZpbGxUb0ZyYW1lLCB2 YWx1ZSwgdmFsdWUxLCB2YWx1ZTIsIGRlbHRhVGltZSwgdGltZTEsIHNhbXBsaW5nUGVyaW9kLCBj dXJyZW50RnJhbWUpOwogICAgICAgICBlbHNlIGlmIChuZXh0RXZlbnRUeXBlID09IFBhcmFtRXZl bnQ6OkV4cG9uZW50aWFsUmFtcFRvVmFsdWUpIHsKLSAgICAgICAgICAgIGlmICh2YWx1ZTEgPD0g MCB8fCB2YWx1ZTIgPD0gMCkgewotICAgICAgICAgICAgICAgIC8vIEhhbmRsZSBuZWdhdGl2ZSB2 YWx1ZXMgZXJyb3IgY2FzZSBieSBwcm9wYWdhdGluZyBwcmV2aW91cyB2YWx1ZS4KKyAgICAgICAg ICAgIGlmICghdmFsdWUxIHx8IHZhbHVlMSAqIHZhbHVlMiA8IDApIHsKKyAgICAgICAgICAgICAg ICAvLyBQZXIgdGhlIHNwZWNpZmljYXRpb246CisgICAgICAgICAgICAgICAgLy8gSWYgdmFsdWUx IGFuZCB2YWx1ZTIgaGF2ZSBvcHBvc2l0ZSBzaWducyBvciBpZiB2YWx1ZTEgaXMgemVybywgdGhl biB2KHQpID0gdmFsdWUxIGZvciBUMCA8PSB0IDwgVDEuCisgICAgICAgICAgICAgICAgdmFsdWUg PSB2YWx1ZTE7CiAgICAgICAgICAgICAgICAgZm9yICg7IHdyaXRlSW5kZXggPCBmaWxsVG9GcmFt ZTsgKyt3cml0ZUluZGV4KQogICAgICAgICAgICAgICAgICAgICB2YWx1ZXNbd3JpdGVJbmRleF0g PSB2YWx1ZTsKICAgICAgICAgICAgIH0gZWxzZSB7CmRpZmYgLS1naXQgYS9MYXlvdXRUZXN0cy9D aGFuZ2VMb2cgYi9MYXlvdXRUZXN0cy9DaGFuZ2VMb2cKaW5kZXggMTQ0ZDJjZDE0NzU3MTIyMDc2 MjViYWVkYjYxZmI4NTU2ZjUwMDgzYS4uYTdlOTc5YTYyMzMyNzk4NTg3NGU2OTJjODA3YzljNDli Nzc0ODA5NiAxMDA2NDQKLS0tIGEvTGF5b3V0VGVzdHMvQ2hhbmdlTG9nCisrKyBiL0xheW91dFRl c3RzL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE0IEBACisyMDIwLTA5LTIxICBDaHJpcyBEdW1leiAg PGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgQXVkaW9QYXJhbS5leHBvbmVudGlhbFJhbXBU b1ZhbHVlQXRUaW1lKCkgZG9lcyBub3QgcHJvcGVybHkgZGVhbCB3aXRoIG5lZ2F0aXZlIHZhbHVl cworICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MjE2Nzkw CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAgUmViYXNl bGluZSB0ZXN0IHRoYXQgaXMgbm93IHBhc3NpbmcuCisKKyAgICAgICAgKiB3ZWJhdWRpby9BdWRp b1BhcmFtL2F1ZGlvcGFyYW0tbmVnYXRpdmUtZXhwb25lbnRpYWxSYW1wLWV4cGVjdGVkLnR4dDoK KwogMjAyMC0wOS0yMSAgQ2hyaXMgRHVtZXogIDxjZHVtZXpAYXBwbGUuY29tPgogCiAgICAgICAg IFZlY3Rvcml6ZSBsaW5lYXJSYW1wVG9WYWx1ZUF0VGltZSBwcm9jZXNzaW5nIGluIEF1ZGlvUGFy YW1UaW1lbGluZQpkaWZmIC0tZ2l0IGEvTGF5b3V0VGVzdHMvd2ViYXVkaW8vQXVkaW9QYXJhbS9h dWRpb3BhcmFtLW5lZ2F0aXZlLWV4cG9uZW50aWFsUmFtcC1leHBlY3RlZC50eHQgYi9MYXlvdXRU ZXN0cy93ZWJhdWRpby9BdWRpb1BhcmFtL2F1ZGlvcGFyYW0tbmVnYXRpdmUtZXhwb25lbnRpYWxS