record: capture the displayed frame (chrome + palette)

The video recorder now writes render_capture_frame() instead of the raw
LCD framebuffer, so captures match what's shown: chrome frames record at
their larger dimensions (written into the .gbv header) and the LCD palette
is baked in. Button presses also show up lit in recordings.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/control.c b/src/control.c
index 0ace343..16e769a 100644
--- a/src/control.c
+++ b/src/control.c
@@ -510,7 +510,9 @@ static void dispatch(GB *gb, int fd, const char *orig, char *line) {
                              if (ok && n > 0) every = (u32)n; }
             FILE *f = fopen(argv[2], "wb");
             if (!f) { reply(fd, "err cannot open '%s'", argv[2]); return; }
-            u16 w = SCREEN_W, h = SCREEN_H;
+            // Capture what the user sees: chrome frame + LCD recolor if enabled.
+            int cw, ch; render_capture_size(&cw, &ch);
+            u16 w = (u16)cw, h = (u16)ch;
             // playback interval per captured frame (the GB runs ~59.73 fps)
             u16 ms = (u16)(1000.0 * every / 59.73 + 0.5);
             u8 hdr[10] = { 'G','B','C','V',
@@ -670,7 +672,9 @@ void control_record_frame(GB *gb) {
     if (!rec_fp || !gb->ppu.frame_ready) return;
     gb->ppu.frame_ready = false;   // consume: don't re-capture while paused
     if ((rec_phase++ % rec_every) != 0) return;
-    fwrite(gb->ppu.fb, 1, sizeof(gb->ppu.fb), rec_fp);
+    int w, h;
+    const u8 *frame = render_capture_frame(gb, &w, &h);   // matches the display
+    fwrite(frame, 1, (size_t)w * h * 3, rec_fp);
     rec_written++;
 }