avcodec: [loongson] fix bug of mss2-wmv failed in fate test.

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Failed case: mss2-wmv
In following functions, pmullh was used to multiply two 16-bit data, this will cause data overflow.
1. ff_vc1_inv_trans_8x8_dc_mmi
2. ff_vc1_inv_trans_8x8_mmi
3. ff_vc1_inv_trans_8x4_mmi
4. ff_vc1_inv_trans_4x8_mmi
5. ff_vc1_inv_trans_4x4_mmi

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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Shiyou Yin 2018-09-03 11:31:46 +08:00 committed by Michael Niedermayer

parent 23fe072e43

commit 61eeb40a62

1 changed files with 945 additions and 524 deletions

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libavcodec/mips/vc1dsp_mmi.c

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