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()
81 //static BCCounter counter;
83 VFramePng::VFramePng(unsigned char *png_data, double s)
86 ((long)png_data[0] << 24) | ((long)png_data[1] << 16) |
87 ((long)png_data[2] << 8) | (long)png_data[3];
88 if( !s ) s = BC_WindowBase::get_resources()->icon_scale;
89 read_png(png_data+4, image_size, s, s);
92 VFramePng::VFramePng(unsigned char *png_data, long image_size, double xs, double ys)
94 if( !xs ) xs = BC_WindowBase::get_resources()->icon_scale;
95 if( !ys ) ys = BC_WindowBase::get_resources()->icon_scale;
96 read_png(png_data, image_size, xs, ys);
99 VFramePng::~VFramePng()
103 VFrame *VFramePng::vframe_png(int fd, double xs, double ys)
106 if( fstat(fd, &st) ) return 0;
107 long len = st.st_size;
110 unsigned char *bfr = (unsigned char *)
111 ::mmap (NULL, len, PROT_READ, MAP_SHARED, fd, 0);
112 if( bfr == MAP_FAILED ) return 0;
113 VFrame *vframe = new VFramePng(bfr, len, xs, ys);
114 if( (w=vframe->get_w()) <= 0 || (h=vframe->get_h()) <= 0 ||
115 vframe->get_data() == 0 ) { delete vframe; vframe = 0; }
119 VFrame *VFramePng::vframe_png(const char *png_path, double xs, double ys)
122 int fd = ::open(png_path, O_RDONLY);
124 vframe = vframe_png(fd, xs, ys);
130 VFrame::VFrame(VFrame &frame)
133 params = new BC_Hash;
134 allocate_data(0, -1, 0, 0, 0, frame.w, frame.h,
135 frame.color_model, frame.bytes_per_line);
139 VFrame::VFrame(int w, int h, int color_model, long bytes_per_line)
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;
279 set_pixel_color(BLACK);
284 // By default, anything is going to be done in RAM
285 opengl_state = VFrame::RAM;
290 prev_effects.set_array_delete();
291 next_effects.set_array_delete();
295 int VFrame::clear_objects(int do_opengl)
308 if( memory_type != VFrame::SHARED )
309 printf("==del %p from %p\n", data, __builtin_return_address(0));
315 case VFrame::PRIVATE:
317 // if(this->w * this->h > 1500 * 1100)
318 // printf("VFrame::clear_objects 2 this=%p data=%p\n", this, data);
321 //printf("VFrame::clear_objects %d this=%p shmid=%p data=%p\n", __LINE__, this, shmid, data);
341 // Delete row pointers
365 int VFrame::get_field2_offset()
367 return field2_offset;
370 int VFrame::set_field2_offset(int value)
372 this->field2_offset = value;
376 void VFrame::set_keyframe(int value)
378 this->is_keyframe = value;
381 int VFrame::get_keyframe()
387 VFrameScene* VFrame::get_scene()
392 int VFrame::calculate_bytes_per_pixel(int color_model)
394 return BC_CModels::calculate_pixelsize(color_model);
397 long VFrame::get_bytes_per_line()
399 return bytes_per_line;
402 long VFrame::get_data_size()
404 return calculate_data_size(w, h, bytes_per_line, color_model) - 4;
407 long VFrame::calculate_data_size(int w, int h, int bytes_per_line, int color_model)
409 return BC_CModels::calculate_datasize(w, h, bytes_per_line, color_model);
412 void VFrame::create_row_pointers()
415 switch(color_model) {
417 if( this->v_offset ) break;
420 this->v_offset = sz + w / 4 * h / 4;
426 if( this->v_offset ) break;
429 this->v_offset = sz + sz / 4;
433 if( this->v_offset ) break;
436 this->v_offset = sz + sz / 2;
439 if( this->v_offset ) break;
442 this->v_offset = sz + sz;
445 if( this->v_offset || a ) break;
446 a = this->data + 3 * sz * sizeof(float);
448 if( this->v_offset ) break;
450 this->u_offset = sz * sizeof(float);
451 this->v_offset = 2 * sz * sizeof(float);
455 rows = new unsigned char*[h];
456 for(int i = 0; i < h; i++)
457 rows[i] = &this->data[i * this->bytes_per_line];
460 y = this->data + this->y_offset;
461 u = this->data + this->u_offset;
462 v = this->data + this->v_offset;
465 int VFrame::allocate_data(unsigned char *data, int shmid,
466 long y_offset, long u_offset, long v_offset, int w, int h,
467 int color_model, long bytes_per_line)
471 this->color_model = color_model;
472 this->bytes_per_pixel = calculate_bytes_per_pixel(color_model);
473 this->y_offset = this->u_offset = this->v_offset = 0;
475 // printf("VFrame::allocate_data %d shmid == 0\n", __LINE__, shmid);
478 this->bytes_per_line = bytes_per_line >= 0 ?
