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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"
#include "pdp_resample.h"
typedef struct pdp_scale_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0;
int x_packet0;
int x_packet1;
int x_dropped;
int x_queue_id;
unsigned int x_width;
unsigned int x_height;
int x_quality;
} t_pdp_scale;
static void pdp_scale_process_yv12(t_pdp_scale *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 src_w = header0->info.image.width;
unsigned int src_h = header0->info.image.height;
unsigned int dst_w = header1->info.image.width;
unsigned int dst_h = header1->info.image.height;
short int *src_image = (short int *)data0;
short int *dst_image = (short int *)data1;
unsigned int src_size = src_w*src_h;
unsigned int src_voffset = src_size;
unsigned int src_uoffset = src_size + (src_size>>2);
unsigned int dst_size = dst_w*dst_h;
unsigned int dst_voffset = dst_size;
unsigned int dst_uoffset = dst_size + (dst_size>>2);
if (x->x_quality){
pdp_resample_scale_bilin(src_image, dst_image, src_w, src_h, dst_w, dst_h);
pdp_resample_scale_bilin(src_image+src_voffset, dst_image+dst_voffset, src_w>>1, src_h>>1, dst_w>>1, dst_h>>1);
pdp_resample_scale_bilin(src_image+src_uoffset, dst_image+dst_uoffset, src_w>>1, src_h>>1, dst_w>>1, dst_h>>1);
}
else{
pdp_resample_scale_nn(src_image, dst_image, src_w, src_h, dst_w, dst_h);
pdp_resample_scale_nn(src_image+src_voffset, dst_image+dst_voffset, src_w>>1, src_h>>1, dst_w>>1, dst_h>>1);
pdp_resample_scale_nn(src_image+src_uoffset, dst_image+dst_uoffset, src_w>>1, src_h>>1, dst_w>>1, dst_h>>1);
}
return;
}
static void pdp_scale_process_grey(t_pdp_scale *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 src_w = header0->info.image.width;
unsigned int src_h = header0->info.image.height;
unsigned int dst_w = header1->info.image.width;
unsigned int dst_h = header1->info.image.height;
short int *src_image = (short int *)data0;
short int *dst_image = (short int *)data1;
if (x->x_quality) pdp_resample_scale_bilin(src_image, dst_image, src_w, src_h, dst_w, dst_h);
else pdp_resample_scale_nn(src_image, dst_image, src_w, src_h, dst_w, dst_h);
return;
}
static void pdp_scale_sendpacket(t_pdp_scale *x)
{
/* delete source packet */
pdp_packet_mark_unused(x->x_packet0);
x->x_packet0 = -1;
/* unregister and propagate if valid dest packet */
pdp_pass_if_valid(x->x_outlet0, &x->x_packet1);
}
static void pdp_scale_process(t_pdp_scale *x)
{
t_pdp *header0 = pdp_packet_header(x->x_packet0);
/* check data packets */
if ((header0) && (PDP_IMAGE == header0->type)){
/* if dims are equal, just send the packet */
if ((header0->info.image.width == x->x_width)
&& (header0->info.image.height == x->x_height)){
x->x_packet1 = x->x_packet0;
x->x_packet0 = -1;
pdp_scale_sendpacket(x);
return;
}
/* type hub */
switch(header0->info.image.encoding){
case PDP_IMAGE_YV12:
x->x_packet1 = pdp_packet_new_image_yv12(x->x_width, x->x_height);
pdp_queue_add(x, pdp_scale_process_yv12, pdp_scale_sendpacket, &x->x_queue_id);
break;
case PDP_IMAGE_GREY:
x->x_packet1 = pdp_packet_new_image_grey(x->x_width, x->x_height);
pdp_queue_add(x, pdp_scale_process_grey, pdp_scale_sendpacket, &x->x_queue_id);
break;
default:
break;
/* don't know the type, so dont process */
}
}
}
static void pdp_scale_input_0(t_pdp_scale *x, t_symbol *s, t_floatarg f)
{
int p = (int)f;
int passes, i;
if (s== gensym("register_rw")) x->x_dropped = pdp_packet_copy_ro_or_drop(&x->x_packet0, p);
if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){
/* add the process method and callback to the process queue */
pdp_scale_process(x);
}
}
static void pdp_scale_width(t_pdp_scale *x, t_floatarg f)
{
int i = (int)f;
if (i < 32) i = 32;
x->x_width = i;
}
static void pdp_scale_height(t_pdp_scale *x, t_floatarg f)
{
int i = (int)f;
if (i < 32) i = 32;
x->x_height = i;
}
static void pdp_scale_dim(t_pdp_scale *x, t_floatarg w, t_floatarg h)
{
pdp_scale_width(x, w);
pdp_scale_height(x, h);
}
static void pdp_scale_quality(t_pdp_scale *x, t_floatarg f)
{
if (f==0) x->x_quality = 0;
if (f==1) x->x_quality = 1;
}
t_class *pdp_scale_class;
void pdp_scale_free(t_pdp_scale *x)
{
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
pdp_packet_mark_unused(x->x_packet1);
}
void *pdp_scale_new(t_floatarg fw, t_floatarg fh)
{
t_pdp_scale *x = (t_pdp_scale *)pd_new(pdp_scale_class);
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_packet0 = -1;
x->x_packet1 = -1;
x->x_queue_id = -1;
if ((fw != 0.0f) && (fh != 0.0f)) pdp_scale_dim(x, fw, fh);
else pdp_scale_dim(x, 320, 240);
pdp_scale_quality(x, 1);
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_scale_setup(void)
{
pdp_scale_class = class_new(gensym("pdp_scale"), (t_newmethod)pdp_scale_new,
(t_method)pdp_scale_free, sizeof(t_pdp_scale), 0, A_DEFFLOAT, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_scale_class, (t_method)pdp_scale_quality, gensym("quality"), A_FLOAT, A_NULL);
class_addmethod(pdp_scale_class, (t_method)pdp_scale_width, gensym("width"), A_FLOAT, A_NULL);
class_addmethod(pdp_scale_class, (t_method)pdp_scale_height, gensym("height"), A_FLOAT, A_NULL);
class_addmethod(pdp_scale_class, (t_method)pdp_scale_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
class_addmethod(pdp_scale_class, (t_method)pdp_scale_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
}
#ifdef __cplusplus
}
#endif
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