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avformat/tty: Check avio_size()
Fixes: CID1220824 Overflowed constant
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 41745e550a
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -122,7 +122,9 @@ static int read_header(AVFormatContext *avctx)
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s->chars_per_frame = FFMAX(av_q2d(st->time_base)*s->chars_per_frame, 1);
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if (avctx->pb->seekable & AVIO_SEEKABLE_NORMAL) {
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s->fsize = avio_size(avctx->pb);
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int64_t fsize = avio_size(avctx->pb);
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if (fsize > 0) {
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s->fsize = fsize;
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st->duration = (s->fsize + s->chars_per_frame - 1) / s->chars_per_frame;
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if (ff_sauce_read(avctx, &s->fsize, 0, 0) < 0)
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@ -130,6 +132,7 @@ static int read_header(AVFormatContext *avctx)
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avio_seek(avctx->pb, 0, SEEK_SET);
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}
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}
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fail:
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return ret;
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