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mpeg2: fix decoding of 4K videos.

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Account for slice_vertical_position_extension when vertical_size > 2800.
This commit is contained in:
Gwenole Beauchesne 2013-01-30 18:38:38 +01:00
parent 564ca5d221
commit 06725d651e
1 changed files with 3 additions and 2 deletions
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5
gst-libs/gst/vaapi/gstvaapidecoder_mpeg2.c
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@ -1127,7 +1127,7 @@ parse_slice(GstVaapiDecoderMpeg2 *decoder,
GstMpegVideoSliceHdr *slice_hdr; GstMpegVideoSliceHdr *slice_hdr;
GstBitReader br; GstBitReader br;
gint mb_x, mb_y, mb_inc; gint mb_x, mb_y, mb_inc;
guint8 slice_vertical_position_extension; guint8 slice_vertical_position_extension = 0;
guint8 extra_bit_slice, junk8; guint8 extra_bit_slice, junk8;
priv->state &= (GST_MPEG_VIDEO_STATE_GOT_SEQ_HDR| priv->state &= (GST_MPEG_VIDEO_STATE_GOT_SEQ_HDR|
@ -1164,7 +1164,8 @@ parse_slice(GstVaapiDecoderMpeg2 *decoder,
} }
slice_hdr->header_size = 32 + gst_bit_reader_get_pos(&br); slice_hdr->header_size = 32 + gst_bit_reader_get_pos(&br);
mb_y = packet->type - GST_MPEG_VIDEO_PACKET_SLICE_MIN; mb_y = ((guint)slice_vertical_position_extension << 7) +
packet->type - GST_MPEG_VIDEO_PACKET_SLICE_MIN;
mb_x = -1; mb_x = -1;
do { do {
if (!decode_vlc(&br, &mb_inc, mpeg2_mbaddr_vlc_table, if (!decode_vlc(&br, &mb_inc, mpeg2_mbaddr_vlc_table,