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ff_dv_frame_profile2: Check input buffer size.
Based on code by DivX, Inc. / drffmpeg Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -249,11 +249,13 @@ static const DVprofile dv_profiles[] = {
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const DVprofile* ff_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
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const DVprofile* ff_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
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const uint8_t* frame, unsigned buf_size)
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const uint8_t* frame, unsigned buf_size)
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{
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{
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int i;
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int i, dsf, stype;
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int dsf = (frame[3] & 0x80) >> 7;
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if(buf_size < DV_PROFILE_BYTES)
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return NULL;
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int stype = frame[80*5 + 48 + 3] & 0x1f;
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dsf = (frame[3] & 0x80) >> 7;
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stype = frame[80*5 + 48 + 3] & 0x1f;
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/* 576i50 25Mbps 4:1:1 is a special case */
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/* 576i50 25Mbps 4:1:1 is a special case */
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if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
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if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
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