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Diffstat (limited to 'src/array2rawbytes.c')
| -rw-r--r-- | src/array2rawbytes.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/array2rawbytes.c b/src/array2rawbytes.c new file mode 100644 index 0000000..ecd6de8 --- /dev/null +++ b/src/array2rawbytes.c @@ -0,0 +1,187 @@ +/* -*- Mode: C -*- */ +/*=============================================================================*\ + * File: array2rawbytes.c + * Author: Bryan Jurish <moocow@ling.uni-potsdam.de> + * Description: convert byte-valued atom lists to wchar_t-valued atom lists + * + * Copyright (c) 2009 Bryan Jurish. + * + * For information on usage and redistribution, and for a DISCLAIMER OF ALL + * WARRANTIES, see the file "COPYING", in this distribution. + * + * 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. + *=============================================================================*/ + +#include <string.h> +#include <wchar.h> +#include <stdlib.h> +#include <m_pd.h> + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "mooPdUtils.h" +#include "pdstringUtils.h" + +/* black magic */ +#ifdef NT +#pragma warning( disable : 4244 ) +#pragma warning( disable : 4305 ) +#endif + +/*-------------------------------------------------------------------- + * DEBUG + *--------------------------------------------------------------------*/ + +/*===================================================================== + * Constants + *=====================================================================*/ +static char *array2rawbytes_banner = "array2rawbytes: pdstring version " PACKAGE_VERSION " by Bryan Jurish"; + +#define ARRAY2RAWBYTES_DEFAULT_BUFLEN PDSTRING_DEFAULT_BUFLEN + +/*===================================================================== + * Structures and Types: any2string + *=====================================================================*/ + +static t_class *array2rawbytes_class; + +typedef struct _array2rawbytes +{ + t_object x_obj; + t_symbol *x_name; //-- name of source array + t_pdstring_bytes x_bytes; //-- byte "buffer", really just aliases array t_float* + t_pdstring_atoms x_atoms; //-- output atom buffer + t_outlet *x_outlet; +} t_array2rawbytes; + + +/*===================================================================== + * Methods + *=====================================================================*/ + +/*-------------------------------------------------------------------- + * get OFFSET LENGTH + */ +static void array2rawbytes_get(t_array2rawbytes *x, t_float offset_f, t_float len_f) +{ + int offset=offset_f, len=len_f, fvecsize, cvecsize; + t_garray *a; + t_float *fvec; + unsigned char *cvec; + + //-- sanity check(s) + if (!(a = (t_garray *)pd_findbyclass(x->x_name, garray_class))) { + pd_error(x, "array2rawbytes_get: no such array '%s'", x->x_name->s_name); + return; + } + + //-- get float* from array + if (!garray_getfloatarray(a, &fvecsize, &fvec)) + pd_error(x,"array2rawbytes: bad template for write to array '%s'", x->x_name->s_name); + + //-- get character offset & len + cvec = (unsigned char*)fvec; + cvecsize = fvecsize*sizeof(t_float)/sizeof(unsigned char); + post("array2rawbytes[x=%p]: char data: cvecsize=%d", x, cvecsize); + + //-- tweak out-of-bounds values + post("array2rawbytes[x=%p]: pre-tweak: offset=%d, len=%d", x, offset, len); + + offset %= cvecsize; + if (len <= 0 || offset+len >= cvecsize) + len = cvecsize - offset; + + post("array2rawbytes[x=%p]: post-tweak: offset=%d, len=%d", x, offset, len); + + //-- munge x_bytes + x->x_bytes.b_buf = cvec+offset; + x->x_bytes.b_len = len; + + //-- convert bytes -> atoms + pdstring_bytes2atoms(x, &x->x_atoms, &x->x_bytes, PDSTRING_EOS_NONE); + + //-- output + outlet_list(x->x_outlet, &s_list, x->x_atoms.a_len, x->x_atoms.a_buf); +} + + +/*-------------------------------------------------------------------- + * new + */ +static void *array2rawbytes_new(t_symbol *arrayname) +{ + t_array2rawbytes *x = (t_array2rawbytes *)pd_new(array2rawbytes_class); + + //-- init + x->x_name = arrayname; + pdstring_bytes_init(&x->x_bytes, 0); //-- gets clobbered by array data + pdstring_atoms_init(&x->x_atoms, PDSTRING_DEFAULT_BUFLEN); + + //-- outlets + x->x_outlet = outlet_new(&x->x_obj, &s_list); + + return (void *)x; +} + +/*-------------------------------------------------------------------- + * set ARRAYNAME + */ +static void array2rawbytes_set(t_array2rawbytes *x, t_symbol *arrayname) +{ + x->x_name = arrayname; +} + +/*-------------------------------------------------------------------- + * free + */ +static void array2rawbytes_free(t_array2rawbytes *x) +{ + pdstring_atoms_clear(&x->x_atoms); + outlet_free(x->x_outlet); + return; +} + +/*-------------------------------------------------------------------- + * setup: guts + */ +void array2rawbytes_setup_guts(void) +{ + //-- class + array2rawbytes_class = class_new(gensym("array2rawbytes"), + (t_newmethod)array2rawbytes_new, + (t_method)array2rawbytes_free, + sizeof(t_array2rawbytes), + CLASS_DEFAULT, + A_DEFSYM, //-- arrayname + 0); + + //-- methods + class_addmethod(array2rawbytes_class, (t_method)array2rawbytes_get, gensym("get"), A_DEFFLOAT, A_DEFFLOAT, 0); + class_addmethod(array2rawbytes_class, (t_method)array2rawbytes_set, gensym("set"), A_DEFSYM, 0); + + //-- help symbol + //class_sethelpsymbol(array2rawbytes_class, gensym("array2rawbytes-help.pd")); //-- breaks pd-extended help lookup +} + +/*-------------------------------------------------------------------- + * setup + */ +void array2rawbytes_setup(void) +{ + post(array2rawbytes_banner); + array2rawbytes_setup_guts(); +} |