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authorHans-Christoph Steiner <eighthave@users.sourceforge.net>2005-11-28 01:07:25 +0000
committerHans-Christoph Steiner <eighthave@users.sourceforge.net>2005-11-28 01:07:25 +0000
commitc50ce0e0217ea07e2d450add2ab29cecea66fa96 (patch)
tree0700e1e5fd14ff99e5a4c6d4b4937268a1d9804f /modules/generic
parentd7f71f87b112317d8303f25b4a536b943ea59d97 (diff)
This commit was generated by cvs2svn to compensate for changes in r4059,
which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/pdp/; revision=4060
Diffstat (limited to 'modules/generic')
-rw-r--r--modules/generic/pdp_rawin.c299
-rw-r--r--modules/generic/pdp_rawout.c320
-rw-r--r--modules/generic/pdp_udp_receive.c203
-rw-r--r--modules/generic/pdp_udp_send.c336
4 files changed, 1158 insertions, 0 deletions
diff --git a/modules/generic/pdp_rawin.c b/modules/generic/pdp_rawin.c
new file mode 100644
index 0000000..28ef8fb
--- /dev/null
+++ b/modules/generic/pdp_rawin.c
@@ -0,0 +1,299 @@
+/*
+ * Pure Data Packet module. packet forth console
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * 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 <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <time.h>
+#include <fcntl.h>
+#include "pdp_pd.h"
+#include "pdp_debug.h"
+#include "pdp_list.h"
+#include "pdp_comm.h"
+#include "pdp_post.h"
+#include "pdp_packet.h"
+
+
+#define PERIOD 1.0f
+#define D if (1)
+
+
+
+
+/* raw input from a unix pipe */
+
+typedef struct rawin_struct
+{
+ /* pd */
+ t_object x_obj;
+ t_outlet *x_outlet;
+ t_outlet *x_sync_outlet;
+ t_clock *x_clock;
+
+ /* comm */
+ t_pdp_list *x_queue; // packet queue
+
+ /* thread */
+ pthread_mutex_t x_mut;
+ pthread_attr_t x_attr;
+ pthread_t x_thread;
+
+ /* sync */
+ int x_giveup; // 1-> terminate reader thread
+ int x_active; // 1-> reader thread is launched
+ int x_done; // 1-> reader thread has exited
+
+ /* config */
+ t_symbol *x_pipe;
+ t_pdp_symbol *x_type;
+
+} t_rawin;
+
+
+static inline void lock(t_rawin *x){pthread_mutex_lock(&x->x_mut);}
+static inline void unlock(t_rawin *x){pthread_mutex_unlock(&x->x_mut);}
+
+static void rawin_close(t_rawin *x);
+static void tick(t_rawin *x)
+{
+ /* send all packets in queue to outlet */
+ lock(x);
+ while (x->x_queue->elements){
+ outlet_pdp_atom(x->x_outlet, x->x_queue->first);
+ pdp_list_pop(x->x_queue); // pop stale reference
+ }
+ unlock(x);
+ clock_delay(x->x_clock, PERIOD);
+
+ /* check if thread is done */
+ if (x->x_done) rawin_close(x);
+
+}
+
+static void move_current_to_queue(t_rawin *x, int packet)
+{
+ lock(x);
+ pdp_list_add_back(x->x_queue, a_packet, (t_pdp_word)packet);
+ unlock(x);
+}
+
+static void *rawin_thread(void *y)
+{
+ int pipe;
+ int packet = -1;
+ t_rawin *x = (t_rawin *)y;
+ int period_sec;
+ int period_usec;
+
+
+ //D pdp_post("pipe: %s", x->x_pipe->s_name);
