Revert "Merge pull request 'kernel + daemon: H.264 B-frame display reorder fix (closes #6)' (#7) from noether/kernel-daemon-h264-reorder-fix into main"

This reverts commit 79256dc7ef, reversing
changes made to 7ff2d897ea.

daemon/src/chardev_client.h

@@ -18,44 +18,18 @@
 struct ffmpeg_loader;
 struct daedalus_decoder;
 
-/*
- * Per-inflight (cookie, src_pts) tracking for the H.264 B-frame
- * display-reorder fix (daedalus-v4l2#6).  When the daemon drains a
- * frame from libavcodec, frame->pts (= src_pts of the OUTPUT bitstream
- * that contained the frame's slices) identifies which cookie's CAPTURE
- * buffer the pixels belong in — distinct from the cookie of the REQ
- * that triggered the receive_frame call.  Mapping is small (bounded
- * by the V4L2 client's buffer pool depth, typically ≤24) so a linear
- * array beats a hashtable for cache-locality.
- *
- * cached_req carries the capture geometry (num_planes, plane sizes,
- * strides, pix_fmt) so a later drain — which may target this cookie
- * from a DIFFERENT REQ's drain loop — can call GET_DMABUF + open
- * planes with the original REQ's parameters.
- */
-#define DAEDALUS_MAX_PENDING_COOKIES	64
-
-struct chardev_pending_cookie {
-	int				 used;
-	uint64_t			 src_pts;
-	uint32_t			 cookie;
-	struct daedalus_req_decode	 cached_req;
-};
-
 /**
  * struct chardev_client - daemon-side chardev state
  * @fd:		open /dev/daedalus-v4l2 descriptor (-1 if not open)
  * @loader:	dlopen'd FFmpeg loader (borrowed; not owned)
  * @decoder:	per-codec AVCodecContext cache (owned)
  * @stop_flag:	set non-zero from a signal handler to break the loop
- * @pending:	pts → cookie lookup table for split SRC/DST RESPs
  */
 struct chardev_client {
 	int				 fd;
 	struct ffmpeg_loader		*loader;
 	struct daedalus_decoder		*decoder;
 	volatile sig_atomic_t		*stop_flag;
-	struct chardev_pending_cookie	 pending[DAEDALUS_MAX_PENDING_COOKIES];
 };
 
 /**