4 * Copyright (C) 2011 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 #include "bcpbuffer.h"
34 #include "bcresources.h"
35 #include "bcsignals.h"
36 #include "bcsynchronous.h"
37 #include "bctexture.h"
38 #include "bcwindowbase.h"
40 #include "bccmodels.h"
46 static void png_read_function(png_structp png_ptr,
47 png_bytep data, png_size_t length)
49 VFrame *frame = (VFrame*)png_get_io_ptr(png_ptr);
50 if(frame->image_size - frame->image_offset < (long)length)
52 printf("PngReadFunction::png_read_function %d: overrun\n", __LINE__);
53 length = frame->image_size - frame->image_offset;
56 memcpy(data, &frame->image[frame->image_offset], length);
57 frame->image_offset += length;
67 VFrameScene::VFrameScene()
71 VFrameScene::~VFrameScene()
76 //static BCCounter counter;
78 VFramePng::VFramePng(unsigned char *png_data, double s)
81 ((long)png_data[0] << 24) | ((long)png_data[1] << 16) |
82 ((long)png_data[2] << 8) | (long)png_data[3];
83 if( !s ) s = BC_WindowBase::get_resources()->icon_scale;
84 read_png(png_data+4, image_size, s, s);
87 VFramePng::VFramePng(unsigned char *png_data, long image_size, double xs, double ys)
89 if( !xs ) xs = BC_WindowBase::get_resources()->icon_scale;
90 if( !ys ) ys = BC_WindowBase::get_resources()->icon_scale;
91 read_png(png_data, image_size, xs, ys);
94 VFramePng::~VFramePng()
98 VFrame *VFramePng::vframe_png(int fd, double xs, double ys)
101 if( fstat(fd, &st) ) return 0;
102 long len = st.st_size;
105 unsigned char *bfr = (unsigned char *)
106 ::mmap (NULL, len, PROT_READ, MAP_SHARED, fd, 0);
107 if( bfr == MAP_FAILED ) return 0;
108 VFrame *vframe = new VFramePng(bfr, len, xs, ys);
109 if( (w=vframe->get_w()) <= 0 || (h=vframe->get_h()) <= 0 ||
110 vframe->get_data() == 0 ) { delete vframe; vframe = 0; }
114 VFrame *VFramePng::vframe_png(const char *png_path, double xs, double ys)
117 int fd = ::open(png_path, O_RDONLY);
119 vframe = vframe_png(fd, xs, ys);
125 VFrame::VFrame(VFrame &frame)
128 params = new BC_Hash;
129 use_shm = frame.use_shm;
130 allocate_data(0, -1, 0, 0, 0, frame.w, frame.h,
131 frame.color_model, frame.bytes_per_line);
136 VFrame::VFrame(int w, int h, int color_model, long bytes_per_line)
139 // use bytes_per_line == 0 to allocate default unshared
140 if( !bytes_per_line ) { bytes_per_line = -1; use_shm = 0; }
141 params = new BC_Hash;
142 allocate_data(data, -1, 0, 0, 0, w, h,
143 color_model, bytes_per_line);
146 VFrame::VFrame(unsigned char *data, int shmid, int w, int h,
147 int color_model, long bytes_per_line)
150 params = new BC_Hash;
151 allocate_data(data, shmid, 0, 0, 0, w, h,
152 color_model, bytes_per_line);
155 VFrame::VFrame(unsigned char *data, int shmid,
156 long y_offset, long u_offset, long v_offset,
157 int w, int h, int color_model, long bytes_per_line)
160 params = new BC_Hash;
161 allocate_data(data, shmid, y_offset, u_offset, v_offset, w, h,
162 color_model, bytes_per_line);
165 VFrame::VFrame(BC_Bitmap *bitmap, int w, int h,
166 int color_model, long bytes_per_line)
169 params = new BC_Hash;
171 unsigned char *data = 0;
172 if( bitmap->is_shared() )
173 shmid = bitmap->get_shmid();
175 data = bitmap->get_data();
176 allocate_data(data, shmid,
177 bitmap->get_y_offset(),
178 bitmap->get_u_offset(),
179 bitmap->get_v_offset(),
180 w, h, color_model, bytes_per_line);
186 params = new BC_Hash;
187 this->color_model = BC_COMPRESSED;
195 // Delete effect stack
196 prev_effects.remove_all_objects();
197 next_effects.remove_all_objects();
202 int VFrame::equivalent(VFrame *src, int test_stacks)
204 return (src->get_color_model() == get_color_model() &&
205 src->get_w() == get_w() &&
206 src->get_h() == get_h() &&
207 src->bytes_per_line == bytes_per_line &&
208 (!test_stacks || equal_stacks(src)));
211 int VFrame::data_matches(VFrame *frame)
213 if(data && frame->get_data() &&
214 frame->params_match(get_w(), get_h(), get_color_model()) &&
215 get_data_size() == frame->get_data_size())
217 int data_size = get_data_size();
218 unsigned char *ptr1 = get_data();
219 unsigned char *ptr2 = frame->get_data();
220 for(int i = 0; i < data_size; i++)
222 if(*ptr1++ != *ptr2++) return 0;
229 // long VFrame::set_shm_offset(long offset)
231 // shm_offset = offset;
235 // long VFrame::get_shm_offset()
237 // return shm_offset;
240 int VFrame::get_memory_type()
245 int VFrame::params_match(int w, int h, int color_model)
