From 339a816c81a197b17ab642766a6721bd61746a80 Mon Sep 17 00:00:00 2001 From: He Junyan Date: Wed, 30 Dec 2020 23:00:51 +0800 Subject: [PATCH] codecs: Reset the quant matrices for each sequence in mpeg2 decoder. Part-of: --- gst-libs/gst/codecs/gstmpeg2decoder.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/gst-libs/gst/codecs/gstmpeg2decoder.c b/gst-libs/gst/codecs/gstmpeg2decoder.c index bb6b7b08a5..aaede9bce1 100644 --- a/gst-libs/gst/codecs/gstmpeg2decoder.c +++ b/gst-libs/gst/codecs/gstmpeg2decoder.c @@ -447,6 +447,11 @@ gst_mpeg2_decoder_handle_sequence (GstMpeg2Decoder * decoder, return FALSE; } + /* 6.1.1.6 Sequence header + The quantisation matrices may be redefined each time that a sequence + header occurs in the bitstream */ + priv->quant_matrix = QUANT_MATRIX_EXT_INIT; + if (_seq_hdr_is_valid (&priv->seq_hdr) && memcmp (&priv->seq_hdr, &seq_hdr, sizeof (seq_hdr)) == 0) return TRUE; @@ -454,7 +459,6 @@ gst_mpeg2_decoder_handle_sequence (GstMpeg2Decoder * decoder, priv->seq_ext = SEQ_EXT_INIT; priv->seq_display_ext = SEQ_DISPLAY_EXT_INIT; priv->seq_scalable_ext = SEQ_SCALABLE_EXT_INIT; - priv->quant_matrix = QUANT_MATRIX_EXT_INIT; priv->pic_ext = PIC_HDR_EXT_INIT; priv->seq_hdr = seq_hdr;