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68 lines
2.3 KiB
68 lines
2.3 KiB
/*
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The mediastreamer library aims at providing modular media processing and I/O
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for linphone, but also for any telephony application.
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Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MSCODEC_H
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#define MSCODEC_H
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#include "msfilter.h"
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struct _MSCodecInfo
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{
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MSFilterInfo info;
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MSFilterNewFunc encoder;
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MSFilterNewFunc decoder;
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gint fr_size; /* size in char of the uncompressed frame */
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gint dt_size; /* size in char of the compressed frame */
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gint bitrate; /* the minimum bit rate in bits/second */
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gint rate; /*frequency */
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gint pt; /* the payload type number associated with this codec*/
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gchar *description; /* a rtpmap field to describe the codec */
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guint is_usable:1; /* linphone set this flag to remember if it can use this codec considering the total bandwidth*/
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guint is_selected:1; /* linphone (user) set this flag if he allows this codec to be used*/
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};
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typedef struct _MSCodecInfo MSCodecInfo;
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MSFilter * ms_encoder_new(gchar *name);
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MSFilter * ms_decoder_new(gchar *name);
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MSFilter * ms_encoder_new_with_pt(gint pt);
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MSFilter * ms_decoder_new_with_pt(gint pt);
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MSFilter * ms_encoder_new_with_string_id(gchar *id);
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MSFilter * ms_decoder_new_with_string_id(gchar *id);
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/* return 0 if codec can be used with bandwidth, -1 else*/
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int ms_codec_is_usable(MSCodecInfo *codec,double bandwidth);
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GList * ms_codec_get_all_audio();
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GList * ms_codec_get_all_video();
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MSCodecInfo * ms_audio_codec_info_get(gchar *name);
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MSCodecInfo * ms_video_codec_info_get(gchar *name);
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/* register all statically linked codecs */
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void ms_codec_register_all();
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#define MS_CODEC_INFO(codinfo) ((MSCodecInfo*)codinfo)
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#endif
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