zqz/platform-external-webrtc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Clamp decoder sample rate to 32000 in iSAC

Browse Source 
We want to crate the illusion that iSAC supports 48000 Hz decoding,
while in fact it outputs 32000 Hz. This is the iSAC fullband mode.

Currently this is (also) handled by higher layers, but in future
changes this will not be the case.

R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/47809004

Cr-Commit-Position: refs/heads/master@{#8889}
This commit is contained in:
Henrik Lundin
2015-03-30 15:01:40 +02:00
parent 1ecfd55044
commit 582f80e95c
1 changed files with 4 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
webrtc/modules/audio_coding/codecs/isac/audio_encoder_isac_t_impl.h
View File

@ -226,6 +226,10 @@ int AudioEncoderDecoderIsacT<T>::DecodeInternal(const uint8_t* encoded,
int16_t* decoded,
SpeechType* speech_type) {
CriticalSectionScoped cs(state_lock_.get());
// We want to crate the illusion that iSAC supports 48000 Hz decoding, while
// in fact it outputs 32000 Hz. This is the iSAC fullband mode.
if (sample_rate_hz == 48000)
sample_rate_hz = 32000;
CHECK(sample_rate_hz == 16000 || sample_rate_hz == 32000)
<< "Unsupported sample rate " << sample_rate_hz;
if (sample_rate_hz != decoder_sample_rate_hz_) {