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| author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2016-06-06 16:54:29 -0400 |
|---|---|---|
| committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2016-06-08 02:07:42 -0400 |
| commit | a55d30c32f86c8ac7ba3222f3c6bdd7543c7d600 (patch) | |
| tree | e3039b7d8f827f4ac54059be1f80b1316db70e18 | |
| parent | de3cbd9b2882ab84d442b88e3a11a94c5411ee07 (diff) | |
| download | opus-a55d30c32f86c8ac7ba3222f3c6bdd7543c7d600.tar.gz | |
Don't use too much temporal resolution on hybrid frames at low rate
Otherwise, we risk having "temporal holes" in the HF that anti-collapse
can't always fill in.
| -rw-r--r-- | celt/celt_encoder.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/celt/celt_encoder.c b/celt/celt_encoder.c index bee593b5..db41b390 100644 --- a/celt/celt_encoder.c +++ b/celt/celt_encoder.c @@ -1772,6 +1772,13 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, tf_select = tf_analysis(mode, effEnd, isTransient, tf_res, lambda, X, N, LM, &tf_sum, tf_estimate, tf_chan); for (i=effEnd;i<end;i++) tf_res[i] = tf_res[effEnd-1]; + } else if (hybrid && effectiveBytes<15) + { + /* For low bitrate hybrid, we force temporal resolution to 5 ms rather than 2.5 ms. */ + tf_sum = 0; + for (i=0;i<end;i++) + tf_res[i] = 0; + tf_select=isTransient; } else { tf_sum = 0; for (i=0;i<end;i++) |