247 return (this->w == w &&
249 this->color_model == color_model);
253 int VFrame::reset_parameters(int do_opengl)
258 memory_type = VFrame::PRIVATE;
266 compressed_allocated = 0;
267 compressed_size = 0; // Size of current image
274 sequence_number = -1;
277 pixel_rgb = 0x000000; // BLACK
278 pixel_yuv = 0x008080;
280 clear_color = 0x000000;
285 // By default, anything is going to be done in RAM
286 opengl_state = VFrame::RAM;
291 prev_effects.set_array_delete();
292 next_effects.set_array_delete();
296 int VFrame::clear_objects(int do_opengl)
309 if( memory_type != VFrame::SHARED )
310 printf("==del %p from %p\n", data, __builtin_return_address(0));
316 case VFrame::PRIVATE:
318 // if(this->w * this->h > 1500 * 1100)
319 // printf("VFrame::clear_objects 2 this=%p data=%p\n", this, data);
322 //printf("VFrame::clear_objects %d this=%p shmid=%p data=%p\n", __LINE__, this, shmid, data);
342 // Delete row pointers
367 int VFrame::get_field2_offset()
369 return field2_offset;
372 int VFrame::set_field2_offset(int value)
374 this->field2_offset = value;
378 void VFrame::set_keyframe(int value)
380 this->is_keyframe = value;
383 int VFrame::get_keyframe()
388 void VFrame::get_temp(VFrame *&vfrm, int w, int h, int color_model)
390 if( vfrm && ( vfrm->color_model != color_model ||
391 vfrm->get_w() != w || vfrm->get_h() != h ) ) {
392 delete vfrm; vfrm = 0;
394 if( !vfrm ) vfrm = new VFrame(w, h, color_model, 0);
399 VFrameScene* VFrame::get_scene()
404 int VFrame::calculate_bytes_per_pixel(int color_model)
406 return BC_CModels::calculate_pixelsize(color_model);
409 long VFrame::get_bytes_per_line()
411 return bytes_per_line;
414 long VFrame::get_data_size()
416 return calculate_data_size(w, h, bytes_per_line, color_model) - 4;
419 long VFrame::calculate_data_size(int w, int h, int bytes_per_line, int color_model)
421 return BC_CModels::calculate_datasize(w, h, bytes_per_line, color_model);
424 void VFrame::create_row_pointers()
427 switch(color_model) {
429 if( this->v_offset ) break;
432 this->v_offset = sz + w / 4 * h / 4;
438 if( this->v_offset ) break;
441 this->v_offset = sz + sz / 4;
445 if( this->v_offset ) break;
448 this->v_offset = sz + sz / 2;
451 if( this->v_offset ) break;
454 this->v_offset = sz + sz;
457 if( this->v_offset ) break;
459 this->u_offset = sz * sizeof(uint8_t);
460 this->v_offset = 2 * sz * sizeof(uint8_t);
463 if( this->v_offset || a ) break;
464 a = this->data + 3 * sz * sizeof(float);
466 if( this->v_offset ) break;
468 this->u_offset = sz * sizeof(float);
469 this->v_offset = 2 * sz * sizeof(float);
473 rows = new unsigned char*[h];
474 for(int i = 0; i < h; i++)
475 rows[i] = &this->data[i * this->bytes_per_line];
478 y = this->data + this->y_offset;
479 u = this->data + this->u_offset;
480 v = this->data + this->v_offset;
483 int VFrame::allocate_data(unsigned char *data, int shmid,
484 long y_offset, long u_offset, long v_offset, int w, int h,
485 int color_model, long bytes_per_line)
489 this->color_model = color_model;
490 this->bytes_per_pixel = calculate_bytes_per_pixel(color_model);
491 this->y_offset = this->u_offset = this->v_offset = 0;
493 // printf("VFrame::allocate_data %d shmid == 0\n", __LINE__, shmid);
496 this->bytes_per_line = bytes_per_line >= 0 ?
497 bytes_per_line : this->bytes_per_pixel * w;
499 // Allocate data + padding for MMX
501 //printf("VFrame::allocate_data %d %p\n", __LINE__, this->data);
502 memory_type = VFrame::SHARED;
505 this->y_offset = y_offset;
506 this->u_offset = u_offset;
507 this->v_offset = v_offset;
509 else if(shmid >= 0) {
510 memory_type = VFrame::SHMGET;
511 this->data = (unsigned char*)shmat(shmid, NULL, 0);
512 //printf("VFrame::allocate_data %d shmid=%d data=%p\n", __LINE__, shmid, this->data);
514 this->y_offset = y_offset;
515 this->u_offset = u_offset;
516 this->v_offset = v_offset;
519 memory_type = VFrame::PRIVATE;
521 int size = calculate_data_size(this->w, this->h,
522 this->bytes_per_line, this->color_model);
523 if( use_shm && size >= SHM_MIN_SIZE &&
524 BC_WindowBase::get_resources()->use_vframe_shm() ) {
525 this->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0777);
526 if( this->shmid >= 0 ) {
527 this->data = (unsigned char*)shmat(this->shmid, NULL, 0);
528 //printf("VFrame::allocate_data %d %d %d %p\n", __LINE__, size, this->shmid, this->data);
529 // This causes it to automatically delete when the program exits.
