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/* main.c — composition root.
*
* Owns: window/audio init, main loop, tab switching + config save,
* drag-drop / web file loading, platform glue.
* Delegates to: player, study, ui, config, layout_editor. */
#define _POSIX_C_SOURCE 200809L
#include "raylib.h"
#include "raygui.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "types.h"
#include "config.h"
#include "layout_editor.h"
#include "player.h"
#include "study.h"
#include "ui.h"
#ifdef PLATFORM_LINUX
#include <unistd.h>
#endif
#ifdef PLATFORM_WEB
#include <emscripten/emscripten.h>
#endif
/* ------------------------------------------------------------------ */
/* Shared state (needed for emscripten main loop callback) */
/* ------------------------------------------------------------------ */
static PlayerState state = { 0 };
static UIState ui;
static UILayout layout;
static char exeDir[512];
static int activeTab = 0;
static int prevTab = 0;
/* --- Screenshot mode (env: STUDY_PLAYER_SCREENSHOT=filename) --- */
static const char *screenshotFile = NULL;
static int screenshotFrameCount = 0;
#define SCREENSHOT_DELAY_FRAMES 60 /* ~1 second at 60fps for window to fully map */
/* ------------------------------------------------------------------ */
/* File loading (drag-drop desktop / JS callback web) */
/* ------------------------------------------------------------------ */
static void load_audio_file(const char *path)
{
if (!player_load(&state, path)) return;
/* Detect silence regions (threshold: 0.015, min duration: 0.75s) */
study_detect_silence(path, &state, 0.015f, 0.75f);
char titleBuf[320];
snprintf(titleBuf, sizeof(titleBuf), "Study Player - %s", state.filename);
SetWindowTitle(titleBuf);
}
#ifdef PLATFORM_WEB
/* Called from JavaScript when a file is uploaded via the file input */
EMSCRIPTEN_KEEPALIVE
void load_file_web(const char *path)
{
load_audio_file(path);
}
#endif
/* ------------------------------------------------------------------ */
/* Main loop body (one frame) */
/* ------------------------------------------------------------------ */
static void update_frame(void)
{
/* --- Drag & drop file loading (desktop only) --- */
#ifndef PLATFORM_WEB
if (IsFileDropped())
{
FilePathList files = LoadDroppedFiles();
if (files.count > 0)
load_audio_file(files.paths[0]);
UnloadDroppedFiles(files);
}
#endif
/* --- Input (player tab only) --- */
if (activeTab == 0)
ui_handle_input(&ui, &state, &layout);
/* --- Music stream update + study auto-pause --- */
if (state.loaded)
{
player_update(&state);
if (state.studyMode && state.playing)
study_auto_pause_check(&state, ui.smartPlayHeld, IsKeyDown(KEY_SPACE));
}
/* --- Save layout on tab switch --- */
if (prevTab == 1 && activeTab == 0)
config_save(exeDir, &layout);
prevTab = activeTab;
/* --- Drawing --- */
BeginDrawing();
ClearBackground(ui.bgColor);
char *tabNames[] = { "Player", "Layout" };
GuiTabBar((Rectangle){ 0, 10, SCREEN_W, 32 }, tabNames, 2, &activeTab);
if (activeTab == 0) {
if (state.loaded)
ui_render_player(&ui, &state, &layout);
else
ui_render_empty(&ui, &layout);
ui_render_overlay(&ui, &state, &layout);
} else {
layout_editor_draw(exeDir, &layout);
}
EndDrawing();
/* --- Screenshot mode: render to FBO, save as PNG, then exit --- */
if (screenshotFile) {
screenshotFrameCount++;
if (screenshotFrameCount >= SCREENSHOT_DELAY_FRAMES) {
RenderTexture2D target = LoadRenderTexture(SCREEN_W, SCREEN_H);
BeginTextureMode(target);
ClearBackground(ui.bgColor);
/* Explicitly fill the entire texture with bg color + alpha 255 */
DrawRectangle(0, 0, SCREEN_W, SCREEN_H, ui.bgColor);
char *tabNames2[] = { "Player", "Layout" };
GuiTabBar((Rectangle){ 0, 10, SCREEN_W, 32 }, tabNames2, 2, &activeTab);
if (state.loaded)
ui_render_player(&ui, &state, &layout);
else
ui_render_empty(&ui, &layout);
ui_render_overlay(&ui, &state, &layout);
EndTextureMode();
/* Read from the render texture — it has proper content */
Image img = LoadImageFromTexture(target.texture);
ImageFlipVertical(&img);
/* ClearBackground doesn't fill FBO alpha on some Mesa drivers.
* Manually replace all transparent (alpha=0) pixels with the
* background color, so the saved PNG has a proper background. */
if (img.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) {
unsigned char *px = (unsigned char *)img.data;
for (int i = 0; i < img.width * img.height * 4; i += 4) {
if (px[i+3] == 0) {
px[i] = ui.bgColor.r;
px[i+1] = ui.bgColor.g;
px[i+2] = ui.bgColor.b;
px[i+3] = 255;
}
}
}
ExportImage(img, screenshotFile);
UnloadImage(img);
UnloadRenderTexture(target);
screenshotFile = NULL;
}
}
}
/* ------------------------------------------------------------------ */
/* Entry point */
/* ------------------------------------------------------------------ */
int main(void)
{
InitWindow(SCREEN_W, SCREEN_H, "Study Player");
InitAudioDevice();
SetTargetFPS(60);
/* --- Screenshot mode (env-controlled, for automated testing) --- */
screenshotFile = getenv("STUDY_PLAYER_SCREENSHOT");
if (screenshotFile)
MaximizeWindow(); /* force window to be mapped/visible */
ui_init(&ui);
memset(&state, 0, sizeof(state));
state.studyMode = true;
state.lastSilenceIdx = -1;
/* Determine executable directory (for config load/save) */
{
char exePath[512] = {0};
#ifdef PLATFORM_LINUX
readlink("/proc/self/exe", exePath, sizeof(exePath) - 1);
#endif
config_load(exePath, &layout);
const char *lastSlash = strrchr(exePath, '/');
if (lastSlash) {
size_t len = (size_t)(lastSlash - exePath);
if (len >= sizeof(exeDir)) len = sizeof(exeDir) - 1;
memcpy(exeDir, exePath, len);
exeDir[len] = '\0';
} else {
exeDir[0] = '.';
exeDir[1] = '\0';
}
layout_editor_init();
}
#ifdef PLATFORM_WEB
emscripten_set_main_loop(update_frame, 0, 1);
#else
while (!WindowShouldClose()) {
update_frame();
if (screenshotFile == NULL && screenshotFrameCount >= SCREENSHOT_DELAY_FRAMES)
break; /* screenshot taken, exit */
}
#endif
player_unload(&state);
ui_destroy(&ui);
CloseAudioDevice();
CloseWindow();
return 0;
}
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