+ //D pdp_post("type: %s", x->x_type->s_name);
+
+ /* open pipe */
+ if (-1 == (pipe = open(x->x_pipe->s_name, O_RDONLY|O_NONBLOCK))){
+ perror(x->x_pipe->s_name);
+ goto exit;
+ }
+
+ /* main loop (packets) */
+ while(1){
+ void *data = 0;
+ int left = -1;
+
+ /* create packet */
+ if (-1 != packet){
+ pdp_post("WARNING: deleting stale packet");
+ pdp_packet_mark_unused(packet);
+ }
+ packet = pdp_factory_newpacket(x->x_type);
+ if (-1 == packet){
+ pdp_post("ERROR: can't create packet. type = %s", x->x_type->s_name);
+ goto exit;
+ }
+
+ /* fill packet */
+ data = pdp_packet_data(packet);
+ left = pdp_packet_data_size(packet);
+ // D pdp_post("packet %d, data %x, size %d", packet, data, left);
+
+ /* inner loop: pipe reads */
+ while(left){
+
+ fd_set inset;
+ struct timeval tv = {0,10000};
+
+ /* check if we need to stop */
+ if (x->x_giveup){
+ pdp_packet_mark_unused(packet);
+ goto close;
+ }
+ /* select, with timeout */
+ FD_ZERO(&inset);
+ FD_SET(pipe, &inset);
+ if (-1 == select(pipe+1, &inset, NULL,NULL, &tv)){
+ pdp_post("select error");
+ goto close;
+ }
+
+ /* if ready, read, else retry */
+ if (FD_ISSET(pipe, &inset)){
+ int bytes = read(pipe, data, left);
+ if (!bytes){
+ /* if no bytes are read, pipe is closed */
+ goto close;
+ }
+ data += bytes;
+ left -= bytes;
+ }
+ }
+
+ /* move to queue */
+ move_current_to_queue(x, packet);
+ packet = -1;
+
+
+
+ }
+
+ close:
+ /* close pipe */
+ close(pipe);
+
+
+ exit:
+ x->x_done = 1;
+ return 0;
+}
+
+
+
+static void rawin_type(t_rawin *x, t_symbol *type)
+{
+ x->x_type = pdp_gensym(type->s_name);
+}
+
+static void rawin_open(t_rawin *x, t_symbol *pipe)
+{
+ /* save pipe name if not empty */
+ if (pipe->s_name[0]) {x->x_pipe = pipe;}
+
+ if (x->x_active) {
+ pdp_post("already open");
+ return;
+ }
+ /* start thread */
+ x->x_giveup = 0;
+ x->x_done = 0;
+ pthread_create(&x->x_thread, &x->x_attr, rawin_thread , x);
+ x->x_active = 1;
+}
+
+static void rawin_close(t_rawin *x)
+{
+
+ if (!x->x_active) return;
+
+ /* stop thread: set giveup + wait */
+ x->x_giveup = 1;
+ pthread_join(x->x_thread, NULL);
+ x->x_active = 0;
+
+ /* notify */
+ outlet_bang(x->x_sync_outlet);
+ pdp_post("connection to %s closed", x->x_pipe->s_name);
+
+
+
+
+
+}
+
+static void rawin_free(t_rawin *x)
+{
+ rawin_close(x);
+ clock_free(x->x_clock);
+ pdp_tree_strip_packets(x->x_queue);
+ pdp_tree_free(x->x_queue);
+}
+
+t_class *rawin_class;
+
+
+static void *rawin_new(t_symbol *pipe, t_symbol *type)
+{
+ t_rawin *x;
+
+ pdp_post("%s %s", pipe->s_name, type->s_name);
+
+ /* allocate & init */
+ x = (t_rawin *)pd_new(rawin_class);
+ x->x_outlet = outlet_new(&x->x_obj, &s_anything);
+ x->x_sync_outlet = outlet_new(&x->x_obj, &s_anything);
+ x->x_clock = clock_new(x, (t_method)tick);
+ x->x_queue = pdp_list_new(0);
+ x->x_active = 0;
+ x->x_giveup = 0;
+ x->x_done = 0;
