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
34 #include "bcpbuffer.h"
35 #include "bcresources.h"
36 #include "bcsignals.h"
37 #include "bcsynchronous.h"
38 #include "bctexture.h"
39 #include "bcwindowbase.h"
41 #include "bccmodels.h"
47 static void png_read_function(png_structp png_ptr,
48 png_bytep data, png_size_t length)
50 VFrame *frame = (VFrame*)png_get_io_ptr(png_ptr);
51 if(frame->image_size - frame->image_offset < (long)length)
53 printf("PngReadFunction::png_read_function %d: overrun\n", __LINE__);
54 length = frame->image_size - frame->image_offset;
57 memcpy(data, &frame->image[frame->image_offset], length);
58 frame->image_offset += length;
68 VFrameScene::VFrameScene()
72 VFrameScene::~VFrameScene()
77 //static BCCounter counter;
79 VFramePng::VFramePng(unsigned char *png_data, double s)
82 ((long)png_data[0] << 24) | ((long)png_data[1] << 16) |
83 ((long)png_data[2] << 8) | (long)png_data[3];
84 if( !s ) s = BC_WindowBase::get_resources()->icon_scale;
85 read_png(png_data+4, image_size, s, s);
88 VFramePng::VFramePng(unsigned char *png_data, long image_size, double xs, double ys)
90 if( !xs ) xs = BC_WindowBase::get_resources()->icon_scale;
91 if( !ys ) ys = BC_WindowBase::get_resources()->icon_scale;
92 read_png(png_data, image_size, xs, ys);
95 VFramePng::~VFramePng()
99 VFrame *VFramePng::vframe_png(int fd, double xs, double ys)
102 if( fstat(fd, &st) ) return 0;
103 long len = st.st_size;
106 unsigned char *bfr = (unsigned char *)
107 ::mmap (NULL, len, PROT_READ, MAP_SHARED, fd, 0);
108 if( bfr == MAP_FAILED ) return 0;
109 VFrame *vframe = new VFramePng(bfr, len, xs, ys);
110 if( (w=vframe->get_w()) <= 0 || (h=vframe->get_h()) <= 0 ||
111 vframe->get_data() == 0 ) { delete vframe; vframe = 0; }
115 VFrame *VFramePng::vframe_png(const char *png_path, double xs, double ys)
118 int fd = ::open(png_path, O_RDONLY);
120 vframe = vframe_png(fd, xs, ys);
126 VFrame::VFrame(VFrame &frame)
129 params = new BC_Hash;
130 use_shm = frame.use_shm;
131 allocate_data(0, -1, 0, 0, 0, frame.w, frame.h,
132 frame.color_model, frame.bytes_per_line);
137 VFrame::VFrame(int w, int h, int color_model, long bytes_per_line)
140 // use bytes_per_line == 0 to allocate default unshared
141 if( !bytes_per_line ) { bytes_per_line = -1; use_shm = 0; }
142 params = new BC_Hash;
143 allocate_data(data, -1, 0, 0, 0, w, h,
144 color_model, bytes_per_line);
147 VFrame::VFrame(unsigned char *data, int shmid, int w, int h,
148 int color_model, long bytes_per_line)
151 params = new BC_Hash;
152 allocate_data(data, shmid, 0, 0, 0, w, h,
153 color_model, bytes_per_line);
156 VFrame::VFrame(unsigned char *data, int shmid,
157 long y_offset, long u_offset, long v_offset,
158 int w, int h, int color_model, long bytes_per_line)
161 params = new BC_Hash;
162 allocate_data(data, shmid, y_offset, u_offset, v_offset, w, h,
163 color_model, bytes_per_line);
166 VFrame::VFrame(BC_Bitmap *bitmap, int w, int h,
167 int color_model, long bytes_per_line)
170 params = new BC_Hash;
172 unsigned char *data = 0;
173 if( bitmap->is_shared() )
174 shmid = bitmap->get_shmid();
176 data = bitmap->get_data();
177 allocate_data(data, shmid,
178 bitmap->get_y_offset(),
179 bitmap->get_u_offset(),
180 bitmap->get_v_offset(),
181 w, h, color_model, bytes_per_line);
187 params = new BC_Hash;
188 this->color_model = BC_COMPRESSED;
196 // Delete effect stack
197 prev_effects.remove_all_objects();
198 next_effects.remove_all_objects();
203 int VFrame::equivalent(VFrame *src, int test_stacks)
205 return (src->get_color_model() == get_color_model() &&
206 src->get_w() == get_w() &&
207 src->get_h() == get_h() &&
208 src->bytes_per_line == bytes_per_line &&
209 (!test_stacks || equal_stacks(src)));
212 int VFrame::data_matches(VFrame *frame)
214 if(data && frame->get_data() &&
215 frame->params_match(get_w(), get_h(), get_color_model()) &&
216 get_data_size() == frame->get_data_size())
218 int data_size = get_data_size();
219 unsigned char *ptr1 = get_data();
220 unsigned char *ptr2 = frame->get_data();
221 for(int i = 0; i < data_size; i++)
223 if(*ptr1++ != *ptr2++) return 0;
230 // long VFrame::set_shm_offset(long offset)
232 // shm_offset = offset;
236 // long VFrame::get_shm_offset()
238 // return shm_offset;
241 int VFrame::get_memory_type()
246 int VFrame::params_match(int w, int h, int color_model)
248 return (this->w == w &&
250 this->color_model == color_model);
254 int VFrame::reset_parameters(int do_opengl)
259 memory_type = VFrame::PRIVATE;
267 compressed_allocated = 0;
268 compressed_size = 0; // Size of current image
275 sequence_number = -1;
278 pixel_rgb = 0x000000; // BLACK
279 pixel_yuv = 0x008080;
281 draw_flags = ALIAS_OFF;
283 clear_color = 0x000000;
288 // By default, anything is going to be done in RAM
289 opengl_state = VFrame::RAM;
294 prev_effects.set_array_delete();
295 next_effects.set_array_delete();
299 int VFrame::clear_objects(int do_opengl)
312 if( memory_type != VFrame::SHARED )
313 printf("==del %p from %p\n", data, __builtin_return_address(0));
319 case VFrame::PRIVATE:
321 // if(this->w * this->h > 1500 * 1100)
322 // printf("VFrame::clear_objects 2 this=%p data=%p\n", this, data);
325 //printf("VFrame::clear_objects %d this=%p shmid=%p data=%p\n", __LINE__, this, shmid, data);
345 // Delete row pointers
370 int VFrame::get_field2_offset()
372 return field2_offset;
375 int VFrame::set_field2_offset(int value)
377 this->field2_offset = value;
381 void VFrame::set_keyframe(int value)
383 this->is_keyframe = value;
386 int VFrame::get_keyframe()
391 void VFrame::get_temp(VFrame *&vfrm, int w, int h, int color_model)
393 if( vfrm && ( vfrm->color_model != color_model ||
394 vfrm->get_w() != w || vfrm->get_h() != h ) ) {
395 delete vfrm; vfrm = 0;
397 if( !vfrm ) vfrm = new VFrame(w, h, color_model, 0);
402 VFrameScene* VFrame::get_scene()
407 int VFrame::calculate_bytes_per_pixel(int color_model)
409 return BC_CModels::calculate_pixelsize(color_model);
412 long VFrame::get_bytes_per_line()
414 return bytes_per_line;
417 long VFrame::get_data_size()
419 return calculate_data_size(w, h, bytes_per_line, color_model) - 4;
422 long VFrame::calculate_data_size(int w, int h, int bytes_per_line, int color_model)
424 return BC_CModels::calculate_datasize(w, h, bytes_per_line, color_model);
427 void VFrame::create_row_pointers()
430 switch(color_model) {
432 if( this->v_offset ) break;
435 this->v_offset = sz + w / 4 * h / 4;
441 if( this->v_offset ) break;
444 this->v_offset = sz + sz / 4;
448 if( this->v_offset ) break;
451 this->v_offset = sz + sz / 2;
454 if( this->v_offset ) break;
457 this->v_offset = sz + sz;
460 if( this->v_offset ) break;
462 this->u_offset = sz * sizeof(uint8_t);
463 this->v_offset = 2 * sz * sizeof(uint8_t);
466 if( this->v_offset || a ) break;
467 a = this->data + 3 * sz * sizeof(float);
469 if( this->v_offset ) break;
471 this->u_offset = sz * sizeof(float);
472 this->v_offset = 2 * sz * sizeof(float);
476 rows = new unsigned char*[h];
477 for(int i = 0; i < h; i++)
478 rows[i] = &this->data[i * this->bytes_per_line];
481 y = this->data + this->y_offset;
482 u = this->data + this->u_offset;
483 v = this->data + this->v_offset;
486 int VFrame::allocate_data(unsigned char *data, int shmid,
487 long y_offset, long u_offset, long v_offset, int w, int h,
488 int color_model, long bytes_per_line)
492 this->color_model = color_model;
493 this->bytes_per_pixel = calculate_bytes_per_pixel(color_model);
494 this->y_offset = this->u_offset = this->v_offset = 0;
496 // printf("VFrame::allocate_data %d shmid == 0\n", __LINE__, shmid);
499 this->bytes_per_line = bytes_per_line >= 0 ?