530 shmctl(this->shmid, IPC_RMID, 0);
533 printf("VFrame::allocate_data %d could not allocate"
534 " shared memory, %dx%d (model %d) size=0x%08x\n",
535 __LINE__, w, h, color_model, size);
536 BC_Trace::dump_shm_stats(stdout);
539 // Have to use malloc for libpng
541 this->data = (unsigned char *)malloc(size);
545 // if(this->w * this->h > 1500 * 1100)
546 // printf("VFrame::allocate_data 2 this=%p w=%d h=%d this->data=%p\n",
547 // this, this->w, this->h, this->data);
550 printf("VFrame::allocate_data %dx%d: memory exhausted.\n", this->w, this->h);
552 printf("==new %p from %p sz %d\n", this->data, __builtin_return_address(0), size);
555 //printf("VFrame::allocate_data %d %p data=%p %d %d\n", __LINE__, this, this->data, this->w, this->h);
556 //if(size > 1000000) printf("VFrame::allocate_data %d\n", size);
559 // Create row pointers
560 create_row_pointers();
564 void VFrame::set_memory(unsigned char *data,
574 memory_type = VFrame::SHARED;
577 this->y_offset = y_offset;
578 this->u_offset = u_offset;
579 this->v_offset = v_offset;
584 memory_type = VFrame::SHMGET;
585 this->data = (unsigned char*)shmat(shmid, NULL, 0);
589 y = this->data + this->y_offset;
590 u = this->data + this->u_offset;
591 v = this->data + this->v_offset;
593 create_row_pointers();
596 void VFrame::set_memory(BC_Bitmap *bitmap)
599 unsigned char *data = 0;
600 if( bitmap->is_shared() && !bitmap->is_zombie() )
601 shmid = bitmap->get_shmid();
603 data = bitmap->get_data();
604 set_memory(data, shmid,
605 bitmap->get_y_offset(),
606 bitmap->get_u_offset(),
607 bitmap->get_v_offset());
610 void VFrame::set_compressed_memory(unsigned char *data,
619 memory_type = VFrame::SHARED;
626 memory_type = VFrame::SHMGET;
627 this->data = (unsigned char*)shmat(shmid, NULL, 0);
631 this->compressed_allocated = data_allocated;
632 this->compressed_size = data_size;
636 // Reallocate uncompressed buffer with or without alpha
637 int VFrame::reallocate(
648 // if(shmid == 0) printf("VFrame::reallocate %d shmid=%d\n", __LINE__, shmid);
650 // reset_parameters(0);
663 int VFrame::allocate_compressed_data(long bytes)
665 if(bytes < 1) return 1;
667 // Want to preserve original contents
668 if(data && compressed_allocated < bytes)
671 unsigned char *new_data = 0;
672 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
674 new_shmid = shmget(IPC_PRIVATE,
677 new_data = (unsigned char*)shmat(new_shmid, NULL, 0);
678 shmctl(new_shmid, IPC_RMID, 0);
682 // Have to use malloc for libpng
683 new_data = (unsigned char *)malloc(bytes);
686 bcopy(data, new_data, compressed_allocated);
689 if(memory_type == VFrame::PRIVATE)
699 if(memory_type == VFrame::SHMGET)
707 compressed_allocated = bytes;
712 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
714 shmid = shmget(IPC_PRIVATE,
717 data = (unsigned char*)shmat(shmid, NULL, 0);
718 shmctl(shmid, IPC_RMID, 0);
722 // Have to use malloc for libpng
723 data = (unsigned char *)malloc(bytes);
726 compressed_allocated = bytes;
733 int VFramePng::read_png(const unsigned char *data, long sz, double xscale, double yscale)
735 // Test for RAW format
736 if(data[0] == 'R' && data[1] == 'A' && data[2] == 'W' && data[3] == ' ') {
737 int new_color_model = BC_RGBA8888;
738 w = data[4] | (data[5] << 8) | (data[6] << 16) | (data[7] << 24);
739 h = data[8] | (data[9] << 8) | (data[10] << 16) | (data[11] << 24);
740 int components = data[12];
741 new_color_model = components == 3 ? BC_RGB888 : BC_RGBA8888;
742 // This shares the data directly
743 // reallocate(data + 20, 0, 0, 0, w, h, new_color_model, -1);
745 // Can't use shared data for theme since button constructions overlay the
747 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
748 memcpy(get_data(), data + 16, w * h * components);
751 else if(data[0] == 0x89 && data[1] == 'P' && data[2] == 'N' && data[3] == 'G') {
753 png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
754 png_infop info_ptr = png_create_info_struct(png_ptr);
758 image = data; image_size = sz;
759 png_set_read_fn(png_ptr, this, PngReadFunction::png_read_function);
760 png_read_info(png_ptr, info_ptr);
762 w = png_get_image_width(png_ptr, info_ptr);
763 h = png_get_image_height(png_ptr, info_ptr);
765 int src_color_model = png_get_color_type(png_ptr, info_ptr);
767 /* tell libpng to strip 16 bit/color files down to 8 bits/color */
768 png_set_strip_16(png_ptr);
770 /* extract multiple pixels with bit depths of 1, 2, and 4 from a single
771 * byte into separate bytes (useful for paletted and grayscale images).
773 png_set_packing(png_ptr);
775 /* expand paletted colors into true RGB triplets */
776 if (src_color_model == PNG_COLOR_TYPE_PALETTE)
777 png_set_expand(png_ptr);
779 /* expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
780 if (src_color_model == PNG_COLOR_TYPE_GRAY && png_get_bit_depth(png_ptr, info_ptr) < 8)
781 png_set_expand(png_ptr);
783 if (src_color_model == PNG_COLOR_TYPE_GRAY ||
784 src_color_model == PNG_COLOR_TYPE_GRAY_ALPHA)
785 png_set_gray_to_rgb(png_ptr);
787 /* expand paletted or RGB images with transparency to full alpha channels
788 * so the data will be available as RGBA quartets */
789 if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)){
791 png_set_expand(png_ptr);
794 switch(src_color_model)
796 case PNG_COLOR_TYPE_GRAY:
797 case PNG_COLOR_TYPE_RGB:
798 new_color_model = BC_RGB888;
801 case PNG_COLOR_TYPE_GRAY_ALPHA:
802 case PNG_COLOR_TYPE_RGB_ALPHA:
804 new_color_model = BC_RGBA8888;
807 case PNG_COLOR_TYPE_PALETTE:
809 new_color_model = BC_RGBA8888;
811 new_color_model = BC_RGB888;
814 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
816 //printf("VFrame::read_png %d %d %d %p\n", __LINE__, w, h, get_rows());
817 png_read_image(png_ptr, get_rows());
818 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
821 printf("VFrame::read_png %d: unknown file format"
822 " 0x%02x 0x%02x 0x%02x 0x%02x\n",
823 __LINE__, data[4], data[5], data[6], data[7]);
826 int ww = w * xscale, hh = h * yscale;
829 if( ww != w || hh != h ) {
830 VFrame vframe(*this);
831 reallocate(NULL, -1, 0, 0, 0, ww, hh, color_model, -1);
832 transfer_from(&vframe);
837 int VFrame::write_png(const char *path)
839 VFrame *vframe = this;
840 png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
841 png_infop info_ptr = png_create_info_struct(png_ptr);
842 FILE *out_fd = fopen(path, "w");
844 printf("VFrame::write_png %d %s %s\n", __LINE__, path, strerror(errno));
848 int png_cmodel = PNG_COLOR_TYPE_RGB;
849 int bc_cmodel = get_color_model();
850 switch( bc_cmodel ) {
851 case BC_RGB888: break;
852 case BC_RGBA8888: png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA; break;
853 case BC_A8: png_cmodel = PNG_COLOR_TYPE_GRAY; break;
855 bc_cmodel = BC_RGB888;
856 if( BC_CModels::has_alpha(bc_cmodel) ) {
857 bc_cmodel = BC_RGBA8888;
858 png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA;
860 vframe = new VFrame(get_w(), get_h(), bc_cmodel, 0);
861 vframe->transfer_from(this);
864 png_init_io(png_ptr, out_fd);
865 png_set_compression_level(png_ptr, 9);
866 png_set_IHDR(png_ptr, info_ptr, get_w(), get_h(), 8, png_cmodel,
867 PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
868 png_write_info(png_ptr, info_ptr);
869 png_write_image(png_ptr, vframe->get_rows());
870 png_write_end(png_ptr, info_ptr);
871 png_destroy_write_struct(&png_ptr, &info_ptr);
873 if( vframe != this ) delete vframe;
877 void VFrame::write_ppm(VFrame *vfrm, const char *fmt, ...)