479 bytes_per_line : this->bytes_per_pixel * w;
481 // Allocate data + padding for MMX
483 //printf("VFrame::allocate_data %d %p\n", __LINE__, this->data);
484 memory_type = VFrame::SHARED;
487 this->y_offset = y_offset;
488 this->u_offset = u_offset;
489 this->v_offset = v_offset;
491 else if(shmid >= 0) {
492 memory_type = VFrame::SHMGET;
493 this->data = (unsigned char*)shmat(shmid, NULL, 0);
494 //printf("VFrame::allocate_data %d shmid=%d data=%p\n", __LINE__, shmid, this->data);
496 this->y_offset = y_offset;
497 this->u_offset = u_offset;
498 this->v_offset = v_offset;
501 memory_type = VFrame::PRIVATE;
503 int size = calculate_data_size(this->w, this->h,
504 this->bytes_per_line, this->color_model);
505 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm) {
506 this->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0777);
507 if( this->shmid >= 0 ) {
508 this->data = (unsigned char*)shmat(this->shmid, NULL, 0);
509 //printf("VFrame::allocate_data %d %d %d %p\n", __LINE__, size, this->shmid, this->data);
510 // This causes it to automatically delete when the program exits.
511 shmctl(this->shmid, IPC_RMID, 0);
514 printf("VFrame::allocate_data %d could not allocate"
515 " shared memory, %dx%d (model %d) size=0x%08x\n",
516 __LINE__, w, h, color_model, size);
517 BC_Trace::dump_shm_stats(stdout);
520 // Have to use malloc for libpng
522 this->data = (unsigned char *)malloc(size);
526 // if(this->w * this->h > 1500 * 1100)
527 // printf("VFrame::allocate_data 2 this=%p w=%d h=%d this->data=%p\n",
528 // this, this->w, this->h, this->data);
531 printf("VFrame::allocate_data %dx%d: memory exhausted.\n", this->w, this->h);
533 printf("==new %p from %p sz %d\n", this->data, __builtin_return_address(0), size);
536 //printf("VFrame::allocate_data %d %p data=%p %d %d\n", __LINE__, this, this->data, this->w, this->h);
537 //if(size > 1000000) printf("VFrame::allocate_data %d\n", size);
540 // Create row pointers
541 create_row_pointers();
545 void VFrame::set_memory(unsigned char *data,
555 memory_type = VFrame::SHARED;
558 this->y_offset = y_offset;
559 this->u_offset = u_offset;
560 this->v_offset = v_offset;
565 memory_type = VFrame::SHMGET;
566 this->data = (unsigned char*)shmat(shmid, NULL, 0);
570 y = this->data + this->y_offset;
571 u = this->data + this->u_offset;
572 v = this->data + this->v_offset;
574 create_row_pointers();
577 void VFrame::set_memory(BC_Bitmap *bitmap)
580 unsigned char *data = 0;
581 if( bitmap->is_shared() && !bitmap->is_zombie() )
582 shmid = bitmap->get_shmid();
584 data = bitmap->get_data();
585 set_memory(data, shmid,
586 bitmap->get_y_offset(),
587 bitmap->get_u_offset(),
588 bitmap->get_v_offset());
591 void VFrame::set_compressed_memory(unsigned char *data,
600 memory_type = VFrame::SHARED;
607 memory_type = VFrame::SHMGET;
608 this->data = (unsigned char*)shmat(shmid, NULL, 0);
612 this->compressed_allocated = data_allocated;
613 this->compressed_size = data_size;
617 // Reallocate uncompressed buffer with or without alpha
618 int VFrame::reallocate(
629 // if(shmid == 0) printf("VFrame::reallocate %d shmid=%d\n", __LINE__, shmid);
631 // reset_parameters(0);
644 int VFrame::allocate_compressed_data(long bytes)
646 if(bytes < 1) return 1;
648 // Want to preserve original contents
649 if(data && compressed_allocated < bytes)
652 unsigned char *new_data = 0;
653 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
655 new_shmid = shmget(IPC_PRIVATE,
658 new_data = (unsigned char*)shmat(new_shmid, NULL, 0);
659 shmctl(new_shmid, IPC_RMID, 0);
663 // Have to use malloc for libpng
664 new_data = (unsigned char *)malloc(bytes);
667 bcopy(data, new_data, compressed_allocated);
670 if(memory_type == VFrame::PRIVATE)
680 if(memory_type == VFrame::SHMGET)
688 compressed_allocated = bytes;
693 if(BC_WindowBase::get_resources()->use_vframe_shm() && use_shm)
695 shmid = shmget(IPC_PRIVATE,
698 data = (unsigned char*)shmat(shmid, NULL, 0);
699 shmctl(shmid, IPC_RMID, 0);
703 // Have to use malloc for libpng
704 data = (unsigned char *)malloc(bytes);
707 compressed_allocated = bytes;
714 int VFramePng::read_png(const unsigned char *data, long sz, double xscale, double yscale)
716 // Test for RAW format
717 if(data[0] == 'R' && data[1] == 'A' && data[2] == 'W' && data[3] == ' ') {
718 int new_color_model = BC_RGBA8888;
719 w = data[4] | (data[5] << 8) | (data[6] << 16) | (data[7] << 24);
720 h = data[8] | (data[9] << 8) | (data[10] << 16) | (data[11] << 24);
721 int components = data[12];
722 new_color_model = components == 3 ? BC_RGB888 : BC_RGBA8888;
723 // This shares the data directly
724 // reallocate(data + 20, 0, 0, 0, w, h, new_color_model, -1);
726 // Can't use shared data for theme since button constructions overlay the
728 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
729 memcpy(get_data(), data + 16, w * h * components);
732 else if(data[0] == 0x89 && data[1] == 'P' && data[2] == 'N' && data[3] == 'G') {
734 png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
735 png_infop info_ptr = png_create_info_struct(png_ptr);
739 image = data; image_size = sz;
740 png_set_read_fn(png_ptr, this, PngReadFunction::png_read_function);
741 png_read_info(png_ptr, info_ptr);
743 w = png_get_image_width(png_ptr, info_ptr);
744 h = png_get_image_height(png_ptr, info_ptr);
746 int src_color_model = png_get_color_type(png_ptr, info_ptr);
748 /* tell libpng to strip 16 bit/color files down to 8 bits/color */
749 png_set_strip_16(png_ptr);
751 /* extract multiple pixels with bit depths of 1, 2, and 4 from a single
752 * byte into separate bytes (useful for paletted and grayscale images).
