5 #include "breakpoint.h"
13 Grabber::Grabber(GlDbg &g):
15 decoder(gldecoder_new(this, NULL)),
21 fill(viewport, viewport+4, 0);
23 gldbg.get_command_interpreter().register_command("grab", this, &Grabber::cmd_grab)
24 .set_help("Grab framebuffer contents");
25 gldbg.get_command_interpreter().register_command("autograb", this, &Grabber::cmd_autograb)
26 .set_help("Automatically grab framebuffer contents",
28 " Grab at the end of every frame\n\n"
30 " Grab after every draw call\n\n"
32 " Turn off automatic grabbing\n");
34 decoder->glViewport = glViewport;
35 decoder->glGetIntegerv = glGetIntegerv;
36 decoder->glReadPixels = glReadPixels;
37 decoder->gldBreak = gldBreak;
44 gldecoder_delete(decoder);
47 void Grabber::decode(const char *data, unsigned len)
49 gldecoder_decode(decoder, data, len);
52 void Grabber::process_started()
56 gldbg.set_breakpoint(break_funcs[0], BREAK_CALL, this);
59 for(unsigned i=1; break_funcs[i]; ++i)
60 gldbg.set_breakpoint(break_funcs[i], BREAK_RETURN, this);
68 void Grabber::process_stopped(int reason)
70 if((reason>>8)==3 && pending_grab)
76 gldbg.get_process().resume();
79 gldbg.resume_from_break(this);
84 void Grabber::cmd_grab(const string &)
92 gldbg.get_process().resume();
96 void Grabber::cmd_autograb(const string &args)
101 if(gldbg.get_process().get_state()!=Process::INACTIVE)
103 gldbg.clear_breakpoint(break_funcs[0], BREAK_CALL, this);
104 for(unsigned i=1; break_funcs[i]; ++i)
105 gldbg.clear_breakpoint(break_funcs[i], BREAK_RETURN, this);
108 else if(args=="frame")
111 if(gldbg.get_process().get_state()!=Process::INACTIVE)
112 gldbg.set_breakpoint(break_funcs[0], BREAK_CALL, this);
114 else if(args=="draw")
117 if(gldbg.get_process().get_state()!=Process::INACTIVE)
119 gldbg.set_breakpoint(break_funcs[0], BREAK_CALL, this);
120 for(unsigned i=1; break_funcs[i]; ++i)
121 gldbg.set_breakpoint(break_funcs[i], BREAK_RETURN, this);
125 throw runtime_error("Invalid autograb mode");
130 if(!viewport[2] || !viewport[3])
132 GlPacket *pkt = packet_begin(FUNC_GLDQUERYVIEWPORT);
136 gldbg.get_process().resume();
142 GlPacket *pkt = packet_begin(FUNC_GLDREADPIXELS);
143 for(unsigned i=0; i<4; ++i)
144 packet_write_int(pkt, viewport[i]);
145 packet_write_int(pkt, GL_RGBA);
146 packet_write_int(pkt, GL_UNSIGNED_BYTE);
150 int Grabber::write_png(const string &fn, unsigned width, unsigned height, void *data)
152 FILE *out = fopen(fn.c_str(), "w");
156 png_struct *png = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
163 png_info *info = png_create_info_struct(png);
166 png_destroy_write_struct(&png, 0);
171 if(setjmp(png_jmpbuf(png)))
173 png_destroy_write_struct(&png, &info);
178 png_init_io(png, out);
179 png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
181 vector<png_byte *> row_ptrs(height);
182 for(unsigned i=0; i<height; ++i)
183 row_ptrs[i] = reinterpret_cast<png_byte *>(data)+(height-1-i)*width*4;
184 png_set_rows(png, info, &row_ptrs.front());
186 png_write_png(png, info, PNG_TRANSFORM_IDENTITY, 0);
187 png_write_end(png, info);
189 png_destroy_write_struct(&png, &info);
195 void Grabber::next_frame()
201 void Grabber::glViewport(void *user_data, int x, int y, int width, int height)
203 Grabber *self = reinterpret_cast<Grabber *>(user_data);
204 self->viewport[0] = x;
205 self->viewport[1] = y;
206 self->viewport[2] = width;
207 self->viewport[3] = height;
210 void Grabber::glGetIntegerv(void *user_data, GLenum pname, int *params)
212 Grabber *self = reinterpret_cast<Grabber *>(user_data);
213 if(pname==GL_VIEWPORT)
214 copy(params, params+4, self->viewport);
217 void Grabber::glReadPixels(void *user_data, int, int, int width, int height, GLenum format, GLenum type, void *data)
219 Grabber *self = reinterpret_cast<Grabber *>(user_data);
221 string fn = strformat("grab-%04d-%04d.png", self->frame_num, self->grab_num);
222 if(format==GL_RGBA && type==GL_UNSIGNED_BYTE)
224 if(self->write_png(fn, width, height, data)<0)
225 printf("Failed to write png file %s\n", fn.c_str());
227 printf("Grabbed %dx%d png image to %s\n", width, height, fn.c_str());
233 void Grabber::gldBreak(void *user_data, unsigned short func, unsigned char flag)
235 Grabber *self = reinterpret_cast<Grabber *>(user_data);
239 if(flag==BREAK_CALL && func==break_funcs[0])
240 self->pending_grab = 1;
241 else if(flag==BREAK_RETURN && self->autograb>=2)
243 for(unsigned i=1; (!self->pending_grab && break_funcs[i]); ++i)
244 self->pending_grab = (func==break_funcs[i]);