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avfilter/af_surround: fix possible out of array access

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Paul B Mahol 2022-11-19 19:33:34 +01:00
parent 7f3e38bda8
commit 34eeb466fb
1 changed files with 2 additions and 3 deletions
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5
libavfilter/af_surround.c
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@ -388,13 +388,12 @@ static inline void get_lfe(int output_lfe, int n, float lowcut, float highcut,
dst[2 * n ] = mag * cosf(ph); \ dst[2 * n ] = mag * cosf(ph); \
dst[2 * n + 1] = mag * sinf(ph); dst[2 * n + 1] = mag * sinf(ph);
static void calculate_factors(AVFilterContext *ctx, int ch, int chan) static void calculate_factors(AVFilterContext *ctx, int ch, int chan)
{ {
AudioSurroundContext *s = ctx->priv; AudioSurroundContext *s = ctx->priv;
float *factor = (float *)s->factors->extended_data[ch]; float *factor = (float *)s->factors->extended_data[ch];
const float f_x = s->f_x[sc_map[chan]]; const float f_x = s->f_x[sc_map[chan >= 0 ? chan : 0]];
const float f_y = s->f_y[sc_map[chan]]; const float f_y = s->f_y[sc_map[chan >= 0 ? chan : 0]];
const int rdft_size = s->rdft_size; const int rdft_size = s->rdft_size;
const float *x = s->x_pos; const float *x = s->x_pos;
const float *y = s->y_pos; const float *y = s->y_pos;