754 png_set_packing(png_ptr);
756 /* expand paletted colors into true RGB triplets */
757 if (src_color_model == PNG_COLOR_TYPE_PALETTE)
758 png_set_expand(png_ptr);
760 /* expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
761 if (src_color_model == PNG_COLOR_TYPE_GRAY && png_get_bit_depth(png_ptr, info_ptr) < 8)
762 png_set_expand(png_ptr);
764 if (src_color_model == PNG_COLOR_TYPE_GRAY ||
765 src_color_model == PNG_COLOR_TYPE_GRAY_ALPHA)
766 png_set_gray_to_rgb(png_ptr);
768 /* expand paletted or RGB images with transparency to full alpha channels
769 * so the data will be available as RGBA quartets */
770 if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)){
772 png_set_expand(png_ptr);
775 switch(src_color_model)
777 case PNG_COLOR_TYPE_GRAY:
778 case PNG_COLOR_TYPE_RGB:
779 new_color_model = BC_RGB888;
782 case PNG_COLOR_TYPE_GRAY_ALPHA:
783 case PNG_COLOR_TYPE_RGB_ALPHA:
785 new_color_model = BC_RGBA8888;
788 case PNG_COLOR_TYPE_PALETTE:
790 new_color_model = BC_RGBA8888;
792 new_color_model = BC_RGB888;
795 reallocate(NULL, -1, 0, 0, 0, w, h, new_color_model, -1);
797 //printf("VFrame::read_png %d %d %d %p\n", __LINE__, w, h, get_rows());
798 png_read_image(png_ptr, get_rows());
799 png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
802 printf("VFrame::read_png %d: unknown file format"
803 " 0x%02x 0x%02x 0x%02x 0x%02x\n",
804 __LINE__, data[4], data[5], data[6], data[7]);
807 int ww = w * xscale, hh = h * yscale;
808 if( ww != w || hh != h ) {
809 VFrame vframe(*this);
810 reallocate(NULL, -1, 0, 0, 0, ww, hh, color_model, -1);
811 transfer_from(&vframe);
816 int VFrame::write_png(const char *path)
818 VFrame *vframe = this;
819 png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
820 png_infop info_ptr = png_create_info_struct(png_ptr);
821 FILE *out_fd = fopen(path, "w");
823 printf("VFrame::write_png %d %s %s\n", __LINE__, path, strerror(errno));
827 int png_cmodel = PNG_COLOR_TYPE_RGB;
828 int bc_cmodel = get_color_model();
829 switch( bc_cmodel ) {
830 case BC_RGB888: break;
831 case BC_RGBA8888: png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA; break;
832 case BC_A8: png_cmodel = PNG_COLOR_TYPE_GRAY; break;
834 bc_cmodel = BC_RGB888;
835 if( BC_CModels::has_alpha(bc_cmodel) ) {
836 bc_cmodel = BC_RGBA8888;
837 png_cmodel = PNG_COLOR_TYPE_RGB_ALPHA;
839 vframe = new VFrame(get_w(), get_h(), bc_cmodel, -1);
840 vframe->transfer_from(this);
843 png_init_io(png_ptr, out_fd);
844 png_set_compression_level(png_ptr, 9);
845 png_set_IHDR(png_ptr, info_ptr, get_w(), get_h(), 8, png_cmodel,
846 PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
847 png_write_info(png_ptr, info_ptr);
848 png_write_image(png_ptr, vframe->get_rows());
849 png_write_end(png_ptr, info_ptr);
850 png_destroy_write_struct(&png_ptr, &info_ptr);
852 if( vframe != this ) delete vframe;
857 #define ZERO_YUV(components, type, max) \
859 for(int i = 0; i < h; i++) \
861 type *row = (type*)get_rows()[i]; \
862 for(int j = 0; j < w; j++) \
864 row[j * components] = 0; \
865 row[j * components + 1] = (max + 1) / 2; \
866 row[j * components + 2] = (max + 1) / 2; \
867 if(components == 4) row[j * components + 3] = 0; \
872 int VFrame::clear_frame()
875 //printf("VFrame::clear_frame %d\n", __LINE__);
876 switch(color_model) {
882 bzero(get_u(), w / 4 * h / 4);
883 bzero(get_v(), w / 4 * h / 4);
890 bzero(get_u(), sz / 4);
891 bzero(get_v(), sz / 4);
896 bzero(get_u(), sz / 2);
897 bzero(get_v(), sz / 2);
900 case BC_RGBA_FLOATP: if( a ) {
901 float *ap = (float *)a;
902 for( int i=sz; --i>=0; ++ap ) *ap = 1.f; }
903 case BC_RGB_FLOATP: {
904 float *rp = (float *)y;
905 for( int i=sz; --i>=0; ++rp ) *rp = 0.f;
906 float *gp = (float *)u;
907 for( int i=sz; --i>=0; ++gp ) *gp = 0.f;
908 float *bp = (float *)v;
909 for( int i=sz; --i>=0; ++bp ) *bp = 0.f;
918 ZERO_YUV(3, unsigned char, 0xff);
