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aacenc: make threadsafe

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Since the ff_aac_tableinit() can be called by both the encoder and
the decoder (in case of transcoding) this commit shares the AVOnce
variable to prevent this.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2015-11-27 14:52:35 +00:00
parent 8000d484b8
commit 3d62e7a30f
4 changed files with 10 additions and 4 deletions
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4
libavcodec/aacdec_template.c
View File

@ -1103,14 +1103,12 @@ static av_cold void aac_static_table_init(void)
AAC_RENAME(cbrt_tableinit)();
}
static AVOnce aac_init = AV_ONCE_INIT;
static av_cold int aac_decode_init(AVCodecContext *avctx)
{
AACContext *ac = avctx->priv_data;
int ret;
ret = ff_thread_once(&aac_init, &aac_static_table_init);
ret = ff_thread_once(&aac_table_init, &aac_static_table_init);
if (ret != 0)
return AVERROR_UNKNOWN;

4
libavcodec/aacenc.c
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@ -986,7 +986,8 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
if (HAVE_MIPSDSPR1)
ff_aac_coder_init_mips(s);
ff_aac_tableinit();
if ((ret = ff_thread_once(&aac_table_init, &ff_aac_tableinit)) != 0)
return AVERROR_UNKNOWN;
ff_af_queue_init(avctx, &s->afq);
@ -1029,6 +1030,7 @@ AVCodec ff_aac_encoder = {
.encode2 = aac_encode_frame,
.close = aac_encode_end,
.supported_samplerates = mpeg4audio_sample_rates,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY |
AV_CODEC_CAP_EXPERIMENTAL,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,

3
libavcodec/aactab.c
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@ -27,12 +27,15 @@
* @author Maxim Gavrilov ( maxim.gavrilov gmail com )
*/
#include "libavutil/thread.h"
#include "libavutil/mem.h"
#include "aac.h"
#include "aac_tablegen.h"
#include <stdint.h>
AVOnce aac_table_init = AV_ONCE_INIT;
DECLARE_ALIGNED(32, float, ff_aac_kbd_long_1024)[1024];
DECLARE_ALIGNED(32, float, ff_aac_kbd_short_128)[128];
DECLARE_ALIGNED(32, int, ff_aac_kbd_long_1024_fixed)[1024];

3
libavcodec/aactab.h
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@ -30,12 +30,15 @@
#ifndef AVCODEC_AACTAB_H
#define AVCODEC_AACTAB_H
#include "libavutil/thread.h"
#include "libavutil/mem.h"
#include "aac.h"
#include "aac_tablegen_decl.h"
#include <stdint.h>
extern AVOnce aac_table_init; /* Protects ff_aac_tableinit() */
/* NOTE:
* Tables in this file are used by the AAC decoder and will be used by the AAC
* encoder.