Mercurial > sdl-ios-xcode
view test/testcursor.c @ 2661:d38309be5178 gsoc2008_audio_resampling
The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
author | Aaron Wishnick <schnarf@gmail.com> |
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date | Wed, 02 Jul 2008 08:04:50 +0000 |
parents | 3bdb1408f734 |
children | 14d32495a502 |
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#include <stdio.h> #include <stdlib.h> #include "SDL.h" /* This is an example 16x16 cursor top left : black top right : inverted color or black bottom left: white bottom right: transparent (swap left and right for different endianness) */ Uint16 cursor_data[16] = { 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }; Uint16 cursor_mask[16] = { 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00 }; /* another test cursor: smaller than 16x16, and with an odd height */ Uint8 small_cursor_data[11] = { 0x00, 0x18, 0x08, 0x38, 0x44, 0x54, 0x44, 0x38, 0x20, 0x20, 0x00 }; Uint8 small_cursor_mask[11] = { 0x3C, 0x3C, 0x3C, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0x78, 0x70, 0x70 }; /* XPM */ static const char *arrow[] = { /* width height num_colors chars_per_pixel */ " 32 32 3 1", /* colors */ "X c #000000", ". c #ffffff", " c None", /* pixels */ "X ", "XX ", "X.X ", "X..X ", "X...X ", "X....X ", "X.....X ", "X......X ", "X.......X ", "X........X ", "X.....XXXXX ", "X..X..X ", "X.X X..X ", "XX X..X ", "X X..X ", " X..X ", " X..X ", " X..X ", " XX ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", "0,0" }; static SDL_Cursor * create_arrow_cursor() { int i, row, col; Uint8 data[4 * 32]; Uint8 mask[4 * 32]; int hot_x, hot_y; i = -1; for (row = 0; row < 32; ++row) { for (col = 0; col < 32; ++col) { if (col % 8) { data[i] <<= 1; mask[i] <<= 1; } else { ++i; data[i] = mask[i] = 0; } switch (arrow[4 + row][col]) { case 'X': data[i] |= 0x01; mask[i] |= 0x01; break; case '.': mask[i] |= 0x01; break; case ' ': break; } } } sscanf(arrow[4 + row], "%d,%d", &hot_x, &hot_y); return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); } int main(int argc, char *argv[]) { SDL_Surface *screen; SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE; SDL_Cursor *cursor[3]; int current; /* Load the SDL library */ if (SDL_Init(SDL_INIT_VIDEO) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } screen = SDL_SetVideoMode(320, 200, 8, SDL_ANYFORMAT); if (screen == NULL) { fprintf(stderr, "Couldn't initialize video mode: %s\n", SDL_GetError()); return (1); } SDL_FillRect(screen, NULL, 0x664422); cursor[0] = SDL_CreateCursor((Uint8 *) cursor_data, (Uint8 *) cursor_mask, 16, 16, 8, 8); if (cursor[0] == NULL) { fprintf(stderr, "Couldn't initialize test cursor: %s\n", SDL_GetError()); SDL_Quit(); return (1); } cursor[1] = create_arrow_cursor(); if (cursor[1] == NULL) { fprintf(stderr, "Couldn't initialize arrow cursor: %s\n", SDL_GetError()); SDL_FreeCursor(cursor[0]); SDL_Quit(); return (1); } cursor[2] = SDL_CreateCursor(small_cursor_data, small_cursor_mask, 8, 11, 3, 5); if (cursor[2] == NULL) { fprintf(stderr, "Couldn't initialize test cursor: %s\n", SDL_GetError()); SDL_Quit(); return (1); } current = 0; SDL_SetCursor(cursor[current]); while (!quit) { SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_MOUSEBUTTONDOWN: current = (current + 1) % 3; SDL_SetCursor(cursor[current]); break; case SDL_KEYDOWN: if (event.key.keysym.sym == SDLK_ESCAPE) { quit = SDL_TRUE; } break; case SDL_QUIT: quit = SDL_TRUE; break; } } SDL_Flip(screen); SDL_Delay(1); } SDL_FreeCursor(cursor[0]); SDL_FreeCursor(cursor[1]); SDL_FreeCursor(cursor[2]); SDL_Quit(); return (0); }