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[Caml-list] Video/Audio codecs in ocaml
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| Date: | -- (:) |
| From: | Damien Bobillot <damien.bobillot@m...> |
| Subject: | Re: [Caml-list] Video/Audio codecs in ocaml |
--Apple-Mail-6--704950709 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Jonathan Roewen wrote : >> With OCaml you can't use features like SIMD instructions of CPUs, and >> will do many bound checking, so it will be slower. >> I'm a bit sceptical that ocaml may be as good as C for pure signal >> processing. > > Oh okay. Ah well, I'm doing a pure OCaml OS anyways, so we'll just > have to wait and see. Ok, I wasn't aware of that. In this case, you effectively have to write it in ocaml. Did you have a url to this OS projet ? I don't know how much speed you'll lost compared to C code, but if you use native ocaml compilation it shouldn't be a big issue (even if it's twice as slow as C, it'll run on recent CPUs ;)). > Can bounds checking be disabled for just one module ? The -unsafe option is a compiler option, not a linker option, so I think it may has a different value for each .ml file. >> Writing a mpeg2 decoder won't take less than a week !!! > > We'll see. It'd be more like rewriting something like libmpeg2 in > ocaml I think. It'd be a damn good attempt anyways ;-) So... good luck ;) -- Damien Bobillot --Apple-Mail-6--704950709 Content-Transfer-Encoding: base64 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGIjCCAtsw ggJEoAMCAQICAw54xzANBgkqhkiG9w0BAQQFADBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhh d3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVt YWlsIElzc3VpbmcgQ0EwHhcNMDUwNDEzMTc1MTAxWhcNMDYwNDEzMTc1MTAxWjBJMR8wHQYDVQQD ExZUaGF3dGUgRnJlZW1haWwgTWVtYmVyMSYwJAYJKoZIhvcNAQkBFhdkYW1pZW4uYm9iaWxsb3RA bTR4Lm9yZzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJ1TOYBqwJ42s0Fzz56jY1p0 fplGyikFgoNEUKGnOpqt4vpeoqUppAnORt2yvdQJxfIkhsWkrD/diiPS7MTF73wcxlSJtqYzVzPK G/2WDm6dBinuWCIyWYFhtGedyxbap3kJW44H7cL7HUVVxZ0JhOIOTsjCoEzaeKnML7bctbIJeXEE lErfbDv2jA1PDG1ru5dx+Q+AmbexX92ygnntE6aX3QZLSbhrytg4yCRdV8cOyQ9eFruZBI42RJv3 nJXevjUOr4n+y/7bzijAJj4BFyUU+dllvj6bmk5brnUXheCSOD0Ci20dqGNC1MyJ43b6MoIrbW7j JwYIv12D6KuWoaUCAwEAAaM0MDIwIgYDVR0RBBswGYEXZGFtaWVuLmJvYmlsbG90QG00eC5vcmcw DAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQQFAAOBgQB0u5b6wgwsbcyzDHJTzshlCn4gshxWtU/1 mH77gBCpsY8L554YV4/Tvm1PzmDzErm++drQf5HMy8sEFjmwLvNfBP0BqtkSqsdRFGR4wHzTjMhS EW5LgmlaccqBQzqQrANtzglgBVbtmBDAV92qHjQslwHK4FohCRRzGl4DLQmqBDCCAz8wggKooAMC AQICAQ0wDQYJKoZIhvcNAQEFBQAwgdExCzAJBgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENh cGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgGA1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNV BAsTH0NlcnRpZmljYXRpb24gU2VydmljZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJz b25hbCBGcmVlbWFpbCBDQTErMCkGCSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3Rl LmNvbTAeFw0wMzA3MTcwMDAwMDBaFw0xMzA3MTYyMzU5NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYD VQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29u YWwgRnJlZW1haWwgSXNzdWluZyBDQTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8VXNV +065yplaHmjAdQRwnd/p/6Me7L3N9VvyGna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7dyfArhVqq P3FWy688Cwfn8R+RNiQqE88r1fOCdz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUPSAR/p7bRPGEE QB5kGXJgt/sCAwEAAaOBlDCBkTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1UdHwQ8MDowOKA2oDSG Mmh0dHA6Ly9jcmwudGhhd3RlLmNvbS9UaGF3dGVQZXJzb25hbEZyZWVtYWlsQ0EuY3JsMAsGA1Ud DwQEAwIBBjApBgNVHREEIjAgpB4wHDEaMBgGA1UEAxMRUHJpdmF0ZUxhYmVsMi0xMzgwDQYJKoZI hvcNAQEFBQADgYEASIzRUIPqCy7MDaNmrGcPf6+svsIXoUOWlJ1/TCG4+DYfqi2fNi/A9BxQIJNw PP2t4WFiw9k6GX6EsZkbAMUaC4J0niVQlGLH2ydxVyWN3amcOY6MIE9lX5Xa9/eH1sYITq726jTl EBpbNU1341YheILcIRk13iSx0x1G/11fZU8xggLnMIIC4wIBATBpMGIxCzAJBgNVBAYTAlpBMSUw IwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVy c29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIDDnjHMAkGBSsOAwIaBQCgggFTMBgGCSqGSIb3DQEJ AzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTA1MTExNzA5NTExMlowIwYJKoZIhvcNAQkE MRYEFFhDAQnL6zR5SyeKLrJ0/WKpe+L2MHgGCSsGAQQBgjcQBDFrMGkwYjELMAkGA1UEBhMCWkEx JTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAgMOeMcwegYLKoZIhvcNAQkQAgsxa6BpMGIxCzAJ BgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQD EyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIDDnjHMA0GCSqGSIb3DQEBAQUA BIIBAGeHb7iSmeY7AMw5ESU2a/6KcX2LgtOwcGG6Uru+Fj93dTXeTyEM3CJQpZU3fFBdpcMjo6EO 7z/eJRwh8MPU2gp4XynL5uUJZ20ulCnS2yZ44nTAxVmxPAXTmxoK0R/fdmoHROl+CntCo1AaaUav DEyIn2o/B65d4BGURnDSkcZnNcrxLVs1SMEPhQeyionh988d25bHCUnSG3Ej4zuQT+VF96gpdyOr 6MB5jTLke+fEKA9VKHGg6NxDAABjDmxit0/buPyEtBGJ5T16R+o52L0aoR9ulv6YLtYEOAgkSBTL kBOh5LjtT4HeYd+eYdd5w6xcppA6fbq3Io809u89D+AAAAAAAAA= --Apple-Mail-6--704950709--