YW1wLWV4cGVjdGVkLnR4dAppbmRleCAxNjI5M2E1N2FhYmI2YWU3MDhhMDUzNmMyYmRlZTUwNzA5 NGRiYWI4Li5jNjlhZGE5NDhkNDgyMjVkNzI3Y2ExYzdjMzgzN2JmOGQ4OTYyNDE3IDEwMDY0NAot LS0gYS9MYXlvdXRUZXN0cy93ZWJhdWRpby9BdWRpb1BhcmFtL2F1ZGlvcGFyYW0tbmVnYXRpdmUt ZXhwb25lbnRpYWxSYW1wLWV4cGVjdGVkLnR4dAorKysgYi9MYXlvdXRUZXN0cy93ZWJhdWRpby9B dWRpb1BhcmFtL2F1ZGlvcGFyYW0tbmVnYXRpdmUtZXhwb25lbnRpYWxSYW1wLWV4cGVjdGVkLnR4 dApAQCAtNiw0MSArNiwxNyBAQCBQQVNTIEV4ZWN1dGluZyAicG9zaXRpdmUtZW5kIgogUEFTUyBF eGVjdXRpbmcgInByb3BhZ2F0ZSIgCiBQQVNTIEF1ZGl0IHJlcG9ydCAKIFBBU1MgPiBbYm90aCBu ZWdhdGl2ZSB2YWx1ZXNdICAKLUZBSUwgWCBOZWdhdGl2ZSBleHBvbmVudGlhbCByYW1wIGZyb20g LTEgdG8gLTIgZXhwZWN0ZWQgdG8gYmUgZXF1YWwgdG8gdGhlIGFycmF5IFstMSwtMS4wMDAxMTU1 MTM4MDE1NzQ3LC0xLjAwMDIzMTAyNzYwMzE0OTQsLTEuMDAwMzQ2NTQxNDA0NzI0MSwtMS4wMDA0 NjIwNTUyMDYyOTg4LC0xLjAwMDU3NzU2OTAwNzg3MzUsLTEuMDAwNjkzMjAyMDE4NzM3OCwtMS4w MDA4MDg4MzUwMjk2MDIsLTEuMDAwOTI0NDY4MDQwNDY2MywtMS4wMDEwNDAxMDEwNTEzMzA2LC0x LjAwMTE1NTczNDA2MjE5NDgsLTEuMDAxMjcxMzY3MDczMDU5LC0xLjAwMTM4NzAwMDA4MzkyMzMs LTEuMDAxNTAyNjMzMDk0Nzg3NiwtMS4wMDE2MTgyNjYxMDU2NTE5LC0xLjAwMTczNDAxODMyNTgw NTcuLi5dIGJ1dCBkaWZmZXJzIGluIDYwMDAgcGxhY2VzOgotCUluZGV4CUFjdHVhbAkJCUV4cGVj dGVkCi0JWzBdCTEuMDAwMDAwMDAwMDAwMDAwMGUrMAktMS4wMDAwMDAwMDAwMDAwMDAwZSswCi0J WzFdCTEuMDAwMDAwMDAwMDAwMDAwMGUrMAktMS4wMDAxMTU1MTM4MDE1NzQ3ZSswCi0JWzJdCTEu MDAwMDAwMDAwMDAwMDAwMGUrMAktMS4wMDAyMzEwMjc2MDMxNDk0ZSswCi0JWzNdCTEuMDAwMDAw MDAwMDAwMDAwMGUrMAktMS4wMDAzNDY1NDE0MDQ3MjQxZSswCi0JLi4uYW5kIDU5OTYgbW9yZSBl cnJvcnMuIGFzc2VydF90cnVlOiBleHBlY3RlZCB0cnVlIGdvdCBmYWxzZQotRkFJTCA8IFtib3Ro IG5lZ2F0aXZlIHZhbHVlc10gMSBvdXQgb2YgMSBhc3NlcnRpb25zIHdlcmUgZmFpbGVkLiBhc3Nl cnRfdHJ1ZTogZXhwZWN0ZWQgdHJ1ZSBnb3QgZmFsc2UKK1BBU1MgICBOZWdhdGl2ZSBleHBvbmVu dGlhbCByYW1wIGZyb20gLTEgdG8gLTIgaXMgaWRlbnRpY2FsIHRvIHRoZSBhcnJheSBbZXhwZWN0 ZWQgYXJyYXldLiAKK1BBU1MgPCBbYm90aCBuZWdhdGl2ZSB2YWx1ZXNdIEFsbCBhc3NlcnRpb25z IHBhc3NlZC4gKHRvdGFsIDEgYXNzZXJ0aW9ucykgCiBQQVNTID4gW25lZ2F0aXZlLWVuZF0gIAot RkFJTCBYIEV4cG9uZW50aWFsIHJhbXAgZnJvbSAyIHRvIC0xOiBFeHBlY3RlZCAyIGZvciBhbGwg dmFsdWVzIGJ1dCBmb3VuZCA2MDAwIHVuZXhwZWN0ZWQgdmFsdWVzOiAKLQlJbmRleAlBY3R1YWwK LQlbMF0JMQotCVsxXQkxCi0JWzJdCTEKLQlbM10JMQotCS4uLmFuZCA1OTk2IG1vcmUgZXJyb3Jz