500 bytes_per_line : this->bytes_per_pixel * w;
502 // Allocate data + padding for MMX
504 //printf("VFrame::allocate_data %d %p\n", __LINE__, this->data);
505 memory_type = VFrame::SHARED;
508 this->y_offset = y_offset;
509 this->u_offset = u_offset;
510 this->v_offset = v_offset;
512 else if(shmid >= 0) {
513 memory_type = VFrame::SHMGET;
514 this->data = (unsigned char*)shmat(shmid, NULL, 0);
515 //printf("VFrame::allocate_data %d shmid=%d data=%p\n", __LINE__, shmid, this->data);
517 this->y_offset = y_offset;
518 this->u_offset = u_offset;
519 this->v_offset = v_offset;
522 memory_type = VFrame::PRIVATE;
524 int size = calculate_data_size(this->w, this->h,
525 this->bytes_per_line, this->color_model);
526 if( use_shm && size >= SHM_MIN_SIZE &&
527 BC_WindowBase::get_resources()->use_vframe_shm() ) {
528 this->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0777);
529 if( this->shmid >= 0 ) {
530 this->data = (unsigned char*)shmat(this->shmid, NULL, 0);
531 //printf("VFrame::allocate_data %d %d %d %p\n", __LINE__, size, this->shmid, this->data);
532 // This causes it to automatically delete when the program exits.
533 shmctl(this->shmid, IPC_RMID, 0);
536 printf("VFrame::allocate_data %d could not allocate"
537 " shared memory, %dx%d (model %d) size=0x%08x\n",
538 __LINE__, w, h, color_model, size);
539 BC_Trace::dump_shm_stats(stdout);
542 // Have to use malloc for libpng
544 this->data = (unsigned char *)malloc(size);
548 // if(this->w * this->h > 1500 * 1100)
549 // printf("VFrame::allocate_data 2 this=%p w=%d h=%d this->data=%p\n",
550 // this, this->w, this->h, this->data);
553 printf("VFrame::allocate_data %dx%d: memory exhausted.\n", this->w, this->h);
555 printf("==new %p from %p sz %d\n", this->data, __builtin_return_address(0), size);
558 //printf("VFrame::allocate_data %d %p data=%p %d %d\n", __LINE__, this, this->data, this->w, this->h);
559 //if(size > 1000000) printf("VFrame::allocate_data %d\n", size);
562 // Create row pointers
563 create_row_pointers();
567 void VFrame::set_memory(unsigned char *data,
577 memory_type = VFrame::SHARED;
580 this->y_offset = y_offset;
581 this->u_offset = u_offset;
582 this->v_offset = v_offset;
587 memory_type = VFrame::SHMGET;
588 this->data = (unsigned char*)shmat(shmid, NULL, 0);
592 y = this->data + this->y_offset;
593 u = this->data + this->u_offset;
594 v = this->data + this->v_offset;
596 create_row_pointers();
599 void VFrame::set_memory(BC_Bitmap *bitmap)
602 unsigned char *data = 0;
603 if( bitmap->is_shared() && !bitmap->is_zombie() )
604 shmid = bitmap->get_shmid();
606 data = bitmap->get_data();
607 set_memory(data, shmid,
608 bitmap->get_y_offset(),
609 bitmap->get_u_offset(),
610 bitmap->get_v_offset());
613 void VFrame::set_compressed_memory(unsigned char *data,
622 memory_type = VFrame::SHARED;
629 memory_type = VFrame::SHMGET;
630 this->data = (unsigned char*)shmat(shmid, NULL, 0);
634 this->compressed_allocated = data_allocated;
635 this->compressed_size = data_size;
639 // Reallocate uncompressed buffer with or without alpha
640 int VFrame::reallocate(
651 // if(shmid == 0) printf("VFrame::reallocate %d shmid=%d\n", __LINE__, shmid);
653 // reset_parameters(0);
666 int VFrame::allocate_compressed_data(long bytes)
668 if(bytes < 1) return 1;
670 // Want to preserve original contents
671 if(data && compressed_allocated < bytes)
674 unsigned char *new_data = 0;
675 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
677 new_shmid = shmget(IPC_PRIVATE,
680 new_data = (unsigned char*)shmat(new_shmid, NULL, 0);
681 shmctl(new_shmid, IPC_RMID, 0);
685 // Have to use malloc for libpng
686 new_data = (unsigned char *)malloc(bytes);
689 bcopy(data, new_data, compressed_allocated);
692 if(memory_type == VFrame::PRIVATE)
702 if(memory_type == VFrame::SHMGET)
710 compressed_allocated = bytes;
715 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
717 shmid = shmget(IPC_PRIVATE,
720 data = (unsigned char*)shmat(shmid, NULL, 0);
721 shmctl(shmid, IPC_RMID, 0);
725 // Have to use malloc for libpng
726 data = (unsigned char *)malloc(bytes);
729 compressed_allocated = bytes;
736 int VFramePng::read_png(const unsigned char *data, long sz, double xscale, double yscale)
738 // Test for RAW format
739 if(data[0] == 'R' && data[1] == 'A' && data[2] == 'W' && data[3] == ' ') {
740 int new_color_model = BC_RGBA8888;
741 w = data[4] | (data[5] << 8) | (data[6] << 16) | (data[7] << 24);
742 h = data[8] | (data[9] << 8) | (data[10] << 16) | (data[11] << 24);
743 int components = data[12];
744 new_color_model = components == 3 ? BC_RGB888 : BC_RGBA8888;
745 // This shares the data directly
746 // reallocate(data + 20, 0, 0, 0, w, h, new_color_model, -1);
748 // Can't use shared data for theme since button constructions overlay the
750 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
751 memcpy(get_data(), data + 16, w * h * components);
754 else if(data[0] == 0x89 && data[1] == 'P' && data[2] == 'N' && data[3] == 'G') {
756 png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
757 png_infop info_ptr = png_create_info_struct(png_ptr);
761 image = data; image_size = sz;
762 png_set_read_fn(png_ptr, this, PngReadFunction::png_read_function);
763 png_read_info(png_ptr, info_ptr);
765 w = png_get_image_width(png_ptr, info_ptr);
766 h = png_get_image_height(png_ptr, info_ptr);
768 int src_color_model = png_get_color_type(png_ptr, info_ptr);
770 /* tell libpng to strip 16 bit/color files down to 8 bits/color */
771 png_set_strip_16(png_ptr);
773 /* extract multiple pixels with bit depths of 1, 2, and 4 from a single
774 * byte into separate bytes (useful for paletted and grayscale images).
