*** WAV DataType V40.2 *** by David N.Junod and Christian Buchner This is an enhanced WAV datatype based on the sourcecodes found in the OS 3.1 Native Developer Kit. It was originally written by David N.Junod. All changes were done by Christian Buchner. Installation ------------ Copy devs/Datatypes/WAVE#? SYS:devs/Datatypes/ Copy classes/Datatypes/wav.datatype SYS:classes/Datatypes/ Now reboot or type "AddDatatypes REFRESH" in a shell. Enhancements over V39.1 ----------------------- * Handles 8 and 16 bit MONO and STEREO WAV files correctly. For STEREO WAVs, the channels will be mixed together. (Sound datatypes are not capable of playing stereo samples!) * it accepts WAV files that are one byte too short and does not return an error in that case. (I found out to have lots of these 'buggy' WAV files.) * loads the sample to Fast RAM if possible (you need sound.datatype V40 for that feature!) * saves memory while loading samples by reading and decoding only small (32K) chunks. The old WAV datatype V39.1 needed twice the length of a sample as free memory. * uses optimized assembly routines for converting/mixing the sound data. Future enhancements ------------------- * Implement different decompression methods (ADPCM, a-law, y-law) -> DOCUMENTATION DESPERATELY NEEDED!!! (see address below) * "Normalization" of the sample by stretching it to full 8 bit signal range. Future projects --------------- * VOC datatype Please send me the documentation of any sound and/or sound compression format you know. (see address below) The Author ---------- Christian Buchner Ganghoferstraße 2 82110 Germering Germany Tel.: +49-89-844872 EMAIL: flowerp@eikon.e-technik.tu-muenchen.de on irc #amiga and #amigager // \X/ Flowerpower