+ x->x_type = pdp_gensym("image/YCrCb/320x240"); //default
+ x->x_pipe = gensym("/tmp/pdpraw"); // default
+ pthread_attr_init(&x->x_attr);
+ pthread_mutex_init(&x->x_mut, NULL);
+ clock_delay(x->x_clock, PERIOD);
+
+ /* args */
+ rawin_type(x, type);
+ if (pipe->s_name[0]) x->x_pipe = pipe;
+
+ return (void *)x;
+
+}
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_rawin_setup(void)
+{
+ int i;
+
+ /* create a standard pd class: [pdp_rawin pipe type] */
+ rawin_class = class_new(gensym("pdp_rawin"), (t_newmethod)rawin_new,
+ (t_method)rawin_free, sizeof(t_rawin), 0, A_DEFSYMBOL, A_DEFSYMBOL, A_NULL);
+
+ /* add global message handler */
+ class_addmethod(rawin_class, (t_method)rawin_type, gensym("type"), A_SYMBOL, A_NULL);
+ class_addmethod(rawin_class, (t_method)rawin_open, gensym("open"), A_DEFSYMBOL, A_NULL);
+ class_addmethod(rawin_class, (t_method)rawin_close, gensym("close"), A_NULL);
+
+
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/modules/generic/pdp_rawout.c b/modules/generic/pdp_rawout.c
new file mode 100644
index 0000000..e1e9edf
--- /dev/null
+++ b/modules/generic/pdp_rawout.c
@@ -0,0 +1,320 @@
+/*
+ * Pure Data Packet module. packet forth console
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * 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 <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <time.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+#include "pdp_pd.h"
+#include "pdp_debug.h"
+#include "pdp_list.h"
+#include "pdp_comm.h"
+#include "pdp_post.h"
+#include "pdp_packet.h"
+
+
+#define D if (1)
+#define MAX_QUEUESIZE 4
+#define PIPE_BLOCKSIZE 4096
+
+
+
+
+/* raw input from a unix pipe */
+
+typedef struct rawout_struct
+{
+ /* pd */
+ t_object x_obj;
+ //t_outlet *x_outlet;
+ t_outlet *x_sync_outlet;
+
+ /* comm */
+ t_pdp_list *x_queue; // packet queue
+
+ /* thread */
+ pthread_mutex_t x_mut;
+ pthread_attr_t x_attr;
+ pthread_t x_thread;
+
+ /* sync */
+ int x_giveup; // 1-> terminate writer thread
+ int x_active; // 1-> writer thread is launched
+ int x_done; // 1-> writer thread has exited
+
+ /* config */
+ t_symbol *x_pipe;
+ t_pdp_symbol *x_type;
+
+} t_rawout;
+
+
+static inline void lock(t_rawout *x){pthread_mutex_lock(&x->x_mut);}
+static inline void unlock(t_rawout *x){pthread_mutex_unlock(&x->x_mut);}
+
+static void rawout_close(t_rawout *x);
+static void pdp_in(t_rawout *x, t_symbol *s, t_float f)
+{
+ /* save packet to pdp queue, if size is smaller than maxsize */
+ if (s == S_REGISTER_RO){
+ if (x->x_queue->elements < MAX_QUEUESIZE){
+ int p = (int)f;
+ p = pdp_packet_copy_ro(p);
+ if (p != -1){
+ lock(x);
+ pdp_list_add_back(x->x_queue, a_packet, (t_pdp_word)p);
+ unlock(x);
+ }
+ }
+ else {
+ pdp_post("pdp_rawout: dropping packet: (queue full)", MAX_QUEUESIZE);
+ }
+
+ }
+
+ /* check if thread is done */