922 ZERO_YUV(4, unsigned char, 0xff);
926 ZERO_YUV(3, uint16_t, 0xffff);
929 case BC_YUVA16161616:
930 ZERO_YUV(4, uint16_t, 0xffff);
934 bzero(data, calculate_data_size(w, h, bytes_per_line, color_model));
940 void VFrame::rotate90()
942 // Allocate new frame
943 int new_w = h, new_h = w;
944 VFrame new_frame(new_w, new_h, color_model);
945 unsigned char **new_rows = new_frame.get_rows();
947 for(int in_y = 0, out_x = new_w - 1; in_y < h; in_y++, out_x--)
949 for(int in_x = 0, out_y = 0; in_x < w; in_x++, out_y++)
951 for(int k = 0; k < bytes_per_pixel; k++)
953 new_rows[out_y][out_x * bytes_per_pixel + k] =
954 rows[in_y][in_x * bytes_per_pixel + k];
961 unsigned char *new_data = new_frame.data;
962 new_frame.data = data;
965 new_rows = new_frame.rows;
966 new_frame.rows = rows;
969 int new_shmid = new_frame.shmid;
970 new_frame.shmid = shmid;
972 // swap bytes_per_line
973 int new_bpl = new_frame.bytes_per_line;
974 new_frame.bytes_per_line = bytes_per_line;
975 bytes_per_line = new_bpl;
976 new_frame.clear_objects(0);
982 void VFrame::rotate270()
984 // Allocate new frame
985 int new_w = h, new_h = w;
986 VFrame new_frame(new_w, new_h, color_model);
987 unsigned char **new_rows = new_frame.get_rows();
989 for(int in_y = 0, out_x = 0; in_y < h; in_y++, out_x++)
991 for(int in_x = 0, out_y = new_h - 1; in_x < w; in_x++, out_y--)
993 for(int k = 0; k < bytes_per_pixel; k++)
995 new_rows[out_y][out_x * bytes_per_pixel + k] =
996 rows[in_y][in_x * bytes_per_pixel + k];
1003 unsigned char *new_data = new_frame.data;
1004 new_frame.data = data;
1007 new_rows = new_frame.rows;
1008 new_frame.rows = rows;
1011 int new_shmid = new_frame.shmid;
1012 new_frame.shmid = shmid;
1014 // swap bytes_per_line
1015 int new_bpl = new_frame.bytes_per_line;
1016 new_frame.bytes_per_line = bytes_per_line;
1017 bytes_per_line = new_bpl;
1018 new_frame.clear_objects(0);
1024 void VFrame::flip_vert()
1026 unsigned char *temp = new unsigned char[bytes_per_line];
1027 for(int i = 0, j = h - 1; i < j; i++, j--)
1029 memcpy(temp, rows[j], bytes_per_line);
1030 memcpy(rows[j], rows[i], bytes_per_line);
1031 memcpy(rows[i], temp, bytes_per_line);
1036 void VFrame::flip_horiz()
1038 unsigned char temp[32];
1039 for(int i = 0; i < h; i++)
1041 unsigned char *row = rows[i];
1042 for(int j = 0; j < bytes_per_line / 2; j += bytes_per_pixel)
1044 memcpy(temp, row + j, bytes_per_pixel);
1045 memcpy(row + j, row + bytes_per_line - j - bytes_per_pixel, bytes_per_pixel);
1046 memcpy(row + bytes_per_line - j - bytes_per_pixel, temp, bytes_per_pixel);
1053 int VFrame::copy_from(VFrame *frame)
1055 if(this->w != frame->get_w() ||
1056 this->h != frame->get_h())
1058 printf("VFrame::copy_from %d sizes differ src %dx%d != dst %dx%d\n",
1067 int w = MIN(this->w, frame->get_w());
1068 int h = MIN(this->h, frame->get_h());
1069 timestamp = frame->timestamp;
1071 switch(frame->color_model)
1074 allocate_compressed_data(frame->compressed_size);
1075 memcpy(data, frame->data, frame->compressed_size);
1076 this->compressed_size = frame->compressed_size;
1080 memcpy(get_y(), frame->get_y(), w * h);
1081 memcpy(get_u(), frame->get_u(), w / 4 * h / 4);
1082 memcpy(get_v(), frame->get_v(), w / 4 * h / 4);
1088 //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());
1089 memcpy(get_y(), frame->get_y(), w * h);
1090 memcpy(get_u(), frame->get_u(), w * h / 4);
1091 memcpy(get_v(), frame->get_v(), w * h / 4);
1095 //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());
1096 memcpy(get_y(), frame->get_y(), w * h);
1097 memcpy(get_u(), frame->get_u(), w * h / 2);
1098 memcpy(get_v(), frame->get_v(), w * h / 2);
1102 //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());
1103 memcpy(get_y(), frame->get_y(), w * h);
1104 memcpy(get_u(), frame->get_u(), w * h);
1105 memcpy(get_v(), frame->get_v(), w * h);
1108 // printf("VFrame::copy_from %d\n", calculate_data_size(w,
