diff options
Diffstat (limited to 'modules/pdp_cropper.c')
| -rw-r--r-- | modules/pdp_cropper.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/modules/pdp_cropper.c b/modules/pdp_cropper.c new file mode 100644 index 0000000..f1c3004 --- /dev/null +++ b/modules/pdp_cropper.c @@ -0,0 +1,291 @@ +/* + * 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 video cropper + * Written by Yves Degoyon + */ + + + +#include "pdp.h" +#include <math.h> + +static char *pdp_cropper_version = "pdp_cropper: a video cropper, version 0.1, written by Yves Degoyon (ydegoyon@free.fr)"; + +typedef struct pdp_cropper_struct +{ + t_object x_obj; + t_float x_f; + + t_outlet *x_outlet0; + t_int x_packet0; + t_int x_packet1; + t_int x_dropped; + t_int x_queue_id; + + t_int x_vwidth; + t_int x_vheight; + t_int x_vsize; + t_int x_csizex; + t_int x_csizey; + t_int x_csizev; + unsigned int x_encoding; + + int x_cropx1; + int x_cropx2; + int x_cropy1; + int x_cropy2; + +} t_pdp_cropper; + +static void pdp_cropper_cropx1(t_pdp_cropper *x, t_floatarg fcropx1 ) +{ + if ( ( fcropx1>=0 ) && ( fcropx1<x->x_vwidth ) ) + { + x->x_cropx1 = (t_int)fcropx1; + } +} + +static void pdp_cropper_cropx2(t_pdp_cropper *x, t_floatarg fcropx2 ) +{ + if ( ( fcropx2>=0 ) && ( fcropx2<x->x_vwidth ) ) + { + x->x_cropx2 = (t_int)fcropx2; + } +} + +static void pdp_cropper_cropy1(t_pdp_cropper *x, t_floatarg fcropy1 ) +{ + if ( ( fcropy1>=0 ) && ( fcropy1<x->x_vheight ) ) + { + x->x_cropy1 = (t_int)fcropy1; + } +} + +static void pdp_cropper_cropy2(t_pdp_cropper *x, t_floatarg fcropy2 ) +{ + if ( ( fcropy2>=0 ) && ( fcropy2<x->x_vheight ) ) + { + x->x_cropy2 = (t_int)fcropy2; + } +} + +static void pdp_cropper_process_yv12(t_pdp_cropper *x) +{ + t_pdp *header = pdp_packet_header(x->x_packet0); + short int *data = (short int *)pdp_packet_data(x->x_packet0); + t_pdp *newheader = NULL; + short int *newdata = NULL; + int i; + + int px, py; + short int *pY, *pU, *pV; + short int *pnY, *pnU, *pnV; + int minx, maxx; + int miny, maxy; + + /* allocate all ressources */ + if ( ( (t_int)header->info.image.width != x->x_vwidth ) || + ( (t_int)header->info.image.height != x->x_vheight ) ) + { + x->x_vwidth = header->info.image.width; + x->x_vheight = header->info.image.height; + x->x_vsize = x->x_vwidth*x->x_vheight; + if ( ( x->x_cropx1 <0 ) || ( x->x_cropx1 >= x->x_vwidth ) ) x->x_cropx1 = 0; + if ( ( x->x_cropx2 <0 ) || ( x->x_cropx2 >= x->x_vwidth ) ) x->x_cropx2 = x->x_vwidth-1; + if ( ( x->x_cropy1 <0 ) || ( x->x_cropy1 >= x->x_vheight ) ) x->x_cropy1 = 0; + if ( ( x->x_cropy2 <0 ) || ( x->x_cropy2 >= x->x_vheight ) ) x->x_cropy2 = x->x_vheight-1; + } + + x->x_csizex = abs ( x->x_cropx2 - x->x_cropx1 ); + if ( x->x_csizex%8 != 0 ) x->x_csizex = x->x_csizex + (8-(x->x_csizex%8)); // align on 8 + x->x_csizey = abs ( x->x_cropy2 - x->x_cropy1 ); + if ( x->x_csizey%8 != 0 ) x->x_csizey = x->x_csizey + (8-(x->x_csizey%8)); // align on 8 + if ( x->x_csizex == 0 ) x->x_csizex = 8; + if ( x->x_csizey == 0 ) x->x_csizey = 8; + // post( "pdp_cropper : new image %dx%d", x->x_csizex, x->x_csizey ); + + x->x_csizev = x->x_csizex*x->x_csizey; + x->x_packet1 = pdp_packet_new_image_YCrCb( x->x_csizex, x->x_csizey ); + newheader = pdp_packet_header(x->x_packet1); + newdata = (short int *)pdp_packet_data(x->x_packet1); + + newheader->info.image.encoding = header->info.image.encoding; + newheader->info.image.width = x->x_csizex; + newheader->info.image.height = x->x_csizey; + + pY = data; + pU = (data+x->x_vsize); + pV = (data+x->x_vsize+(x->x_vsize>>2)); + pnY = newdata; + pnU = (newdata+x->x_csizev); + pnV = (newdata+x->x_csizev+(x->x_csizev>>2)); + + if ( x->x_cropx1<x->x_cropx2 ) + { + minx = x->x_cropx1; + maxx = x->x_cropx2; + } + else + { + minx = x->x_cropx2; + maxx = x->x_cropx1; + } + + if ( x->x_cropy1<x->x_cropy2 ) + { + miny = x->x_cropy1; + maxy = x->x_cropy2; + } + else + { + miny = x->x_cropy2; + maxy = x->x_cropy1; + } + + for(py=miny; py<maxy; py++) + { + for(px=minx; px<maxx; px++) + { + *(pnY+(py-miny)*x->x_csizex+(px-minx)) = *(pY+py*x->x_vwidth+px); + if ( (py%2==0) && (px%2==0) ) + { + *(pnU+((py-miny)>>1)*(x->x_csizex>>1)+((px-minx)>>1)) = *(pU+(py>>1)*(x->x_vwidth>>1)+(px>>1)); + *(pnV+((py-miny)>>1)*(x->x_csizex>>1)+((px-minx)>>1)) = *(pV+(py>>1)*(x->x_vwidth>>1)+(px>>1)); + } + } + } + + return; +} + +static void pdp_cropper_sendpacket(t_pdp_cropper *x) +{ + /* release the 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_cropper_process(t_pdp_cropper *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_cropper_process inputs and write into active inlet */ + switch(pdp_packet_header(x->x_packet0)->info.image.encoding){ + + case PDP_IMAGE_YV12: + pdp_queue_add(x, pdp_cropper_process_yv12, pdp_cropper_sendpacket, &x->x_queue_id); + break; + + case PDP_IMAGE_GREY: + // pdp_cropper_process_packet(x); + break; + + default: + /* don't know the type, so dont pdp_cropper_process */ + break; + + } + } +} + +static void pdp_cropper_input_0(t_pdp_cropper *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_cropper_process(x); + } +} + +static void pdp_cropper_free(t_pdp_cropper *x) +{ + int i; + + pdp_queue_finish(x->x_queue_id); + pdp_packet_mark_unused(x->x_packet0); +} + +t_class *pdp_cropper_class; + +void *pdp_cropper_new(void) +{ + int i; + + t_pdp_cropper *x = (t_pdp_cropper *)pd_new(pdp_cropper_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("x1")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("x2")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("y1")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("y2")); + + 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_cropx1=-1; + x->x_cropx2=-1; + x->x_cropy1=-1; + x->x_cropy2=-1; + + return (void *)x; +} + + +#ifdef __cplusplus +extern "C" +{ +#endif + + +void pdp_cropper_setup(void) +{ +// post( pdp_cropper_version ); + pdp_cropper_class = class_new(gensym("pdp_cropper"), (t_newmethod)pdp_cropper_new, + (t_method)pdp_cropper_free, sizeof(t_pdp_cropper), 0, A_NULL); + + class_addmethod(pdp_cropper_class, (t_method)pdp_cropper_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL); + class_addmethod(pdp_cropper_class, (t_method)pdp_cropper_cropx1, gensym("x1"), A_FLOAT, A_NULL); + class_addmethod(pdp_cropper_class, (t_method)pdp_cropper_cropx2, gensym("x2"), A_FLOAT, A_NULL); + class_addmethod(pdp_cropper_class, (t_method)pdp_cropper_cropy1, gensym("y1"), A_FLOAT, A_NULL); + class_addmethod(pdp_cropper_class, (t_method)pdp_cropper_cropy2, gensym("y2"), A_FLOAT, A_NULL); + class_sethelpsymbol( pdp_cropper_class, gensym("pdp_cropper.pd") ); +} + +#ifdef __cplusplus +} +#endif |