+ if (x->x_done) rawout_close(x);
+
+}
+
+
+
+static void *rawout_thread(void *y)
+{
+ int pipe;
+ int packet = -1;
+ t_rawout *x = (t_rawout *)y;
+ int period_sec;
+ int period_usec;
+ sigset_t sigvec; /* signal handling */
+
+ /* ignore pipe signal */
+ sigemptyset(&sigvec);
+ sigaddset(&sigvec,SIGPIPE);
+ pthread_sigmask(SIG_BLOCK, &sigvec, 0);
+
+ //D pdp_post("pipe: %s", x->x_pipe->s_name);
+ //D pdp_post("type: %s", x->x_type->s_name);
+
+ /* open pipe */
+ if (-1 == (pipe = open(x->x_pipe->s_name, O_WRONLY|O_NONBLOCK))){
+ perror(x->x_pipe->s_name);
+ goto exit;
+ }
+
+ /* main loop (packets) */
+ while(1){
+ void *data = 0;
+ int left = -1;
+
+ /* try again if queue is empty */
+ if (!x->x_queue->elements){
+ /* check if we need to stop */
+ if (x->x_giveup){
+ goto close;
+ }
+ else {
+ usleep(1000.0f); // sleep before polling again
+ continue;
+ }
+ }
+ /* get packet from queue */
+ lock(x);
+ packet = pdp_list_pop(x->x_queue).w_packet;
+ unlock(x);
+
+ /* send packet */
+ data = pdp_packet_data(packet);
+ left = pdp_packet_data_size(packet);
+
+ /* inner loop: pipe reads */
+ while(left){
+
+ fd_set outset;
+ struct timeval tv = {0,10000};
+
+ /* check if we need to stop */
+ if (x->x_giveup){
+ pdp_packet_mark_unused(packet);
+ goto close;
+ }
+
+ /* select, with timeout */
+ FD_ZERO(&outset);
+ FD_SET(pipe, &outset);
+ if (-1 == select(pipe+1, NULL, &outset, NULL, &tv)){
+ pdp_post("select error");
+ goto close;
+ }
+
+ /* if ready, read, else retry */
+ if (FD_ISSET(pipe, &outset)){
+ int bytes = write(pipe, data, left);
+ /* handle errors */
+ if (bytes <= 0){
+ perror(x->x_pipe->s_name);
+ if (bytes != EAGAIN) goto close;
+ }
+ /* or update pointers */
+ else{
+ data += bytes;
+ left -= bytes;
+ //pdp_post("left %d", left);
+ }
+ }
+ else {
+ //pdp_post("retrying write");
+ }
+ }
+
+ /* discard packet */
+ pdp_packet_mark_unused(packet);
+
+
+ }
+
+ close:
+ /* close pipe */
+ close(pipe);
+
+
+ exit:
+ x->x_done = 1;
+ return 0;
+}
+
+
+
+static void rawout_type(t_rawout *x, t_symbol *type)
+{
+ x->x_type = pdp_gensym(type->s_name);
+}
+
+static void rawout_open(t_rawout *x, t_symbol *pipe)
+{
+ /* save pipe name if not empty */
+ if (pipe->s_name[0]) {x->x_pipe = pipe;}
+
+ if (x->x_active) {
+ pdp_post("already open");
+ return;
+ }
+ /* start thread */
+ x->x_giveup = 0;
+ x->x_done = 0;
+ pthread_create(&x->x_thread, &x->x_attr, rawout_thread , x);
+ x->x_active = 1;
+}
+
+static void rawout_close(t_rawout *x)
+{
+
+ if (!x->x_active) return;
+
+ /* stop thread: set giveup + wait */
+ x->x_giveup = 1;
+ pthread_join(x->x_thread, NULL);
+ x->x_active = 0;
+
+ /* notify */
+ outlet_bang(x->x_sync_outlet);
+ pdp_post("connection to %s closed", x->x_pipe->s_name);
+
+
+
+
+
+}
+
+static void rawout_free(t_rawout *x)
+{
+ rawout_close(x);
+ pdp_tree_strip_packets(x->x_queue);
+ pdp_tree_free(x->x_queue);
