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Diffstat (limited to 'modules/pdp_transform.c')
| -rw-r--r-- | modules/pdp_transform.c | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/modules/pdp_transform.c b/modules/pdp_transform.c new file mode 100644 index 0000000..b69f778 --- /dev/null +++ b/modules/pdp_transform.c @@ -0,0 +1,357 @@ +/* + * PiDiP module + * Copyright (c) by Yves Degoyon (ydegoyon@free.fr) + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +/* This object is a port of transform effect from EffecTV + * Originally written by clifford smith <nullset@dookie.net> + * Pd-fication by Yves Degoyon ( ydegoyon@free.fr ) + */ + + +#include "pdp.h" +#include <math.h> + +#define MAX_TABLES 6 +static unsigned int fastrand_val; +#define inline_fastrand() (fastrand_val=fastrand_val*1103515245+12345) + +static char *pdp_transform_version = "pdp_transform: version 0.1, port of transform from EffecTV by clifford smith, adapted by ydegoyon@free.fr "; + +typedef struct pdp_transform_struct +{ + t_object x_obj; + t_float x_f; + + t_int x_packet0; + t_int x_packet1; + t_int x_dropped; + t_int x_queue_id; + + t_outlet *x_outlet0; + t_int x_vwidth; + t_int x_vheight; + t_int x_vsize; + + t_int **x_table_list; // mapping tables + t_int **x_table_list_u; // mapping tables + t_int x_table; // current table + t_int x_t; + + +} t_pdp_transform; + +static void pdp_transform_table(t_pdp_transform *x, t_floatarg ftable ) +{ + if ( ( ftable >= 0 ) && ( ftable < MAX_TABLES ) ) + { + x->x_table = ftable; + } +} + +static int pdp_transform_map_from_table(t_pdp_transform *x, t_int px, t_int py, t_int t) +{ + int xd,yd; + + yd = py + (inline_fastrand() >> 30)-2; + xd = px + (inline_fastrand() >> 30)-2; + if (xd > x->x_vwidth) { + xd-=1; + } + return (xd+yd*x->x_vwidth); +} + +static int pdp_transform_map_from_table_u(t_pdp_transform *x, t_int px, t_int py, t_int t) +{ + int xd,yd; + + yd = py + (inline_fastrand() >> 30)-2; + xd = px + (inline_fastrand() >> 30)-2; + if (xd > x->x_vwidth) { + xd-=1; + } + return ((xd>>1)+(yd>>1)*(x->x_vwidth>>1)); +} + +static void pdp_transform_square_table_init(t_pdp_transform *x) +{ + const int size = 16; + t_int px, py, tx, ty; + + for(py=0; py<x->x_vheight; py++) + { + ty = py % size - size / 2; + if((py/size)%2) + { + ty = py - ty; + } + else + { + ty = py + ty; + } + if(ty<0) ty = 0; + if(ty>=x->x_vheight) + { + ty = x->x_vheight - 1; + } + for(px=0; px<x->x_vwidth; px++) + { + tx = px % size - size / 2; + if((px/size)%2) + { + tx = px - tx; + } + else + { + tx = px + tx; + } + if(tx<0) tx = 0; + if(tx>=x->x_vwidth) tx = x->x_vwidth - 1; + x->x_table_list[5][px+py*x->x_vwidth] = ty*x->x_vwidth+tx; + x->x_table_list_u[5][px+py*x->x_vwidth] = (ty>>1)*(x->x_vwidth>>1)+(tx>>1); + } + } +} + +static void pdp_transform_init_tables(t_pdp_transform *x) +{ + t_int px, py; + + for (py=0;py<x->x_vheight;py++) + { + for (px=0;px<x->x_vwidth;px++) + { + x->x_table_list[0][px+py*x->x_vwidth] = px+py*x->x_vwidth; + x->x_table_list[1][px+py*x->x_vwidth] = (x->x_vwidth-1-px)+py*x->x_vwidth; + x->x_table_list[2][px+py*x->x_vwidth] = px+(x->x_vheight-1-py)*x->x_vwidth; + x->x_table_list[3][px+py*x->x_vwidth] = (x->x_vwidth-1-px)+(x->x_vheight-1-py)*x->x_vwidth; + x->x_table_list_u[0][px+py*x->x_vwidth]= (px>>1)+((py*x->x_vwidth)>>2); + x->x_table_list_u[1][px+py*x->x_vwidth] = (x->x_vwidth>>1)-1-(px>>1)+(py>>1)*(x->x_vwidth>>1); + x->x_table_list_u[2][px+py*x->x_vwidth] = (px>>1)+((x->x_vheight>>1)-1-(py>>1))*(x->x_vwidth>>1); + x->x_table_list_u[3][px+py*x->x_vwidth] = ((x->x_vwidth-1-px)>>1)+((x->x_vheight-1-py)>>1)*(x->x_vwidth>>1); + x->x_table_list[4][px+py*x->x_vwidth] = -2; /* Function */ + x->x_table_list_u[4][px+py*x->x_vwidth] = -2; /* Function */ + } + } + pdp_transform_square_table_init(x); +} + +static void pdp_transform_free_ressources(t_pdp_transform *x) +{ + int i; + + // free tables + for(i=0;i<MAX_TABLES;i++) + { + if ( x->x_table_list[i] ) freebytes( x->x_table_list[i], x->x_vsize*sizeof(int) ); + if ( x->x_table_list_u[i] ) freebytes( x->x_table_list_u[i], x->x_vsize*sizeof(int) ); + } +} + +static void pdp_transform_allocate(t_pdp_transform *x) +{ + int i; + + // allocate tables + for(i=0;i<MAX_TABLES;i++) + { + x->x_table_list[i] = (t_int *) getbytes( x->x_vsize*sizeof(int) ); + x->x_table_list_u[i] = (t_int *) getbytes( x->x_vsize*sizeof(int) ); + } +} + +static void pdp_transform_process_yv12(t_pdp_transform *x) +{ + t_pdp *header = pdp_packet_header(x->x_packet0); + short