X-Git-Url: https://git.sesse.net/?p=ccbs;a=blobdiff_plain;f=bigscreen%2Fccbs_bigscreen.cpp;h=b6bf216ac3887f5ab71250faedd1ca3b751d00e8;hp=02ed0335b93d5510fb62f7037f777decca8da30c;hb=efda4ad2ce5903026399e0929cb0e78ec4f23b83;hpb=85b8d8fb245ff3a960d38f92720b1be14edbe52d

diff --git a/bigscreen/ccbs_bigscreen.cpp b/bigscreen/ccbs_bigscreen.cpp
index 02ed033..b6bf216 100644
--- a/bigscreen/ccbs_bigscreen.cpp
+++ b/bigscreen/ccbs_bigscreen.cpp
@@ -1,21 +1,251 @@
 #include <cstdio>
+#include <cstring>
+#include <iconv.h>
 #include <unistd.h>
 #include <pqxx/pqxx>
-#include "glwindow.h"
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include <tinyptc.h>
+
+iconv_t ucs4_iconv;
+
+// UCS-4 string
+class widestring : public std::basic_string<unsigned>
+{
+public:
+	void operator= (const char *from)
+	{
+		unsigned bytes = std::strlen(from);
+		char *from_buf = strdup(from);
+		unsigned *to_buf = new unsigned[bytes + 1];
+
+		char *inptr = from_buf, *outptr = reinterpret_cast<char *> (to_buf);
+
+		size_t in_left = bytes;
+		size_t out_left = bytes * sizeof(unsigned);
+
+		size_t ret = iconv(ucs4_iconv, NULL, NULL, &outptr, &out_left);
+		if (ret == (size_t)(-1)) {
+			throw std::runtime_error("Error in iconv during initialization");
+		}
+
+		ret = iconv(ucs4_iconv, &inptr, &in_left, &outptr, &out_left);
+		if (ret == (size_t)(-1)) {
+			perror("iconv");
+			throw std::runtime_error("Error in iconv during conversion");
+		}
+
+		erase(begin(), end());
+		std::copy(to_buf, reinterpret_cast<unsigned *> (outptr), std::back_inserter(*this));
+
+		free(from_buf);
+		delete[] to_buf;
+	}
+};
+
+template<>
+void std::char_traits<unsigned>::assign(unsigned &to, unsigned const &from)
+{
+	to = from;
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::copy(unsigned *to, unsigned const *from, unsigned n)
+{
+	return static_cast<unsigned *>(memcpy(to, from, n * sizeof(unsigned)));
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::move(unsigned *to, unsigned const *from, unsigned n)
+{
+	return static_cast<unsigned *>(memmove(to, from, n * sizeof(unsigned)));
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::assign(unsigned *to, size_t n, unsigned a)
+{
+	for (unsigned i = 0; i < n; ++i)
+		*to++ = a;
+	return to;
+}
+
+
+template<>
+void pqxx::from_string<widestring>(const char *from, widestring &to)
+{
+	to = from;
+}
+
+int my_draw_text(const widestring &str, unsigned char *buf, int xpos, int ypos, bool real_render, int r, int g, int b, FT_Face face);
+
+class Tournament {
+public:
+	int id;
+	widestring name;
+};
+
+Tournament active_tournament;
+FT_Face font;
+
+/* A trigger that sets a flag whenever it's trigged. */
+class FlagTrigger : pqxx::trigger {
+private:
+	bool flag;
+	
+public:
+	FlagTrigger(pqxx::connection_base &conn, const PGSTD::string &name)
+		: pqxx::trigger(conn, name), flag(false) {}
+	virtual ~FlagTrigger() throw () {}
+	
+	virtual void operator() (int pid)
+	{
+		flag = true;
+		std::fprintf(stderr, "Received a flag trigger from pid %u\n", pid);
+	}
+
+	bool get_flag() const
+	{
+		return flag;
+	}
+
+	void reset_flag()
+	{
+		flag = false;
+	}
+};
+
+/* A transactor that fetches the current tournament and some information about it. */
+class FetchCurrentTournament : public pqxx::transactor<> {
+private:
+	Tournament *tourn;
+
+public:
+	FetchCurrentTournament(Tournament *tourn) : tourn(tourn) {}
+	void operator() (pqxx::transaction<> &t)
+	{
+		pqxx::result res( t.exec("SELECT * FROM bigscreen.active_tournament NATURAL JOIN tournaments") );
+		try {
+			pqxx::result::tuple tournament = res.at(0);
+
+			tourn->id = tournament["tournament"].as(tourn->id);
+			tourn->name = tournament["tournamentname"].as(tourn->name);
