diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d60c31a --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. 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Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. 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The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/js/dbopl.js b/js/dbopl.js deleted file mode 100644 index a6ff076..0000000 --- a/js/dbopl.js +++ /dev/null @@ -1,177 +0,0 @@ -var DBOPL = new function() { // DBOPL namespace - -// dbopl.h - -this.WAVE_HANDLER = 10; -this.WAVE_TABLELOG = 11; -this.WAVE_TABLEMUL = 12; -this.DBOPL_WAVE = this.WAVE_TABLEMUL; - -this.SynthMode = { - sm2AM:0, - sm2FM:1, - sm3AM:2, - sm3FM:3, - sm4Start:4, - sm3FMFM:5, - sm3AMFM:6, - sm3FMAM:7, - sm3AMAM:8, - sm6Start:9, - sm2Percussion:10, - sm3Percussion:11, -}; - -this.SHIFT_KSLBASE = 16; -this.SHIFT_KEYCODE = 24; - -this.Operator = function() { - // public: - - // enum - this.MASK_KSR = 0x10; - this.MASK_SUSTAIN = 0x20; - this.MASK_VIBRATO = 0x40; - this.MASK_TREMOLO = 0x80; - this.State = { // typedef enum - OFF:0, - RELEASE:1, - SUSTAIN:2, - DECAY:3, - ATTACK:4, - }; - this.volHandler=0; - this.waveBase=0; - this.waveMask=0; - this.waveStart=0; - - this.waveIndex=0; //WAVE_BITS shifted counter of the frequency index - this.waveAdd=0; //The base frequency without vibrato - this.waveCurrent=0; //waveAdd + vibratao - - this.chanData=0; //Frequency/octave and derived data coming from whatever channel controls this - this.freqMul=0; //Scale channel frequency with this, TODO maybe remove? - this.vibrato=0; //Scaled up vibrato strength - this.sustainLevel=0; //When stopping at sustain level stop here - this.totalLevel=0; //totalLevel is added to every generated volume - this.currentLevel=0; //totalLevel + tremolo - this.volume=0; //The currently active volume - - this.attackAdd=0; //Timers for the different states of the envelope - this.decayAdd=0; - this.releaseAdd=0; - this.rateIndex=0; //Current position of the evenlope - - this.rateZero=0; //Bits for the different states of the envelope having no changes - this.keyOn=0; //Bitmask of different values that can generate keyon - //Registers, also used to check for changes - this.reg20=0; - this.reg40=0; - this.reg60=0; - this.reg80=0; - this.regE0=0; - //Active part of the envelope we're in - this.state=0; - //0xff when tremolo is enabled - this.tremoloMask=0; - //Strength of the vibrato - this.vibStrength=0; - //Keep track of the calculated KSR so we can check for changes - this.ksr=0; - - return this; -}; - -// dbopl.cpp (private stuff) -var ZeroArray = function(size) { - // http://stackoverflow.com/questions/1295584/most-efficient-way-to-create-a-zero-filled-javascript-array - return Array.apply(null, new Array(size)).map(Number.prototype.valueOf,0); -}; - -var PI = 3.14159265358979323846; -var OPLRATE = 14318180.0 / 288.0; -var TREMOLO_TABLE = 52; -var WAVE_BITS = 10; -var WAVE_SH = 32 - WAVE_BITS; -var WAVE_MASK = (1 << WAVE_SH) - 1; -var LFO_SH = WAVE_SH - 10; -var LFO_MAX = 256 << LFO_SH; -var ENV_BITS = 9; -var ENV_MIN = 0; -var ENV_EXTRA = ENV_BITS - 9; -var ENV_MAX = 511 << ENV_EXTRA; -var ENV_LIMIT = (12 * 256) >> (3 - ENV_EXTRA); -var ENV_SILENT = function(_X_) { return _X_ >= ENV_LIMIT; } -var RATE_SH = 24; -var RATE_MASK = (1 << RATE_SH ) - 1; -var MUL_SH = 16; - -var KslCreateTable = [ - 64, 32, 24, 19, - 16, 12, 11, 10, - 8, 6, 5, 4, - 3, 2, 1, 0, -]; -var M = function(_X_) {return _X_ * 2}; -var FreqCreateTable = [ - M(0.5), M(1), M(2), M(3), M(4), M(5), M(6), M(7), - M(8), M(9), M(10), M(10), M(12), M(12), M(15), M(15), -]; - -var AttackSamplesTable = [ - 69, 55, 46, 40, - 35, 29, 23, 20, - 19, 15, 11, 10, - 9 -]; -var EnvelopeIncreaseTable = [ - 4, 5, 6, 7, - 8, 10, 12, 14, - 16, 20, 24, 28, - 32, -]; - -var WaveTable = ZeroArray(8 * 512); - -var WaveBaseTable = [ - 0x000, 0x200, 0x200, 0x800, - 0xa00, 0xc00, 0x100, 0x400, -]; - -var WaveMaskTable = [ - 1023, 1023, 511, 511, - 1023, 1023, 512, 1023, -]; - -var WaveStartTable = [ - 512, 0, 0, 0, - 0, 512, 512, 256, -]; - -var MulTable = ZeroArray(384); -var KslTable = ZeroArray(8 * 16); -var TremoloTable = ZeroArray(TREMOLO_TABLE); -var ChanOffsetTable = ZeroArray(32); -var OpOffsetTable = ZeroArray(64); -var VibratoTable = [ - 1 - 0x00, 0 - 0x00, 1 - 0x00, 30 - 0x00, - 1 - 0x80, 0 - 0x80, 1 - 0x80, 30 - 0x80 -]; - -// Note: the original used reference parameters to return index and shift.. -function EnvelopeSelect(val) { - var shift, index; - if ( val < 13 * 4 ) { //Rate 0 - 12 - shift = 12 - ( val >> 2 ); - index = val & 3; - } else if ( val < 15 * 4 ) { //rate 13 - 14 - shift = 0; - index = val - 12 * 4; - } else { //rate 15 and up - shift = 0; - index = 12; - } - return [index, shift]; -} - -}; // end of DBOPL namespace