1111 // frame->color_model));
1112 // Copy without extra 4 bytes in case the source is a hardware device
1113 memmove(data, frame->data, get_data_size());
1117 params->copy_from(frame->params);
1121 int VFrame::transfer_from(VFrame *that, int bg_color, int in_x, int in_y, int in_w, int in_h)
1123 if( this->get_color_model() == that->get_color_model() &&
1124 this->get_w() == that->get_w() && this->get_h() == that->get_h() &&
1125 this->get_bytes_per_line() == that->get_bytes_per_line() )
1126 return this->copy_from(that);
1128 timestamp = that->timestamp;
1130 BC_CModels::transfer(
1131 this->get_rows(), that->get_rows(), // Packed data out/in
1132 this->get_y(), this->get_u(), this->get_v(), // Planar data out/in
1133 that->get_y(), that->get_u(), that->get_v(),
1134 0, 0, that->get_w(), that->get_h(), // Dimensions in/out
1135 0, 0, this->get_w(), this->get_h(),
1136 that->get_color_model(), this->get_color_model(), // Color models in/out
1137 bg_color, // alpha blend bg_color
1138 that->get_bytes_per_line(),
1139 this->get_bytes_per_line()); // rowspans (of luma for YUV)
1141 unsigned char *in_ptrs[4], *out_ptrs[4];
1142 unsigned char **inp, **outp;
1143 if( BC_CModels::is_planar(that->get_color_model()) ) {
1144 in_ptrs[0] = that->get_y();
1145 in_ptrs[1] = that->get_u();
1146 in_ptrs[2] = that->get_v();
1147 in_ptrs[3] = that->get_a();
1151 inp = that->get_rows();
1152 if( BC_CModels::is_planar(this->get_color_model()) ) {
1153 out_ptrs[0] = this->get_y();
1154 out_ptrs[1] = this->get_u();
1155 out_ptrs[2] = this->get_v();
1156 out_ptrs[3] = this->get_a();
1160 outp = this->get_rows();
1161 BC_CModels::transfer(outp, this->get_color_model(),
1162 0, 0, this->get_w(), this->get_h(),
1163 this->get_bytes_per_line(),
1164 inp, that->get_color_model(),
1165 in_x, in_y, in_w, in_h,
1166 that->get_bytes_per_line(),
1169 params->copy_from(that->params);
1174 int VFrame::get_scale_tables(int *column_table, int *row_table,
1175 int in_x1, int in_y1, int in_x2, int in_y2,
1176 int out_x1, int out_y1, int out_x2, int out_y2)
1179 float w_in = in_x2 - in_x1;
1180 float h_in = in_y2 - in_y1;
1181 int w_out = out_x2 - out_x1;
1182 int h_out = out_y2 - out_y1;
1184 float hscale = w_in / w_out;
1185 float vscale = h_in / h_out;
1187 for(i = 0; i < w_out; i++)
1189 column_table[i] = (int)(hscale * i);
1192 for(i = 0; i < h_out; i++)
1194 row_table[i] = (int)(vscale * i) + in_y1;
1199 void VFrame::push_prev_effect(const char *name)
1202 prev_effects.append(ptr = new char[strlen(name) + 1]);
1204 if(prev_effects.total > MAX_STACK_ELEMENTS) prev_effects.remove_object(0);
1207 void VFrame::pop_prev_effect()
1209 if(prev_effects.total)
1210 prev_effects.remove_object(prev_effects.last());
1213 void VFrame::push_next_effect(const char *name)
1216 next_effects.append(ptr = new char[strlen(name) + 1]);
1218 if(next_effects.total > MAX_STACK_ELEMENTS) next_effects.remove_object(0);
1221 void VFrame::pop_next_effect()
1223 if(next_effects.total)
1224 next_effects.remove_object(next_effects.last());
1227 const char* VFrame::get_next_effect(int number)
1229 if(!next_effects.total) return "";
1231 if(number > next_effects.total - 1) number = next_effects.total - 1;
1233 return next_effects.values[next_effects.total - number - 1];
1236 const char* VFrame::get_prev_effect(int number)
1238 if(!prev_effects.total) return "";
1240 if(number > prev_effects.total - 1) number = prev_effects.total - 1;
1242 return prev_effects.values[prev_effects.total - number - 1];
1245 BC_Hash* VFrame::get_params()
1250 void VFrame::clear_stacks()
1252 next_effects.remove_all_objects();
1253 prev_effects.remove_all_objects();
1258 void VFrame::copy_params(VFrame *src)
1260 status = src->status;
1261 params->copy_from(src->params);
1264 void VFrame::copy_stacks(VFrame *src)
1268 for(int i = 0; i < src->next_effects.total; i++)
