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qsvdec: only access hwaccel_context is the pixel format is QSV
We do not strictly specify that hwaccel_context must be cleared if no hwaccel is used. Reported-By: wm4 <nfxjfg@googlemail.com>
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@ -106,7 +106,7 @@ static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q)
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return AVERROR(ENOMEM);
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}
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if (avctx->hwaccel_context) {
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if (avctx->pix_fmt == AV_PIX_FMT_QSV && avctx->hwaccel_context) {
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AVQSVContext *user_ctx = avctx->hwaccel_context;
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session = user_ctx->session;
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iopattern = user_ctx->iopattern;
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