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Diffstat (limited to '')
| -rw-r--r-- | third_party/libwebrtc/modules/audio_coding/codecs/ilbc/lsp_to_lsf.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/lsp_to_lsf.h b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/lsp_to_lsf.h new file mode 100644 index 0000000000..a0dfb8e8eb --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/lsp_to_lsf.h @@ -0,0 +1,35 @@ +/* + * 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_Lsp2Lsf.h + +******************************************************************/ + +#ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_ +#define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_ + +#include <stdint.h> + +/*----------------------------------------------------------------* + * conversion from LSP coefficients to LSF coefficients + *---------------------------------------------------------------*/ + +void WebRtcIlbcfix_Lsp2Lsf( + int16_t* lsp, /* (i) lsp vector -1...+1 in Q15 */ + int16_t* lsf, /* (o) Lsf vector 0...Pi in Q13 + (ordered, so that lsf[i]<lsf[i+1]) */ + int16_t m /* (i) Number of coefficients */ +); + +#endif |