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avcodec/mpegutils: make debug_info2 thread safe

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Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili 2023-12-30 01:20:15 +08:00
parent 7f900a737f
commit bd48c08f80
1 changed files with 16 additions and 5 deletions
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21
libavcodec/mpegutils.c
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@ -20,6 +20,7 @@
#include <stdint.h>
#include "libavutil/bprint.h"
#include "libavutil/common.h"
#include "libavutil/emms.h"
#include "libavutil/frame.h"
@ -250,31 +251,41 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict,
if (avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
int x,y;
AVBPrint buf;
char *str = NULL;
int n;
av_log(avctx, AV_LOG_DEBUG, "New frame, type: %c\n",
av_get_picture_type_char(pict->pict_type));
for (y = 0; y < mb_height; y++) {
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
for (x = 0; x < mb_width; x++) {
if (avctx->debug & FF_DEBUG_SKIP) {
int count = mbskip_table ? mbskip_table[x + y * mb_stride] : 0;
if (count > 9)
count = 9;
av_log(avctx, AV_LOG_DEBUG, "%1d", count);
av_bprintf(&buf, "%1d", count);
}
if (avctx->debug & FF_DEBUG_QP) {
av_log(avctx, AV_LOG_DEBUG, "%2d",
qscale_table[x + y * mb_stride]);
av_bprintf(&buf, "%2d", qscale_table[x + y * mb_stride]);
}
if (avctx->debug & FF_DEBUG_MB_TYPE) {
int mb_type = mbtype_table[x + y * mb_stride];
av_log(avctx, AV_LOG_DEBUG, "%c%c%c",
av_bprintf(&buf, "%c%c%c",
get_type_mv_char(mb_type),
get_segmentation_char(mb_type),
get_interlacement_char(mb_type));
}
}
av_log(avctx, AV_LOG_DEBUG, "\n");
n = av_bprint_finalize(&buf, &str);
if (n < 0) {
av_log(avctx, AV_LOG_ERROR, "%s failed, %s\n", __func__, av_err2str(n));
return;
}
av_log(avctx, AV_LOG_DEBUG, "%s\n", str);
av_freep(&str);
}
}
}