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4349 | Serge | 1 | /* |
2 | * Copyright (c) 2011 Miroslav Slugeň |
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3 | * |
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4 | * This file is part of FFmpeg. |
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5 | * |
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6 | * FFmpeg is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2.1 of the License, or (at your option) any later version. |
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10 | * |
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11 | * FFmpeg is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with FFmpeg; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
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20 | |||
21 | #include "libavutil/attributes.h" |
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22 | #include "avformat.h" |
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23 | #include "rtpdec_formats.h" |
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24 | |||
25 | #define RTP_G726_HANDLER(bitrate) \ |
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26 | static av_cold int g726_ ## bitrate ##_init(AVFormatContext *s, int st_index, \ |
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27 | PayloadContext *data) \ |
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28 | { \ |
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29 | AVStream *stream = s->streams[st_index]; \ |
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30 | AVCodecContext *codec = stream->codec; \ |
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31 | \ |
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32 | codec->bits_per_coded_sample = bitrate/8; \ |
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33 | codec->bit_rate = codec->bits_per_coded_sample * codec->sample_rate; \ |
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34 | \ |
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35 | return 0; \ |
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36 | } \ |
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37 | \ |
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38 | RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \ |
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39 | .enc_name = "G726-" #bitrate, \ |
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40 | .codec_type = AVMEDIA_TYPE_AUDIO, \ |
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41 | .codec_id = AV_CODEC_ID_ADPCM_G726, \ |
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42 | .init = g726_ ## bitrate ## _init, \ |
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43 | } |
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44 | |||
45 | RTP_G726_HANDLER(16); |
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46 | RTP_G726_HANDLER(24); |
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47 | RTP_G726_HANDLER(32); |
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48 | RTP_G726_HANDLER(40); |