882 vsnprintf(fn, sizeof(fn), fmt, ap);
884 FILE *fp = fopen(fn,"w");
885 if( !fp ) { perror("write_ppm"); return; }
887 if( frm->get_color_model() != BC_RGB888 ) {
888 frm = new VFrame(frm->get_w(), frm->get_h(), BC_RGB888);
889 frm->transfer_from(vfrm);
891 int w = frm->get_w(), h = frm->get_h();
892 fprintf(fp,"P6\n%d %d\n255\n",w,h);
893 unsigned char **rows = frm->get_rows();
894 for( int i=0; i<h; ++i ) fwrite(rows[i],3,w,fp);
896 if( frm != vfrm ) delete frm;
900 #define ZERO_YUV(components, type, max) \
902 for(int i = 0; i < h; i++) \
904 type *row = (type*)get_rows()[i]; \
905 for(int j = 0; j < w; j++) \
907 row[j * components] = 0; \
908 row[j * components + 1] = (max + 1) / 2; \
909 row[j * components + 2] = (max + 1) / 2; \
910 if(components == 4) row[j * components + 3] = 0; \
915 void VFrame::black_frame()
918 //printf("VFrame::black_frame %d\n", __LINE__);
919 switch(color_model) {
925 memset(get_u(), 0x80, w / 4 * h / 4);
926 memset(get_v(), 0x80, w / 4 * h / 4);
933 memset(get_u(), 0x80, sz / 4);
934 memset(get_v(), 0x80, sz / 4);
939 memset(get_u(), 0x80, sz / 2);
940 memset(get_v(), 0x80, sz / 2);
949 case BC_RGBA_FLOATP: if( a ) {
950 float *ap = (float *)a;
951 for( int i=sz; --i>=0; ++ap ) *ap = 0.f; }
952 case BC_RGB_FLOATP: {
953 float *rp = (float *)y;
954 for( int i=sz; --i>=0; ++rp ) *rp = 0.f;
955 float *gp = (float *)u;
956 for( int i=sz; --i>=0; ++gp ) *gp = 0.f;
957 float *bp = (float *)v;
958 for( int i=sz; --i>=0; ++bp ) *bp = 0.f;
962 memset(get_u(), 0x80, sz);
963 memset(get_v(), 0x80, sz);
967 ZERO_YUV(3, unsigned char, 0xff);
971 ZERO_YUV(4, unsigned char, 0xff);
975 ZERO_YUV(3, uint16_t, 0xffff);
978 case BC_YUVA16161616:
979 ZERO_YUV(4, uint16_t, 0xffff);
983 bzero(data, calculate_data_size(w, h, bytes_per_line, color_model));
988 void VFrame::set_clear_color(int color, int alpha)
993 int VFrame::get_clear_color() { return clear_color; }
994 int VFrame::get_clear_alpha() { return clear_alpha; }
996 void VFrame::clear_frame()
998 if( clear_color >= 0 &&
999 !BC_CModels::init_color(clear_color, clear_alpha,
1000 get_rows(), get_color_model(), get_y(), get_u(), get_v(),
1001 0,0, get_w(),get_h(), get_bytes_per_line()) )
1006 void VFrame::rotate90()
1008 // Allocate new frame
1009 int new_w = h, new_h = w;
1010 VFrame new_frame(new_w, new_h, color_model);
1011 unsigned char **new_rows = new_frame.get_rows();
1013 for(int in_y = 0, out_x = new_w - 1; in_y < h; in_y++, out_x--)
1015 for(int in_x = 0, out_y = 0; in_x < w; in_x++, out_y++)
1017 for(int k = 0; k < bytes_per_pixel; k++)
1019 new_rows[out_y][out_x * bytes_per_pixel + k] =
1020 rows[in_y][in_x * bytes_per_pixel + k];
1027 unsigned char *new_data = new_frame.data;
1028 new_frame.data = data;
1031 new_rows = new_frame.rows;
1032 new_frame.rows = rows;
1035 int new_shmid = new_frame.shmid;
1036 new_frame.shmid = shmid;
1038 // swap bytes_per_line
1039 int new_bpl = new_frame.bytes_per_line;
1040 new_frame.bytes_per_line = bytes_per_line;
1041 bytes_per_line = new_bpl;
1042 new_frame.clear_objects(0);
1048 void VFrame::rotate270()
1050 // Allocate new frame
1051 int new_w = h, new_h = w;
1052 VFrame new_frame(new_w, new_h, color_model);
1053 unsigned char **new_rows = new_frame.get_rows();
1055 for(int in_y = 0, out_x = 0; in_y < h; in_y++, out_x++)
1057 for(int in_x = 0, out_y = new_h - 1; in_x < w; in_x++, out_y--)
1059 for(int k = 0; k < bytes_per_pixel; k++)
1061 new_rows[out_y][out_x * bytes_per_pixel + k] =
1062 rows[in_y][in_x * bytes_per_pixel + k];
1069 unsigned char *new_data = new_frame.data;
1070 new_frame.data = data;
1073 new_rows = new_frame.rows;
1074 new_frame.rows = rows;
1077 int new_shmid = new_frame.shmid;
1078 new_frame.shmid = shmid;
1080 // swap bytes_per_line
1081 int new_bpl = new_frame.bytes_per_line;
1082 new_frame.bytes_per_line = bytes_per_line;
1083 bytes_per_line = new_bpl;
1084 new_frame.clear_objects(0);
1090 void VFrame::flip_vert()
1092 unsigned char temp[bytes_per_line];
1093 for( int i=0, j=h; --j>i; ++i ) {
1094 memcpy(temp, rows[j], bytes_per_line);
1095 memcpy(rows[j], rows[i], bytes_per_line);
1096 memcpy(rows[i], temp, bytes_per_line);
1100 void VFrame::flip_horiz()
1102 unsigned char temp[32];
1103 for(int i = 0; i < h; i++)
1105 unsigned char *row = rows[i];
1106 for(int j = 0; j < bytes_per_line / 2; j += bytes_per_pixel)
