8136ab8e76
Using tail calls with functions returning void is forbidden (C99/C11 6.8.6.4: "A return statement with an expression shall not appear in a function whose return type is void.") GCC emits a warning because of this when using -pedantic: "ISO C forbids ‘return’ with expression, in function returning void" Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
132 lines
2.7 KiB
C
132 lines
2.7 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "libavcodec/packet.h"
|
|
|
|
#include "libavutil/common.h"
|
|
#include "libavutil/error.h"
|
|
#include "libavutil/frame.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
#include "objpool.h"
|
|
|
|
struct ObjPool {
|
|
void *pool[32];
|
|
unsigned int pool_count;
|
|
|
|
ObjPoolCBAlloc alloc;
|
|
ObjPoolCBReset reset;
|
|
ObjPoolCBFree free;
|
|
};
|
|
|
|
ObjPool *objpool_alloc(ObjPoolCBAlloc cb_alloc, ObjPoolCBReset cb_reset,
|
|
ObjPoolCBFree cb_free)
|
|
{
|
|
ObjPool *op = av_mallocz(sizeof(*op));
|
|
|
|
if (!op)
|
|
return NULL;
|
|
|
|
op->alloc = cb_alloc;
|
|
op->reset = cb_reset;
|
|
op->free = cb_free;
|
|
|
|
return op;
|
|
}
|
|
|
|
void objpool_free(ObjPool **pop)
|
|
{
|
|
ObjPool *op = *pop;
|
|
|
|
if (!op)
|
|
return;
|
|
|
|
for (unsigned int i = 0; i < op->pool_count; i++)
|
|
op->free(&op->pool[i]);
|
|
|
|
av_freep(pop);
|
|
}
|
|
|
|
int objpool_get(ObjPool *op, void **obj)
|
|
{
|
|
if (op->pool_count) {
|
|
*obj = op->pool[--op->pool_count];
|
|
op->pool[op->pool_count] = NULL;
|
|
} else
|
|
*obj = op->alloc();
|
|
|
|
return *obj ? 0 : AVERROR(ENOMEM);
|
|
}
|
|
|
|
void objpool_release(ObjPool *op, void **obj)
|
|
{
|
|
if (!*obj)
|
|
return;
|
|
|
|
op->reset(*obj);
|
|
|
|
if (op->pool_count < FF_ARRAY_ELEMS(op->pool))
|
|
op->pool[op->pool_count++] = *obj;
|
|
else
|
|
op->free(obj);
|
|
|
|
*obj = NULL;
|
|
}
|
|
|
|
static void *alloc_packet(void)
|
|
{
|
|
return av_packet_alloc();
|
|
}
|
|
static void *alloc_frame(void)
|
|
{
|
|
return av_frame_alloc();
|
|
}
|
|
|
|
static void reset_packet(void *obj)
|
|
{
|
|
av_packet_unref(obj);
|
|
}
|
|
static void reset_frame(void *obj)
|
|
{
|
|
av_frame_unref(obj);
|
|
}
|
|
|
|
static void free_packet(void **obj)
|
|
{
|
|
AVPacket *pkt = *obj;
|
|
av_packet_free(&pkt);
|
|
*obj = NULL;
|
|
}
|
|
static void free_frame(void **obj)
|
|
{
|
|
AVFrame *frame = *obj;
|
|
av_frame_free(&frame);
|
|
*obj = NULL;
|
|
}
|
|
|
|
ObjPool *objpool_alloc_packets(void)
|
|
{
|
|
return objpool_alloc(alloc_packet, reset_packet, free_packet);
|
|
}
|
|
ObjPool *objpool_alloc_frames(void)
|
|
{
|
|
return objpool_alloc(alloc_frame, reset_frame, free_frame);
|
|
}
|