From 213978fa8a868661dda88e6b4e7cacec1c90677a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pablo=20Mart=C3=ADn?= Date: Sun, 7 Sep 2003 21:45:05 +0000 Subject: Updating pdp to current version 0.12.2 svn path=/trunk/externals/pdp/; revision=941 --- modules/image_special/pdp_slice_glue.c | 215 +++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 modules/image_special/pdp_slice_glue.c (limited to 'modules/image_special/pdp_slice_glue.c') 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 + * + * 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 -- cgit v1.2.1