| /* $Id$ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #ifndef __PJMEDIA_CODEC_G722_H__ |
| #define __PJMEDIA_CODEC_G722_H__ |
| |
| /** |
| * @file pjmedia-codec/g722.h |
| * @brief G.722 codec. |
| */ |
| |
| #include <pjmedia-codec/types.h> |
| |
| /** |
| * @defgroup PJMED_G722 G.722 Codec |
| * @ingroup PJMEDIA_CODEC_CODECS |
| * @brief Implementation of G.722 Codec |
| * @{ |
| * |
| * This section describes functions to initialize and register G.722 codec |
| * factory to the codec manager. After the codec factory has been registered, |
| * application can use @ref PJMEDIA_CODEC API to manipulate the codec. |
| * |
| * The G.722 implementation uses 16-bit PCM with sampling rate 16000Hz and |
| * 20ms frame length resulting in 64kbps bitrate. |
| * |
| * The G.722 codec implementation is provided as part of pjmedia-codec |
| * library, and does not depend on external G.722 codec implementation. |
| * |
| * \section codec_setting Codec Settings |
| * |
| * \subsection general_setting General Settings |
| * |
| * General codec settings for this codec such as VAD and PLC can be |
| * manipulated through the <tt>setting</tt> field in #pjmedia_codec_param. |
| * Please see the documentation of #pjmedia_codec_param for more info. |
| * |
| * \subsection specific_setting Codec Specific Settings |
| * |
| * Currently none. |
| */ |
| |
| PJ_BEGIN_DECL |
| |
| |
| /** |
| * Initialize and register G.722 codec factory to pjmedia endpoint. |
| * |
| * @param endpt The pjmedia endpoint. |
| * |
| * @return PJ_SUCCESS on success. |
| */ |
| PJ_DECL(pj_status_t) pjmedia_codec_g722_init(pjmedia_endpt *endpt); |
| |
| |
| /** |
| * Unregister G.722 codec factory from pjmedia endpoint and cleanup |
| * resources allocated by the factory. |
| * |
| * @return PJ_SUCCESS on success. |
| */ |
| PJ_DECL(pj_status_t) pjmedia_codec_g722_deinit(void); |
| |
| |
| /** |
| * Set the G.722 codec encoder and decoder level adjustment. |
| * If the value is non-zero, then PCM input samples to the encoder will |
| * be shifted right by this value, and similarly PCM output samples from |
| * the decoder will be shifted left by this value. |
| * |
| * Default value is PJMEDIA_G722_DEFAULT_PCM_SHIFT. |
| * |
| * @param val The value |
| * |
| * @return PJ_SUCCESS on success. |
| */ |
| PJ_DECL(pj_status_t) pjmedia_codec_g722_set_pcm_shift(unsigned val); |
| |
| |
| PJ_END_DECL |
| |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* __PJMEDIA_CODEC_G722_H__ */ |
| |