1271 next_effects.append(ptr = new char[strlen(src->next_effects.values[i]) + 1]);
1272 strcpy(ptr, src->next_effects.values[i]);
1274 for(int i = 0; i < src->prev_effects.total; i++)
1277 prev_effects.append(ptr = new char[strlen(src->prev_effects.values[i]) + 1]);
1278 strcpy(ptr, src->prev_effects.values[i]);
1284 int VFrame::equal_stacks(VFrame *src)
1286 for(int i = 0; i < src->next_effects.total && i < next_effects.total; i++)
1288 if(strcmp(src->next_effects.values[i], next_effects.values[i])) return 0;
1291 for(int i = 0; i < src->prev_effects.total && i < prev_effects.total; i++)
1293 if(strcmp(src->prev_effects.values[i], prev_effects.values[i])) return 0;
1296 if(!params->equivalent(src->params)) return 0;
1300 void VFrame::dump_stacks()
1302 printf("VFrame::dump_stacks\n");
1303 printf(" next_effects:\n");
1304 for(int i = next_effects.total - 1; i >= 0; i--)
1305 printf(" %s\n", next_effects.values[i]);
1306 printf(" prev_effects:\n");
1307 for(int i = prev_effects.total - 1; i >= 0; i--)
1308 printf(" %s\n", prev_effects.values[i]);
1311 void VFrame::dump_params()
1318 printf("VFrame::dump %d this=%p\n", __LINE__, this);
1319 printf(" w=%d h=%d colormodel=%d rows=%p use_shm=%d shmid=%d\n",
1320 w, h, color_model, rows, use_shm, shmid);
1324 int VFrame::get_memory_usage()
1326 if(get_compressed_allocated()) return get_compressed_allocated();
1327 return get_h() * get_bytes_per_line();
1330 void VFrame::set_pixel_color(int rgb)
1333 int ir = 0xff & (pixel_rgb >> 16);
1334 int ig = 0xff & (pixel_rgb >> 8);
1335 int ib = 0xff & (pixel_rgb >> 0);
1336 bc_rgb2yuv(ir,ig,ib, ir,ig,ib);
1337 pixel_yuv = (ir<<16) | (ig<<8) | (ib<<0);
1340 void VFrame::set_stiple(int mask)
1345 int VFrame::draw_pixel(int x, int y)
1347 if( x < 0 || y < 0 || x >= get_w() || y >= get_h() ) return 1;
1348 if( draw_point ) return (this->*draw_point)(x, y);
1350 #define DRAW_PIXEL(type, r, g, b) { \
1351 type **rows = (type**)get_rows(); \
1352 rows[y][x * components + 0] = r; \
1353 rows[y][x * components + 1] = g; \
1354 rows[y][x * components + 2] = b; \
1355 if( components == 4 ) \
1356 rows[y][x * components + 3] = mx; \
1358 int components = BC_CModels::components(color_model);
1359 int bch = BC_CModels::calculate_pixelsize(color_model) / components;
1360 int sz = 8*bch, mx = BC_CModels::is_float(color_model) ? 1 : (1<<sz)-1;
1361 int is_yuv = BC_CModels::is_yuv(color_model);
1362 int pixel_color = is_yuv ? pixel_yuv : pixel_rgb;
1363 int ir = 0xff & (pixel_color >> 16); float fr = 0;
1364 int ig = 0xff & (pixel_color >> 8); float fg = 0;
1365 int ib = 0xff & (pixel_color >> 0); float fb = 0;
1366 if( (x+y) & stipple ) {
1367 ir = 255 - ir; ig = 255 - ig; ib = 255 - ib;
1369 if( BC_CModels::is_float(color_model) ) {
1370 fr = ir / 255.; fg = ig / 255.; fb = ib / 255.;
1373 else if( (sz-=8) > 0 ) {
1374 ir <<= sz; ig <<= sz; ib <<= sz;
1377 switch(get_color_model()) {
1382 DRAW_PIXEL(uint8_t, ir, ig, ib);
1386 case BC_RGBA16161616:
1387 case BC_YUVA16161616:
1388 DRAW_PIXEL(uint16_t, ir, ig, ib);
1392 DRAW_PIXEL(float, fr, fg, fb);
1400 void VFrame::draw_line(int x1, int y1, int x2, int y2)
1403 int tx = x1; x1 = x2; x2 = tx;
1404 int ty = y1; y1 = y2; y2 = ty;
1408 int dx = x2-x1, dy = y2-y1;
1409 int dx2 = 2*dx, dy2 = 2*dy;
1410 if( dx < 0 ) dx = -dx;
1411 int r = dx > dy ? dx : dy, n = r;
1413 if( dx2 < 0 ) dir += 1;
1415 if( dx2 >= 0 ) do { /* +Y, +X */
1417 if( (r -= dx2) < 0 ) { r += dy2; ++x; }
1418 } while( --n >= 0 );
1419 else do { /* +Y, -X */
1421 if( (r += dx2) < 0 ) { r += dy2; --x; }
1422 } while( --n >= 0 );
1425 if( dx2 >= 0 ) do { /* +X, +Y */
1427 if( (r -= dy2) < 0 ) { r += dx2; ++y; }
1428 } while( --n >= 0 );
1429 else do { /* -X, +Y */
1431 if( (r -= dy2) < 0 ) { r -= dx2; ++y; }
1432 } while( --n >= 0 );
1436 // g++ -dD -E - < /dev/null | grep DBL_EPSILON
