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Diffstat (limited to 'modules/image_special/pdp_slice_cut.c')
-rw-r--r--modules/image_special/pdp_slice_cut.c310
1 files changed, 310 insertions, 0 deletions
diff --git a/modules/image_special/pdp_slice_cut.c b/modules/image_special/pdp_slice_cut.c
new file mode 100644
index 0000000..586f44d
--- /dev/null
+++ b/modules/image_special/pdp_slice_cut.c
@@ -0,0 +1,310 @@
+/*
+ * 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 converts a greyscale image or the luma channel of a colour image
+ to a colour image intensity mask, usable for multiplication */
+
+#include "pdp.h"
+#include "pdp_resample.h"
+#include "pdp_imageproc.h"
+
+typedef struct pdp_slice_cut_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_outlet *x_outlet0;
+
+ int x_packet0;
+ //int x_dropped;
+ //int x_queue_id;
+
+ unsigned int x_slice_height;
+
+
+} t_pdp_slice_cut;
+
+
+
+static void pdp_slice_cut_process_grey(t_pdp_slice_cut *x)
+{
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ short int *data = (short int *)pdp_packet_data (x->x_packet0);
+ t_pdp *newheader = 0;
+ short int *newdata = 0;
+ int newpacket = -1;
+
+ unsigned int w = header->info.image.width;
+ unsigned int h = header->info.image.height;
+
+ unsigned int size = w*h;
+ unsigned int height_left = h;
+ unsigned int slice_height = 0;
+ unsigned int slice_yoffset = 0;
+ unsigned int slice_offset = 0;
+ unsigned int slice_size_bytes = 0;
+
+ #define min(x,y) (((x)<(y)) ? (x) : (y))
+
+ while(height_left){
+
+ /* compute slice size */
+ slice_height = min(x->x_slice_height, height_left);
+ height_left -= slice_height;
+ slice_size_bytes = (w << 1) * slice_height;
+
+ /* create new slice packet */
+ newpacket = pdp_packet_new_image_grey(w, slice_height);
+ newheader = pdp_packet_header(newpacket);
+
+ if(!newheader){
+ post("pdp_slice_cut: can't allocate packet");
+ return;
+ }
+
+ newdata = (s16*)pdp_packet_data(newpacket);
+
+ //newheader->info.image.encoding = PDP_IMAGE_GREY;
+ //newheader->info.image.width = w;
+ //newheader->info.image.height = slice_height;
+
+ newheader->info.image.orig_height = h;
+ newheader->info.image.slice_yoff = slice_yoffset;
+
+ if (slice_height + height_left == h) newheader->info.image.slice_sync = PDP_IMAGE_SLICE_FIRST;
+ else if (height_left == 0) newheader->info.image.slice_sync = PDP_IMAGE_SLICE_LAST;
+ else newheader->info.image.slice_sync = PDP_IMAGE_SLICE_BODY;
+
+ /* copy slice data */
+ memcpy(newdata, data+slice_offset, slice_size_bytes);
+
+ /* unregister and propagate if valid packet */
+ pdp_packet_pass_if_valid(x->x_outlet0, &newpacket);
+
+ /* advance pointer stuff */
+ slice_offset += (slice_size_bytes>>1);
+ slice_yoffset += slice_height;
+
+ }
+
+
+
+ /* delete source packet when finished */
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;
+ return;
+}
+
+static void pdp_slice_cut_process_yv12(t_pdp_slice_cut *x)
+{
+
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ short int *data = (short int *)pdp_packet_data (x->x_packet0);
+ t_pdp *newheader = 0;
+ short int *newdata = 0;
+ int newpacket = -1;
+
+ unsigned int w = header->info.image.width;
+ unsigned int h = header->info.image.height;
+
+ unsigned int size = w*h;
+ unsigned int height_left = h;
+ unsigned int slice_height = 0;
+ unsigned int sequence_number = 0;
+ unsigned int slice_offset = 0;
+ unsigned int slice_yoffset = 0;
+ unsigned int slice_size_bytes = 0;
+ unsigned int slice_size = 0;
+
+ #define min(x,y) (((x)<(y)) ? (x) : (y))
+
+ while(height_left){
+
+ /* compute slice size */
+ slice_height = min(x->x_slice_height, height_left);
+ height_left -= slice_height;
+ slice_size = w * slice_height;
+ slice_size_bytes = slice_size << 1;
+
+ /* create new slice packet */
+ newpacket = pdp_packet_new_image_YCrCb(w, slice_height);
+ newheader = pdp_packet_header(newpacket);
+
+ if(!newheader){