776 png_set_packing(png_ptr);
778 /* expand paletted colors into true RGB triplets */
779 if (src_color_model == PNG_COLOR_TYPE_PALETTE)
780 png_set_expand(png_ptr);
782 /* expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
783 if (src_color_model == PNG_COLOR_TYPE_GRAY && png_get_bit_depth(png_ptr, info_ptr) < 8)
784 png_set_expand(png_ptr);
786 if (src_color_model == PNG_COLOR_TYPE_GRAY_ALPHA)
787 png_set_gray_to_rgb(png_ptr);
789 /* expand paletted or RGB images with transparency to full alpha channels
790 * so the data will be available as RGBA quartets */
791 if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)){
793 png_set_expand(png_ptr);
796 switch(src_color_model) {
797 case PNG_COLOR_TYPE_GRAY:
798 new_color_model = BC_GREY8;
800 case PNG_COLOR_TYPE_RGB:
801 new_color_model = BC_RGB888;
803 case PNG_COLOR_TYPE_PALETTE:
804 new_color_model = have_alpha ? BC_RGBA8888 : BC_RGB888;
806 case PNG_COLOR_TYPE_GRAY_ALPHA:
807 case PNG_COLOR_TYPE_RGB_ALPHA:
809 new_color_model = BC_RGBA8888;
812 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
814 //printf("VFrame::read_png %d %d %d %p\n", __LINE__, w, h, get_rows());
815 png_read_image(png_ptr, get_rows());
816 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
819 printf("VFrame::read_png %d: unknown file format"
820 " 0x%02x 0x%02x 0x%02x 0x%02x\n",
821 __LINE__, data[4], data[5], data[6], data[7]);
824 int ww = w * xscale, hh = h * yscale;
827 if( ww != w || hh != h ) {
828 VFrame vframe(*this);
829 reallocate(NULL, -1, 0, 0, 0, ww, hh, color_model, -1);
830 transfer_from(&vframe);
835 int VFrame::write_png(const char *path)
837 VFrame *vframe = this;
838 png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
839 png_infop info_ptr = png_create_info_struct(png_ptr);
840 FILE *out_fd = fopen(path, "w");
842 printf("VFrame::write_png %d %s %s\n", __LINE__, path, strerror(errno));
846 int png_cmodel = PNG_COLOR_TYPE_RGB;
847 int bc_cmodel = get_color_model();
848 switch( bc_cmodel ) {
849 case BC_RGB888: break;
850 case BC_RGBA8888: png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA; break;
851 case BC_A8: png_cmodel = PNG_COLOR_TYPE_GRAY; break;
853 bc_cmodel = BC_RGB888;
854 if( BC_CModels::has_alpha(bc_cmodel) ) {
855 bc_cmodel = BC_RGBA8888;
856 png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA;
858 vframe = new VFrame(get_w(), get_h(), bc_cmodel, 0);
859 vframe->transfer_from(this);
862 png_init_io(png_ptr, out_fd);
863 png_set_compression_level(png_ptr, 9);
864 png_set_IHDR(png_ptr, info_ptr, get_w(), get_h(), 8, png_cmodel,
865 PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
866 png_write_info(png_ptr, info_ptr);
867 png_write_image(png_ptr, vframe->get_rows());
868 png_write_end(png_ptr, info_ptr);
869 png_destroy_write_struct(&png_ptr, &info_ptr);
871 if( vframe != this ) delete vframe;
875 void VFrame::write_ppm(VFrame *vfrm, const char *fmt, ...)
880 vsnprintf(fn, sizeof(fn), fmt, ap);
882 FILE *fp = fopen(fn,"w");
883 if( !fp ) { perror("write_ppm"); return; }
885 if( frm->get_color_model() != BC_RGB888 ) {
886 frm = new VFrame(frm->get_w(), frm->get_h(), BC_RGB888);
887 frm->transfer_from(vfrm);
889 int w = frm->get_w(), h = frm->get_h();
890 fprintf(fp,"P6\n%d %d\n255\n",w,h);
891 unsigned char **rows = frm->get_rows();
892 for( int i=0; i<h; ++i ) fwrite(rows[i],3,w,fp);
894 if( frm != vfrm ) delete frm;
898 #define ZERO_YUV(components, type, max) \
900 for(int i = 0; i < h; i++) \
902 type *row = (type*)get_rows()[i]; \
903 for(int j = 0; j < w; j++) \
905 row[j * components] = 0; \
906 row[j * components + 1] = (max + 1) / 2; \
907 row[j * components + 2] = (max + 1) / 2; \
908 if(components == 4) row[j * components + 3] = 0; \
913 void VFrame::black_frame()
916 //printf("VFrame::black_frame %d\n", __LINE__);
917 switch(color_model) {
923 memset(get_u(), 0x80, w / 4 * h / 4);
924 memset(get_v(), 0x80, w / 4 * h / 4);
931 memset(get_u(), 0x80, sz / 4);
932 memset(get_v(), 0x80, sz / 4);
937 memset(get_u(), 0x80, sz / 2);
938 memset(get_v(), 0x80, sz / 2);
947 case BC_RGBA_FLOATP: if( a ) {
948 float *ap = (float *)a;
949 for( int i=sz; --i>=0; ++ap ) *ap = 0.f; }
950 case BC_RGB_FLOATP: {
951 float *rp = (float *)y;
952 for( int i=sz; --i>=0; ++rp ) *rp = 0.f;
953 float *gp = (float *)u;
954 for( int i=sz; --i>=0; ++gp ) *gp = 0.f;
955 float *bp = (float *)v;
956 for( int i=sz; --i>=0; ++bp ) *bp = 0.f;
960 memset(get_u(), 0x80, sz);
961 memset(get_v(), 0x80, sz);
965 ZERO_YUV(3, unsigned char, 0xff);
969 ZERO_YUV(4, unsigned char, 0xff);
973 ZERO_YUV(3, uint16_t, 0xffff);
976 case BC_YUVA16161616:
977 ZERO_YUV(4, uint16_t, 0xffff);
981 bzero(data, calculate_data_size(w, h, bytes_per_line, color_model));
986 void VFrame::set_clear_color(int color, int alpha)
991 int VFrame::get_clear_color() { return clear_color; }
992 int VFrame::get_clear_alpha() { return clear_alpha; }
