Hey everyone!
I think I finally got external sidechain working with hise plugins!! so far i've only tested in reaper and pro tools but it working in both daws!
You'll have to change some of the source code and recompile hise to get it working but if you want to try it out here are the locations I edited as well as photos of all the changes:
hi_core / LibConfig.h
hi_core / hi_core / MainController.cpp
hi_dsp / plugin_parameter / PluginParameterProcessor.h
hi_dsp / routing.cpp
Image Album with all the changes:
https://imgur.com/a/DhRZ0lR
simple comp project with sidechain routing:
HiseSnippet 1970.3oc6Z0saabbEdWRMzRxwN0IAs8xs.8BE.Wgc4ehB8hPQIw.hZISHpnlfdgyncGJNUKmgc2gRhsn.9x7XkGgBzWj7FzdlY1k6rTjzRzVNwAd8EVy4L+7c9e1yxtQbeRbLOxxdiSmLhXY+IndSXhA6O.SYVcNvxtHprUqIivwwj.Ka6hesjg8FqYod9oupENDy7IYjrrNiS8IufNjJxn1s4egFF1FGPNkNzX1Ua1wmy1mGxGGIOLWqQX+KwWPNFKmVAjkcoCCnBdTOAVPhsrWqEOXRuA7qY54eFMlddHQNvypGrQZxs4gARDKoZs+.ZXP2TgM1B1ztYhdQsn+EninAzozyTA+FECmrUXpOrKjGdEyAOOS34Z.u4.IaCHslFROC0yOhNRjwQhmGi5vDjn9XPsaBE8bsr+Qz9bXBLw1CwWRZGACltfsp559bmxtte4et+XlufxYNb1wbA4krs9xM+Watwl+6MclkU+9ykm7Xh3ggjn4xVZoiV1B2hMd34jnm6bENbLY5DAwOuNEsXcpoI2WK0FSjy5vnhWNhvVjifUhpBz+ERPELUgR6+zDseuPZ.IxhBJ4OMGIOKEvMCGrVzlzZrPvY41DMoasIvy2z4.r.K8IRfG.4QjHAUpMrOfbEDfo8P1.c.I9RAeDnz1mObDmIEF60uyRvMlG7DyAWSCDCxH7cMGPnWLPXRYTplrSfJ0gZmcZ+sdPTbDD.CNcRNOF0McnTguHTtDUTFJeMtYFJ+wyalGkM+9agxN2UTtNp020cud8lGDeRxpdA9bRnBgO0jRN03AF.70+sY.32GeK.dPSA4FX7e.0RvbDbGOm97HGfFIhgCchACkuJYDAhJvSSlb+gY4EYse8YovDYyfwoPDYuELRCuOCc5fHR7.HupSh+zL3414ufLm7fwgXQ9zoxZHILf7A4xgISTwhohIlAUuyxwdWg3yPcoB+AyGiElCFkoOd.vXRkomfNreehuHCfqgZ+su+JCsYhSDblxCOWHz7J.8Cnrj8ihHPTF4Td2P7jshwCGERNAv3ycNOj6eYO5+jb6JDIQrsjyXKv2mwHgwqRgjR2Ysh2xMJmvGKnrKNBKhnxfniGOrGbkEex9InSFrHcFRF6JGK8K5QXApA+O3IgombrcBSuYXVVNtPByxyvrhbbwDlURYlUDy5Xh3ZdzkJCYxeCyRZ0Pn+d3kVmQhhk9y1OB4tM7Oq8BC4WKyjPS7zA6nhVWd3jQC3LpujjdFoR6dC4iYhTfZW3Xd.nDK0F6CJ6IcwxLIOCIqGCNrjns8m53pQQlSixcDLHSKPDqMFxcL8VgZEIffgpbcx6DVTxWKjpiVIgOBMbbnfZsPXnYm+vuqGTgbGjVfdCx6pcP4kn3Qgv0nW3AoY+1KQqqknpOLhTQiS5InXdewqNWsQ4OtemofYLo2JwqTh3ERvvscxcdeBZH7+aqXMygX91CugCrfgqqL64za5Xu1QT1Y561gjQaVGguY5XOXr1DqIkahVF22yxxP6sAJh3SnWQl0PEoyOscJ66kN6sTD1D0lPBNGduMqb7xKElmQNNpJNxQP8zB55KchOSx0GGltiPhFC0PIvSY3n75fOEELggGR8i2Vw7doAVKqT+o3nKHh3jKeyH95rhJ2I40DQxrLYRijTpMTcirPxMoWd+.JDehmzZLT8VqZyQAF2gEPtQVN+O4kWCYulgUnTlUXcXltyZHji6IHijESkuGq61vbTOdU200yqNTb6Rx0Z0kk8mCVmJ0puqWspUaznV8cJWMott9Fdxq3Ys2XAGBOl9JzyGNy5T7HT4Z2SzHmP0Jt02odsp6VemJtMb0vYczdBggSkbhUR1opU2wsR0FU+4.WafNg.oLhmFyVBUSGzt.n3kCJkPUJe+QR4cq2vsRkF0b81shahA6QnSjtro33yQ6rcx9zX2pt0ATO2LIkRpgox68AYFw2k4RRJ848vWMWm4H2wroVgKo+Pjw1aNIJLUw2JH+cpRdgav6T6GbGIZPPvCu4qDJFtzc9y4oSK7p3cOsgKWvMp9jH3YU+mQC99wRY30A9Y5NQlQ4MEZajEeGnjSs5PhtcqWtwtt0yUpcwUdSp5mqzatZVlYfShsSZoyaBbYYiUuVnIq6F1xes1bPbSzT2hUx3zhyubHV8NcqTiAManvS0LeLpGDZn5zuJevuUM14uhuh370DHnQ1NDukz2++ycsu+ity88+k9B33OMByhGwiysw8HComxYRYLi32DSZGQ9G5JfFz2miilKqe5qZCB4bWSOrXbj51eouYqQicJtru+f2J98GV6Wbe+gO.ZeWtdSsQJF6QkW59P1UjPHVPgwOCb96ig21OkZde4i3LdZqMxLzmPDQzKtPl7HC6yUfRtW5TJeQyzaDNkzer4K.mMbzQp5Gqjtv6d2mt4Zu98IWi1QF.57gaaWK9q51ttZMXrvxZvXwk0fQ43E1fwTlYMXbEKgT9ikP9XIjekTBo764RH+v+8ikP9XIjG7RHq92n5dVB4W1eAsgX+H9q70eNQYrw5JJftlo9gHsA5H4Xmo+ZMzuG4PHq5q78S6f67WS4UXMUVg0TcEVSsUXM0Wg0ryJrlFKcMxBZI8uRFlCD5dn5kissOjI+UInhtr9+n1MQoI```