+ post("pdp_slice_cut: can't allocate packet");
+ return;
+ }
+
+ newdata = (s16*)pdp_packet_data(newpacket);
+ newheader->info.image.encoding = PDP_IMAGE_YV12;
+ newheader->info.image.width = w;
+ newheader->info.image.height = slice_height;
+ newheader->info.image.orig_height = h;
+ newheader->info.image.slice_yoff = slice_yoffset;
+
+ if (slice_height + height_left == h) newheader->info.image.slice_sync = PDP_IMAGE_SLICE_FIRST;
+ else if (height_left == 0) newheader->info.image.slice_sync = PDP_IMAGE_SLICE_LAST;
+ else newheader->info.image.slice_sync = PDP_IMAGE_SLICE_BODY;
+
+
+ /* copy slice data */
+ memcpy(newdata,
+ data + slice_offset,
+ slice_size_bytes);
+
+ memcpy(newdata + slice_size,
+ data + size + (slice_offset>>2),
+ slice_size_bytes>>2);
+
+ memcpy(newdata + slice_size + (slice_size >> 2),
+ data + size + (size >> 2) + (slice_offset >> 2),
+ slice_size_bytes>>2);
+
+ /* unregister and propagate if valid packet */
+ pdp_packet_pass_if_valid(x->x_outlet0, &newpacket);
+
+ /* advance pointer stuff */
+ slice_offset += (slice_size_bytes>>1);
+ slice_yoffset += slice_height;
+
+ }
+
+
+
+ /* delete source packet when finished */
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;
+ return;
+
+}
+
+
+
+static void pdp_slice_cut_process(t_pdp_slice_cut *x)
+{
+ int encoding;
+ t_pdp *header = 0;
+
+
+ /* check if image data packets are compatible */
+ if ( (header = pdp_packet_header(x->x_packet0))
+ && (PDP_IMAGE == header->type)){
+
+ /* pdp_slice_cut_process inputs and write into active inlet */
+ switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+ case PDP_IMAGE_YV12:
+ pdp_slice_cut_process_yv12(x);
+ break;
+
+ case PDP_IMAGE_GREY:
+ pdp_slice_cut_process_grey(x);
+ break;
+
+ default:
+ /* don't know the type, so dont pdp_slice_cut_process */
+
+ break;
+ }
+ }
+}
+
+static void pdp_slice_cut_input_0(t_pdp_slice_cut *x, t_symbol *s, t_floatarg f)
+{
+
+ int p = (int)f;
+
+ if (s== gensym("register_ro")) x->x_packet0 = pdp_packet_copy_ro(p);
+ if ((s == gensym("process")) && (-1 != x->x_packet0)) pdp_slice_cut_process(x);
+
+}
+
+
+
+static void pdp_slice_cut_height(t_pdp_slice_cut *x, t_floatarg f)
+{
+ int i = (int)f;
+ x->x_slice_height = pdp_imageproc_legalheight(i);
+ post("pdp_slice: height set to %d", x->x_slice_height);
+
+}
+static void pdp_slice_cut_forceheight(t_pdp_slice_cut *x, t_floatarg f)
+{
+ int i = (int)f;
+ if (i<1) i = 1;
+ x->x_slice_height = i;
+ post("pdp_slice: WARNING: forceheight is a debug message. setting this to an abritrary");
+ post("pdp_slice: WARNING: value can crash pdp. set it to a multiple of 2 and only use pixel");
+ post("pdp_slice: WARNING: operations (no convolution or biquad) in the mmx version.");
+ post("pdp_slice: height forced to %d", x->x_slice_height);
+
+}
+
+
+static void pdp_slice_cut_free(t_pdp_slice_cut *x)
+{
+ pdp_packet_mark_unused(x->x_packet0);
+}
+
+t_class *pdp_slice_cut_class;
+
+
+
+void *pdp_slice_cut_new(void)
+{
+ int i;
+
+ t_pdp_slice_cut *x = (t_pdp_slice_cut *)pd_new(pdp_slice_cut_class);
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+ x->x_packet0 = -1;
+ //x->x_queue_id = -1;
+
+ x->x_slice_height = 8;
+ post("pdp_slice_cut: WARNING: experimental object");
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_slice_cut_setup(void)
+{
+
+
+ pdp_slice_cut_class = class_new(gensym("pdp_slice_cut"), (t_newmethod)pdp_slice_cut_new,
+ (t_method)pdp_slice_cut_free, sizeof(t_pdp_slice_cut), 0, A_NULL);
+
+
+ class_addmethod(pdp_slice_cut_class, (t_method)pdp_slice_cut_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_slice_cut_class, (t_method)pdp_slice_cut_height, gensym("height"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_slice_cut_class, (t_method)pdp_slice_cut_forceheight, gensym("forceheight"), A_FLOAT, A_NULL);
+
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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