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/*
* 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.
*
*/
#include "pdp.h"
typedef struct pdp_add_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0; // packet outlet
int x_packet0; // current hot packet (left inlet)
int x_packet1; // current cold packet (right inlet)
int x_packet1next; // next cold packet (right inlet)
int x_queue_id; // task id in process queue (for callback cancelling)
int x_dropped; // indicate if a packet was dropped during register_rw cycle
} t_pdp_add;
static void pdp_add_process_yv12(t_pdp_add *x)
{
t_pdp *header0 = pdp_packet_header(x->x_packet0);
t_pdp *header1 = pdp_packet_header(x->x_packet1);
void *data0 = pdp_packet_data (x->x_packet0);
void *data1 = pdp_packet_data (x->x_packet1);
unsigned int w = header0->info.image.width;
unsigned int h = header0->info.image.height;
// set hight so it includes the chroma frames
h = h + (h>>1);
pdp_imageproc_add_process((short int*)data0, (short int*)data1, w, h);
return;
}
static void pdp_add_process_grey(t_pdp_add *x)
{
t_pdp *header0 = pdp_packet_header(x->x_packet0);
t_pdp *header1 = pdp_packet_header(x->x_packet1);
void *data0 = pdp_packet_data (x->x_packet0);
void *data1 = pdp_packet_data (x->x_packet1);
unsigned int w = header0->info.image.width;
unsigned int h = header0->info.image.height;
pdp_imageproc_add_process((short int*)data0, (short int*)data1, w, h);
return;
}
static void pdp_add_process(t_pdp_add *x)
{
int encoding;
/* check if image data packets are compatible */
if (pdp_type_compat_image(x->x_packet0, x->x_packet1)){
/* dispatch to process thread */
switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
case PDP_IMAGE_YV12:
pdp_add_process_yv12(x);
break;
case PDP_IMAGE_GREY:
pdp_add_process_grey(x);
break;
default:
break;
/* don't know the type, so dont process */
}
}
}
/* this method is called after the thread has finished processing */
static void pdp_add_sendpacket(t_pdp_add *x)
{
/* unregister (mark unused) packet and propagate if packet is valid */
pdp_pass_if_valid(x->x_outlet0, &x->x_packet0);
}
static void pdp_add_input_0(t_pdp_add *x, t_symbol *s, t_floatarg f)
{
int p = (int)f;
if (s== gensym("register_rw")) x->x_dropped = pdp_packet_copy_rw_or_drop(&x->x_packet0, p);
if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){
/* if a cold packet was received in the meantime
swap it in, else keep the old one */
pdp_replace_if_valid(&x->x_packet1, &x->x_packet1next);
/* add the process method and callback to the process queue */
pdp_queue_add(x, pdp_add_process, pdp_add_sendpacket, &x->x_queue_id);
}
}
static void pdp_add_input_1(t_pdp_add *x, t_symbol *s, t_floatarg f)
{
/* store the packet and trow away
the old one, if there is any */
int p = (int)f;
if(s == gensym("register_ro")) pdp_packet_copy_ro_or_drop(&x->x_packet1next, p);
}
static void pdp_add_free(t_pdp_add *x)
{
/* remove process method from queue before deleting data */
pdp_queue_finish(x->x_queue_id);
/* delete stuff */
pdp_packet_mark_unused(x->x_packet0);
pdp_packet_mark_unused(x->x_packet1);
pdp_packet_mark_unused(x->x_packet1next);
}
t_class *pdp_add_class;
void *pdp_add_new(void)
{
t_pdp_add *x = (t_pdp_add *)pd_new(pdp_add_class);
/* init in/out */
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("pdp"), gensym("pdp1"));
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
/* init pdp vars */
x->x_packet0 = -1;
x->x_packet1 = -1;
x->x_packet1next = -1;
x->x_queue_id = -1;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_add_setup(void)
{
pdp_add_class = class_new(gensym("pdp_add"), (t_newmethod)pdp_add_new,
(t_method)pdp_add_free, sizeof(t_pdp_add), 0, A_NULL);
class_addmethod(pdp_add_class, (t_method)pdp_add_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_add_class, (t_method)pdp_add_input_1, gensym("pdp1"), A_SYMBOL, A_DEFFLOAT, A_NULL);
}
#ifdef __cplusplus
}
#endif
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