diff options
author | Pablo Martín <caedesv@users.sourceforge.net> | 2003-09-07 21:45:05 +0000 |
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committer | Pablo Martín <caedesv@users.sourceforge.net> | 2003-09-07 21:45:05 +0000 |
commit | 213978fa8a868661dda88e6b4e7cacec1c90677a (patch) | |
tree | ada4aa53b2e25926c93bc1d4f2d19cbd018d1493 /modules/image_special/pdp_slice_cut.c | |
parent | 599a8e20c02fa48bab5102d15fab79dd6b631c95 (diff) |
Updating pdp to current version 0.12.2
svn path=/trunk/externals/pdp/; revision=941
Diffstat (limited to 'modules/image_special/pdp_slice_cut.c')
-rw-r--r-- | modules/image_special/pdp_slice_cut.c | 310 |
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 |