+}
+
+t_class *rawout_class;
+
+
+static void *rawout_new(t_symbol *pipe, t_symbol *type)
+{
+ t_rawout *x;
+
+ pdp_post("%s %s", pipe->s_name, type->s_name);
+
+ /* allocate & init */
+ x = (t_rawout *)pd_new(rawout_class);
+ //x->x_outlet = outlet_new(&x->x_obj, &s_anything);
+ x->x_sync_outlet = outlet_new(&x->x_obj, &s_anything);
+ x->x_queue = pdp_list_new(0);
+ x->x_active = 0;
+ x->x_giveup = 0;
+ x->x_done = 0;
+ x->x_type = pdp_gensym("image/YCrCb/320x240"); //default
+ x->x_pipe = gensym("/tmp/pdpraw"); // default
+ pthread_attr_init(&x->x_attr);
+ pthread_mutex_init(&x->x_mut, NULL);
+
+ /* args */
+ rawout_type(x, type);
+ if (pipe->s_name[0]) x->x_pipe = pipe;
+
+ return (void *)x;
+
+}
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_rawout_setup(void)
+{
+ int i;
+
+ /* create a standard pd class: [pdp_rawout pipe type] */
+ rawout_class = class_new(gensym("pdp_rawout"), (t_newmethod)rawout_new,
+ (t_method)rawout_free, sizeof(t_rawout), 0, A_DEFSYMBOL, A_DEFSYMBOL, A_NULL);
+
+ /* add global message handler */
+ class_addmethod(rawout_class, (t_method)pdp_in,
+ gensym("pdp"), A_SYMBOL, A_FLOAT, A_NULL);
+
+ class_addmethod(rawout_class, (t_method)rawout_type, gensym("type"), A_SYMBOL, A_NULL);
+ class_addmethod(rawout_class, (t_method)rawout_open, gensym("open"), A_DEFSYMBOL, A_NULL);
+ class_addmethod(rawout_class, (t_method)rawout_close, gensym("close"), A_NULL);
+
+
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/modules/generic/pdp_udp_receive.c b/modules/generic/pdp_udp_receive.c
new file mode 100644
index 0000000..3d42466
--- /dev/null
+++ b/modules/generic/pdp_udp_receive.c
@@ -0,0 +1,203 @@
+/*
+ * Pure Data Packet module.
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * 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 module sends receives an udp packet stream and converts to pdp packet */
+
+#include "pdp_net.h"
+#include "pdp.h"
+#include "pdp_resample.h"
+
+#define D if(0)
+
+typedef struct pdp_udp_receive_struct
+{
+
+ t_object x_obj;
+ t_float x_f;
+
+ /* receiver object */
+ t_pdp_udp_receiver *x_receiver;
+
+
+ /* thread vars */
+ pthread_attr_t x_attr;
+ pthread_t x_thread;
+ int x_exit_thread;
+
+ /* packet queue */
+ int x_index;
+ int x_packet[2];
+
+ /* polling clock */
+ t_clock *x_clock;
+ /* outlet */
+ t_outlet *x_outlet0;
+
+} t_pdp_udp_receive;
+
+
+static void clock_tick(t_pdp_udp_receive *x)
+{
+ /* poll for new packet */
+
+ pdp_pass_if_valid(x->x_outlet0, &x->x_packet[!x->x_index]);
+ clock_delay(x->x_clock, 1.0f);
+}
+
+
+
+
+static void *receive_thread(void *threaddata)
+{
+ t_pdp_udp_receive *x = (t_pdp_udp_receive *)threaddata;
+ t_pdp *pdp_header = 0;
+ void *pdp_data = 0;
+ int tmp_packet = -1;
+ char *type = 0;
+ unsigned int size = 0;
+
+ /* listen for packets */
+ while (!x->x_exit_thread){
+
+
