avcodec/acelp_pitch_delay: Fix runtime error: value 4.83233e+39 is outside the range of representable values of type 'float'

Fixes: 1902/clusterfuzz-testcase-minimized-4762451407011840 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
8 years ago · 87bddba43b
parent 4020b009d1
commit 87bddba43b
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/acelp_pitch_delay.c
+++ b/libavcodec/acelp_pitch_delay.c
@ -135,7 +135,7 @@ float ff_amr_set_fixed_gain(float fixed_gain_factor, float fixed_mean_energy,
        ff_exp10(0.05 *
              (avpriv_scalarproduct_float_c(pred_table, prediction_error, 4) +
               energy_mean)) /
-        sqrtf(fixed_mean_energy);
+        sqrtf(fixed_mean_energy ? fixed_mean_energy : 1.0);

    // update quantified prediction error energy history
    memmove(&prediction_error[0], &prediction_error[1],