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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsf.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsf.c b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsf.c new file mode 100644 index 0000000000..7192eaab49 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsf.c @@ -0,0 +1,32 @@ +/* + * 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_Poly2Lsf.c + +******************************************************************/ + +#include "modules/audio_coding/codecs/ilbc/poly_to_lsf.h" + +#include "modules/audio_coding/codecs/ilbc/constants.h" +#include "modules/audio_coding/codecs/ilbc/lsp_to_lsf.h" +#include "modules/audio_coding/codecs/ilbc/poly_to_lsp.h" + +void WebRtcIlbcfix_Poly2Lsf( + int16_t *lsf, /* (o) lsf coefficients (Q13) */ + int16_t *a /* (i) A coefficients (Q12) */ + ) { + int16_t lsp[10]; + WebRtcIlbcfix_Poly2Lsp(a, lsp, (int16_t*)WebRtcIlbcfix_kLspMean); + WebRtcIlbcfix_Lsp2Lsf(lsp, lsf, 10); +} |