LiBhc3NlcnRfdHJ1ZTogZXhwZWN0ZWQgdHJ1ZSBnb3QgZmFsc2UKLUZBSUwgPCBbbmVnYXRpdmUt ZW5kXSAxIG91dCBvZiAxIGFzc2VydGlvbnMgd2VyZSBmYWlsZWQuIGFzc2VydF90cnVlOiBleHBl Y3RlZCB0cnVlIGdvdCBmYWxzZQorUEFTUyAgIEV4cG9uZW50aWFsIHJhbXAgZnJvbSAyIHRvIC0x IGNvbnRhaW5zIG9ubHkgdGhlIGNvbnN0YW50IDIuIAorUEFTUyA8IFtuZWdhdGl2ZS1lbmRdIEFs bCBhc3NlcnRpb25zIHBhc3NlZC4gKHRvdGFsIDEgYXNzZXJ0aW9ucykgCiBQQVNTID4gW3Bvc2l0 aXZlLWVuZF0gIAotRkFJTCBYIEV4cG9uZW50aWFsIHJhbXAgZnJvbSAtMSB0byAxOiBFeHBlY3Rl ZCAtMSBmb3IgYWxsIHZhbHVlcyBidXQgZm91bmQgNjAwMCB1bmV4cGVjdGVkIHZhbHVlczogCi0J SW5kZXgJQWN0dWFsCi0JWzBdCTEKLQlbMV0JMQotCVsyXQkxCi0JWzNdCTEKLQkuLi5hbmQgNTk5 NiBtb3JlIGVycm9ycy4gYXNzZXJ0X3RydWU6IGV4cGVjdGVkIHRydWUgZ290IGZhbHNlCi1GQUlM IDwgW3Bvc2l0aXZlLWVuZF0gMSBvdXQgb2YgMSBhc3NlcnRpb25zIHdlcmUgZmFpbGVkLiBhc3Nl cnRfdHJ1ZTogZXhwZWN0ZWQgdHJ1ZSBnb3QgZmFsc2UKK1BBU1MgICBFeHBvbmVudGlhbCByYW1w IGZyb20gLTEgdG8gMSBjb250YWlucyBvbmx5IHRoZSBjb25zdGFudCAtMS4gCitQQVNTIDwgW3Bv c2l0aXZlLWVuZF0gQWxsIGFzc2VydGlvbnMgcGFzc2VkLiAodG90YWwgMSBhc3NlcnRpb25zKSAK IFBBU1MgPiBbcHJvcGFnYXRlXSAgCi1GQUlMIFggRXhwb25lbnRpYWwgcmFtcCBmcm9tIC0xIHRv IDEgYWZ0ZXIgdGhlIGVuZCBvZiB0aGUgbGluZWFyIHJhbXA6IEV4cGVjdGVkIC0xIGZvciBhbGwg dmFsdWVzIGJ1dCBmb3VuZCAxNTAwIHVuZXhwZWN0ZWQgdmFsdWVzOiAKLQlJbmRleAlBY3R1YWwK LQlbMF0JLTAuOTk4MDAwMTQ0OTU4NDk2MQotCVsxXQktMC45OTgwMDAxNDQ5NTg0OTYxCi0JWzJd CS0wLjk5ODAwMDE0NDk1ODQ5NjEKLQlbM10JLTAuOTk4MDAwMTQ0OTU4NDk2MQotCS4uLmFuZCAx NDk2IG1vcmUgZXJyb3JzLiBhc3NlcnRfdHJ1ZTogZXhwZWN0ZWQgdHJ1ZSBnb3QgZmFsc2UKK1BB U1MgICBFeHBvbmVudGlhbCByYW1wIGZyb20gLTEgdG8gMSBhZnRlciB0aGUgZW5kIG9mIHRoZSBs aW5lYXIgcmFtcCBjb250YWlucyBvbmx5IHRoZSBjb25zdGFudCAtMS4gCiBQQVNTICAgRXhwb25l bnRpYWwgcmFtcCBhZnRlciBlbmQgb2YgcmFtcCBjb250YWlucyBvbmx5IHRoZSBjb25zdGFudCAx LiAKLUZBSUwgPCBbcHJvcGFnYXRlXSAxIG91dCBvZiAyIGFzc2VydGlvbnMgd2VyZSBmYWlsZWQu IGFzc2VydF90cnVlOiBleHBlY3RlZCB0cnVlIGdvdCBmYWxzZQotRkFJTCAjIEFVRElUIFRBU0sg UlVOTkVSIEZJTklTSEVEOiA0IG91dCBvZiA0IHRhc2tzIHdlcmUgZmFpbGVkLiBhc3NlcnRfdHJ1 ZTogZXhwZWN0ZWQgdHJ1ZSBnb3QgZmFsc2UKK1BBU1MgPCBbcHJvcGFnYXRlXSBBbGwgYXNzZXJ0 aW9ucyBwYXNzZWQuICh0b3RhbCAyIGFzc2VydGlvbnMpIAorUEFTUyAjIEFVRElUIFRBU0sgUlVO TkVSIEZJTklTSEVEOiA0IHRhc2tzIHJhbiBzdWNjZXNzZnVsbHkuIAogCg==