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Diffstat (limited to 'modules/image_special/pdp_slice_glue.c')
-rw-r--r--modules/image_special/pdp_slice_glue.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/modules/image_special/pdp_slice_glue.c b/modules/image_special/pdp_slice_glue.c
new file mode 100644
index 0000000..af6d2bd
--- /dev/null
+++ b/modules/image_special/pdp_slice_glue.c
@@ -0,0 +1,215 @@
+/*
+ * 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"
+
+typedef struct pdp_slice_glue_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_outlet *x_outlet0;
+
+ int x_packet0; //input packet
+ int x_packet1; //output packet
+
+} t_pdp_slice_glue;
+
+
+
+static void pdp_slice_glue_process_grey(t_pdp_slice_glue *x)
+{
+ t_pdp *header0 = pdp_packet_header(x->x_packet0);
+ t_pdp *header1 = pdp_packet_header(x->x_packet1);
+ short int *data0 = (short int *)pdp_packet_data (x->x_packet0);
+ short int *data1 = (short int *)pdp_packet_data (x->x_packet1);
+
+
+ unsigned int offset = header0->info.image.width * header0->info.image.slice_yoff;
+ unsigned int slice_size = header0->info.image.width * header0->info.image.height;
+
+ memcpy(data1 + offset, data0, slice_size << 1);
+
+
+ return;
+}
+
+static void pdp_slice_glue_process_yv12(t_pdp_slice_glue *x)
+{
+
+ t_pdp *header0 = pdp_packet_header(x->x_packet0);
+ t_pdp *header1 = pdp_packet_header(x->x_packet1);
+ short int *data0 = (short int *)pdp_packet_data (x->x_packet0);
+ short int *data1 = (short int *)pdp_packet_data (x->x_packet1);
+
+ unsigned int w = header0->info.image.width;
+ unsigned int h = header0->info.image.height;
+
+ unsigned int dw = header1->info.image.width;
+ unsigned int dh = header1->info.image.height;
+ unsigned int dsize = dh*dw;
+
+ unsigned int offset = w * header0->info.image.slice_yoff;
+ unsigned int slice_size = w * h;
+
+ memcpy(data1 + offset, data0, slice_size << 1);
+ memcpy(data1 + dsize + (offset >> 2), data0 + slice_size, slice_size >> 1);
+ memcpy(data1 + dsize + (dsize >>2) + (offset>>2), data0 + slice_size + (slice_size >> 2), slice_size >> 1);
+
+
+ return;
+
+}
+
+
+
+static void pdp_slice_glue_process(t_pdp_slice_glue *x)
+{
+ int encoding;
+ int newpacket;
+ t_pdp *header = 0;
+ t_pdp *dest_header = 0;
+
+
+ /* check if the packet is a valid slice packet */
+ /* if not pass it along */
+ if (!((header = pdp_packet_header(x->x_packet0)) &&
+ (PDP_IMAGE == header->type) && (header->info.image.orig_height))) goto passalong;
+
+ /* if this is the first slice of a sequence, or we don't have a dest packet yet */
+ /* create a new destination packet */
+ if ((x->x_packet1 == -1) || (header->info.image.slice_sync & PDP_IMAGE_SLICE_FIRST)){
+ pdp_packet_mark_unused(x->x_packet1);
+ x->x_packet1 = pdp_packet_new_image(header->info.image.encoding, header->info.image.width, header->info.image.orig_height);
+ dest_header = pdp_packet_header(x->x_packet1);
+ //dest_header->info.image.encoding = header->info.image.encoding;
+ //dest_header->info.image.width = header->info.image.width;
+ //dest_header->info.image.height = header->info.image.orig_height;
+ }
+
+ /* if this is a body or last slice, it has to be compatible with the current dest packet */
+ /* else ignore it */
+ else{
+ dest_header = pdp_packet_header(x->x_packet1);
+ if (!((dest_header->info.image.encoding == header->info.image.encoding) &&
+ ((dest_header->info.image.width == header->info.image.width)))) goto dispose;
+ }
+
+ /* now we have a dest packet and the source packet is compatible with it, so copy the data */
+
+
+ switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+ case PDP_IMAGE_YV12:
+ pdp_slice_glue_process_yv12(x);
+ break;
+
+ case PDP_IMAGE_GREY:
+ pdp_slice_glue_process_grey(x);
+ break;
+
+ default:
+ /* don't know the type, so dont pdp_slice_glue_process */
+
+ break;
+ }
+
+ /* if the source packet was a final slice, pass on the constructed packet */
+ if (header->info.image.slice_sync & PDP_IMAGE_SLICE_LAST){
+ pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet1);
+ }
+
+
+ /* processing is done so we delete the source packet */
+ dispose:
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;
+ return;
+
+
+ passalong:
+ pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet0);
+ return;
+
+}
+
+static void pdp_slice_glue_input_0(t_pdp_slice_glue *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_glue_process(x);
+
+}
+
+
+
+
+static void pdp_slice_glue_free(t_pdp_slice_glue *x)
+{
+ pdp_packet_mark_unused(x->x_packet0);
+}
+
+t_class *pdp_slice_glue_class;
+
+
+
+void *pdp_slice_glue_new(void)
+{
+ int i;
+
+ t_pdp_slice_glue *x = (t_pdp_slice_glue *)pd_new(pdp_slice_glue_class);
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+ x->x_packet0 = -1;
+
+ post("pdp_slice_glue: WARNING: experimental object");
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_slice_glue_setup(void)
+{
+
+
+ pdp_slice_glue_class = class_new(gensym("pdp_slice_glue"), (t_newmethod)pdp_slice_glue_new,
+ (t_method)pdp_slice_glue_free, sizeof(t_pdp_slice_glue), 0, A_NULL);
+
+
+ class_addmethod(pdp_slice_glue_class, (t_method)pdp_slice_glue_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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