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hlsdemux2: Fix parsing of EXT-X-DISCONTINUITY-SEQUENCE:0

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Since the default value of `m3u8->discont_sequence` (before parsing of the
playlist data) was 0 .. we would never properly detect the presence of that
field if it was present with a value of 0.

This would later on cause havoc in playlist synchronization where we would
assume it didn't have a discontinuity sequence specified (whereas it did, and it
was 0).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6610>
This commit is contained in:
Edward Hervey 2024-04-12 15:48:34 +02:00 committed by GStreamer Marge Bot
parent d2b3262b71
commit 9a7f455aea
1 changed files with 4 additions and 1 deletions
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5
subprojects/gst-plugins-good/ext/adaptivedemux2/hls/m3u8.c
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@ -417,7 +417,7 @@ gst_hls_media_playlist_new (const gchar * uri, const gchar * base_uri)
m3u8->targetduration = GST_CLOCK_TIME_NONE; m3u8->targetduration = GST_CLOCK_TIME_NONE;
m3u8->partial_targetduration = GST_CLOCK_TIME_NONE; m3u8->partial_targetduration = GST_CLOCK_TIME_NONE;
m3u8->media_sequence = 0; m3u8->media_sequence = 0;
m3u8->discont_sequence = 0; m3u8->discont_sequence = -1;
m3u8->endlist = FALSE; m3u8->endlist = FALSE;
m3u8->i_frame = FALSE; m3u8->i_frame = FALSE;
m3u8->allowcache = TRUE; m3u8->allowcache = TRUE;
@ -1243,6 +1243,9 @@ gst_hls_media_playlist_parse (gchar * data,
return NULL; return NULL;
} }
if (!self->has_ext_x_dsn)
self->discont_sequence = 0;
/* Now go over the parsed data to ensure MSN and/or PDT are set */ /* Now go over the parsed data to ensure MSN and/or PDT are set */
if (self->ext_x_pdt_present) if (self->ext_x_pdt_present)
gst_hls_media_playlist_postprocess_pdt (self); gst_hls_media_playlist_postprocess_pdt (self);