diff options
| author | Arun Raghavan <arun.raghavan@collabora.co.uk> | 2010-03-10 13:32:53 +0000 |
|---|---|---|
| committer | Tim-Philipp Müller <tim.muller@collabora.co.uk> | 2010-04-12 15:04:23 +0100 |
| commit | 34dcb8458e2dfee37f83e0a3bf37195a4d503bb2 (patch) | |
| tree | 4a8a78e8b3866a557288ba446b52da8f3fd26463 | |
| parent | 57cc1150a9f8ded33f7d0f47dd713b9eda05dc88 (diff) | |
typefinding: add AAC profile to ADTS caps
This looks at the AAC profile for ADTS streams and adds the profile as a
string in the corresponding caps.
Profile is the actual profile, base-profile denotes the minimum codec
requirements to decode this stream. In this case they're always the
same, but they may differ e.g. in case of certain HE-AAC streams that
can be partially decoded by LC decoders (with loss of quality of course)
if no suitable HE-AAC decoder is available.
Fixes #612312.
| -rw-r--r-- | gst/typefind/gsttypefindfunctions.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c index fecf7bf43..887dc2fae 100644 --- a/gst/typefind/gsttypefindfunctions.c +++ b/gst/typefind/gsttypefindfunctions.c @@ -650,6 +650,8 @@ static GstStaticCaps aac_caps = GST_STATIC_CAPS ("audio/mpeg, " static void aac_type_find (GstTypeFind * tf, gpointer unused) { + /* LUT to convert the AudioObjectType from the ADTS header to a string */ + static const gchar profile_to_string[][5] = { "main", "lc", "ssr", "ltp" }; DataScanCtx c = { 0, NULL, 0 }; while (c.offset < AAC_AMOUNT) { @@ -680,14 +682,17 @@ aac_type_find (GstTypeFind * tf, gpointer unused) snc = GST_READ_UINT16_BE (c.data + len); if ((snc & 0xfff6) == 0xfff0) { - gint mpegversion; + gint mpegversion, profile; mpegversion = (c.data[1] & 0x08) ? 2 : 4; + profile = c.data[2] >> 6; GST_DEBUG ("Found second ADTS-%d syncpoint at offset 0x%" G_GINT64_MODIFIER "x, framelen %u", mpegversion, c.offset, len); gst_type_find_suggest_simple (tf, GST_TYPE_FIND_LIKELY, "audio/mpeg", "framed", G_TYPE_BOOLEAN, FALSE, "mpegversion", G_TYPE_INT, mpegversion, + "base-profile", G_TYPE_STRING, profile_to_string[profile], + "profile", G_TYPE_STRING, profile_to_string[profile], "stream-type", G_TYPE_STRING, "adts", NULL); break; } |