61 lines
2.9 KiB
Markdown
61 lines
2.9 KiB
Markdown
# Third-party code
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## pl_mpeg
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`host/src/movie/pl_mpeg2.h` is pl_mpeg by Dominic Szablewski
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(https://github.com/phoboslab/pl_mpeg), extended here for MPEG-2. It is under the MIT licence below.
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The MPEG-2 coefficient table B.15 and the run/level order in that file are
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data from ISO/IEC 13818-2, cross-checked against FFmpeg's
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`libavcodec/mpeg12data.c`.
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### pl_mpeg licence (MIT)
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Copyright (c) Dominic Szablewski - https://phoboslab.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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## jak-project's 989snd (ISC)
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`host/src/rac1/snd989.c` and `host/src/rac1/snd989_tables.h` (the host's
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989snd IOP driver) follow the jak-project's reimplementation of 989snd
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(https://github.com/open-goal/jak-project, `game/sound/989snd` and
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`game/sound/common`, by Ziemas) for the sound-effect grain semantics, the LFOs,
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the volume and pan rules (MakeVolume, AdjustVolToGroup), the note-to-pitch
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conversion, and they take from it the note pitch table, the pan table and the
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SPU's Gaussian interpolation table. Those files are under the ISC licence:
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Copyright (c) 2021-2024 Ziemas
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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The SPU2 reverb in the same file is written from the hardware's formula as
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documented in nocash's psx-spx; its preset register values are the PlayStation
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sound library's effect modes.
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