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61 lines
2.0 KiB
61 lines
2.0 KiB
/* |
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* RTP Packetization of MPEG-4 Audio (RFC 3016) |
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* Copyright (c) 2011 Juan Carlos Rodriguez <ing.juancarlosrodriguez@hotmail.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* |
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* Libav 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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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; 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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#include "avformat.h" |
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#include "rtpenc.h" |
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void ff_rtp_send_latm(AVFormatContext *s1, const uint8_t *buff, int size) |
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{ |
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/* MP4A-LATM |
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* The RTP payload format specification is described in RFC 3016 |
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* The encoding specifications are provided in ISO/IEC 14496-3 */ |
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RTPMuxContext *s = s1->priv_data; |
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int header_size; |
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int offset = 0; |
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int len = 0; |
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/* skip ADTS header, if present */ |
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if ((s1->streams[0]->codec->extradata_size) == 0) { |
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size -= 7; |
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buff += 7; |
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} |
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/* PayloadLengthInfo() */ |
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header_size = size/0xFF + 1; |
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memset(s->buf, 0xFF, header_size - 1); |
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s->buf[header_size - 1] = size % 0xFF; |
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s->timestamp = s->cur_timestamp; |
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/* PayloadMux() */ |
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while (size > 0) { |
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len = FFMIN(size, s->max_payload_size - (!offset ? header_size : 0)); |
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size -= len; |
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if (!offset) { |
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memcpy(s->buf + header_size, buff, len); |
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ff_rtp_send_data(s1, s->buf, header_size + len, !size); |
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} else { |
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ff_rtp_send_data(s1, buff + offset, len, !size); |
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} |
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offset += len; |
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} |
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}
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