994 void VFrame::clear_frame()
996 if( clear_color >= 0 &&
997 !BC_CModels::init_color(clear_color, clear_alpha,
998 get_rows(), get_color_model(), get_y(), get_u(), get_v(),
999 0,0, get_w(),get_h(), get_bytes_per_line()) )
1004 void VFrame::rotate90()
1006 // Allocate new frame
1007 int new_w = h, new_h = w;
1008 VFrame new_frame(new_w, new_h, color_model);
1009 unsigned char **new_rows = new_frame.get_rows();
1011 for(int in_y = 0, out_x = new_w - 1; in_y < h; in_y++, out_x--)
1013 for(int in_x = 0, out_y = 0; in_x < w; in_x++, out_y++)
1015 for(int k = 0; k < bytes_per_pixel; k++)
1017 new_rows[out_y][out_x * bytes_per_pixel + k] =
1018 rows[in_y][in_x * bytes_per_pixel + k];
1025 unsigned char *new_data = new_frame.data;
1026 new_frame.data = data;
1029 new_rows = new_frame.rows;
1030 new_frame.rows = rows;
1033 int new_shmid = new_frame.shmid;
1034 new_frame.shmid = shmid;
1036 // swap bytes_per_line
1037 int new_bpl = new_frame.bytes_per_line;
1038 new_frame.bytes_per_line = bytes_per_line;
1039 bytes_per_line = new_bpl;
1040 new_frame.clear_objects(0);
1046 void VFrame::rotate270()
1048 // Allocate new frame
1049 int new_w = h, new_h = w;
1050 VFrame new_frame(new_w, new_h, color_model);
1051 unsigned char **new_rows = new_frame.get_rows();
1053 for(int in_y = 0, out_x = 0; in_y < h; in_y++, out_x++)
1055 for(int in_x = 0, out_y = new_h - 1; in_x < w; in_x++, out_y--)
1057 for(int k = 0; k < bytes_per_pixel; k++)
1059 new_rows[out_y][out_x * bytes_per_pixel + k] =
1060 rows[in_y][in_x * bytes_per_pixel + k];
1067 unsigned char *new_data = new_frame.data;
1068 new_frame.data = data;
1071 new_rows = new_frame.rows;
1072 new_frame.rows = rows;
1075 int new_shmid = new_frame.shmid;
1076 new_frame.shmid = shmid;
1078 // swap bytes_per_line
1079 int new_bpl = new_frame.bytes_per_line;
1080 new_frame.bytes_per_line = bytes_per_line;
1081 bytes_per_line = new_bpl;
1082 new_frame.clear_objects(0);
1088 void VFrame::flip_vert()
1090 unsigned char temp[bytes_per_line];
1091 for( int i=0, j=h; --j>i; ++i ) {
1092 memcpy(temp, rows[j], bytes_per_line);
1093 memcpy(rows[j], rows[i], bytes_per_line);
1094 memcpy(rows[i], temp, bytes_per_line);
1098 void VFrame::flip_horiz()
1100 unsigned char temp[32];
1101 for(int i = 0; i < h; i++)
1103 unsigned char *row = rows[i];
1104 for(int j = 0; j < bytes_per_line / 2; j += bytes_per_pixel)
1106 memcpy(temp, row + j, bytes_per_pixel);
1107 memcpy(row + j, row + bytes_per_line - j - bytes_per_pixel, bytes_per_pixel);
1108 memcpy(row + bytes_per_line - j - bytes_per_pixel, temp, bytes_per_pixel);
1115 int VFrame::copy_from(VFrame *frame)
1117 if(this->w != frame->get_w() ||
1118 this->h != frame->get_h())
1120 printf("VFrame::copy_from %d sizes differ src %dx%d != dst %dx%d\n",
1129 int w = MIN(this->w, frame->get_w());
1130 int h = MIN(this->h, frame->get_h());
1131 timestamp = frame->timestamp;
1133 switch(frame->color_model)
1136 allocate_compressed_data(frame->compressed_size);
1137 memcpy(data, frame->data, frame->compressed_size);
1138 this->compressed_size = frame->compressed_size;
1142 memcpy(get_y(), frame->get_y(), w * h);
1143 memcpy(get_u(), frame->get_u(), w / 4 * h / 4);
1144 memcpy(get_v(), frame->get_v(), w / 4 * h / 4);
1150 //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());
1151 memcpy(get_y(), frame->get_y(), w * h);
1152 memcpy(get_u(), frame->get_u(), w * h / 4);
1153 memcpy(get_v(), frame->get_v(), w * h / 4);
1157 //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());
1158 memcpy(get_y(), frame->get_y(), w * h);
1159 memcpy(get_u(), frame->get_u(), w * h / 2);
1160 memcpy(get_v(), frame->get_v(), w * h / 2);
1164 //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());
1165 memcpy(get_y(), frame->get_y(), w * h);
1166 memcpy(get_u(), frame->get_u(), w * h);
1167 memcpy(get_v(), frame->get_v(), w * h);
1170 // printf("VFrame::copy_from %d\n", calculate_data_size(w,
1173 // frame->color_model));
1174 // Copy without extra 4 bytes in case the source is a hardware device
1175 memmove(data, frame->data, get_data_size());
1182 int VFrame::transfer_from(VFrame *that, int bg_color, int in_x, int in_y, int in_w, int in_h)
1184 timestamp = that->timestamp;
1187 if( in_x == 0 && in_y == 0 && in_w == that->get_w() && in_h == that->get_h() &&
1188 bg_color == 0 && this->get_color_model() == that->get_color_model() &&
1189 this->get_w() == that->get_w() && this->get_h() == that->get_h() &&
1190 this->get_bytes_per_line() == that->get_bytes_per_line() )
1191 return this->copy_from(that);
1194 BC_CModels::transfer(
1195 this->get_rows(), that->get_rows(), // Packed data out/in
1196 this->get_y(), this->get_u(), this->get_v(), // Planar data out/in
1197 that->get_y(), that->get_u(), that->get_v(),
1198 0, 0, that->get_w(), that->get_h(), // Dimensions in/out
1199 0, 0, this->get_w(), this->get_h(),
1200 that->get_color_model(), this->get_color_model(), // Color models in/out