+ switch(pdp_udp_receiver_receive(x->x_receiver, 100)){
+ case -1:
+ /* error */
+ goto exit;
+ case 0:
+ /* timeout */
+ continue;
+ case 1:
+ /* data ready */
+ break;
+ }
+
+ /* create a new packet */
+ type = pdp_udp_receiver_type(x->x_receiver);
+ tmp_packet = pdp_factory_newpacket(pdp_gensym(type));
+ pdp_header = pdp_packet_header(tmp_packet);
+ pdp_data = pdp_packet_data(tmp_packet);
+
+ /* check if we were able to create the pdp packet */
+ if (!(pdp_header && pdp_data)){
+ post("pdp_netreceive: can't create packet (type %s)", type);
+ pdp_udp_receiver_reset(x->x_receiver);
+ continue;
+ }
+
+ /* check size */
+ size = pdp_udp_receiver_size(x->x_receiver);
+ if ((pdp_header->size - PDP_HEADER_SIZE) != size){
+ pdp_packet_mark_unused(tmp_packet);
+ tmp_packet = -1;
+ post("pdp_netreceive: invalid packet size %d (pdp packet size = %d)",
+ size, pdp_header->size - PDP_HEADER_SIZE);
+ continue;
+ }
+
+ /* copy the data */
+ memcpy(pdp_data, pdp_udp_receiver_data(x->x_receiver), size);
+
+ /* copy the packet into queue */
+ x->x_index ^= 1;
+ pdp_packet_mark_unused(x->x_packet[x->x_index]);
+ x->x_packet[x->x_index] = tmp_packet;
+
+
+ }
+
+ exit:
+ post("thread exiting");
+ return 0;
+}
+
+
+static void pdp_udp_receive_free(t_pdp_udp_receive *x)
+{
+ int i;
+ void* retval;
+ x->x_exit_thread = 1; // wait for thread to finish
+ pthread_join(x->x_thread, &retval);
+
+ pdp_udp_receiver_free(x->x_receiver);
+
+ pdp_packet_mark_unused(x->x_packet[0]);
+ pdp_packet_mark_unused(x->x_packet[1]);
+
+}
+
+t_class *pdp_udp_receive_class;
+
+
+
+void *pdp_udp_receive_new(t_floatarg fport)
+{
+ int i;
+ int port;
+ struct hostent *hp;
+
+ t_pdp_udp_receive *x = (t_pdp_udp_receive *)pd_new(pdp_udp_receive_class);
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_packet[0] = -1;
+ x->x_packet[1] = -1;
+ x->x_index = 0;
+
+ port = (fport == 0.0f) ? 7777 : fport;
+ x->x_receiver = pdp_udp_receiver_new(port);
+
+ /* setup thread stuff & create thread */
+ x->x_exit_thread = 0;
+ pthread_attr_init(&x->x_attr);
+ pthread_attr_setschedpolicy(&x->x_attr, SCHED_OTHER);
+ pthread_create(&x->x_thread, &x->x_attr, receive_thread, x);
+
+
+ /* setup the clock */
+ x->x_clock = clock_new(x, (t_method)clock_tick);
+ clock_delay(x->x_clock, 0);
+
+ post("pdp_netreceive: WARNING: experimental object");
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_udp_receive_setup(void)
+{
+
+
+ pdp_udp_receive_class = class_new(gensym("pdp_netreceive"), (t_newmethod)pdp_udp_receive_new,
+ (t_method)pdp_udp_receive_free, sizeof(t_pdp_udp_receive), 0, A_DEFFLOAT, A_NULL);
+
+
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/modules/generic/pdp_udp_send.c b/modules/generic/pdp_udp_send.c
new file mode 100644
index 0000000..cb55ad1
--- /dev/null
+++ b/modules/generic/pdp_udp_send.c
@@ -0,0 +1,336 @@
+/*
+ * Pure Data Packet module.