1437 #ifndef __DBL_EPSILON__
1438 #define __DBL_EPSILON__ ((double)2.22044604925031308085e-16L)
1440 // weakest fraction * graphics integer range
1441 #define RND_EPSILON (__DBL_EPSILON__*65536)
1444 int rnd(double v) { return round(v)+RND_EPSILON; }
1447 int sx, sy, ex, ey; /* current point, end point */
1448 int xs, ys; /* x/y quadrant sign -1/1 */
1449 int64_t A, B, C; /* quadratic coefficients */
1450 int64_t r, dx, dy; /* residual, dr/dx and dr/dy */
1451 int xmxx, xmxy; /* x,y at apex */
1454 void init0(int x1,int y1, int x2,int y2, int x3,int y3, int top);
1455 void init1(int x1,int y1, int x2,int y2, int x3,int y3);
1456 int64_t rx() { return r + xs*8*dx + 4*A; }
1457 void moveX(int64_t r) {
1458 dx += xs*A; dy -= xs*B;
1459 this->r = r; sx += xs;
1461 int64_t ry() { return r + 8*dy + 4*C; }
1462 void moveY(int64_t r) {
1468 smooth_line(VFrame *vframe) { this->vframe = vframe; this->done = 0; }
1472 void smooth_line::draw()
1475 if( abs(dy) >= abs(dx) ) {
1476 if( xs*(sx-xmxx) >= 0 ) {
1477 if( ys > 0 ) { done = 1; return; }
1478 if( dy < 0 || ry() < 0 ) { moveY(ry()); goto xit; }
1479 xmxx = ex; xmxy = ey;
1484 if( abs(rr) < abs(r) )
1489 if( ys > 0 ) { done = 1; return; }
1490 xmxx = ex; xmxy = ey;
1495 if( abs(rr) < abs(r) )
1498 xit: vframe->draw_pixel(sx, sy);
1501 void VFrame::draw_smooth(int x1, int y1, int x2, int y2, int x3, int y3)
1503 if( (x1 == x2 && y1 == y2) || (x2 == x3 && y2 == y3) )
1504 draw_line(x1,y1, x3,y3);
1505 else if( x1 == x3 && y1 == y3 )
1506 draw_line(x1,y1, x2,y2);
1507 else if( (x2-x1) * (y2-y3) == (x2-x3) * (y2-y1) ) {
1508 // co-linear, draw line from min to max
1510 if( x2 < x1 ) { x1 = x2; y1 = y2; }
1511 if( x2 > x3 ) { x3 = x2; y3 = y2; }
1514 if( x2 > x1 ) { x1 = x2; y1 = y2; }
1515 if( x2 < x3 ) { x3 = x2; y3 = y2; }
1517 draw_line(x1,y1, x3,y3);
1520 smooth_draw(x1, y1, x2, y2, x3, y3);
1524 Non-Parametric Smooth Curve Generation. Don Kelly 1984
1531 Let the starting point be P. the ending point R. and the tangent vertex Q.
1532 A general point Z on the curve is then
1533 Z = (P + R - Q) + (Q - P) sin t + (Q - R) cos t
1535 Expanding the Cartesian coordinates around (P + R - Q) gives
1536 [x y] = Z - (P + R - Q)
1539 x = a*sin(t) + b*cos(t)
1540 y = c*sin(t) + d*cos(t)
1542 from which t can now be eliminated via
1543 c*x - a*y = (c*b - a*d)*cos(t)
1544 d*x - b*y = (a*d - c*b)*sin(t)
1546 giving the Cartesian equation for the ellipse as
1547 f(x, y) = (c*x - a*y)**2 + (d*x - b*y)**2 - (a*d - c*b)**2 = 0
1549 or: f(x, y) = A*x**2 - 2*B*x*y + C*y**2 + B**2 - A*C = 0
1550 where: A = c**2 + d**2, B = a*c + b*d, C = a**2 + b**2
1552 The maximum y extent of the ellipse may now be derived as follows:
1553 let df/dx = 0, 2*A*x = 2*B*y, x = y*B/A
1554 f(x, y) == B**2 * y**2 / A - 2*B**2 * y**2 / A + C*y**2 + B**2 - A*C = 0
1555 (A*C - B**2)*y = (A*C - B**2)*A
1556 max x = sqrt(C), at y = B/sqrt(C)
1557 max y = sqrt(A), at x = B/sqrt(A)
1562 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1563 * draw from P to Q to R if top=0
1564 * or from P to (x,ymax) if top>0
1565 * or from Q to (x,ymax) if top<0
1567 void smooth_line::init0(int x1,int y1, int x2,int y2, int x3,int y3, int top)
1569 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1571 int a = x2-x1, c = y2-y1;
1572 int b = x2-x3, d = y2-y3;
1573 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1575 sx = top >= 0 ? x1 : x3;
1576 sy = top >= 0 ? y1 : y3;
1577 xs = x2 > sx || (x2==sx && (x1+x3-sx)>=x2) ? 1 : -1;
1578 int64_t px = sx-x0, py = sy-y0;
1579 dx = A*px - B*py; dy = C*py - B*px;
1583 double ymy = sqrt(A), ymx = B/ymy;
1591 ys = a*b > 0 && (!top || top*xs*(b*c - a*d) > 0) ? -1 : 1;
1593 double xmx = xs*sqrt(C), xmy = B/xmx;
1594 xmxx = x0 + rnd(xmx);
1595 xmxy = y0 + rnd(xmy);
1598 xmxx = ex; xmxy = ey;
1602 /* x1,y1 = P, x2,y2 = Q, x3,y3=R,
1603 * draw from (x,ymax) to P