1201 bg_color, // alpha blend bg_color
1202 that->get_bytes_per_line(),
1203 this->get_bytes_per_line()); // rowspans (of luma for YUV)
1205 unsigned char *in_ptrs[4], *out_ptrs[4];
1206 unsigned char **inp, **outp;
1207 if( BC_CModels::is_planar(that->get_color_model()) ) {
1208 in_ptrs[0] = that->get_y();
1209 in_ptrs[1] = that->get_u();
1210 in_ptrs[2] = that->get_v();
1211 in_ptrs[3] = that->get_a();
1215 inp = that->get_rows();
1216 if( BC_CModels::is_planar(this->get_color_model()) ) {
1217 out_ptrs[0] = this->get_y();
1218 out_ptrs[1] = this->get_u();
1219 out_ptrs[2] = this->get_v();
1220 out_ptrs[3] = this->get_a();
1224 outp = this->get_rows();
1225 BC_CModels::transfer(outp, this->get_color_model(),
1226 0, 0, this->get_w(), this->get_h(),
1227 this->get_bytes_per_line(),
1228 inp, that->get_color_model(),
1229 in_x, in_y, in_w, in_h,
1230 that->get_bytes_per_line(),
1237 int VFrame::get_scale_tables(int *column_table, int *row_table,
1238 int in_x1, int in_y1, int in_x2, int in_y2,
1239 int out_x1, int out_y1, int out_x2, int out_y2)
1242 float w_in = in_x2 - in_x1;
1243 float h_in = in_y2 - in_y1;
1244 int w_out = out_x2 - out_x1;
1245 int h_out = out_y2 - out_y1;
1247 float hscale = w_in / w_out;
1248 float vscale = h_in / h_out;
1250 for(i = 0; i < w_out; i++)
1252 column_table[i] = (int)(hscale * i);
1255 for(i = 0; i < h_out; i++)
1257 row_table[i] = (int)(vscale * i) + in_y1;
1262 void VFrame::push_prev_effect(const char *name)
1265 prev_effects.append(ptr = new char[strlen(name) + 1]);
1267 if(prev_effects.total > MAX_STACK_ELEMENTS) prev_effects.remove_object(0);
1270 void VFrame::pop_prev_effect()
1272 if(prev_effects.total)
1273 prev_effects.remove_object(prev_effects.last());
1276 void VFrame::push_next_effect(const char *name)
1279 next_effects.append(ptr = new char[strlen(name) + 1]);
1281 if(next_effects.total > MAX_STACK_ELEMENTS) next_effects.remove_object(0);
1284 void VFrame::pop_next_effect()
1286 if(next_effects.total)
1287 next_effects.remove_object(next_effects.last());
1290 const char* VFrame::get_next_effect(int number)
1292 if(!next_effects.total) return "";
1294 if(number > next_effects.total - 1) number = next_effects.total - 1;
1296 return next_effects.values[next_effects.total - number - 1];
1299 const char* VFrame::get_prev_effect(int number)
1301 if(!prev_effects.total) return "";
1303 if(number > prev_effects.total - 1) number = prev_effects.total - 1;
1305 return prev_effects.values[prev_effects.total - number - 1];
1308 BC_Hash* VFrame::get_params()
1313 void VFrame::clear_stacks()
1315 next_effects.remove_all_objects();
1316 prev_effects.remove_all_objects();
1321 void VFrame::copy_params(VFrame *src)
1323 status = src->status;
1324 params->copy_from(src->params);
1327 void VFrame::copy_stacks(VFrame *src)
1331 for( int i=0; i < src->next_effects.total; ++i )
1332 next_effects.append(cstrdup(src->next_effects[i]));
1333 for( int i=0; i < src->prev_effects.total; ++i )
1334 prev_effects.append(cstrdup(src->prev_effects[i]));
1339 int VFrame::copy_vframe(VFrame *frame)
1342 return copy_from(frame);
1345 int VFrame::equal_stacks(VFrame *src)
1347 for(int i = 0; i < src->next_effects.total && i < next_effects.total; i++)
1349 if(strcmp(src->next_effects.values[i], next_effects.values[i])) return 0;
1352 for(int i = 0; i < src->prev_effects.total && i < prev_effects.total; i++)
1354 if(strcmp(src->prev_effects.values[i], prev_effects.values[i])) return 0;
1357 if(!params->equivalent(src->params)) return 0;
1361 void VFrame::dump_stacks()
1363 printf("VFrame::dump_stacks\n");
1364 printf(" next_effects:\n");
1365 for(int i = next_effects.total - 1; i >= 0; i--)
1366 printf(" %s\n", next_effects.values[i]);
1367 printf(" prev_effects:\n");
1368 for(int i = prev_effects.total - 1; i >= 0; i--)
1369 printf(" %s\n", prev_effects.values[i]);
1372 void VFrame::dump_params()
1379 printf("VFrame::dump %d this=%p\n", __LINE__, this);
1380 printf(" w=%d h=%d colormodel=%d rows=%p use_shm=%d shmid=%d\n",
1381 w, h, color_model, rows, use_shm, shmid);
1385 int VFrame::get_memory_usage()
1387 if(get_compressed_allocated()) return get_compressed_allocated();
1388 return get_h() * get_bytes_per_line();
1391 // rgb component colors (eg. from colors.h)
1392 // a (~alpha) transparency, 0x00==solid .. 0xff==transparent
1393 void VFrame::set_pixel_color(int rgb, int a)
1395 pixel_rgb = (~a<<24) | (rgb&0xffffff);
1396 int ir = 0xff & (pixel_rgb >> 16);
1397 int ig = 0xff & (pixel_rgb >> 8);
1398 int ib = 0xff & (pixel_rgb >> 0);
1399 YUV::yuv.rgb_to_yuv_8(ir, ig, ib);
1400 pixel_yuv = (~a<<24) | (ir<<16) | (ig<<8) | (ib<<0);
1403 void VFrame::set_stiple(int mask)
1407 void VFrame::set_draw_alpha(float alpha)
1411 void VFrame::set_draw_flags(int flags)
1416 int VFrame::draw_pixel(float x, float y, float a)
1419 if( ix < 0 || iy < 0 || ix >= get_w() || iy >= get_h() ) return 1;
