claude-noether
e0be4e6992
Replace gettimeofday in RequestEndPicture with object_context-scoped counter producing small us values (1, 2, 3, ...) so OUTPUT QBUF timestamp and DPB.reference_ts match ffmpeg-v4l2request's pattern. Phase 5 IMP-1: counter scoped to object_context (not driver_data) to avoid multi-context collisions. Empirical confirmation only — reviewer's CRIT-1 predicts this is inert (VP9/MPEG-2 use same path and PASS). If α-7 produces the same broken hash, the libva wire-byte search space is exhausted and iter10 must pivot to slice-data inspection or kernel investigation. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
87 lines
3.0 KiB
C
87 lines
3.0 KiB
C
/*
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* Copyright (C) 2007 Intel Corporation
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* Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
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* Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _CONTEXT_H_
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#define _CONTEXT_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include <va/va_backend.h>
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#include "object_heap.h"
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#include "h264.h"
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#define CONTEXT(data, id) \
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((struct object_context *)object_heap_lookup(&(data)->context_heap, id))
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#define CONTEXT_ID_OFFSET 0x02000000
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struct object_context {
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struct object_base base;
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VAConfigID config_id;
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VASurfaceID render_surface_id;
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VASurfaceID *surfaces_ids;
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int surfaces_count;
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int picture_width;
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int picture_height;
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int flags;
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/* H264 only */
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struct h264_dpb dpb;
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bool h264_start_code;
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/*
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* iter9 α-7: monotonic per-context timestamp counter (us). Replaces
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* gettimeofday in EndPicture so DPB.reference_ts / OUTPUT QBUF ts
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* are small values matching ffmpeg-v4l2request's pattern. Placed
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* here (object_context) not driver_data per Phase 5 IMP-1 to avoid
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* cross-context collisions.
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*/
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uint64_t timestamp_counter;
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/* fresnel-fourier iter4: VP9 loop-filter delta state, persisted across
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* frames per kernel UAPI <linux/v4l2-controls.h>:2578 ("If this syntax
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* element is not present in the bitstream, users should pass its last
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* value.") and VP9 spec defaults from FFmpeg vp9.c:666-671. Reset on
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* keyframe / error-resilient / intra-only via vp9_lf.initialized=false. */
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struct {
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int8_t ref_deltas[4];
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int8_t mode_deltas[2];
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bool initialized;
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} vp9_lf;
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};
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VAStatus RequestCreateContext(VADriverContextP context, VAConfigID config_id,
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int picture_width, int picture_height, int flags,
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VASurfaceID *surfaces_ids, int surfaces_count,
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VAContextID *context_id);
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VAStatus RequestDestroyContext(VADriverContextP context,
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VAContextID context_id);
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#endif
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