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Fix texture caching, file browser segfault, and compiler warnings

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Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>
This commit is contained in:
Tyler
2026-03-27 22:42:22 -07:00
parent 6355db4e03
commit 377ba3616a
1 changed files with 128 additions and 70 deletions
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src/spectrogram.c
+128 -70
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@@ -101,6 +101,12 @@ typedef struct {
float panStartViewStart; float panStartViewStart;
float panStartViewEnd; float panStartViewEnd;
Vector2 panStartPos; Vector2 panStartPos;
// Cached visible texture
Texture2D visibleTexture;
int cachedVisibleStart;
int cachedVisibleEnd;
bool visibleTextureValid;
// Display settings // Display settings
float amplitudeFloorDb; float amplitudeFloorDb;
@@ -578,76 +584,96 @@ static void LoadSelectedFile(void)
app.freqSelectionStart = 0.0f; app.freqSelectionStart = 0.0f;
app.freqSelectionEnd = 1.0f; app.freqSelectionEnd = 1.0f;
app.showFileBrowser = false; app.showFileBrowser = false;
// Invalidate visible texture cache
if (app.visibleTexture.id != 0) UnloadTexture(app.visibleTexture);
app.visibleTexture = (Texture2D){ 0 };
app.visibleTextureValid = false;
TraceLog(LOG_INFO, "Loaded: %s", filePath); TraceLog(LOG_INFO, "Loaded: %s", filePath);
} }
} }
static void DrawFileBrowser(void) static void DrawFileBrowser(void)
{ {
// Draw semi-transparent overlay first
DrawRectangle(0, 0, GetScreenWidth(), GetScreenHeight(), Fade(BLACK, 0.85f)); DrawRectangle(0, 0, GetScreenWidth(), GetScreenHeight(), Fade(BLACK, 0.85f));
float bw = 650, bh = 550; float bw = 650, bh = 550;
float bx = (GetScreenWidth() - bw) / 2, by = (GetScreenHeight() - bh) / 2; float bx = (GetScreenWidth() - bw) / 2, by = (GetScreenHeight() - bh) / 2;
DrawRectangle(bx, by, bw, bh, (Color){ 45, 45, 55, 255 }); DrawRectangle(bx, by, bw, bh, (Color){ 45, 45, 55, 255 });
DrawRectangleLinesEx((Rectangle){ bx, by, bw, bh }, 2, GRAY); DrawRectangleLinesEx((Rectangle){ bx, by, bw, bh }, 2, GRAY);
DrawRectangle(bx, by, bw, 35, (Color){ 60, 60, 75, 255 }); DrawRectangle(bx, by, bw, 35, (Color){ 60, 60, 75, 255 });
DrawText("File Browser - Select WAV File", bx + 15, by + 10, 18, WHITE); DrawText("File Browser - Select WAV File", bx + 15, by + 10, 18, WHITE);
// Path bar // Path bar
DrawRectangle(bx + 15, by + 45, bw - 110, 28, (Color){ 30, 30, 40, 255 }); DrawRectangle(bx + 15, by + 45, bw - 110, 28, (Color){ 30, 30, 40, 255 });
DrawRectangleLinesEx((Rectangle){ bx + 15, by + 45, bw - 110, 28 }, 1, GRAY); DrawRectangleLinesEx((Rectangle){ bx + 15, by + 45, bw - 110, 28 }, 1, GRAY);
char displayPath[300]; char displayPath[300];
strncpy(displayPath, app.browserPath, sizeof(displayPath) - 1); strncpy(displayPath, app.browserPath, sizeof(displayPath) - 1);
displayPath[sizeof(displayPath) - 1] = '\0';
if (strlen(displayPath) > 60) sprintf(displayPath, "...%s", app.browserPath + strlen(app.browserPath) - 57); if (strlen(displayPath) > 60) sprintf(displayPath, "...%s", app.browserPath + strlen(app.browserPath) - 57);
DrawText(displayPath, bx + 20, by + 51, 14, LIGHTGRAY); DrawText(displayPath, bx + 20, by + 51, 14, LIGHTGRAY);
// Up button // Up button
Rectangle upBtn = { bx + bw - 85, by + 45, 70, 28 }; Rectangle upBtn = { bx + bw - 85, by + 45, 70, 28 };
if (CheckCollisionPointRec(GetMousePosition(), upBtn)) DrawRectangleRec(upBtn, (Color){ 80, 80, 90, 255 }); if (CheckCollisionPointRec(GetMousePosition(), upBtn)) DrawRectangleRec(upBtn, (Color){ 80, 80, 90, 255 });
DrawText("UP (..)", upBtn.x + 10, upBtn.y + 7, 14, WHITE); DrawText("UP (..)", upBtn.x + 10, upBtn.y + 7, 14, WHITE);
// File list // File list
float lx = bx + 15, ly = by + 82, lw = bw - 30, lh = bh - 150; float lx = bx + 15, ly = by + 82, lw = bw - 30, lh = bh - 150;
DrawRectangle(lx, ly, lw, lh, (Color){ 25, 25, 35, 255 }); DrawRectangle(lx, ly, lw, lh, (Color){ 25, 25, 35, 255 });
DrawRectangleLinesEx((Rectangle){ lx, ly, lw, lh }, 1, GRAY); DrawRectangleLinesEx((Rectangle){ lx, ly, lw, lh }, 1, GRAY);
// Handle empty directory
int visibleItems = (int)(lh / 26); int visibleItems = (int)(lh / 26);
if (app.browserFileCount > visibleItems) { if (visibleItems < 1) visibleItems = 1;
float sh = (float)visibleItems / app.browserFileCount * lh;
float sy = ly + (float)app.browserScroll / (app.browserFileCount - visibleItems) * (lh - sh); if (app.browserFileCount <= 0 || !app.browserFiles) {
DrawRectangle(lx + lw - 10, sy, 8, sh, GRAY); DrawText("(No WAV files in directory)", lx + 20, ly + lh/2 - 10, 14, GRAY);
} else {
if (app.browserFileCount > visibleItems) {
float sh = (float)visibleItems / app.browserFileCount * lh;
if (sh < 10) sh = 10;
float sy = ly + (float)app.browserScroll / (app.browserFileCount - visibleItems) * (lh - sh);
DrawRectangle(lx + lw - 10, sy, 8, sh, GRAY);
}
int startItem = app.browserScroll;
int endItem = startItem + visibleItems + 1;
if (endItem > app.browserFileCount) endItem = app.browserFileCount;
for (int i = startItem; i < endItem; i++) {
if (i < 0 || i >= app.browserFileCount || !app.browserFiles[i] || !app.browserIsDir) continue;
float iy = ly + (i - startItem) * 26 + 2;
bool hovered = CheckCollisionPointRec((Vector2){ GetMouseX(), GetMouseY() }, (Rectangle){ lx + 2, iy, lw - 14, 24 });
if (i == app.browserSelected) DrawRectangle(lx + 2, iy, lw - 14, 24, (Color){ 50, 70, 120, 180 });
else if (hovered) DrawRectangle(lx + 2, iy, lw - 14, 24, (Color){ 60, 60, 80, 100 });
const char* icon = app.browserIsDir[i] ? "[DIR]" : "[WAV]";
Color iconCol = app.browserIsDir[i] ? (Color){ 255, 220, 80, 255 } : (Color){ 80, 200, 120, 255 };
DrawText(icon, lx + 8, iy + 5, 13, iconCol);
DrawText(app.browserFiles[i], lx + 55, iy + 5, 14, WHITE);
}
} }
int startItem = app.browserScroll; // Scroll with mouse wheel
int endItem = startItem + visibleItems + 1; if (CheckCollisionPointRec(GetMousePosition(), (Rectangle){ lx, ly, lw - 10, lh }) && app.browserFileCount > 0) {
if (endItem > app.browserFileCount) endItem = app.browserFileCount;
for (int i = startItem; i < endItem; i++) {
float iy = ly + (i - startItem) * 26 + 2;
bool hovered = CheckCollisionPointRec((Vector2){ GetMouseX(), GetMouseY() }, (Rectangle){ lx + 2, iy, lw - 14, 24 });
if (i == app.browserSelected) DrawRectangle(lx + 2, iy, lw - 14, 24, (Color){ 50, 70, 120, 180 });
else if (hovered) DrawRectangle(lx + 2, iy, lw - 14, 24, (Color){ 60, 60, 80, 100 });
const char* icon = app.browserIsDir[i] ? "[DIR]" : "[WAV]";
Color iconCol = app.browserIsDir[i] ? (Color){ 255, 220, 80, 255 } : (Color){ 80, 200, 120, 255 };
DrawText(icon, lx + 8, iy + 5, 13, iconCol);
DrawText(app.browserFiles[i], lx + 55, iy + 5, 14, WHITE);
}
if (CheckCollisionPointRec(GetMousePosition(), (Rectangle){ lx, ly, lw - 10, lh })) {
int wheel = GetMouseWheelMove(); int wheel = GetMouseWheelMove();
if (wheel > 0) app.browserScroll--; if (wheel > 0) app.browserScroll--;
if (wheel < 0) app.browserScroll++; if (wheel < 0) app.browserScroll++;
if (app.browserScroll < 0) app.browserScroll = 0; if (app.browserScroll < 0) app.browserScroll = 0;
if (app.browserScroll > app.browserFileCount - visibleItems) app.browserScroll = app.browserFileCount - visibleItems; int maxScroll = app.browserFileCount - visibleItems;
if (maxScroll < 0) maxScroll = 0;
if (app.browserScroll > maxScroll) app.browserScroll = maxScroll;
} }
// Handle clicks
if (CheckCollisionPointRec(GetMousePosition(), upBtn) && IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) NavigateToParentDirectory(); if (CheckCollisionPointRec(GetMousePosition(), upBtn) && IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) NavigateToParentDirectory();
if (CheckCollisionPointRec(GetMousePosition(), (Rectangle){ lx, ly, lw - 10, lh }) && IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) { if (CheckCollisionPointRec(GetMousePosition(), (Rectangle){ lx, ly, lw - 10, lh }) && IsMouseButtonPressed(MOUSE_LEFT_BUTTON) && app.browserFileCount > 0) {
int clicked = app.browserScroll + (int)((GetMouseY() - ly) / 26); int clicked = app.browserScroll + (int)((GetMouseY() - ly) / 26);
if (clicked >= 0 && clicked < app.browserFileCount) { if (clicked >= 0 && clicked < app.browserFileCount) {
app.browserSelected = clicked; app.browserSelected = clicked;
@@ -656,26 +682,26 @@ static void DrawFileBrowser(void)
lastClick = GetTime(); lastClick = GetTime();
} }
} }
// Buttons // Buttons
float btnY = by + bh - 50; float btnY = by + bh - 50;
Rectangle openBtn = { bx + bw - 160, btnY, 140, 38 }; Rectangle openBtn = { bx + bw - 160, btnY, 140, 38 };
Rectangle cancelBtn = { bx + 15, btnY, 110, 38 }; Rectangle cancelBtn = { bx + 15, btnY, 110, 38 };
if (CheckCollisionPointRec(GetMousePosition(), openBtn)) DrawRectangleRec(openBtn, (Color){ 80, 80, 90, 255 }); if (CheckCollisionPointRec(GetMousePosition(), openBtn)) DrawRectangleRec(openBtn, (Color){ 80, 80, 90, 255 });
DrawRectangleLinesEx(openBtn, 1, WHITE); DrawRectangleLinesEx(openBtn, 1, WHITE);
DrawText("OPEN (Enter)", openBtn.x + 25, openBtn.y + 12, 16, WHITE); DrawText("OPEN (Enter)", openBtn.x + 25, openBtn.y + 12, 16, WHITE);
DrawRectangleRec(cancelBtn, (Color){ 100, 40, 40, 255 }); DrawRectangleRec(cancelBtn, (Color){ 100, 40, 40, 255 });
DrawText("ESC Cancel", cancelBtn.x + 18, cancelBtn.y + 12, 16, WHITE); DrawText("ESC Cancel", cancelBtn.x + 18, cancelBtn.y + 12, 16, WHITE);
if (IsKeyPressed(KEY_ENTER) && app.browserSelected >= 0) LoadSelectedFile(); if (IsKeyPressed(KEY_ENTER) && app.browserSelected >= 0 && app.browserFileCount > 0) LoadSelectedFile();
if (IsKeyPressed(KEY_ESCAPE)) app.showFileBrowser = false; if (IsKeyPressed(KEY_ESCAPE)) app.showFileBrowser = false;
if (IsKeyPressed(KEY_UP) && app.browserSelected > 0) { if (IsKeyPressed(KEY_UP) && app.browserSelected > 0 && app.browserFileCount > 0) {
app.browserSelected--; app.browserSelected--;
if (app.browserSelected < app.browserScroll) app.browserScroll = app.browserSelected; if (app.browserSelected < app.browserScroll) app.browserScroll = app.browserSelected;
} }
if (IsKeyPressed(KEY_DOWN) && app.browserSelected < app.browserFileCount - 1) { if (IsKeyPressed(KEY_DOWN) && app.browserSelected < app.browserFileCount - 1 && app.browserFileCount > 0) {
app.browserSelected++; app.browserSelected++;
if (app.browserSelected >= app.browserScroll + visibleItems) app.browserScroll = app.browserSelected - visibleItems + 1; if (app.browserSelected >= app.browserScroll + visibleItems) app.browserScroll = app.browserSelected - visibleItems + 1;
} }
@@ -832,6 +858,10 @@ int main(int argc, char* argv[])
app.amplitudeCeilingDb = 0.0f; app.amplitudeCeilingDb = 0.0f;
app.showFileBrowser = false; app.showFileBrowser = false;
app.isBrowsing = false; app.isBrowsing = false;
app.visibleTexture = (Texture2D){ 0 };
app.cachedVisibleStart = -1;
app.cachedVisibleEnd = -1;
app.visibleTextureValid = false;
GenerateColormapTexture(); GenerateColormapTexture();
ScanDirectory(GetWorkingDirectory()); ScanDirectory(GetWorkingDirectory());
@@ -864,6 +894,10 @@ int main(int argc, char* argv[])
app.loaded = true; app.loaded = true;
app.stftComputed = false; app.stftComputed = false;
app.viewStart = 0.0f; app.viewEnd = 1.0f; app.viewStart = 0.0f; app.viewEnd = 1.0f;
// Invalidate visible texture cache
if (app.visibleTexture.id != 0) UnloadTexture(app.visibleTexture);
app.visibleTexture = (Texture2D){ 0 };
app.visibleTextureValid = false;
} }
} }
} }
@@ -965,30 +999,30 @@ int main(int argc, char* argv[])
} }
// Selection // Selection
Rectangle bounds = { 100, 50, GetScreenWidth() - 150, GetScreenHeight() - 150 }; Rectangle selBounds = { 100, 50, GetScreenWidth() - 150, GetScreenHeight() - 150 };
Vector2 mousePos = GetMousePosition(); Vector2 mousePos = GetMousePosition();
if (app.loaded && !app.showFileBrowser && CheckCollisionPointRec(mousePos, bounds)) { if (app.loaded && !app.showFileBrowser && CheckCollisionPointRec(mousePos, selBounds)) {
bool shiftHeld = IsKeyDown(KEY_LEFT_SHIFT) || IsKeyDown(KEY_RIGHT_SHIFT); bool shiftHeld = IsKeyDown(KEY_LEFT_SHIFT) || IsKeyDown(KEY_RIGHT_SHIFT);
if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON) && !app.isPanning) { if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON) && !app.isPanning) {
if (shiftHeld) { if (shiftHeld) {
app.isFreqSelecting = true; app.isFreqSelecting = true;
float t = 1.0f - (mousePos.y - bounds.y) / bounds.height; float t = 1.0f - (mousePos.y - selBounds.y) / selBounds.height;
app.freqSelectionStart = Clamp(t, 0.0f, 1.0f); app.freqSelectionStart = Clamp(t, 0.0f, 1.0f);
app.freqSelectionEnd = app.freqSelectionStart; app.freqSelectionEnd = app.freqSelectionStart;
} else if (!IsKeyDown(KEY_LEFT_ALT) && !IsKeyDown(KEY_RIGHT_ALT)) { } else if (!IsKeyDown(KEY_LEFT_ALT) && !IsKeyDown(KEY_RIGHT_ALT)) {
app.isTimeSelecting = true; app.isTimeSelecting = true;
app.timeSelectionStart = Clamp((mousePos.x - bounds.x) / bounds.width, 0.0f, 1.0f); app.timeSelectionStart = Clamp((mousePos.x - selBounds.x) / selBounds.width, 0.0f, 1.0f);
app.timeSelectionEnd = app.timeSelectionStart; app.timeSelectionEnd = app.timeSelectionStart;
} }
} }
if (app.isTimeSelecting && IsMouseButtonDown(MOUSE_LEFT_BUTTON)) { if (app.isTimeSelecting && IsMouseButtonDown(MOUSE_LEFT_BUTTON)) {
app.timeSelectionEnd = Clamp((mousePos.x - bounds.x) / bounds.width, 0.0f, 1.0f); app.timeSelectionEnd = Clamp((mousePos.x - selBounds.x) / selBounds.width, 0.0f, 1.0f);
} }
if (app.isFreqSelecting && IsMouseButtonDown(MOUSE_LEFT_BUTTON)) { if (app.isFreqSelecting && IsMouseButtonDown(MOUSE_LEFT_BUTTON)) {
float t = 1.0f - (mousePos.y - bounds.y) / bounds.height; float t = 1.0f - (mousePos.y - selBounds.y) / selBounds.height;
app.freqSelectionEnd = Clamp(t, 0.0f, 1.0f); app.freqSelectionEnd = Clamp(t, 0.0f, 1.0f);
} }
@@ -1025,42 +1059,59 @@ int main(int argc, char* argv[])
// Rendering // Rendering
BeginDrawing(); BeginDrawing();
ClearBackground((Color){ 30, 30, 30, 255 }); ClearBackground((Color){ 30, 30, 30, 255 });
if (app.showFileBrowser) DrawFileBrowser(); Rectangle viewBounds = { 100, 50, GetScreenWidth() - 150, GetScreenHeight() - 150 };
// Draw spectrogram first (background)
if (app.loaded && app.stftComputed) { if (app.loaded && app.stftComputed) {
// Calculate visible region // Calculate visible region
int visibleStart = (int)(app.viewStart * app.spectrogramImage.width); int visibleStart = (int)(app.viewStart * app.spectrogramImage.width);
int visibleEnd = (int)(app.viewEnd * app.spectrogramImage.width); int visibleEnd = (int)(app.viewEnd * app.spectrogramImage.width);
int visibleWidth = visibleEnd - visibleStart; int visibleWidth = visibleEnd - visibleStart;
// Invalidate cache if view changed or texture not valid
bool cacheInvalid = !app.visibleTextureValid ||
visibleStart != app.cachedVisibleStart ||
visibleEnd != app.cachedVisibleEnd ||
visibleWidth <= 0;
if (visibleWidth > 0 && visibleStart >= 0) { if (cacheInvalid && visibleWidth > 0 && visibleStart >= 0) {
// Free old texture if exists
if (app.visibleTexture.id != 0) UnloadTexture(app.visibleTexture);
// Create a sub-image for the visible region // Create a sub-image for the visible region
Image visibleImage = GenImageColor(visibleWidth, app.spectrogramImage.height, BLACK); Image visibleImage = GenImageColor(visibleWidth, app.spectrogramImage.height, BLACK);
Color* srcPixels = (Color*)app.spectrogramImage.data; Color* srcPixels = (Color*)app.spectrogramImage.data;
Color* dstPixels = (Color*)visibleImage.data; Color* dstPixels = (Color*)visibleImage.data;
for (int y = 0; y < app.spectrogramImage.height; y++) { for (int y = 0; y < app.spectrogramImage.height; y++) {
for (int x = 0; x < visibleWidth; x++) { for (int x = 0; x < visibleWidth; x++) {
dstPixels[y * visibleWidth + x] = srcPixels[y * app.spectrogramImage.width + visibleStart + x]; dstPixels[y * visibleWidth + x] = srcPixels[y * app.spectrogramImage.width + visibleStart + x];
} }
} }
Texture2D visibleTexture = LoadTextureFromImage(visibleImage); app.visibleTexture = LoadTextureFromImage(visibleImage);
DrawTexturePro(visibleTexture,
(Rectangle){ 0, 0, visibleWidth, app.spectrogramImage.height },
bounds, (Vector2){ 0, 0 }, 0.0f, WHITE);
UnloadTexture(visibleTexture);
UnloadImage(visibleImage); UnloadImage(visibleImage);
app.cachedVisibleStart = visibleStart;
app.cachedVisibleEnd = visibleEnd;
app.visibleTextureValid = true;
} }
if (app.showGrid) DrawSpectrogramGrid(bounds, 10, 8, Fade(GRAY, 0.3f)); // Draw cached texture
DrawSelection(bounds); if (app.visibleTextureValid && app.visibleTexture.id != 0) {
DrawLabels(bounds); DrawTexturePro(app.visibleTexture,
DrawText("Spectrogram", bounds.x, bounds.y - 30, 20, LIGHTGRAY); (Rectangle){ 0, 0, visibleWidth, app.spectrogramImage.height },
viewBounds, (Vector2){ 0, 0 }, 0.0f, WHITE);
}
if (app.showGrid) DrawSpectrogramGrid(viewBounds, 10, 8, Fade(GRAY, 0.3f));
DrawSelection(viewBounds);
DrawLabels(viewBounds);
DrawText("Spectrogram", viewBounds.x, viewBounds.y - 30, 20, LIGHTGRAY);
DrawText(TextFormat("Frequency (Hz) - Max: %d", app.signal.sampleRate / 2), DrawText(TextFormat("Frequency (Hz) - Max: %d", app.signal.sampleRate / 2),
bounds.x - 50, bounds.y + bounds.height / 2 - 10, 14, Fade(LIGHTGRAY, 0.7f)); viewBounds.x - 50, viewBounds.y + viewBounds.height / 2 - 10, 14, Fade(LIGHTGRAY, 0.7f));
} else if (!app.showFileBrowser) { } else if (!app.showFileBrowser) {
const char* msg1 = "Press 'O' for file browser or drag & drop WAV"; const char* msg1 = "Press 'O' for file browser or drag & drop WAV";
const char* msg2 = "Or use command line: ./rspektrum <file.wav>"; const char* msg2 = "Or use command line: ./rspektrum <file.wav>";
@@ -1069,8 +1120,12 @@ int main(int argc, char* argv[])
DrawText(msg1, GetScreenWidth() / 2 - t1.x / 2, GetScreenHeight() / 2 - t1.y / 2 - 15, 24, LIGHTGRAY); DrawText(msg1, GetScreenWidth() / 2 - t1.x / 2, GetScreenHeight() / 2 - t1.y / 2 - 15, 24, LIGHTGRAY);
DrawText(msg2, GetScreenWidth() / 2 - t2.x / 2, GetScreenHeight() / 2 - t2.y / 2 + 15, 18, GRAY); DrawText(msg2, GetScreenWidth() / 2 - t2.x / 2, GetScreenHeight() / 2 - t2.y / 2 + 15, 18, GRAY);
} }
DrawInfo(bounds); // Draw file browser on top (if active)
if (app.showFileBrowser) DrawFileBrowser();
// Draw UI info and FPS (always on top)
DrawInfo(viewBounds);
DrawFPS(GetScreenWidth() - 100, 10); DrawFPS(GetScreenWidth() - 100, 10);
EndDrawing(); EndDrawing();
} }
@@ -1078,6 +1133,9 @@ int main(int argc, char* argv[])
TraceLog(LOG_INFO, "Shutting down..."); TraceLog(LOG_INFO, "Shutting down...");
if (AudioPlaybackSound.frameCount != 0) UnloadSound(AudioPlaybackSound); if (AudioPlaybackSound.frameCount != 0) UnloadSound(AudioPlaybackSound);
if (app.stftComputed) { FreeSTFT(&app.stft); UnloadImage(app.spectrogramImage); UnloadTexture(app.spectrogramTexture); } if (app.stftComputed) { FreeSTFT(&app.stft); UnloadImage(app.spectrogramImage); UnloadTexture(app.spectrogramTexture); }
if (app.visibleTexture.id != 0) UnloadTexture(app.visibleTexture);
app.visibleTexture = (Texture2D){ 0 };
app.visibleTextureValid = false;
UnloadTexture(colormapTexture); UnloadTexture(colormapTexture);
FreeBrowserFiles(); FreeBrowserFiles();
FreeSignal(&app.signal); FreeSignal(&app.signal);