1108 memcpy(temp, row + j, bytes_per_pixel);
1109 memcpy(row + j, row + bytes_per_line - j - bytes_per_pixel, bytes_per_pixel);
1110 memcpy(row + bytes_per_line - j - bytes_per_pixel, temp, bytes_per_pixel);
1117 int VFrame::copy_from(VFrame *frame)
1119 if(this->w != frame->get_w() ||
1120 this->h != frame->get_h())
1122 printf("VFrame::copy_from %d sizes differ src %dx%d != dst %dx%d\n",
1131 int w = MIN(this->w, frame->get_w());
1132 int h = MIN(this->h, frame->get_h());
1133 timestamp = frame->timestamp;
1135 switch(frame->color_model)
1138 allocate_compressed_data(frame->compressed_size);
1139 memcpy(data, frame->data, frame->compressed_size);
1140 this->compressed_size = frame->compressed_size;
1144 memcpy(get_y(), frame->get_y(), w * h);
1145 memcpy(get_u(), frame->get_u(), w / 4 * h / 4);
1146 memcpy(get_v(), frame->get_v(), w / 4 * h / 4);
1152 //printf("%d %d %p %p %p %p %p %p\n", w, h, get_y(), get_u(), get_v(), frame->get_y(), frame->get_u(), frame->get_v());
1153 memcpy(get_y(), frame->get_y(), w * h);
1154 memcpy(get_u(), frame->get_u(), w * h / 4);
1155 memcpy(get_v(), frame->get_v(), w * h / 4);
1159 //printf("%d %d %p %p %p %p %p %p\n", w, h, get_y(), get_u(), get_v(), frame->get_y(), frame->get_u(), frame->get_v());
1160 memcpy(get_y(), frame->get_y(), w * h);
1161 memcpy(get_u(), frame->get_u(), w * h / 2);
1162 memcpy(get_v(), frame->get_v(), w * h / 2);
1166 //printf("%d %d %p %p %p %p %p %p\n", w, h, get_y(), get_u(), get_v(), frame->get_y(), frame->get_u(), frame->get_v());
1167 memcpy(get_y(), frame->get_y(), w * h);
1168 memcpy(get_u(), frame->get_u(), w * h);
1169 memcpy(get_v(), frame->get_v(), w * h);
1172 // printf("VFrame::copy_from %d\n", calculate_data_size(w,
1175 // frame->color_model));
1176 // Copy without extra 4 bytes in case the source is a hardware device
1177 memmove(data, frame->data, get_data_size());
1184 int VFrame::transfer_from(VFrame *that, int bg_color, int in_x, int in_y, int in_w, int in_h)
1186 timestamp = that->timestamp;
1189 if( in_x == 0 && in_y == 0 && in_w == that->get_w() && in_h == that->get_h() &&
1190 bg_color == 0 && this->get_color_model() == that->get_color_model() &&
1191 this->get_w() == that->get_w() && this->get_h() == that->get_h() &&
1192 this->get_bytes_per_line() == that->get_bytes_per_line() )
1193 return this->copy_from(that);
1196 BC_CModels::transfer(
1197 this->get_rows(), that->get_rows(), // Packed data out/in
1198 this->get_y(), this->get_u(), this->get_v(), // Planar data out/in
1199 that->get_y(), that->get_u(), that->get_v(),
1200 0, 0, that->get_w(), that->get_h(), // Dimensions in/out
1201 0, 0, this->get_w(), this->get_h(),
1202 that->get_color_model(), this->get_color_model(), // Color models in/out
1203 bg_color, // alpha blend bg_color
1204 that->get_bytes_per_line(),
1205 this->get_bytes_per_line()); // rowspans (of luma for YUV)
1207 unsigned char *in_ptrs[4], *out_ptrs[4];
1208 unsigned char **inp, **outp;
1209 if( BC_CModels::is_planar(that->get_color_model()) ) {
1210 in_ptrs[0] = that->get_y();
1211 in_ptrs[1] = that->get_u();
1212 in_ptrs[2] = that->get_v();
1213 in_ptrs[3] = that->get_a();
1217 inp = that->get_rows();
1218 if( BC_CModels::is_planar(this->get_color_model()) ) {
1219 out_ptrs[0] = this->get_y();
1220 out_ptrs[1] = this->get_u();
1221 out_ptrs[2] = this->get_v();
1222 out_ptrs[3] = this->get_a();
1226 outp = this->get_rows();
1227 BC_CModels::transfer(outp, this->get_color_model(),
1228 0, 0, this->get_w(), this->get_h(),
1229 this->get_bytes_per_line(),
1230 inp, that->get_color_model(),
1231 in_x, in_y, in_w, in_h,
1232 that->get_bytes_per_line(),
1239 int VFrame::get_scale_tables(int *column_table, int *row_table,
1240 int in_x1, int in_y1, int in_x2, int in_y2,
1241 int out_x1, int out_y1, int out_x2, int out_y2)
1244 float w_in = in_x2 - in_x1;
1245 float h_in = in_y2 - in_y1;
1246 int w_out = out_x2 - out_x1;
1247 int h_out = out_y2 - out_y1;
1249 float hscale = w_in / w_out;
1250 float vscale = h_in / h_out;
1252 for(i = 0; i < w_out; i++)
1254 column_table[i] = (int)(hscale * i);
1257 for(i = 0; i < h_out; i++)
1259 row_table[i] = (int)(vscale * i) + in_y1;
1264 void VFrame::push_prev_effect(const char *name)
1267 prev_effects.append(ptr = new char[strlen(name) + 1]);
1269 if(prev_effects.total > MAX_STACK_ELEMENTS) prev_effects.remove_object(0);
