diff options
Diffstat (limited to 'win32')
| -rw-r--r-- | win32/oscilloview.c | 139 | ||||
| -rw-r--r-- | win32/oscilloview.h | 19 |
2 files changed, 158 insertions, 0 deletions
diff --git a/win32/oscilloview.c b/win32/oscilloview.c new file mode 100644 index 0000000..9759cc1 --- /dev/null +++ b/win32/oscilloview.c @@ -0,0 +1,139 @@ +#include "oscilloview.h" +#include <mmsystem.h> +#include <shellapi.h> +#include <windowsx.h> + +enum { + TIMER_UPDATE = 1 +}; + +struct oscilloview oscilloview_g = { + .flag = ATOMIC_FLAG_INIT +}; + +enum { + VIEW_SAMPLES = 1024, + VIEW_SKIP = 2, +}; + +static struct { + HINSTANCE hinst; + HWND parent; + HWND oscilloview; + ATOM oscilloview_class; + struct oscillodata oscillodata[LIBOPNA_OSCILLO_TRACK_COUNT]; + UINT mmtimer; +} g; + +static void on_destroy(HWND hwnd) { + g.oscilloview = 0; + timeKillEvent(g.mmtimer); +} + +static void CALLBACK mmtimer_cb(UINT timerid, UINT msg, + DWORD_PTR userptr, + DWORD_PTR dw1, DWORD_PTR dw2) { + PostMessage(g.oscilloview, WM_USER, 0, 0); +} + +static bool on_create(HWND hwnd, const CREATESTRUCT *cs) { + ShowWindow(hwnd, SW_SHOW); + //SetTimer(hwnd, TIMER_UPDATE, 16, 0); + g.mmtimer = timeSetEvent(16, 16, mmtimer_cb, 0, TIME_PERIODIC); + DragAcceptFiles(hwnd, TRUE); + return true; +} + +static void draw_track(HDC dc, + int x, int y, int w, int h, + const struct oscillodata *data) { + int start = OSCILLO_SAMPLE_COUNT - VIEW_SAMPLES; + start -= (data->offset >> OSCILLO_OFFSET_SHIFT); + if (start < 0) start = 0; + MoveToEx(dc, x, y + h/2.0 - (data->buf[start] / 16384.0) * h/2, 0); + for (int i = 0; i < (VIEW_SAMPLES / VIEW_SKIP); i++) { + LineTo(dc, (double)x + ((i)*w)/(VIEW_SAMPLES / VIEW_SKIP), y + h/2.0 - (data->buf[start + i*VIEW_SKIP] / 16384.0) * h/2); + } +} + +static void on_paint(HWND hwnd) { + RECT cr; + GetClientRect(hwnd, &cr); + PAINTSTRUCT ps; + HDC dc = BeginPaint(hwnd, &ps); + HDC mdc = CreateCompatibleDC(dc); + HBITMAP bitmap = CreateCompatibleBitmap(dc, cr.right, cr.bottom); + SelectObject(mdc, bitmap); + + FillRect(mdc, &cr, GetStockObject(BLACK_BRUSH)); + SelectObject(mdc, GetStockObject(WHITE_PEN)); + int width = cr.right / 3; + int height = cr.bottom / 3; + for (int x = 0; x < 3; x++) { + for (int y = 0; y < 3; y++) { + draw_track(mdc, x*width, y*height, width, height, &g.oscillodata[x*3+y]); + } + } + + BitBlt(dc, 0, 0, cr.right, cr.bottom, mdc, 0, 0, SRCCOPY); + SelectObject(mdc, 0); + DeleteObject(bitmap); + DeleteDC(mdc); + EndPaint(hwnd, &ps); +} + +static LRESULT CALLBACK wndproc( + HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam +) { + switch (msg) { + HANDLE_MSG(hwnd, WM_DESTROY, on_destroy); + HANDLE_MSG(hwnd, WM_CREATE, on_create); + //HANDLE_MSG(hwnd, WM_TIMER, on_timer); + HANDLE_MSG(hwnd, WM_PAINT, on_paint); + case WM_ERASEBKGND: + return 1; + case WM_USER: + if (!atomic_flag_test_and_set_explicit( + &oscilloview_g.flag, memory_order_acquire)) { + memcpy(g.oscillodata, + oscilloview_g.oscillodata, + sizeof(oscilloview_g.oscillodata)); + atomic_flag_clear_explicit(&oscilloview_g.flag, memory_order_release); + } + InvalidateRect(hwnd, 0, FALSE); + return 0; + case WM_DROPFILES: + return SendMessage(g.parent, msg, wParam, lParam); + } + return DefWindowProc(hwnd, msg, wParam, lParam); +} + +void show_oscilloview(HINSTANCE hinst, HWND parent) { + g.hinst = hinst; + g.parent = parent; + if (!g.oscilloview) { + if (!g.oscilloview_class) { + WNDCLASS wc = {0}; + wc.style = 0; + wc.lpfnWndProc = wndproc; + wc.hInstance = g.hinst; + wc.hIcon = LoadIcon(g.hinst, MAKEINTRESOURCE(1)); + wc.hCursor = LoadCursor(NULL, IDC_ARROW); + wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1); + wc.lpszClassName = L"myon_fmplayer_ym2608_oscilloviewer"; + g.oscilloview_class = RegisterClass(&wc); + } + if (!g.oscilloview_class) { + MessageBox(parent, L"Cannot register oscilloviewer class", L"Error", MB_ICONSTOP); + return; + } + g.oscilloview = CreateWindowEx(0, + MAKEINTATOM(g.oscilloview_class), + L"FMPlayer Oscilloview", + WS_CAPTION | WS_SYSMENU | WS_CLIPCHILDREN | WS_SIZEBOX | WS_MAXIMIZEBOX, + CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, + parent, 0, g.hinst, 0); + } else { + SetForegroundWindow(g.oscilloview); + } +} diff --git a/win32/oscilloview.h b/win32/oscilloview.h new file mode 100644 index 0000000..8849830 --- /dev/null +++ b/win32/oscilloview.h @@ -0,0 +1,19 @@ +#ifndef MYON_FMPLAYER_WIN32_OSCILLOVIEW_H_INCLUDED +#define MYON_FMPLAYER_WIN32_OSCILLOVIEW_H_INCLUDED + +#include "libopna/opna.h" +#include "oscillo/oscillo.h" + +#define WIN32_LEAN_AND_MEAN +#include <windows.h> +#include <stdatomic.h> + +extern struct oscilloview { + atomic_flag flag; + struct oscillodata oscillodata[LIBOPNA_OSCILLO_TRACK_COUNT]; +} oscilloview_g; + +void show_oscilloview(HINSTANCE hinst, HWND parent); + +#endif // MYON_FMPLAYER_WIN32_OSCILLOVIEW_H_INCLUDED + |