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * 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 module sends a pure packet out as an udp packet stream */
+
+#include "pdp_net.h"
+#include "pdp.h"
+#include "pdp_resample.h"
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <netdb.h>
+
+#define DD if(0) // print DROP debug info
+#define D if(0) // print extra connection debug info
+#define V if(0) // be verbose (parameter setting feedback)
+
+typedef struct pdp_udp_send_struct
+{
+
+ t_object x_obj;
+ t_float x_f;
+
+ /* sender object */
+ t_pdp_udp_sender *x_sender;
+
+ /* pthread vars */
+ pthread_mutex_t x_mut;
+ pthread_cond_t x_cond_data_ready;
+ pthread_cond_t x_cond_send_done;
+ pthread_t x_thread;
+ int x_exit_thread;
+
+ // drop info
+ unsigned int x_drop;
+
+ t_outlet *x_outlet0;
+
+ // packet queue
+ int x_nb_packets;
+ int x_read_packet;
+ int x_write_packet;
+ int *x_packet;
+
+
+} t_pdp_udp_send;
+
+
+
+
+
+/* some synchro code */
+
+static int _wait_for_feeder(t_pdp_udp_send *x)
+{
+
+ /* only use locking when there is no data */
+ if (x->x_packet[x->x_read_packet] == -1){
+
+ /* signal sending is done */
+ pthread_mutex_lock(&x->x_mut);
+ pthread_cond_signal(&x->x_cond_send_done);
+
+ /* wait until there is an item in the queue */
+ while((x->x_packet[x->x_read_packet] == -1) && (!x->x_exit_thread)){
+ pthread_cond_wait(&x->x_cond_data_ready, &x->x_mut);
+ }
+ pthread_mutex_unlock(&x->x_mut);
+
+ /* check if we need to stop the thread */
+ if (x->x_exit_thread) return 0;
+
+ }
+
+ return !x->x_exit_thread;
+}
+
+static void _signal_sender(t_pdp_udp_send *x)
+{
+
+ pthread_mutex_lock(&x->x_mut);
+ pthread_cond_signal(&x->x_cond_data_ready);
+ pthread_mutex_unlock(&x->x_mut);
+}
+
+static void _wait_until_done(t_pdp_udp_send *x)
+{
+ pthread_mutex_lock(&x->x_mut);
+ while (x->x_packet[x->x_read_packet] != -1){
+ pthread_cond_wait(&x->x_cond_send_done, &x->x_mut);
+ }
+ pthread_mutex_unlock(&x->x_mut);
+}
+
+
+static void _remove_packet_from_queue(t_pdp_udp_send *x)
+{
+
+}
+
+
+
+
+
+static void *send_thread(void *threaddata)
+{
+ t_pdp_udp_send *x = (t_pdp_udp_send *)threaddata;
+
+ /* main thread loop */
+
+ /* get a pdp packet from queue */
+ /* send header packet and make sure it has arrived */
+ /* send a chunk burst */
+ /* send done packet and get the resend list */
+ /* repeat until send list is empty */
+
+ while (_wait_for_feeder(x)){
+ t_pdp *header;
+ void *data;
+
+ /* check if we have a valid pdp packet */
+ if ((!(header = pdp_packet_header(x->x_packet[x->x_read_packet])))
+ ||(!(data = pdp_packet_data(x->x_packet[x->x_read_packet])))
+ ||(0 == header->desc)) goto remove; /* nothing to transmit */
+
+ /* send it */
+ pdp_udp_sender_send(x->x_sender,
+ header->desc->s_name,
+ header->size - PDP_HEADER_SIZE, data);
+
+
+ remove:
+ /* remove packet from queue */
+ pdp_packet_mark_unused(x->x_packet[x->x_read_packet]);
+ x->x_packet[x->x_read_packet] = -1;
+ x->x_read_packet++;
+ x->x_read_packet %= x->x_nb_packets;
+
+ }
+ return 0;
+}
+
+
+static void pdp_udp_send_input_0(t_pdp_udp_send *x, t_symbol *s, t_floatarg f)
+{
+
+ int p = (int)f;
+ int my_p;
+ int transferred = 0;
+
+ if (s== gensym("register_ro")){
+
+
+ // check if packet can be stored in the queue
+ // this is possible if the current write location does not contain a packet
+
+ if (x->x_packet[x->x_write_packet] == -1){
+
+ // get the packet outside of the lock
+ my_p = pdp_packet_copy_ro(p);
+
+
+ // add to queue (do we really need to lock here?>
+ //pthread_mutex_lock(&x->x_mut); // LOCK