1272 void VFrame::pop_prev_effect()
1274 if(prev_effects.total)
1275 prev_effects.remove_object(prev_effects.last());
1278 void VFrame::push_next_effect(const char *name)
1281 next_effects.append(ptr = new char[strlen(name) + 1]);
1283 if(next_effects.total > MAX_STACK_ELEMENTS) next_effects.remove_object(0);
1286 void VFrame::pop_next_effect()
1288 if(next_effects.total)
1289 next_effects.remove_object(next_effects.last());
1292 const char* VFrame::get_next_effect(int number)
1294 if(!next_effects.total) return "";
1296 if(number > next_effects.total - 1) number = next_effects.total - 1;
1298 return next_effects.values[next_effects.total - number - 1];
1301 const char* VFrame::get_prev_effect(int number)
1303 if(!prev_effects.total) return "";
1305 if(number > prev_effects.total - 1) number = prev_effects.total - 1;
1307 return prev_effects.values[prev_effects.total - number - 1];
1310 BC_Hash* VFrame::get_params()
1315 void VFrame::clear_stacks()
1317 next_effects.remove_all_objects();
1318 prev_effects.remove_all_objects();
1323 void VFrame::copy_params(VFrame *src)
1325 status = src->status;
1326 params->copy_from(src->params);
1329 void VFrame::copy_stacks(VFrame *src)
1333 for( int i=0; i < src->next_effects.total; ++i )
1334 next_effects.append(cstrdup(src->next_effects[i]));
1335 for( int i=0; i < src->prev_effects.total; ++i )
1336 prev_effects.append(cstrdup(src->prev_effects[i]));
1341 int VFrame::copy_vframe(VFrame *frame)
1344 return copy_from(frame);
1347 int VFrame::equal_stacks(VFrame *src)
1349 for(int i = 0; i < src->next_effects.total && i < next_effects.total; i++)
1351 if(strcmp(src->next_effects.values[i], next_effects.values[i])) return 0;
1354 for(int i = 0; i < src->prev_effects.total && i < prev_effects.total; i++)
1356 if(strcmp(src->prev_effects.values[i], prev_effects.values[i])) return 0;
1359 if(!params->equivalent(src->params)) return 0;
1363 void VFrame::dump_stacks()
1365 printf("VFrame::dump_stacks\n");
1366 printf(" next_effects:\n");
1367 for(int i = next_effects.total - 1; i >= 0; i--)
1368 printf(" %s\n", next_effects.values[i]);
1369 printf(" prev_effects:\n");
1370 for(int i = prev_effects.total - 1; i >= 0; i--)
1371 printf(" %s\n", prev_effects.values[i]);
1374 void VFrame::dump_params()
1381 printf("VFrame::dump %d this=%p\n", __LINE__, this);
1382 printf(" w=%d h=%d colormodel=%d rows=%p use_shm=%d shmid=%d\n",
1383 w, h, color_model, rows, use_shm, shmid);
1387 int VFrame::get_memory_usage()
1389 if(get_compressed_allocated()) return get_compressed_allocated();
1390 return get_h() * get_bytes_per_line();
1393 // rgb component colors (eg. from colors.h)
1394 // a (~alpha) transparency, 0x00==solid .. 0xff==transparent
1395 void VFrame::set_pixel_color(int rgb, int a)
1397 pixel_rgb = (rgb&0xffffff) | ~a<<24;
1398 int ir = 0xff & (pixel_rgb >> 16);
1399 int ig = 0xff & (pixel_rgb >> 8);
1400 int ib = 0xff & (pixel_rgb >> 0);
1401 YUV::yuv.rgb_to_yuv_8(ir, ig, ib);
1402 pixel_yuv = (~a<<24) | (ir<<16) | (ig<<8) | (ib<<0);
1405 void VFrame::set_stiple(int mask)
1410 int VFrame::draw_pixel(int x, int y)
1412 if( x < 0 || y < 0 || x >= get_w() || y >= get_h() ) return 1;
1414 #define DRAW_PIXEL(type, r, g, b, comps, a) { \
1415 type **rows = (type**)get_rows(); \
1416 type *rp = rows[y], *bp = rp + x*comps; \
1418 if( comps > 1 ) { bp[1] = g; bp[2] = b; } \
1419 if( comps == 4 ) bp[3] = a; \
1421 float fr = 0, fg = 0, fb = 0, fa = 0;
1422 int pixel_color = BC_CModels::is_yuv(color_model) ? pixel_yuv : pixel_rgb;
1423 int ir = (0xff & (pixel_color >> 16));
1424 int ig = (0xff & (pixel_color >> 8));
1425 int ib = (0xff & (pixel_color >> 0));
1426 int ia = (0xff & (pixel_color >> 24)) ^ 0xff; // transparency, not opacity
1427 if( (x+y) & stipple ) {
1428 ir = 255 - ir; ig = 255 - ig; ib = 255 - ib;
1430 int rr = (ir<<8) | ir, gg = (ig<<8) | ig, bb = (ib<<8) | ib, aa = (ia<<8) | ia;
1431 if( BC_CModels::is_float(color_model) ) {
1432 fr = rr/65535.f; fg = gg/65535.f; fb = bb/65535.f; fa = aa/65535.f;
1435 switch(get_color_model()) {
1437 DRAW_PIXEL(uint8_t, ib, 0, 0, 1, 0);
1441 DRAW_PIXEL(uint8_t, ir, ig, ib, 3, 0);
1445 DRAW_PIXEL(uint8_t, ir, ig, ib, 4, ia);
1449 DRAW_PIXEL(uint16_t, rr, gg, bb, 3, 0);
1451 case BC_RGBA16161616:
1452 case BC_YUVA16161616:
