/* * Pure Data Packet module. * Copyright (c) by Tom Schouten * * 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. * */ #include "pdp.h" #include #define BUFSIZE 2048 typedef struct pdp_scope_data { short int random_seed[4]; }t_pdp_scope_data; typedef struct pdp_scope_struct { t_object x_obj; t_float x_f; t_outlet *x_outlet0; t_pdp_scope_data *x_data; int x_packet0; int x_queue_id; int x_pdp_image_type; unsigned int x_width; unsigned int x_height; float *x_buffer; int x_needle; } t_pdp_scope; void pdp_scope_type(t_pdp_scope *x, t_symbol *s) { if (gensym("yv12") == s) {x->x_pdp_image_type = PDP_IMAGE_YV12; return;} if (gensym("grey") == s) {x->x_pdp_image_type = PDP_IMAGE_GREY; return;} x->x_pdp_image_type = -1; } static void pdp_scope_createpacket_yv12(t_pdp_scope *x) { t_pdp *header; unsigned int w = x->x_width; unsigned int h = x->x_height; unsigned int size = w*h; unsigned int totalnbpixels = size + (size >> 1); unsigned int packet_size = totalnbpixels << 1; x->x_packet0 = pdp_packet_new(PDP_IMAGE, packet_size); header = pdp_packet_header(x->x_packet0); header->info.image.encoding = PDP_IMAGE_YV12; header->info.image.width = w; header->info.image.height = h; memset(pdp_packet_data(x->x_packet0), 0, packet_size); } static void pdp_scope_generate_yv12(t_pdp_scope *x) { unsigned int w = x->x_width; unsigned int h = x->x_height; unsigned int size = w*h; unsigned int totalnbpixels = size + (size >> 1); short int *data = (short int *) pdp_packet_data(x->x_packet0); unsigned int i; int offset = x->x_needle; int val; unsigned int y; float fh2 = (float)(h/2); for (i=0; ix_buffer[(offset - w + i) & (BUFSIZE - 1)]); if (y>=h) y = h-1; data[i + y*w] = 0x7fff; } return; } static void pdp_scope_createpacket_grey(t_pdp_scope *x) { t_pdp *header; short int *data; unsigned int w = x->x_width; unsigned int h = x->x_height; unsigned int size = w*h; unsigned int totalnbpixels = size; unsigned int packet_size = totalnbpixels << 1; /* create new packet */ x->x_packet0 = pdp_packet_new(PDP_IMAGE, packet_size); header = pdp_packet_header(x->x_packet0); data = (short int *) pdp_packet_data(x->x_packet0); header->info.image.encoding = PDP_IMAGE_GREY; header->info.image.width = w; header->info.image.height = h; memset(pdp_packet_data(x->x_packet0), 0, packet_size); } static void pdp_scope_generate_grey(t_pdp_scope *x) { unsigned int w = x->x_width; unsigned int h = x->x_height; unsigned int totalnbpixels = x->x_width * x->x_height; short int *data = (short int *) pdp_packet_data(x->x_packet0); unsigned int i; int offset = x->x_needle; int val; unsigned int y; float fh2 = (float)(h/2); for (i=0; ix_buffer[(offset - w + i) & (BUFSIZE - 1)]); if (y>=h) y = h-1; data[i + y*w] = 0x7fff; } return; } static void pdp_scope_sendpacket(t_pdp_scope *x) { /* propagate if valid */ pdp_pass_if_valid(x->x_outlet0, &x->x_packet0); } static void pdp_scope_bang(t_pdp_scope *x) { int encoding; /* if we have an active packet, don't do anything */ if (-1 != x->x_packet0) return; switch(x->x_pdp_image_type){ case PDP_IMAGE_YV12: pdp_scope_createpacket_yv12(x); // don't create inside thread!!! pdp_scope_generate_yv12(x); pdp_scope_sendpacket(x); //pdp_queue_add(x, pdp_scope_generate_yv12, pdp_scope_sendpacket, &x->x_queue_id); break; case PDP_IMAGE_GREY: pdp_scope_createpacket_grey(x); // don't create inside thread!!! pdp_scope_generate_grey(x); pdp_scope_sendpacket(x); //pdp_queue_add(x, pdp_scope_generate_grey, pdp_scope_sendpacket, &x->x_queue_id); break; default: break; } /* release the packet */ } static void pdp_scope_dim(t_pdp_scope *x, t_floatarg w, t_floatarg h) { if (w<32.0f) w = 32.0f; if (h<32.0f) h = 32.0f; x->x_width = (unsigned int)w; x->x_height = (unsigned int)h; } static void pdp_scope_free(t_pdp_scope *x) { /* remove callback from process queue */ pdp_queue_finish(x->x_queue_id); /* tidy up */ pdp_packet_mark_unused(x->x_packet0); free(x->x_data); } static t_int *pdp_scope_perform(t_int *w) { t_float *in = (float *)(w[3]); t_pdp_scope *x = (t_pdp_scope *)(w[1]); t_int n = (t_int)(w[2]); t_int i; t_int offset = x->x_needle; for (i=0; ix_buffer[(offset+i)&(BUFSIZE-1)] = in[i]; x->x_needle = (offset + n ) & (BUFSIZE - 1); return (w+4); } static void pdp_scope_dsp(t_pdp_scope *x, t_signal **sp) { dsp_add(pdp_scope_perform, 3, x, sp[0]->s_n, sp[0]->s_vec); } t_class *pdp_scope_class; void *pdp_scope_new(void) { int i; t_pdp_scope *x = (t_pdp_scope *)pd_new(pdp_scope_class); x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); x->x_packet0 = -1; x->x_queue_id = -1; x->x_width = 320; x->x_height = 240; x->x_f = 0.0; x->x_data = (t_pdp_scope_data *)malloc(sizeof(t_pdp_scope_data)); pdp_scope_type(x, gensym("yv12")); x->x_buffer = (float *)malloc(sizeof(float) * BUFSIZE); x->x_needle = 0; return (void *)x; } #ifdef __cplusplus extern "C" { #endif void pdp_scope_setup(void) { pdp_scope_class = class_new(gensym("pdp_scope~"), (t_newmethod)pdp_scope_new, (t_method)pdp_scope_free, sizeof(t_pdp_scope), 0, A_NULL); CLASS_MAINSIGNALIN(pdp_scope_class, t_pdp_scope, x_f); class_addmethod(pdp_scope_class, (t_method)pdp_scope_type, gensym("type"), A_SYMBOL, A_NULL); class_addmethod(pdp_scope_class, (t_method)pdp_scope_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL); class_addmethod(pdp_scope_class, (t_method)pdp_scope_bang, gensym("bang"), A_NULL); class_addmethod(pdp_scope_class, (t_method)pdp_scope_dsp, gensym("dsp"), 0); } #ifdef __cplusplus } #endif