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wavparse: Fix up comments regarding DTS

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This commit is contained in:
David Schleef 2015-03-26 13:42:02 -07:00
parent 84725d62b5
commit 59756c1898
1 changed files with 7 additions and 3 deletions
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10
gst/wavparse/gstwavparse.c
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@ -1827,12 +1827,16 @@ gst_wavparse_have_dts_caps (const GstCaps * caps, GstTypeFindProbability prob)
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_has_name (s, "audio/x-dts"))
return FALSE;
if (prob >= GST_TYPE_FIND_LIKELY)
/* typefind behavior for DTS:
* MAXIMUM: multiple frame syncs detected, certainly DTS
* LIKELY: single frame sync at offset 0. Maybe DTS?
* POSSIBLE: single frame sync, not at offset 0. Highly unlikely
* to be DTS. */
if (prob > GST_TYPE_FIND_LIKELY)
return TRUE;
/* DTS at non-0 offsets and without second sync may yield POSSIBLE .. */
if (prob <= GST_TYPE_FIND_POSSIBLE)
return FALSE;
/* .. in which case we want at least a valid-looking rate and channels */
/* for maybe, check for at least a valid-looking rate and channels */
if (!gst_structure_has_field (s, "channels"))
return FALSE;
/* and for extra assurance we could also check the rate from the DTS frame