int *data = (short int *)pdp_packet_data(x->x_packet0); + t_pdp *newheader = pdp_packet_header(x->x_packet1); + short int *newdata = (short int *)pdp_packet_data(x->x_packet1); + t_int i, iu; + t_int px, py; + t_int d, o, du=0, ou; + short int *pY, *pU, *pV, *pnY, *pnU, *pnV; + + /* allocate all ressources */ + if ( ((int)header->info.image.width != x->x_vwidth) || + ((int)header->info.image.height != x->x_vheight) ) + { + pdp_transform_free_ressources(x); + x->x_vwidth = header->info.image.width; + x->x_vheight = header->info.image.height; + x->x_vsize = x->x_vwidth*x->x_vheight; + pdp_transform_allocate(x); + post( "pdp_transform : reallocated buffers" ); + pdp_transform_init_tables(x); + post( "pdp_transform : initialized tables" ); + } + + newheader->info.image.encoding = header->info.image.encoding; + newheader->info.image.width = x->x_vwidth; + newheader->info.image.height = x->x_vheight; + + x->x_t++; + + pnY = newdata; + pnV = newdata+x->x_vsize; + pnU = newdata+x->x_vsize+(x->x_vsize>>2); + iu = 0; + for(py=0; py<x->x_vheight; py++) + { + for(px=0; px<x->x_vwidth; px++) + { + d = x->x_table_list[x->x_table][py*x->x_vwidth+px]; + if ( (px%2==0) && (py%2==0) ) + { + du = x->x_table_list_u[x->x_table][py*x->x_vwidth+px]; + iu++; + } + if ( d==-2 ) + { + d = pdp_transform_map_from_table( x, px, py, x->x_t ); + du = pdp_transform_map_from_table_u( x, px, py, x->x_t ); + } + if ( d < 0) { + o = 0; + ou = 0; + } else { + o = d; + ou = du; + } + *pnY++ = *(data+o); + if ( (px%2==0) && (py%2==0) ) + { + *pnV++ = *(data+x->x_vsize+ou); + *pnU++ = *(data+x->x_vsize+(x->x_vsize>>2)+ou); + } + } + } + + return; +} + +static void pdp_transform_sendpacket(t_pdp_transform *x) +{ + /* delete source packet */ + pdp_packet_mark_unused(x->x_packet0); + x->x_packet0 = -1; + + /* unregister and propagate if valid dest packet */ + pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet1); +} + +static void pdp_transform_process(t_pdp_transform *x) +{ + int encoding; + t_pdp *header = 0; + + /* check if image data packets are compatible */ + if ( (header = pdp_packet_header(x->x_packet0)) + && (PDP_IMAGE == header->type)){ + + /* pdp_transform_process inputs and write into active inlet */ + switch(pdp_packet_header(x->x_packet0)->info.image.encoding) + { + + case PDP_IMAGE_YV12: + x->x_packet1 = pdp_packet_clone_rw(x->x_packet0); + pdp_queue_add(x, pdp_transform_process_yv12, pdp_transform_sendpacket, &x->x_queue_id); + break; + + case PDP_IMAGE_GREY: + // should write something to handle these one day + // but i don't use this mode + break; + + default: + /* don't know the type, so dont pdp_transform_process */ + break; + + } + } + +} + +static void pdp_transform_input_0(t_pdp_transform *x, t_symbol *s, t_floatarg f) +{ + + /* if this is a register_ro message or register_rw message, register with packet factory */ + + if (s== gensym("register_rw")) + x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packet0, (int)f, pdp_gensym("image/YCrCb/*") ); + + if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){ + + /* add the process method and callback to the process queue */ + pdp_transform_process(x); + + } + +} + +static void pdp_transform_free(t_pdp_transform *x) +{ + int i; + + pdp_transform_free_ressources(x); + if ( x->x_table_list ) freebytes(x->x_table_list, MAX_TABLES * sizeof(int *)); + pdp_queue_finish(x->x_queue_id); + pdp_packet_mark_unused(x->x_packet0); +} + +t_class *pdp_transform_class; + +void *pdp_transform_new(void) +{ + int i; + + t_pdp_transform *x = (t_pdp_transform *)pd_new(pdp_transform_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("table")); + + x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); + x->x_packet0 = -1; + x->x_packet1 = -1; + x->x_queue_id = -1; + + x->x_table_list = (t_int **) getbytes(MAX_TABLES * sizeof(int *)); + x->x_table_list_u = (t_int **) getbytes(MAX_TABLES * sizeof(int *)); + x->x_t = 0; + + return (void *)x; +} + + +#ifdef __cplusplus +extern "C" +{ +#endif + + +void pdp_transform_setup(void) +{ +// post( pdp_transform_version ); + pdp_transform_class = class_new(gensym("pdp_transform"), (t_newmethod)pdp_transform_new, + (t_method)pdp_transform_free, sizeof(t_pdp_transform), 0, A_NULL); + + class_addmethod(pdp_transform_class, (t_method)pdp_transform_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL); + class_addmethod(pdp_transform_class, (t_method)pdp_transform_table, gensym("table"), A_DEFFLOAT, A_NULL); + +} + +#ifdef __cplusplus +} +#endif |