+ x->x_packet[x->x_write_packet] = my_p;
+ x->x_write_packet++;
+ x->x_write_packet %= x->x_nb_packets;
+ transferred = 1;
+ //pthread_mutex_unlock(&x->x_mut); // UNLOCK
+ }
+
+ // signal sender if transfer succeded
+ if (transferred) _signal_sender(x);
+
+ // else send a float indicating the number of drops so far
+ else{
+ x->x_drop++;
+ //outlet_float(x->x_outlet0, (float)x->x_drop);
+
+ DD post ("pdp_netsend: DROP: queue full");
+ }
+ }
+}
+
+
+
+/* some flow control hacks */
+
+static void pdp_udp_send_timeout(t_pdp_udp_send *x, float f)
+{
+ if (f < 0.0f) f = 0.0f;
+ pdp_udp_sender_timeout_us(x->x_sender, 1000.0f * f);
+}
+
+
+static void pdp_udp_send_sleepgrain(t_pdp_udp_send *x, float f)
+{
+ if (f < 0.0f) f = 0.0f;
+ pdp_udp_sender_sleepgrain_us(x->x_sender, 1000.0f * f);
+}
+
+static void pdp_udp_send_sleepperiod(t_pdp_udp_send *x, float f)
+{
+ if (f < 0.0f) f = 0.0f;
+ pdp_udp_sender_sleepperiod(x->x_sender, f);
+}
+
+
+static void pdp_udp_send_udpsize(t_pdp_udp_send *x, float f)
+{
+ if (f < 0.0f) f = 0.0f;
+ pdp_udp_sender_udp_packet_size(x->x_sender, f);
+}
+
+static void pdp_udp_send_connect(t_pdp_udp_send *x, t_symbol *shost, t_float fport)
+{
+ unsigned int port;
+ struct hostent *hp;
+
+ /* suspend until sending thread is finished */
+ _wait_until_done(x);
+
+ /* set target address */
+ port = (fport == 0.0f) ? 7777 : fport;
+ if (shost == gensym("")) shost = gensym("127.0.0.1");
+
+ /* connect */
+ pdp_udp_sender_connect(x->x_sender, shost->s_name, port);
+
+}
+
+
+static void pdp_udp_send_free(t_pdp_udp_send *x)
+{
+ int i;
+ void* retval;
+ _wait_until_done(x); // send all remaining packets
+ x->x_exit_thread = 1; // .. and wait for thread to finish
+ _signal_sender(x);
+ pthread_join(x->x_thread, &retval);
+
+ pdp_udp_sender_free(x->x_sender);
+
+
+ for (i=0; i<x->x_nb_packets; i++) pdp_packet_mark_unused(x->x_packet[i]);
+ pdp_dealloc(x->x_packet);
+
+}
+
+t_class *pdp_udp_send_class;
+
+
+
+void *pdp_udp_send_new(void)
+{
+ int i;
+ pthread_attr_t attr;
+
+ t_pdp_udp_send *x = (t_pdp_udp_send *)pd_new(pdp_udp_send_class);
+
+ x->x_sender = pdp_udp_sender_new();
+
+ //x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_nb_packets = 4;
+ x->x_packet = malloc(sizeof(int)*x->x_nb_packets);
+ for (i=0; i<x->x_nb_packets; i++) x->x_packet[i] = -1;
+ x->x_read_packet = 0;
+ x->x_write_packet = 0;
+
+ x->x_drop = 0;
+
+
+
+ /* setup thread stuff & create thread */
+ x->x_exit_thread = 0;
+ pthread_mutex_init(&x->x_mut, NULL);
+ pthread_cond_init(&x->x_cond_data_ready, NULL);
+ pthread_cond_init(&x->x_cond_send_done, NULL);
+ pthread_attr_init(&attr);
+ //pthread_attr_setschedpolicy(&attr, SCHED_OTHER);
+ pthread_create(&x->x_thread, &attr, send_thread, x);
+ post("pdp_netsend: WARNING: experimental object");
+
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_udp_send_setup(void)
+{
+
+ pdp_udp_send_class = class_new(gensym("pdp_netsend"), (t_newmethod)pdp_udp_send_new,
+ (t_method)pdp_udp_send_free, sizeof(t_pdp_udp_send), 0, A_NULL);
+
+
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_sleepgrain, gensym("sleepgrain"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_sleepperiod, gensym("sleepperiod"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_udpsize, gensym("udpsize"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_timeout, gensym("timeout"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_udp_send_class, (t_method)pdp_udp_send_connect, gensym("connect"), A_SYMBOL, A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif