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11ecd89030
Pass slot, fence-value and timing descriptors from a producer to an encoder worker through SPSC queues. Retain busy input and recycle textures only after packet release; deliver EOS before GPU output drains. Exercise the handoff with separate native NVENC producer and encoder threads. Frontend capture, worker scheduling and mux/audio integration remain pending.
49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/* Copyright (C) 2026 The RetroArch team. SPDX-License-Identifier: GPL-3.0-or-later */
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#ifndef RECORD_GPU_QUEUE_H
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#define RECORD_GPU_QUEUE_H
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#include <stdint.h>
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#include <boolean.h>
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#include <retro_common_api.h>
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RETRO_BEGIN_DECLS
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#define RECORD_GPU_QUEUE_SLOTS 16
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enum record_gpu_queue_result
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{
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RECORD_GPU_QUEUE_ERROR = -1,
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RECORD_GPU_QUEUE_BUSY,
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RECORD_GPU_QUEUE_OK,
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RECORD_GPU_QUEUE_END
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};
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typedef struct record_gpu_queue record_gpu_queue_t;
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typedef struct record_gpu_frame
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{
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uint64_t timestamp, duration, ready_value;
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unsigned slot;
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bool keyframe;
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} record_gpu_frame_t;
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/* One producer and one worker; no waits or pixel copies. The caller retains
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* the fixed texture pool and ready fence until both sides stop and free
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* succeeds. Construct before handing the queue to either thread. */
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record_gpu_queue_t *record_gpu_queue_new(unsigned slots);
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/* Producer: one reservation at a time. BUSY takes nothing. Submit transfers
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* the slot to the worker; failure retains the reservation. Cancellation
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* keeps it available to this producer. */
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int record_gpu_queue_acquire(record_gpu_queue_t *queue, unsigned *slot);
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bool record_gpu_queue_submit(record_gpu_queue_t *queue,
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const record_gpu_frame_t *frame);
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bool record_gpu_queue_cancel(record_gpu_queue_t *queue);
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/* Producer: refuses an outstanding reservation; otherwise idempotent. */
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bool record_gpu_queue_finish(record_gpu_queue_t *queue);
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/* Worker: END means no more input, including while GPU work is outstanding.
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* A taken descriptor remains the worker's across encoder BUSY. Release only
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* after the GPU and packet no longer reference the slot. */
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int record_gpu_queue_take(record_gpu_queue_t *queue, record_gpu_frame_t *frame);
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bool record_gpu_queue_release(record_gpu_queue_t *queue, unsigned slot);
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/* Both sides quiesced. Refuses reserved, queued or worker-owned slots. */
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bool record_gpu_queue_free(record_gpu_queue_t *queue);
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RETRO_END_DECLS
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#endif
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