1420 if( a <= 0 ) return 0;
1422 int color = BC_CModels::is_yuv(color_model) ? pixel_yuv : pixel_rgb;
1423 float fr = 0, fg = 0, fb = 0, fa = 0;
1424 int ir = (0xff & (color >> 16));
1425 int ig = (0xff & (color >> 8));
1426 int ib = (0xff & (color >> 0));
1427 int ia = (0xff & ~(color >> 24)); // transparency, not opacity
1428 if( (ix+iy) & stipple ) {
1429 ir = 255 - ir; ig = 255 - ig; ib = 255 - ib;
1431 int rr = (ir<<8) | ir, gg = (ig<<8) | ig, bb = (ib<<8) | ib, aa = (ia<<8) | ia;
1432 float fmax = 65535.f; fa = aa/fmax;
1433 if( BC_CModels::is_float(color_model) ) {
1434 fr = rr/fmax; fg = gg/fmax; fb = bb/fmax;
1437 #define DRAW_PIXEL(cmdl, type, r, g, b, ofs, max, comps) \
1439 float src_a = fa*draw_alpha, src_1a = 1 - src_a; \
1440 type **rows = (type**)get_rows(); \
1441 type *rp = rows[iy], *bp = rp + ix*comps; \
1442 bp[0] = src_a * r + src_1a * bp[0]; \
1444 bp[1] = src_a * (g-ofs) + src_1a * (bp[1]-ofs) + ofs; \
1445 bp[2] = src_a * (b-ofs) + src_1a * (bp[2]-ofs) + ofs; \
1448 bp[3] = src_a * max + src_1a * bp[3]; \
1452 switch(get_color_model()) {
1453 DRAW_PIXEL(BC_A8, uint8_t, ib, 0, 0, 0x00, 0xff, 1);
1454 DRAW_PIXEL(BC_RGB888, uint8_t, ir, ig, ib, 0x00, 0xff, 3);
1455 DRAW_PIXEL(BC_YUV888, uint8_t, ir, ig, ib, 0x80, 0xff, 3);
1456 DRAW_PIXEL(BC_RGBA8888, uint8_t, ir, ig, ib, 0x00, 0xff, 4);
1457 DRAW_PIXEL(BC_YUVA8888, uint8_t, ir, ig, ib, 0x80, 0xff, 4);
1458 DRAW_PIXEL(BC_RGB161616, uint16_t, rr, gg, bb, 0x0000, 0xffff, 3);
1459 DRAW_PIXEL(BC_YUV161616, uint16_t, rr, gg, bb, 0x8000, 0xffff, 3);
1460 DRAW_PIXEL(BC_RGBA16161616, uint16_t, rr, gg, bb, 0x0000, 0xffff, 4);
1461 DRAW_PIXEL(BC_YUVA16161616, uint16_t, rr, gg, bb, 0x8000, 0xffff, 4);
1462 DRAW_PIXEL(BC_RGB_FLOAT, float, fr, fg, fb, 0., 1., 3);
1463 DRAW_PIXEL(BC_RGBA_FLOAT, float, fr, fg, fb, 0., 1., 4);
1468 int VFrame::draw_pixel(float x, float y, float frac, int axis)
1471 int xs = axis, ys = 1-axis;
1472 if( draw_flags & ALIAS_TOP ) draw_pixel(x-xs, y-ys, 1-frac);
1473 draw_pixel(x, y, draw_flags & ALIAS_CTR ? 1-frac : 1);
1474 if( draw_flags & ALIAS_BOT ) draw_pixel(x+xs, y+ys, frac);
1481 void VFrame::draw_line(float x1, float y1, float x2, float y2)
1484 int tx = x1; x1 = x2; x2 = tx;
1485 int ty = y1; y1 = y2; y2 = ty;
1487 float dx = x2-x1, dy = y2-y1;
1488 float s = dx ? dy/dx : 1;
1489 float t = dy ? dx/dy : 0;
1490 int xs = dx < 0 ? -1 : 1;
1492 int idx = (int)x2 - (int)x1;
1493 int idy = (int)y2 - (int)y1;
1494 int d = dx >= dy ? abs(idx) : idy;
1495 float x = x1, y = y1;
1497 draw_pixel(x, y, y-(int)y, 0);
1499 y = y1 + ((x += xs) - x1) * s;
1500 draw_pixel(x, y, y-(int)y, 0);
1504 draw_pixel(x, y, x-(int)x, 1);
1506 x = x1 + (++y - y1) * t;
1507 draw_pixel(x, y, x-(int)x, 1);
1512 // g++ -dD -E - < /dev/null | grep DBL_EPSILON
1513 #ifndef __DBL_EPSILON__
1514 #define __DBL_EPSILON__ ((double)2.22044604925031308085e-16L)
1516 // weakest fraction * graphics integer range
1517 #define RND_EPSILON (__DBL_EPSILON__*65536)
1520 int rnd(double v) { return round(v)+RND_EPSILON; }
1523 int sx, sy, ex, ey; /* current point, end point */
1524 int xs, ys; /* x/y quadrant sign -1/1 */
1525 int64_t A, B, C; /* quadratic coefficients */
1526 int64_t r, dx, dy; /* residual, dr/dx and dr/dy */
1527 int xmxx, xmxy; /* x,y at apex */
1530 void init0(int x1,int y1, int x2,int y2, int x3,int y3, int top);
1531 void init1(int x1,int y1, int x2,int y2, int x3,int y3);
1532 int64_t rx() { return r + xs*8*dx + 4*A; }
1533 void moveX(int64_t r) {
1534 dx += xs*A; dy -= xs*B;
1535 this->r = r; sx += xs;
1537 int64_t ry() { return r + 8*dy + 4*C; }
1538 void moveY(int64_t r) {
1544 smooth_line(VFrame *vframe) { this->vframe = vframe; this->done = 0; }
1548 void smooth_line::draw()
1551 if( abs(dy) >= abs(dx) ) {
1552 if( xs*(sx-xmxx) >= 0 ) {
1553 if( ys > 0 ) { done = 1; return; }
1554 if( dy < 0 || ry() < 0 ) { moveY(ry()); goto xit; }
1555 xmxx = ex; xmxy = ey;
1560 if( abs(rr) < abs(r) )
1565 if( ys > 0 ) { done = 1; return; }
1566 xmxx = ex; xmxy = ey;
1571 if( abs(rr) < abs(r) )
1575 // vframe->draw_pixel(sx, sy);
1576 float vx = abs(dx), vy = abs(dy);
1577 float vv = 4*(vx > vy ? dx : dy);
1578 float frac = vv ? -r / vv : 0;
1579 frac = (1+frac) / 2;
1581 int axis = abs(dx) >= abs(dy) ? 1 : 0;
1582 vframe->draw_pixel(sx, sy, frac, axis);
1585 void VFrame::draw_smooth(int x1, int y1, int x2, int y2, int x3, int y3)
1587 if( (x1 == x2 && y1 == y2) || (x2 == x3 && y2 == y3) )
1588 draw_line(x1,y1, x3,y3);
1589 else if( x1 == x3 && y1 == y3 )
1590 draw_line(x1,y1, x2,y2);
1591 else if( (x2-x1) * (y2-y3) == (x2-x3) * (y2-y1) ) {
1592 // co-linear, draw line from min to max
1594 if( x2 < x1 ) { x1 = x2; y1 = y2; }
1595 if( x2 > x3 ) { x3 = x2; y3 = y2; }
1598 if( x2 > x1 ) { x1 = x2; y1 = y2; }
1599 if( x2 < x3 ) { x3 = x2; y3 = y2; }
1601 draw_line(x1,y1, x3,y3);
1604 smooth_draw(x1, y1, x2, y2, x3, y3);
