avcodec/utils: Better check for channels in av_get_audio_frame_duration()
Fixes integer overflow Fixes: 0c2625f236ced104d402b4a03c0d65c7/asan_generic_274e1ce_5990_9314e7a67c26aecf011b178ade9f217c.avi Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -3067,7 +3067,7 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
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return frame_bytes * 8 / bps;
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}
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if (ch > 0) {
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if (ch > 0 && ch < INT_MAX/16) {
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/* calc from frame_bytes and channels */
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switch (id) {
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case AV_CODEC_ID_ADPCM_AFC:
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