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avcodec/mpegutils: Avoid allocations when using AVBPrint 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-03-23 13:01:11 +01:00
parent 0963ef4996
commit 5eda98f382
1 changed files with 5 additions and 16 deletions
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21
libavcodec/mpegutils.c
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@ -252,7 +252,6 @@ 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;
int margin_left;
int x_step;
@ -278,16 +277,11 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict,
x_step = (mb_width * 16 > 999) ? 8 : 4;
for (x = 0; x < mb_width; x += x_step)
av_bprintf(&buf, "%-*d", n * x_step, x << 4);
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);
av_log(avctx, AV_LOG_DEBUG, "%s\n", buf.str);
for (y = 0; y < mb_height; y++) {
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
av_bprint_clear(&buf);
for (x = 0; x < mb_width; x++) {
if (x == 0)
av_bprintf(&buf, "%*d ", margin_left - 1, y << 4);
@ -310,13 +304,8 @@ void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict,
}
}
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);
av_log(avctx, AV_LOG_DEBUG, "%s\n", buf.str);
}
av_bprint_finalize(&buf, NULL);
}
}