1608 Non-Parametric Smooth Curve Generation. Don Kelly 1984
1615 Let the starting point be P. the ending point R. and the tangent vertex Q.
1616 A general point Z on the curve is then
1617 Z = (P + R - Q) + (Q - P) sin t + (Q - R) cos t
1619 Expanding the Cartesian coordinates around (P + R - Q) gives
1620 [x y] = Z - (P + R - Q)
1623 x = a*sin(t) + b*cos(t)
1624 y = c*sin(t) + d*cos(t)
1626 from which t can now be eliminated via
1627 c*x - a*y = (c*b - a*d)*cos(t)
1628 d*x - b*y = (a*d - c*b)*sin(t)
1630 giving the Cartesian equation for the ellipse as
1631 f(x, y) = (c*x - a*y)**2 + (d*x - b*y)**2 - (a*d - c*b)**2 = 0
1633 or: f(x, y) = A*x**2 - 2*B*x*y + C*y**2 + B**2 - A*C = 0
1634 where: A = c**2 + d**2, B = a*c + b*d, C = a**2 + b**2
1636 The maximum y extent of the ellipse may now be derived as follows:
1637 let df/dx = 0, 2*A*x = 2*B*y, x = y*B/A
1638 f(x, y) == B**2 * y**2 / A - 2*B**2 * y**2 / A + C*y**2 + B**2 - A*C = 0
1639 (A*C - B**2)*y = (A*C - B**2)*A
1640 max x = sqrt(C), at y = B/sqrt(C)
1641 max y = sqrt(A), at x = B/sqrt(A)
1646 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1647 * draw from P to Q to R if top=0
1648 * or from P to (x,ymax) if top>0
1649 * or from Q to (x,ymax) if top<0
1651 void smooth_line::init0(int x1,int y1, int x2,int y2, int x3,int y3, int top)
1653 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1655 int a = x2-x1, c = y2-y1;
1656 int b = x2-x3, d = y2-y3;
1657 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1659 sx = top >= 0 ? x1 : x3;
1660 sy = top >= 0 ? y1 : y3;
1661 xs = x2 > sx || (x2==sx && (x1+x3-sx)>=x2) ? 1 : -1;
1662 int64_t px = sx-x0, py = sy-y0;
1663 dx = A*px - B*py; dy = C*py - B*px;
1667 double ymy = sqrt(A), ymx = B/ymy;
1675 ys = a*b > 0 && (!top || top*xs*(b*c - a*d) > 0) ? -1 : 1;
1677 double xmx = xs*sqrt(C), xmy = B/xmx;
1678 xmxx = x0 + rnd(xmx);
1679 xmxy = y0 + rnd(xmy);
1682 xmxx = ex; xmxy = ey;
1686 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1687 * draw from (x,ymax) to P
1689 void smooth_line::init1(int x1,int y1, int x2,int y2, int x3,int y3)
1691 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1693 int a = x2-x1, c = y2-y1;
1694 int b = x2-x3, d = y2-y3;
1695 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1697 double ymy = -sqrt(A), ymx = B/ymy;
1698 int64_t px = rnd(ymx), py = rnd(ymy);
1699 sx = x0 + px; ex = x1;
1700 sy = y0 + py; ey = y1;
1701 xs = x2 > x1 || (x2==x1 && x3>=x2) ? 1 : -1;
1702 dx = A*px - B*py; dy = C*py - B*px;
1703 r = 4 * (A*px*px - 2*B*px*py + C*py*py + B*B - A*C);
1705 ys = a*b > 0 && xs*(b*c - a*d) < 0 ? -1 : 1;
1707 double xmx = xs*sqrt(C), xmy = B/xmx;
1708 xmxx = x0 + rnd(xmx);
1709 xmxy = y0 + rnd(xmy);
1713 xmxx = ex; xmxy = ey;
1716 vframe->draw_pixel(sx, sy, 0, 0);
1717 while( xs*(sx-xmxx) < 0 && (xs*dx < 0 || rx() < 0) ) {
1719 vframe->draw_pixel(sx, sy, 0, 0);
1724 void VFrame::smooth_draw(int x1, int y1, int x2, int y2, int x3, int y3)
1726 //printf("p smooth_draw( %d,%d, %d,%d, %d,%d )\n", x1,y1,x2,y2,x3,y3);
1727 if( y1 > y3 ) { // make y3 >= y1
1728 int xt = x1; x1 = x3; x3 = xt;
1729 int yt = y1; y1 = y3; y3 = yt;
1731 if( y1 > y2 && y3 > y2 ) {
1732 smooth_line lt(this), rt(this); // Q on bottom
1733 lt.init1(x1, y1, x2, y2, x3, y3);
1734 rt.init1(x3, y3, x2, y2, x1, y1);
1735 while( !lt.done || !rt.done ) {
1740 else if( y1 < y2 && y3 < y2 ) {
1741 smooth_line lt(this), rt(this); // Q on top
1742 lt.init0(x1, y1, x2, y2, x3, y3, 1);
1743 draw_pixel(lt.sx, lt.sy, 0, 0);
1744 rt.init0(x1, y1, x2, y2, x3, y3, -1);
1745 draw_pixel(rt.sx, rt.sy, 0, 0);
1746 while( !lt.done || !rt.done ) {
1752 smooth_line pt(this); // Q in between
1753 pt.init0(x1, y1, x2, y2, x3, y3, 0);
1754 draw_pixel(pt.sx, pt.sy, 0, 1);
1762 void VFrame::draw_rect(int x1, int y1, int x2, int y2)
1764 draw_line(x1, y1, x2, y1);
1765 draw_line(x2, y1 + 1, x2, y2);
1766 draw_line(x2 - 1, y2, x1, y2);
1767 draw_line(x1, y2 - 1, x1, y1 + 1);
1771 void VFrame::draw_oval(int x1, int y1, int x2, int y2)
1775 int center_x = (x2 + x1) / 2;
1776 int center_y = (y2 + y1) / 2;
1779 //printf("VFrame::draw_oval %d %d %d %d %d\n", __LINE__, x1, y1, x2, y2);
1781 for(int i = 0; i < h / 2; i++) {
1782 // A^2 = -(B^2) + C^2
1783 x_table[i] = (int)(sqrt(-SQR(h / 2 - i) + SQR(h / 2)) * w / h);
1784 //printf("VFrame::draw_oval %d i=%d x=%d\n", __LINE__, i, x_table[i]);
1787 for(int i = 0; i < h / 2 - 1; i++) {
1788 int x3 = x_table[i];
1789 int x4 = x_table[i + 1];
1792 for(int j = x3; j < x4; j++) {
1793 draw_pixel(center_x + j, y1 + i);
1794 draw_pixel(center_x - j, y1 + i);
1795 draw_pixel(center_x + j, y2 - i - 1);
1796 draw_pixel(center_x - j, y2 - i - 1);
1800 draw_pixel(center_x + x3, y1 + i);
1801 draw_pixel(center_x - x3, y1 + i);
1802 draw_pixel(center_x + x3, y2 - i - 1);
1803 draw_pixel(center_x - x3, y2 - i - 1);
1807 draw_pixel(center_x, y1);
1808 draw_pixel(center_x, y2 - 1);
1809 draw_pixel(x1, center_y);
1810 draw_pixel(x2 - 1, center_y);
1811 draw_pixel(x1, center_y - 1);
1812 draw_pixel(x2 - 1, center_y - 1);
1816 void VFrame::draw_arrow(int x1, int y1, int x2, int y2, int sz)
1818 double angle = atan((float)(y2 - y1) / (float)(x2 - x1));
1819 double angle1 = angle + (float)145 / 360 * 2 * M_PI;
1820 double angle2 = angle - (float)145 / 360 * 2 * M_PI;
1821 int s = x2 < x1 ? -1 : 1;
1822 int x3 = x2 + s * (int)(sz * cos(angle1));
1823 int y3 = y2 + s * (int)(sz * sin(angle1));
1824 int x4 = x2 + s * (int)(sz * cos(angle2));
1825 int y4 = y2 + s * (int)(sz * sin(angle2));
1828 draw_line(x1, y1, x2, y2);
1829 // draw_line(x1, y1 + 1, x2, y2 + 1);
1832 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x3, y3);
1834 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x4, y4);
1837 void VFrame::draw_x(int x, int y, int sz)
1839 draw_line(x-sz,y-sz, x+sz,y+sz);
1840 draw_line(x+sz,y-sz, x-sz,y+sz);
1842 void VFrame::draw_t(int x, int y, int sz)