+		} catch (PGSTD::out_of_range &e) {
+			tourn->id = -1;
+			tourn->name = "";
+		}
+	}
+};
+
+void init(pqxx::connection &conn)
+{
+	conn.perform(FetchCurrentTournament(&active_tournament));
+
+	if (active_tournament.id == -1) {
+		std::fprintf(stderr, "No active tournament\n");
+	} else {
+		std::fprintf(stderr, "Current tournament is %d (name: '%s')\n",
+			active_tournament.id, active_tournament.name.c_str());
+	}
+}
+
+unsigned char framebuf[800 * 600 * 4];
+
+void main_loop(pqxx::connection &conn)
+{
+	if (active_tournament.id == -1) {
+		// No active tournament, sleep a second or so and exit
+		sleep(1);
+		return;
+	}
+	
+	pqxx::work t(conn, "trx");
+
+	// fetch all songs
+	pqxx::result res( t.exec("SELECT * FROM songs") );
+	unsigned y = 0;
+	for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
+		my_draw_text(i["title"].as(widestring()), framebuf, 0, y, 1, 255, 255, 255, font);
+		y += 20;
+		std::fprintf(stderr, "%s\n", i["title"].c_str());
+	}
+	t.commit();
+
+	ptc_update(framebuf);
+	sleep(1);
+}
+
+void init_freetype()
+{
+	FT_Library library;
+	if (FT_Init_FreeType(&library))
+		throw std::logic_error("FreeType init failed.");
+	if (FT_New_Face(library, "/usr/share/fonts/truetype/msttcorefonts/Georgia.ttf", 0, &font))
+		throw std::logic_error("Face opening failed.");
+	if (FT_Set_Char_Size(font, 0, 12 * 64, 96, 96))
+		throw std::logic_error("Size set failed.");
+}
+
+int my_draw_text(const widestring &str, unsigned char *buf, int xpos, int ypos, bool real_render, int r, int g, int b, FT_Face face)
+{
+	FT_GlyphSlot slot = face->glyph;
+	int x = 0;
+
+	for (widestring::const_iterator i = str.begin(); i != str.end(); ++i) { 
+		int glyph_index = FT_Get_Char_Index(face, *i);
+		if (FT_Load_Glyph(face, glyph_index, FT_LOAD_RENDER))
+			continue;
+
+		if (real_render) {
+			int y;
+			FT_Bitmap *bm = &(slot->bitmap);
+			for (y = 0; y < bm->rows; y++) {
+				int xx;
+				int dsty = ypos - slot->bitmap_top + y;
+				if (dsty < 0 || dsty > 599) continue;
+
+				unsigned char *dst = buf + dsty * 800*4 + (x + xpos + slot->bitmap_left)*4;
+				unsigned char *src = bm->buffer + y * bm->width;
+				for (xx = 0; xx < bm->width; xx++) {
+					*dst = (*dst * (256-*src) + r * *src) >> 8;
+					*dst++;
+					*dst = (*dst * (256-*src) + g * *src) >> 8;
+					*dst++;
+					*dst = (*dst * (256-*src) + b * *src) >> 8;
+					*dst++;
+					*dst++ = 0;
+					src++;
+				}
+			}
+		}
+
+		x += slot->advance.x >> 6;
+	}
+
+	return x;
+}
+
 
 int main(int argc, char **argv)
 {
-	GLWindow glw("CCBS bigscreen", 800, 600, 32, false, 16, -1);
+	ucs4_iconv = iconv_open("ucs-4", "utf-8");
+	
+	ptc_open("CCBS bigscreen", 800, 600);
+	
 	try {
-		pqxx::connection conn("dbname=ccbs host=sql.samfundet.no user=ccbs password=GeT|>>B_");
-		pqxx::transaction<> t(conn, "trx");
-
-		// fetch all songs
-		pqxx::result res( t.exec("SELECT * FROM songs") );
-		for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
-			std::fprintf(stderr, "%s\n", i[0].as(std::string()).c_str());
+		init_freetype();
+		pqxx::connection conn("dbname=ccbs host=altersex.samfundet.no user=ccbs password=GeT|>>B_");
+		FlagTrigger tournament_changed(conn, "active_tournament");
+		
+		// when active_tournament is changed, we destroy everything and start from scratch
+		for ( ;; ) {
+			tournament_changed.reset_flag();
+			init(conn);
+			do {
+				main_loop(conn);
+				conn.get_notifs();
+			} while (!tournament_changed.get_flag());
+			std::fprintf(stderr, "active_tournament changed, resetting...\n");
 		}
-		t.commit();
 	} catch (const std::exception &e) {
 		std::fprintf(stderr, "Exception: %s\n", e.what());
 		exit(1);