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avcodec/bsf/noise: Avoid allocation for string

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-09-12 19:34:39 +02:00
committed by James Almer
parent 9ae42d42e6
commit 0ba0cf94db
1 changed files with 7 additions and 10 deletions
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17
libavcodec/bsf/noise.c
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@@ -18,13 +18,12 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include <stddef.h>
#include "bsf.h"
#include "bsf_internal.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/eval.h"
@@ -79,24 +78,22 @@ typedef struct NoiseContext {
static int noise_init(AVBSFContext *ctx)
{
NoiseContext *s = ctx->priv_data;
const char *amount_str = s->amount_str;
int ret;
if (!s->amount_str) {
s->amount_str = (!s->drop_str && !s->dropamount) ? av_strdup("-1") : av_strdup("0");
if (!s->amount_str)
return AVERROR(ENOMEM);
}
if (!amount_str)
amount_str = (!s->drop_str && !s->dropamount) ? "-1" : "0";
if (ctx->par_in->codec_id == AV_CODEC_ID_WRAPPED_AVFRAME &&
strcmp(s->amount_str, "0")) {
strcmp(amount_str, "0")) {
av_log(ctx, AV_LOG_ERROR, "Wrapped AVFrame noising is unsupported\n");
return AVERROR_PATCHWELCOME;
}
ret = av_expr_parse(&s->amount_pexpr, s->amount_str,
ret = av_expr_parse(&s->amount_pexpr, amount_str,
var_names, NULL, NULL, NULL, NULL, 0, ctx);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error in parsing expr for amount: %s\n", s->amount_str);
av_log(ctx, AV_LOG_ERROR, "Error in parsing expr for amount: %s\n", amount_str);
return ret;
}