| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * copyright (c) 2007 Luca Abeni | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "libavutil/intreadwrite.h" | ||
| 22 | |||
| 23 | #include "avformat.h" | ||
| 24 | #include "rtpenc.h" | ||
| 25 | |||
| 26 | |||
| 27 | ✗ | void ff_rtp_send_aac(AVFormatContext *s1, const uint8_t *buff, int size) | |
| 28 | { | ||
| 29 | ✗ | RTPMuxContext *s = s1->priv_data; | |
| 30 | ✗ | AVStream *st = s1->streams[0]; | |
| 31 | ✗ | const int max_au_headers_size = 2 + 2 * s->max_frames_per_packet; | |
| 32 | ✗ | int len, max_packet_size = s->max_payload_size - max_au_headers_size; | |
| 33 | uint8_t *p; | ||
| 34 | |||
| 35 | /* skip ADTS header, if present */ | ||
| 36 | ✗ | if ((s1->streams[0]->codecpar->extradata_size) == 0) { | |
| 37 | ✗ | if (size < 7) { | |
| 38 | ✗ | av_log(s1, AV_LOG_ERROR, "AAC packet too small for ADTS header\n"); | |
| 39 | ✗ | return; | |
| 40 | } | ||
| 41 | ✗ | size -= 7; | |
| 42 | ✗ | buff += 7; | |
| 43 | } | ||
| 44 | |||
| 45 | /* test if the packet must be sent */ | ||
| 46 | ