tyler
cef7619833
Make the Emscripten build behave like the desktop app for loading, window scaling, and exporting. All changes are #ifdef __EMSCRIPTEN__-gated or no-op on desktop, so native behavior is unchanged. Scaling: - Drop FLAG_WINDOW_HIGHDPI on web. The emscripten-GLFW shim forces a fixed pixel canvas style (!important) when HiDPI-aware, overriding the shell's 100vw/100vh CSS so the canvas can't fill the page; raylib's own resize/window callbacks also disagree about dividing by devicePixelRatio, desyncing the framebuffer from the reported screen size. - Sync raylib's window size to window.innerWidth/innerHeight each frame via SetWindowSize (guarded against no-op churn). This keeps screen size, GL viewport, and projection consistent, so the UI fills the viewport and reflows on resize like the desktop window. Loading: - Compute the full-resolution STFT synchronously when a file loads instead of the desktop overview-then-deferred-high-res path, which relied on many main-loop iterations yielding to the browser and appeared to stall partway. - Allow the wasm heap to grow (INITIAL_MEMORY + ALLOW_MEMORY_GROWTH) so longer recordings fit now that everything is computed up front. Exports: - Add Platform_OfferFileToUser(): no-op on desktop (file is already on disk); on web it reads the just-written file from MEMFS and triggers a browser download, then unlinks the temp copy. Wired into PNG and WAV export, which now show just the filename in the status message. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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* platform_web.c — Emscripten/WebAssembly stub implementation
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*
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* The web version cannot spawn child processes, so these functions
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* return "not supported". A real implementation would use Emscripten's
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* pthreads or asyncify if ffmpeg integration is needed.
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*/
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#include "platform.h"
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <errno.h> /* ENOSYS */
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#include <emscripten.h> /* EM_ASM */
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/* ── Helpers ─────────────────────────────────────────────────────────── */
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static char last_error_msg[256] = { 0 };
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static void set_last_error(const char *fmt, ...) {
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va_list args;
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va_start(args, fmt);
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vsnprintf(last_error_msg, sizeof(last_error_msg), fmt, args);
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va_end(args);
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}
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/* ── Platform API ────────────────────────────────────────────────────── */
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PlatformError Platform_SpawnChild(const char *program, const char **argv,
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PlatformSpawnHandle *out_handle) {
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(void)program;
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(void)argv;
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set_last_error("Spawning child processes is not supported on the web");
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out_handle->last_error = ENOSYS;
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return PLATFORM_NOT_SUPPORTED;
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}
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PlatformError Platform_WaitForChild(PlatformSpawnHandle *handle) {
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(void)handle;
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return PLATFORM_NOT_SUPPORTED;
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}
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SpawnStatus Platform_GetExitStatus(const PlatformSpawnHandle *handle, int *code) {
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(void)handle;
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(void)code;
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return SPAWN_WAITING;
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}
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void Platform_CloseSpawnHandle(PlatformSpawnHandle *handle) {
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if (!handle) return;
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handle->handle = NULL;
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handle->status = SPAWN_WAITING;
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handle->exit_code = 0;
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handle->last_error = 0;
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}
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const char *Platform_GetLastErrorMessage(void) {
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return last_error_msg;
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}
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const char *Platform_GetTempDir(void) {
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/*
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* Emscripten's virtual filesystem: "/" works as root.
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* For persistent downloads/uploads, consider IDBFS mount.
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*/
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return "/";
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}
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void Platform_OfferFileToUser(const char *path) {
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if (!path) return;
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/*
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* The file was just written into the in-memory (MEMFS) filesystem, which
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* the user can't see. Read it back and hand it to the browser as a
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* download, then unlink the temporary copy so we don't leak heap memory.
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*/
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EM_ASM({
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var p = UTF8ToString($0);
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try {
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var data = FS.readFile(p); // Uint8Array
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var name = p.split('/').pop() || 'download';
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var blob = new Blob([data], { type: 'application/octet-stream' });
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var url = URL.createObjectURL(blob);
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var a = document.createElement('a');
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a.href = url;
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a.download = name;
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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setTimeout(function() { URL.revokeObjectURL(url); }, 1000);
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try { FS.unlink(p); } catch (e) {}
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} catch (e) {
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console.error('rspektrum: download failed for ' + p + ': ' + e);
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}
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}, path);
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}
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