1605 void smooth_line::init1(int x1,int y1, int x2,int y2, int x3,int y3)
1607 int x0 = x1+x3-x2, y0 = y1+y3-y2; // Q'
1609 int a = x2-x1, c = y2-y1;
1610 int b = x2-x3, d = y2-y3;
1611 A = c*c + d*d; C = a*a + b*b; B = a*c + b*d;
1613 double ymy = -sqrt(A), ymx = B/ymy;
1614 int64_t px = rnd(ymx), py = rnd(ymy);
1615 sx = x0 + px; ex = x1;
1616 sy = y0 + py; ey = y1;
1617 xs = x2 > x1 || (x2==x1 && x3>=x2) ? 1 : -1;
1618 dx = A*px - B*py; dy = C*py - B*px;
1619 r = 4 * (A*px*px - 2*B*px*py + C*py*py + B*B - A*C);
1621 ys = a*b > 0 && xs*(b*c - a*d) < 0 ? -1 : 1;
1623 double xmx = xs*sqrt(C), xmy = B/xmx;
1624 xmxx = x0 + rnd(xmx);
1625 xmxy = y0 + rnd(xmy);
1629 xmxx = ex; xmxy = ey;
1632 vframe->draw_pixel(sx, sy);
1633 while( xs*(sx-xmxx) < 0 && (xs*dx < 0 || rx() < 0) ) {
1635 vframe->draw_pixel(sx, sy);
1640 void VFrame::smooth_draw(int x1, int y1, int x2, int y2, int x3, int y3)
1642 //printf("p smooth_draw( %d,%d, %d,%d, %d,%d )\n", x1,y1,x2,y2,x3,y3);
1643 if( y1 > y3 ) { // make y3 >= y1
1644 int xt = x1; x1 = x3; x3 = xt;
1645 int yt = y1; y1 = y3; y3 = yt;
1647 if( y1 > y2 && y3 > y2 ) {
1648 smooth_line lt(this), rt(this); // Q on bottom
1649 lt.init1(x1, y1, x2, y2, x3, y3);
1650 rt.init1(x3, y3, x2, y2, x1, y1);
1651 while( !lt.done || !rt.done ) {
1656 else if( y1 < y2 && y3 < y2 ) {
1657 smooth_line lt(this), rt(this); // Q on top
1658 lt.init0(x1, y1, x2, y2, x3, y3, 1);
1659 draw_pixel(lt.sx, lt.sy);
1660 rt.init0(x1, y1, x2, y2, x3, y3, -1);
1661 draw_pixel(rt.sx, rt.sy);
1662 while( !lt.done || !rt.done ) {
1668 smooth_line pt(this); // Q in between
1669 pt.init0(x1, y1, x2, y2, x3, y3, 0);
1670 draw_pixel(pt.sx, pt.sy);
1678 void VFrame::draw_rect(int x1, int y1, int x2, int y2)
1680 draw_line(x1, y1, x2, y1);
1681 draw_line(x2, y1 + 1, x2, y2);
1682 draw_line(x2 - 1, y2, x1, y2);
1683 draw_line(x1, y2 - 1, x1, y1 + 1);
1687 void VFrame::draw_oval(int x1, int y1, int x2, int y2)
1691 int center_x = (x2 + x1) / 2;
1692 int center_y = (y2 + y1) / 2;
1695 //printf("VFrame::draw_oval %d %d %d %d %d\n", __LINE__, x1, y1, x2, y2);
1697 for(int i = 0; i < h / 2; i++) {
1698 // A^2 = -(B^2) + C^2
1699 x_table[i] = (int)(sqrt(-SQR(h / 2 - i) + SQR(h / 2)) * w / h);
1700 //printf("VFrame::draw_oval %d i=%d x=%d\n", __LINE__, i, x_table[i]);
1703 for(int i = 0; i < h / 2 - 1; i++) {
1704 int x3 = x_table[i];
1705 int x4 = x_table[i + 1];
1708 for(int j = x3; j < x4; j++) {
1709 draw_pixel(center_x + j, y1 + i);
1710 draw_pixel(center_x - j, y1 + i);
1711 draw_pixel(center_x + j, y2 - i - 1);
1712 draw_pixel(center_x - j, y2 - i - 1);
1716 draw_pixel(center_x + x3, y1 + i);
1717 draw_pixel(center_x - x3, y1 + i);
1718 draw_pixel(center_x + x3, y2 - i - 1);
1719 draw_pixel(center_x - x3, y2 - i - 1);
1723 draw_pixel(center_x, y1);
1724 draw_pixel(center_x, y2 - 1);
1725 draw_pixel(x1, center_y);
1726 draw_pixel(x2 - 1, center_y);
1727 draw_pixel(x1, center_y - 1);
1728 draw_pixel(x2 - 1, center_y - 1);
1732 void VFrame::draw_arrow(int x1, int y1, int x2, int y2, int sz)
1734 double angle = atan((float)(y2 - y1) / (float)(x2 - x1));
1735 double angle1 = angle + (float)145 / 360 * 2 * M_PI;
1736 double angle2 = angle - (float)145 / 360 * 2 * M_PI;
1737 int s = x2 < x1 ? -1 : 1;
1738 int x3 = x2 + s * (int)(sz * cos(angle1));
1739 int y3 = y2 + s * (int)(sz * sin(angle1));
1740 int x4 = x2 + s * (int)(sz * cos(angle2));
1741 int y4 = y2 + s * (int)(sz * sin(angle2));
1744 draw_line(x1, y1, x2, y2);
1745 // draw_line(x1, y1 + 1, x2, y2 + 1);
1748 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x3, y3);
1750 if(abs(y2 - y1) || abs(x2 - x1)) draw_line(x2, y2, x4, y4);
1753 void VFrame::draw_x(int x, int y, int sz)
1755 draw_line(x-sz,y-sz, x+sz,y+sz);
1756 draw_line(x+sz,y-sz, x-sz,y+sz);
1758 void VFrame::draw_t(int x, int y, int sz)
1760 draw_line(x,y-sz, x,y+sz);
1761 draw_line(x+sz,y, x-sz,y);