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master
src/engine/external/wavpack/float.c
50 строк
1 KB
Magnus Auvinen
applied patch from Richie Nyhus to convert CRLF to LF, as it should be
29 ноя 2008, 09:39
29 ноя 2008, 09:39
4004d13
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//////////////////////////////////////////////////////////////////////////// // **** WAVPACK **** // // Hybrid Lossless Wavefile Compressor // // Copyright (c) 1998 - 2006 Conifer Software. // // All Rights Reserved. // // Distributed under the BSD Software License (see license.txt) // //////////////////////////////////////////////////////////////////////////// // float.c #include "wavpack.h" int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd) { int bytecnt = wpmd->byte_length; char *byteptr = wpmd->data; if (bytecnt != 4) return FALSE; wps->float_flags = *byteptr++; wps->float_shift = *byteptr++; wps->float_max_exp = *byteptr++; wps->float_norm_exp = *byteptr; return TRUE; } void float_values (WavpackStream *wps, int32_t *values, int32_t num_values) { int shift = wps->float_max_exp - wps->float_norm_exp + wps->float_shift; if (shift > 32) shift = 32; else if (shift < -32) shift = -32; while (num_values--) { if (shift > 0) *values <<= shift; else if (shift < 0) *values >>= -shift; if (*values > 8388607L) *values = 8388607L; else if (*values < -8388608L) *values = -8388608L; values++; } }