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13 lines
3.1 KiB
Markdown
13 lines
3.1 KiB
Markdown
# libwebrtc technical debt
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### Unknown function info
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- [409 exports (60 without a known name, bound by NID)](../../../core/libs/prx/libwebrtc/Export.cpp) (libwebrtc) - every function export of `libwebrtc.sprx` from the firmware 13.60 export table that the next section does not implement, names from aerolib.csv only where `tools/nid_names.py` `compute_nid` reproduces the NID. Signatures, parameter layouts and behaviour are unknown; every export throws through `NotImplemented_nid_no_patch`
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- [31 data exports](../../../core/libs/prx/libwebrtc/Export.cpp) (libwebrtc) - the module also exports 31 data objects (+qcl2IzxTzg, -ix-knPYqWA, 00mefEErs+Y, 5FM0YOa3NWc, 67nsSkXmJ7E, 7I2xDnqfDV4, 8Dzy4JayJSU, CVCDyAzGrhI, HpbtuVdvO-w, PGIpx6NnFLE, Q+xnDp4KI-s, QXDv9OpZNvM, aOOjLmup+u4, g5USRJNh3bU, hvpHGXjlpbk, iU6+qODNSjU, jpkYoOv34AM, lHLJlq3NEqE, lQJvoyxHov4, nUaORqH85DQ, o6LS+08kOUs, oh8srl3AcNE, oslHzys1vV0, sp5NqvqDdHw, t66Gw3OIpSo, tr8vseK8-ro, uSis0q+bv6k, uTz5pEKL+hM, uxkudCJIYJA, whHm70jlRXw, yW0sV3sCdPA); they are not defined, so imports of them stay unresolved until their layout is known
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### Public source implementations
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- [Source revision](../../../core/libs/prx/libwebrtc/Export.cpp) (libwebrtc) - the module's exact WebRTC revision is not identified. Its `rtc::` names and `InterleavedView` resampler overloads place it between M127 ([branch-heads/6533](https://webrtc.googlesource.com/src/+/e0b28a6a81a989c1f5c89e30fcd247870047390d)) and M134 ([branch-heads/6998](https://webrtc.googlesource.com/src/+/8d78f5de6c27b2c793039989ea381f1428fb0100)), so the exports below follow code that is the same at both. Nothing is checked on the console. Closes when: the revision is identified and the exports are compared with the console.
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- [absl::numbers_internal::FastIntToBuffer(int, char*)](../../../core/libs/prx/libwebrtc/Export.cpp) (libwebrtc) - follows the abseil both branches pin, [65ef38d368](https://chromium.googlesource.com/chromium/src/third_party/+/65ef38d36813d1ad9d4cbf8a18b32ac3691f418b/abseil-cpp/absl/strings/numbers.cc) and [d212a71416](https://chromium.googlesource.com/chromium/src/third_party/+/d212a71416ad7c6ceca04d6d27dfdd84fd00c04c/abseil-cpp/absl/strings/numbers.cc): the decimal text and a NUL, returning a pointer to the NUL. For magnitudes from 10 to 99999999 its 8-byte store also zeroes the bytes after the digits up to 8 from the first digit. A null buffer, which abseil writes through, throws. Closes when: compared with the console.
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- [rtc::ExpFilter::Reset and Apply](../../../core/libs/prx/libwebrtc/src/ExpFilter.cpp) (libwebrtc) - adapted from [exp_filter.cc](https://webrtc.googlesource.com/src/+/8d78f5de6c27b2c793039989ea381f1428fb0100/rtc_base/numerics/exp_filter.cc), with its WebRTC copyright notice and BSD licence at the top of the file, on the 12-byte `alpha_`, `filtered_` and `max_` layout of `exp_filter.h`. -1 marks both an unset output and no maximum, so an output that lands on exactly -1 restarts the filter on the next sample, as upstream does. The last bit of a result can differ if the console build fuses the multiply-adds. A null filter throws. Closes when: compared with the console.
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