mirror of
https://github.com/FFmpeg/FFmpeg.git
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132 lines
2.7 KiB
C
132 lines
2.7 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "libavcodec/packet.h"
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#include "libavutil/common.h"
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#include "libavutil/error.h"
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#include "libavutil/frame.h"
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#include "libavutil/mem.h"
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#include "objpool.h"
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struct ObjPool {
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void *pool[32];
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unsigned int pool_count;
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ObjPoolCBAlloc alloc;
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ObjPoolCBReset reset;
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ObjPoolCBFree free;
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};
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ObjPool *objpool_alloc(ObjPoolCBAlloc cb_alloc, ObjPoolCBReset cb_reset,
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ObjPoolCBFree cb_free)
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{
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ObjPool *op = av_mallocz(sizeof(*op));
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if (!op)
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return NULL;
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op->alloc = cb_alloc;
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op->reset = cb_reset;
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op->free = cb_free;
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return op;
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}
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void objpool_free(ObjPool **pop)
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{
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ObjPool *op = *pop;
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if (!op)
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return;
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for (unsigned int i = 0; i < op->pool_count; i++)
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op->free(&op->pool[i]);
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av_freep(pop);
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}
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int objpool_get(ObjPool *op, void **obj)
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{
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if (op->pool_count) {
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*obj = op->pool[--op->pool_count];
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op->pool[op->pool_count] = NULL;
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} else
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*obj = op->alloc();
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return *obj ? 0 : AVERROR(ENOMEM);
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}
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void objpool_release(ObjPool *op, void **obj)
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{
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if (!*obj)
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return;
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op->reset(*obj);
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if (op->pool_count < FF_ARRAY_ELEMS(op->pool))
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op->pool[op->pool_count++] = *obj;
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else
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op->free(obj);
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*obj = NULL;
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}
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static void *alloc_packet(void)
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{
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return av_packet_alloc();
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}
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static void *alloc_frame(void)
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{
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return av_frame_alloc();
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}
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static void reset_packet(void *obj)
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{
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return av_packet_unref(obj);
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}
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static void reset_frame(void *obj)
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{
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return av_frame_unref(obj);
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}
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static void free_packet(void **obj)
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{
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AVPacket *pkt = *obj;
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av_packet_free(&pkt);
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*obj = NULL;
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}
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static void free_frame(void **obj)
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{
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AVFrame *frame = *obj;
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av_frame_free(&frame);
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*obj = NULL;
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}
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ObjPool *objpool_alloc_packets(void)
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{
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return objpool_alloc(alloc_packet, reset_packet, free_packet);
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}
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ObjPool *objpool_alloc_frames(void)
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{
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return objpool_alloc(alloc_frame, reset_frame, free_frame);
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}
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