1453 DRAW_PIXEL(uint16_t, rr, gg, bb, 4, aa);
1456 DRAW_PIXEL(float, fr, fg, fb, 3, 0);
1459 DRAW_PIXEL(float, fr, fg, fb, 4, fa);
1467 void VFrame::draw_line(int x1, int y1, int x2, int y2)
1470 int tx = x1; x1 = x2; x2 = tx;
1471 int ty = y1; y1 = y2; y2 = ty;
1475 int dx = x2-x1, dy = y2-y1;
1476 int dx2 = 2*dx, dy2 = 2*dy;
1477 if( dx < 0 ) dx = -dx;
1478 int r = dx > dy ? dx : dy, n = r;
1480 if( dx2 < 0 ) dir += 1;
1482 if( dx2 >= 0 ) do { /* +Y, +X */
1484 if( (r -= dx2) < 0 ) { r += dy2; ++x; }
1485 } while( --n >= 0 );
1486 else do { /* +Y, -X */
1488 if( (r += dx2) < 0 ) { r += dy2; --x; }
1489 } while( --n >= 0 );
1492 if( dx2 >= 0 ) do { /* +X, +Y */
1494 if( (r -= dy2) < 0 ) { r += dx2; ++y; }
1495 } while( --n >= 0 );
1496 else do { /* -X, +Y */
1498 if( (r -= dy2) < 0 ) { r -= dx2; ++y; }
1499 } while( --n >= 0 );
1503 // g++ -dD -E - < /dev/null | grep DBL_EPSILON
1504 #ifndef __DBL_EPSILON__
1505 #define __DBL_EPSILON__ ((double)2.22044604925031308085e-16L)
1507 // weakest fraction * graphics integer range
1508 #define RND_EPSILON (__DBL_EPSILON__*65536)
1511 int rnd(double v) { return round(v)+RND_EPSILON; }
1514 int sx, sy, ex, ey; /* current point, end point */
1515 int xs, ys; /* x/y quadrant sign -1/1 */
1516 int64_t A, B, C; /* quadratic coefficients */
1517 int64_t r, dx, dy; /* residual, dr/dx and dr/dy */
1518 int xmxx, xmxy; /* x,y at apex */
1521 void init0(int x1,int y1, int x2,int y2, int x3,int y3, int top);
1522 void init1(int x1,int y1, int x2,int y2, int x3,int y3);
1523 int64_t rx() { return r + xs*8*dx + 4*A; }
1524 void moveX(int64_t r) {
1525 dx += xs*A; dy -= xs*B;
1526 this->r = r; sx += xs;
1528 int64_t ry() { return r + 8*dy + 4*C; }
1529 void moveY(int64_t r) {
1535 smooth_line(VFrame *vframe) { this->vframe = vframe; this->done = 0; }
1539 void smooth_line::draw()
1542 if( abs(dy) >= abs(dx) ) {
1543 if( xs*(sx-xmxx) >= 0 ) {
1544 if( ys > 0 ) { done = 1; return; }
1545 if( dy < 0 || ry() < 0 ) { moveY(ry()); goto xit; }
1546 xmxx = ex; xmxy = ey;
1551 if( abs(rr) < abs(r) )
1556 if( ys > 0 ) { done = 1; return; }
1557 xmxx = ex; xmxy = ey;
1562 if( abs(rr) < abs(r) )
1565 xit: vframe->draw_pixel(sx, sy);
1568 void VFrame::draw_smooth(int x1, int y1, int x2, int y2, int x3, int y3)
1570 if( (x1 == x2 && y1 == y2) || (x2 == x3 && y2 == y3) )
1571 draw_line(x1,y1, x3,y3);
1572 else if( x1 == x3 && y1 == y3 )
1573 draw_line(x1,y1, x2,y2);
1574 else if( (x2-x1) * (y2-y3) == (x2-x3) * (y2-y1) ) {
1575 // co-linear, draw line from min to max
1577 if( x2 < x1 ) { x1 = x2; y1 = y2; }
1578 if( x2 > x3 ) { x3 = x2; y3 = y2; }
1581 if( x2 > x1 ) { x1 = x2; y1 = y2; }
1582 if( x2 < x3 ) { x3 = x2; y3 = y2; }
1584 draw_line(x1,y1, x3,y3);
1587 smooth_draw(x1, y1, x2, y2, x3, y3);
1591 Non-Parametric Smooth Curve Generation. Don Kelly 1984
1598 Let the starting point be P. the ending point R. and the tangent vertex Q.
1599 A general point Z on the curve is then
1600 Z = (P + R - Q) + (Q - P) sin t + (Q - R) cos t
1602 Expanding the Cartesian coordinates around (P + R - Q) gives
1603 [x y] = Z - (P + R - Q)
1606 x = a*sin(t) + b*cos(t)
1607 y = c*sin(t) + d*cos(t)
1609 from which t can now be eliminated via
1610 c*x - a*y = (c*b - a*d)*cos(t)
1611 d*x - b*y = (a*d - c*b)*sin(t)
1613 giving the Cartesian equation for the ellipse as
1614 f(x, y) = (c*x - a*y)**2 + (d*x - b*y)**2 - (a*d - c*b)**2 = 0
1616 or: f(x, y) = A*x**2 - 2*B*x*y + C*y**2 + B**2 - A*C = 0
1617 where: A = c**2 + d**2, B = a*c + b*d, C = a**2 + b**2
1619 The maximum y extent of the ellipse may now be derived as follows:
1620 let df/dx = 0, 2*A*x = 2*B*y, x = y*B/A
1621 f(x, y) == B**2 * y**2 / A - 2*B**2 * y**2 / A + C*y**2 + B**2 - A*C = 0
1622 (A*C - B**2)*y = (A*C - B**2)*A
1623 max x = sqrt(C), at y = B/sqrt(C)
1624 max y = sqrt(A), at x = B/sqrt(A)
1629 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1630 * draw from P to Q to R if top=0
1631 * or from P to (x,ymax) if top>0
1632 * or from Q to (x,ymax) if top<0
1634 void smooth_line::init0(int x1,int y1, int x2,int y2, int x3,int y3, int top)
1636 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1638 int a = x2-x1, c = y2-y1;
1639 int b = x2-x3, d = y2-y3;
1640 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1642 sx = top >= 0 ? x1 : x3;
1643 sy = top >= 0 ? y1 : y3;
