forked from pool/ffmpeg-6
Jan Engelhardt
fea91b2355
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-6?expand=0&rev=32
72 lines
3.1 KiB
Diff
72 lines
3.1 KiB
Diff
From 4671fb7dfb8e72b228e04f3b81da7f2003c62240 Mon Sep 17 00:00:00 2001
|
|
From: Paul B Mahol <onemda@gmail.com>
|
|
Date: Mon, 27 Nov 2023 00:38:56 +0100
|
|
Subject: [PATCH] avfilter/af_dialoguenhance: simplify channels copy
|
|
References: https://bugzilla.opensuse.org/1222730
|
|
References: CVE-2023-49528
|
|
|
|
---
|
|
libavfilter/af_dialoguenhance.c | 32 +++++++++++++++++---------------
|
|
1 file changed, 17 insertions(+), 15 deletions(-)
|
|
|
|
diff --git a/libavfilter/af_dialoguenhance.c b/libavfilter/af_dialoguenhance.c
|
|
index 29c8ab10a7..5c8614c185 100644
|
|
--- a/libavfilter/af_dialoguenhance.c
|
|
+++ b/libavfilter/af_dialoguenhance.c
|
|
@@ -249,20 +249,21 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
|
|
float *left_osamples = (float *)out->extended_data[0];
|
|
float *right_osamples = (float *)out->extended_data[1];
|
|
float *center_osamples = (float *)out->extended_data[2];
|
|
- const int offset = s->fft_size - s->overlap;
|
|
- const int nb_samples = FFMIN(s->overlap, s->in->nb_samples);
|
|
+ const int overlap = s->overlap;
|
|
+ const int offset = s->fft_size - overlap;
|
|
+ const int nb_samples = FFMIN(overlap, s->in->nb_samples);
|
|
float vad;
|
|
|
|
// shift in/out buffers
|
|
- memmove(left_in, &left_in[s->overlap], offset * sizeof(float));
|
|
- memmove(right_in, &right_in[s->overlap], offset * sizeof(float));
|
|
- memmove(left_out, &left_out[s->overlap], offset * sizeof(float));
|
|
- memmove(right_out, &right_out[s->overlap], offset * sizeof(float));
|
|
+ memmove(left_in, &left_in[overlap], offset * sizeof(float));
|
|
+ memmove(right_in, &right_in[overlap], offset * sizeof(float));
|
|
+ memmove(left_out, &left_out[overlap], offset * sizeof(float));
|
|
+ memmove(right_out, &right_out[overlap], offset * sizeof(float));
|
|
|
|
memcpy(&left_in[offset], left_samples, nb_samples * sizeof(float));
|
|
memcpy(&right_in[offset], right_samples, nb_samples * sizeof(float));
|
|
- memset(&left_out[offset], 0, s->overlap * sizeof(float));
|
|
- memset(&right_out[offset], 0, s->overlap * sizeof(float));
|
|
+ memset(&left_out[offset], 0, overlap * sizeof(float));
|
|
+ memset(&right_out[offset], 0, overlap * sizeof(float));
|
|
|
|
apply_window(s, left_in, windowed_left, 0);
|
|
apply_window(s, right_in, windowed_right, 0);
|
|
@@ -292,14 +293,15 @@ static int de_stereo(AVFilterContext *ctx, AVFrame *out)
|
|
|
|
apply_window(s, windowed_oleft, left_out, 1);
|
|
|
|
- for (int i = 0; i < s->overlap; i++) {
|
|
- // 4 times overlap with squared hanning window results in 1.5 time increase in amplitude
|
|
- if (!ctx->is_disabled)
|
|
+ memcpy(left_osamples, left_in, overlap * sizeof(float));
|
|
+ memcpy(right_osamples, right_in, overlap * sizeof(float));
|
|
+
|
|
+ // 4 times overlap with squared hanning window results in 1.5 time increase in amplitude
|
|
+ if (!ctx->is_disabled) {
|
|
+ for (int i = 0; i < overlap; i++)
|
|
center_osamples[i] = left_out[i] / 1.5f;
|
|
- else
|
|
- center_osamples[i] = 0.f;
|
|
- left_osamples[i] = left_in[i];
|
|
- right_osamples[i] = right_in[i];
|
|
+ } else {
|
|
+ memset(center_osamples, 0, overlap * sizeof(float));
|
|
}
|
|
|
|
return 0;
|
|
--
|
|
2.44.0
|
|
|