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-rw-r--r--modules/pdp_zoom.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/modules/pdp_zoom.c b/modules/pdp_zoom.c
new file mode 100644
index 0000000..33207ce
--- /dev/null
+++ b/modules/pdp_zoom.c
@@ -0,0 +1,264 @@
+/*
+ * 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_zoom_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;
+
+ float x_zoom_x;
+ float x_zoom_y;
+
+ float x_center_x;
+ float x_center_y;
+
+ int x_quality; //not used
+
+
+} t_pdp_zoom;
+
+
+static void pdp_zoom_process_yv12(t_pdp_zoom *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;
+
+ short int *src_image = (short int *)data0;
+ short int *dst_image = (short int *)data1;
+
+ unsigned int size = w * h;
+ unsigned int voffset = size;
+ unsigned int uoffset = size + (size>>2);
+
+
+ pdp_resample_zoom_tiled_bilin(src_image, dst_image, w, h, x->x_zoom_x, x->x_zoom_y, x->x_center_x, x->x_center_y);
+ pdp_resample_zoom_tiled_bilin(src_image+voffset, dst_image+voffset, w>>1, h>>1, x->x_zoom_x, x->x_zoom_y, x->x_center_x, x->x_center_y);
+ pdp_resample_zoom_tiled_bilin(src_image+uoffset, dst_image+uoffset, w>>1, h>>1, x->x_zoom_x, x->x_zoom_y, x->x_center_x, x->x_center_y);
+
+ return;
+}
+
+static void pdp_zoom_process_grey(t_pdp_zoom *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;
+
+ short int *src_image = (short int *)data0;
+ short int *dst_image = (short int *)data1;
+
+ pdp_resample_zoom_tiled_bilin(src_image, dst_image, w, h, x->x_zoom_x, x->x_zoom_y, x->x_center_x, x->x_center_y);
+
+ return;
+
+}
+
+static void pdp_zoom_sendpacket(t_pdp_zoom *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_zoom_process(t_pdp_zoom *x)
+{
+ t_pdp *header0 = pdp_packet_header(x->x_packet0);
+
+ /* check data packets */
+
+ if ((header0) && (PDP_IMAGE == header0->type)){
+
+
+ /* type hub */
+ switch(header0->info.image.encoding){
+
+ case PDP_IMAGE_YV12:
+ x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+ pdp_queue_add(x, pdp_zoom_process_yv12, pdp_zoom_sendpacket, &x->x_queue_id);
+ break;
+
+ case PDP_IMAGE_GREY:
+ x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+ pdp_queue_add(x, pdp_zoom_process_grey, pdp_zoom_sendpacket, &x->x_queue_id);
+ break;
+
+ default:
+ break;
+ /* don't know the type, so dont process */
+
+ }
+ }
+
+}
+
+
+
+
+static void pdp_zoom_input_0(t_pdp_zoom *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_zoom_process(x);
+
+ }
+
+}
+
+
+
+
+static void pdp_zoom_x(t_pdp_zoom *x, t_floatarg f)
+{
+ x->x_zoom_x = f;
+}
+
+static void pdp_zoom_y(t_pdp_zoom *x, t_floatarg f)
+{
+ x->x_zoom_y = f;
+}
+
+static void pdp_zoom(t_pdp_zoom *x, t_floatarg f)
+{
+ pdp_zoom_x(x, f);
+ pdp_zoom_y(x, f);
+}
+
+static void pdp_zoom_center_x(t_pdp_zoom *x, t_floatarg f)
+{
+ x->x_center_x = (f + 0.5f);
+}
+
+static void pdp_zoom_center_y(t_pdp_zoom *x, t_floatarg f)
+{
+ x->x_center_y = (f + 0.5f);
+}
+static void pdp_zoom_center(t_pdp_zoom *x, t_floatarg fx, t_floatarg fy)
+{
+ pdp_zoom_center_x(x, fx);
+ pdp_zoom_center_y(x, fy);
+}
+
+static void pdp_zoom_quality(t_pdp_zoom *x, t_floatarg f)
+{
+ if (f==0) x->x_quality = 0;
+ if (f==1) x->x_quality = 1;
+}
+
+
+t_class *pdp_zoom_class;
+
+
+
+void pdp_zoom_free(t_pdp_zoom *x)
+{
+ pdp_queue_finish(x->x_queue_id);
+ pdp_packet_mark_unused(x->x_packet0);
+ pdp_packet_mark_unused(x->x_packet1);
+}
+
+void *pdp_zoom_new(t_floatarg fw, t_floatarg zoom)
+{
+ t_pdp_zoom *x = (t_pdp_zoom *)pd_new(pdp_zoom_class);
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("zoom"));
+
+
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_packet0 = -1;
+ x->x_packet1 = -1;
+ x->x_queue_id = -1;
+
+ pdp_zoom_quality(x, 1);
+ pdp_zoom_center_x(x, 0);
+ pdp_zoom_center_y(x, 0);
+
+ if (zoom = 0.0f) zoom = 1.0f;
+ pdp_zoom(x, zoom);
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_zoom_setup(void)
+{
+
+
+ pdp_zoom_class = class_new(gensym("pdp_zoom"), (t_newmethod)pdp_zoom_new,
+ (t_method)pdp_zoom_free, sizeof(t_pdp_zoom), 0, A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+
+
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_quality, gensym("quality"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_center_x, gensym("centerx"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_center_y, gensym("centery"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_center, gensym("center"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_x, gensym("zoomx"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_y, gensym("zoomy"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom, gensym("zoom"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_zoom_class, (t_method)pdp_zoom_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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