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h264parse: Stop considering NO_NAL as an error

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The NO_NAL return value simply means that the buffer did not contain
enough data to identity a NAL. This should lead to waiting for more data not
considering the stream as invalid.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3234>
This commit is contained in:
Nicolas Dufresne 2023-03-15 15:55:02 -04:00 committed by GStreamer Marge Bot
parent 0780e31581
commit 9deb3d6aa4
1 changed files with 9 additions and 7 deletions
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16
subprojects/gst-plugins-bad/gst/videoparsers/gsth264parse.c
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@ -1417,9 +1417,8 @@ gst_h264_parse_handle_frame (GstBaseParse * parse,
}
break;
case GST_H264_PARSER_NO_NAL:
/* Start code may have up to 4 bytes */
*skipsize = size - 4;
goto skip;
/* we don't have enough bytes to make any decisions yet */
goto more;
break;
default:
/* should not really occur either */
@ -1443,6 +1442,13 @@ gst_h264_parse_handle_frame (GstBaseParse * parse,
GST_DEBUG_OBJECT (h264parse, "complete nal (offset, size): (%u, %u) ",
nalu.offset, nalu.size);
break;
case GST_H264_PARSER_NO_NAL:
/* In NAL alignment, assume the NAL is broken */
if (h264parse->in_align == GST_H264_PARSE_ALIGN_NAL ||
h264parse->in_align == GST_H264_PARSE_ALIGN_AU) {
goto broken;
}
goto more;
case GST_H264_PARSER_NO_NAL_END:
/* In NAL alignment, assume the NAL is complete */
if (h264parse->in_align == GST_H264_PARSE_ALIGN_NAL ||
@ -1476,10 +1482,6 @@ gst_h264_parse_handle_frame (GstBaseParse * parse,
GST_ELEMENT_ERROR (h264parse, STREAM, FORMAT,
("Error parsing H.264 stream"), ("Invalid H.264 stream"));
goto invalid_stream;
case GST_H264_PARSER_NO_NAL:
GST_ELEMENT_ERROR (h264parse, STREAM, FORMAT,
("Error parsing H.264 stream"), ("No H.264 NAL unit found"));
goto invalid_stream;
case GST_H264_PARSER_BROKEN_DATA:
GST_WARNING_OBJECT (h264parse, "input stream is corrupt; "
"it contains a NAL unit of length %u", nalu.size);