1844 draw_line(x,y-sz, x,y+sz);
1845 draw_line(x+sz,y, x-sz,y);
1850 class jpeg_err : public jpeg_error_mgr
1852 static void s_error_exit(j_common_ptr cp);
1853 static void s_output_message(j_common_ptr cp);
1856 jpeg_std_error((jpeg_error_mgr *)this);
1857 error_exit = s_error_exit;
1858 output_message = s_output_message;
1863 class jpeg_src : public jpeg_source_mgr
1865 static void s_init_source(j_decompress_ptr jp);
1866 static boolean s_fill_input_buffer(j_decompress_ptr jp);
1867 static void s_skip_input_data(j_decompress_ptr jp, long len);
1868 static void s_term_source(j_decompress_ptr jp);
1869 static boolean s_resync_to_restart(j_decompress_ptr jp, int v);
1873 int jpeg_file(int fd);
1874 int jpeg_mem(const unsigned char *bfr, long len);
1877 unsigned char *mbfr;
1879 enum { buffer_sz=0x10000, file_sz=0x100000, };
1880 unsigned char *buffer;
1881 boolean fill_buffer();
1882 void skip_data(long len);
1885 class JpegVFrame : public jpeg_decompress_struct
1890 int read_jpeg(VFrame *vfrm, double xs, double ys, int jpeg_model);
1898 void jpeg_err:: s_error_exit(j_common_ptr cp)
1900 JpegVFrame *jpeg = (JpegVFrame *)cp;
1902 if( !jpeg->debug ) return;
1903 printf("s_error_exit()\n");
1907 s_output_message(j_common_ptr cp)
1909 JpegVFrame *jpeg = (JpegVFrame *)cp;
1910 if( !jpeg->debug ) return;
1911 char msg[JMSG_LENGTH_MAX];
1912 (*cp->err->format_message)(cp, msg);
1913 printf("s_output_message() = %s\n",&msg[0]);
1917 jpeg_src::jpeg_src()
1919 init_source = s_init_source;
1920 fill_input_buffer = s_fill_input_buffer;
1921 skip_input_data = s_skip_input_data;
1922 resync_to_restart = s_resync_to_restart;
1923 term_source = s_term_source;
1931 jpeg_src::~jpeg_src()
1933 if( mbfr ) ::munmap(mbfr, mlen);
1937 int jpeg_src::jpeg_file(int fd)
1941 if( fstat(fd, &st) || !st.st_size ) return 0;
1942 if( st.st_size < file_sz ) {
1943 mbfr = (unsigned char *)::mmap(0, mlen = st.st_size,
1944 PROT_READ, MAP_SHARED, fd, 0);
1945 if( mbfr == MAP_FAILED ) return 0;
1946 next_input_byte = mbfr;
1947 bytes_in_buffer = mlen;
1950 buffer = new unsigned char[buffer_sz];
1951 next_input_byte = &buffer[0];
1952 bytes_in_buffer = 0;
1956 int jpeg_src::jpeg_mem(const unsigned char *bfr, long len)
1958 next_input_byte = bfr;
1959 bytes_in_buffer = len;
1963 void jpeg_src::s_init_source(j_decompress_ptr jp) {}
1964 void jpeg_src::s_term_source(j_decompress_ptr jp) {}
1966 boolean jpeg_src::s_resync_to_restart(j_decompress_ptr jp, int v)
1968 return jpeg_resync_to_restart(jp, v);
1971 boolean jpeg_src::s_fill_input_buffer(j_decompress_ptr jp)
1973 JpegVFrame *jpeg = (JpegVFrame *)jp;
1974 return jpeg->jsrc.fill_buffer();
1977 boolean jpeg_src::fill_buffer()
1979 if( mbfr || fd < 0 ) return 0;
1980 long n = ::read(fd, buffer, buffer_sz);
1981 if( n < 0 ) perror("jpeg read");
1983 next_input_byte = buffer;
1984 bytes_in_buffer = n;
1988 void jpeg_src::s_skip_input_data(j_decompress_ptr jp, long len)
1990 JpegVFrame *jpeg = (JpegVFrame *)jp;
1991 jpeg->jsrc.skip_data(len);
1994 void jpeg_src::skip_data(long len)
1996 while( len > (long) bytes_in_buffer ) {
1997 len -= (long) bytes_in_buffer;
1998 if( !fill_buffer() ) return;
2000 next_input_byte += len;
2001 bytes_in_buffer -= len;
2005 JpegVFrame::JpegVFrame()
2007 jpeg_create_decompress(this);
2009 err = &jerr; src = &jsrc;
2011 JpegVFrame::~JpegVFrame()
2013 jpeg_destroy_decompress(this);
2016 int JpegVFrame::read_jpeg(VFrame *vfrm, double xs, double ys, int jpeg_model)
2018 VFrame *xfrm = vfrm;
2019 int color_model = xfrm->get_color_model();
2020 if( color_model == BC_COMPRESSED ) color_model = jpeg_model;
2021 jpeg_abort((jpeg_common_struct *)this);
2022 if( jpeg_read_header(this, TRUE) != JPEG_HEADER_OK ) return 0;
2023 jpeg_calc_output_dimensions(this);
2024 quantize_colors = FALSE;
2026 jpeg_model == BC_YUV888 ? JCS_YCbCr :
2027 jpeg_model == BC_GREY8 ? JCS_GRAYSCALE : JCS_RGB;
2028 jpeg_calc_output_dimensions(this);
2029 int w = bmax(image_width*xs, 1.);
2030 int h = bmax(image_height*ys, 1.);
2031 vfrm->reallocate(0, -1, 0, 0, 0, w, h, color_model, -1);
2032 if( w != (int)image_width || h != (int)image_height ||
2033 color_model != jpeg_model )
2034 xfrm = new VFrame(image_width, image_height, jpeg_model);
2035 unsigned char *pic = xfrm->get_data();
2036 int linesz = xfrm->get_bytes_per_line();
2037 jpeg_start_decompress(this);
2038 while( !ret && output_scanline < image_height ) {
2039 JSAMPROW rowptr = (JSAMPROW) &pic[output_scanline * linesz];
2040 jpeg_read_scanlines(this, &rowptr, (JDIMENSION) 1);
2042 jpeg_finish_decompress(this);
2043 if( vfrm != xfrm ) {
2044 vfrm->transfer_from(xfrm);
2050 int VFrameJpeg::read_jpeg(const unsigned char *data, long sz,
2051 double xscale, double yscale, int jpeg_model)
2054 jpeg.jsrc.jpeg_mem(data, sz);
2055 return jpeg.read_jpeg(this, xscale, yscale, jpeg_model);
2058 VFrameJpeg::VFrameJpeg(const unsigned char *jpeg_data, double s)
2061 ((long)jpeg_data[0] << 24) | ((long)jpeg_data[1] << 16) |
2062 ((long)jpeg_data[2] << 8) | (long)jpeg_data[3];
2063 if( !s ) s = BC_WindowBase::get_resources()->icon_scale;
2064 read_jpeg(jpeg_data+4, image_size, s, s, BC_RGB888);
2067 VFrameJpeg::VFrameJpeg(const unsigned char *jpeg_data, long image_size, double xs, double ys)
2069 if( !xs ) xs = BC_WindowBase::get_resources()->icon_scale;
2070 if( !ys ) ys = BC_WindowBase::get_resources()->icon_scale;
2071 read_jpeg(jpeg_data, image_size, xs, ys, BC_RGB888);
2074 VFrameJpeg::~VFrameJpeg()
2079 VFrame *VFrameJpeg::vframe_jpeg(int fd, double xs, double ys, int jpeg_model)
2082 jpeg.jsrc.jpeg_file(fd);
2083 VFrame *vfrm = new VFrame();
2084 if( !jpeg.read_jpeg(vfrm, xs, ys, jpeg_model) ) {
2085 delete vfrm; vfrm = 0;
2090 VFrame *VFrameJpeg::vframe_jpeg(const char *jpeg_path, double xs, double ys, int jpeg_model)
2093 int fd = ::open(jpeg_path, O_RDONLY);
2095 vframe = vframe_jpeg(fd, xs, ys, jpeg_model);