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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/modules/audio_coding/codecs/ilbc/enhancer.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/enhancer.c b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/enhancer.c new file mode 100644 index 0000000000..bd4e60015c --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/enhancer.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +/****************************************************************** + + iLBC Speech Coder ANSI-C Source Code + + WebRtcIlbcfix_Enhancer.c + +******************************************************************/ + +#include "modules/audio_coding/codecs/ilbc/enhancer.h" + +#include "modules/audio_coding/codecs/ilbc/constants.h" +#include "modules/audio_coding/codecs/ilbc/defines.h" +#include "modules/audio_coding/codecs/ilbc/get_sync_seq.h" +#include "modules/audio_coding/codecs/ilbc/smooth.h" + +/*----------------------------------------------------------------* + * perform enhancement on idata+centerStartPos through + * idata+centerStartPos+ENH_BLOCKL-1 + *---------------------------------------------------------------*/ + +void WebRtcIlbcfix_Enhancer( + int16_t *odata, /* (o) smoothed block, dimension blockl */ + int16_t *idata, /* (i) data buffer used for enhancing */ + size_t idatal, /* (i) dimension idata */ + size_t centerStartPos, /* (i) first sample current block within idata */ + size_t *period, /* (i) pitch period array (pitch bward-in time) */ + const size_t *plocs, /* (i) locations where period array values valid */ + size_t periodl /* (i) dimension of period and plocs */ + ){ + /* Stack based */ + int16_t surround[ENH_BLOCKL]; + + WebRtcSpl_MemSetW16(surround, 0, ENH_BLOCKL); + + /* get said second sequence of segments */ + + WebRtcIlbcfix_GetSyncSeq(idata, idatal, centerStartPos, period, plocs, + periodl, ENH_HL, surround); + + /* compute the smoothed output from said second sequence */ + + WebRtcIlbcfix_Smooth(odata, idata + centerStartPos, surround); +} |