1644 xs = x2 > sx || (x2==sx && (x1+x3-sx)>=x2) ? 1 : -1;
1645 int64_t px = sx-x0, py = sy-y0;
1646 dx = A*px - B*py; dy = C*py - B*px;
1650 double ymy = sqrt(A), ymx = B/ymy;
1658 ys = a*b > 0 && (!top || top*xs*(b*c - a*d) > 0) ? -1 : 1;
1660 double xmx = xs*sqrt(C), xmy = B/xmx;
1661 xmxx = x0 + rnd(xmx);
1662 xmxy = y0 + rnd(xmy);
1665 xmxx = ex; xmxy = ey;
1669 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1670 * draw from (x,ymax) to P
1672 void smooth_line::init1(int x1,int y1, int x2,int y2, int x3,int y3)
1674 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1676 int a = x2-x1, c = y2-y1;
1677 int b = x2-x3, d = y2-y3;
1678 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1680 double ymy = -sqrt(A), ymx = B/ymy;
1681 int64_t px = rnd(ymx), py = rnd(ymy);
1682 sx = x0 + px; ex = x1;
1683 sy = y0 + py; ey = y1;
1684 xs = x2 > x1 || (x2==x1 && x3>=x2) ? 1 : -1;
1685 dx = A*px - B*py; dy = C*py - B*px;
1686 r = 4 * (A*px*px - 2*B*px*py + C*py*py + B*B - A*C);
1688 ys = a*b > 0 && xs*(b*c - a*d) < 0 ? -1 : 1;
1690 double xmx = xs*sqrt(C), xmy = B/xmx;
1691 xmxx = x0 + rnd(xmx);
1692 xmxy = y0 + rnd(xmy);
1696 xmxx = ex; xmxy = ey;
1699 vframe->draw_pixel(sx, sy);
1700 while( xs*(sx-xmxx) < 0 && (xs*dx < 0 || rx() < 0) ) {
1702 vframe->draw_pixel(sx, sy);
1707 void VFrame::smooth_draw(int x1, int y1, int x2, int y2, int x3, int y3)
1709 //printf("p smooth_draw( %d,%d, %d,%d, %d,%d )\n", x1,y1,x2,y2,x3,y3);
1710 if( y1 > y3 ) { // make y3 >= y1
1711 int xt = x1; x1 = x3; x3 = xt;
1712 int yt = y1; y1 = y3; y3 = yt;
1714 if( y1 > y2 && y3 > y2 ) {
1715 smooth_line lt(this), rt(this); // Q on bottom
1716 lt.init1(x1, y1, x2, y2, x3, y3);
1717 rt.init1(x3, y3, x2, y2, x1, y1);
1718 while( !lt.done || !rt.done ) {
1723 else if( y1 < y2 && y3 < y2 ) {
1724 smooth_line lt(this), rt(this); // Q on top
1725 lt.init0(x1, y1, x2, y2, x3, y3, 1);
1726 draw_pixel(lt.sx, lt.sy);
1727 rt.init0(x1, y1, x2, y2, x3, y3, -1);
1728 draw_pixel(rt.sx, rt.sy);
1729 while( !lt.done || !rt.done ) {
1735 smooth_line pt(this); // Q in between
1736 pt.init0(x1, y1, x2, y2, x3, y3, 0);
1737 draw_pixel(pt.sx, pt.sy);
1745 void VFrame::draw_rect(int x1, int y1, int x2, int y2)
1747 draw_line(x1, y1, x2, y1);
1748 draw_line(x2, y1 + 1, x2, y2);
1749 draw_line(x2 - 1, y2, x1, y2);
1750 draw_line(x1, y2 - 1, x1, y1 + 1);
1754 void VFrame::draw_oval(int x1, int y1, int x2, int y2)
1758 int center_x = (x2 + x1) / 2;
1759 int center_y = (y2 + y1) / 2;
1762 //printf("VFrame::draw_oval %d %d %d %d %d\n", __LINE__, x1, y1, x2, y2);
1764 for(int i = 0; i < h / 2; i++) {
1765 // A^2 = -(B^2) + C^2
1766 x_table[i] = (int)(sqrt(-SQR(h / 2 - i) + SQR(h / 2)) * w / h);
1767 //printf("VFrame::draw_oval %d i=%d x=%d\n", __LINE__, i, x_table[i]);
1770 for(int i = 0; i < h / 2 - 1; i++) {
1771 int x3 = x_table[i];
1772 int x4 = x_table[i + 1];
1775 for(int j = x3; j < x4; j++) {
1776 draw_pixel(center_x + j, y1 + i);
1777 draw_pixel(center_x - j, y1 + i);
1778 draw_pixel(center_x + j, y2 - i - 1);
1779 draw_pixel(center_x - j, y2 - i - 1);
1783 draw_pixel(center_x + x3, y1 + i);
1784 draw_pixel(center_x - x3, y1 + i);
1785 draw_pixel(center_x + x3, y2 - i - 1);
1786 draw_pixel(center_x - x3, y2 - i - 1);
1790 draw_pixel(center_x, y1);
1791 draw_pixel(center_x, y2 - 1);
1792 draw_pixel(x1, center_y);
1793 draw_pixel(x2 - 1, center_y);
1794 draw_pixel(x1, center_y - 1);
1795 draw_pixel(x2 - 1, center_y - 1);
1799 void VFrame::draw_arrow(int x1, int y1, int x2, int y2, int sz)
1801 double angle = atan((float)(y2 - y1) / (float)(x2 - x1));
1802 double angle1 = angle + (float)145 / 360 * 2 * M_PI;
1803 double angle2 = angle - (float)145 / 360 * 2 * M_PI;
1804 int s = x2 < x1 ? -1 : 1;
1805 int x3 = x2 + s * (int)(sz * cos(angle1));
1806 int y3 = y2 + s * (int)(sz * sin(angle1));
1807 int x4 = x2 + s * (int)(sz * cos(angle2));
1808 int y4 = y2 + s * (int)(sz * sin(angle2));
1811 draw_line(x1, y1, x2, y2);
1812 // draw_line(x1, y1 + 1, x2, y2 + 1);
1815 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x3, y3);
1817 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x4, y4);
1820 void VFrame::draw_x(int x, int y, int sz)
1822 draw_line(x-sz,y-sz, x+sz,y+sz);
1823 draw_line(x+sz,y-sz, x-sz,y+sz);
1825 void VFrame::draw_t(int x, int y, int sz)
1827 draw_line(x,y-sz, x,y+sz);
1828 draw_line(x+sz,y, x-sz,y);