diff options
Diffstat (limited to 'third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsp.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsp.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsp.h b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsp.h new file mode 100644 index 0000000000..928ee4efdb --- /dev/null +++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/poly_to_lsp.h @@ -0,0 +1,36 @@ +/* + * 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_Poly2Lsp.h + +******************************************************************/ + +#ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_ +#define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_ + +#include <stdint.h> + +/*----------------------------------------------------------------* + * conversion from lpc coefficients to lsp coefficients + * function is only for 10:th order LPC + *---------------------------------------------------------------*/ + +void WebRtcIlbcfix_Poly2Lsp( + int16_t* a, /* (o) A coefficients in Q12 */ + int16_t* lsp, /* (i) LSP coefficients in Q15 */ + int16_t* old_lsp /* (i) old LSP coefficients that are used if the new + coefficients turn out to be unstable */ + ); + +#endif |