This commit was generated by cvs2svn to compensate for changes in r352,svn2git-root

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svn path=/trunk/externals/pdp/; revision=353

1 files changed, 267 insertions, 0 deletions

diff --git a/modules/pdp_scale.c b/modules/pdp_scale.c
new file mode 100644
index 0000000..82c5257
--- /dev/null
+++ b/modules/pdp_scale.c
@@ -0,0 +1,267 @@
+/*
+ *   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