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iter17 α-20 (test): MIN_CAP_POOL 24 -> 11 to match kdirect

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Quick discriminator: if pool depth affects rkvdec's per-codec state
machine, reducing libva's pool to kdirect's ~11 might change Bug 4/5/6
hashes. Reverts to 24 if test shows no change or regression.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
claude-noether
2026-05-14 08:39:14 +00:00
parent 3760a70006
commit 7ae85c54fc
1 changed files with 9 additions and 1 deletions
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src/cap_pool.h
+9 -1
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@@ -67,7 +67,15 @@
#include <linux/videodev2.h> /* for VIDEO_MAX_PLANES */ #include <linux/videodev2.h> /* for VIDEO_MAX_PLANES */
#define MIN_CAP_POOL 24 /*
* iter17 α-20: reduced from 24 to 11 as a test — matches kdirect
* (ffmpeg-v4l2request) CAPTURE pool depth on the same fixture. iter15
* ioctl-sequence diff showed kdirect issues CREATE_BUFS count=1 × 11
* while libva did CREATE_BUFS count=24. If pool depth or buffer-index
* range affects rkvdec's per-codec state machine, this is a discriminator.
* Revert to 24 if 11 is too tight for mpv-16-surface continuous playback.
*/
#define MIN_CAP_POOL 11
enum cap_slot_state { enum cap_slot_state {
CAP_SLOT_FREE = 0, /* available for a new decode acquisition */ CAP_SLOT_FREE = 0, /* available for a new decode acquisition */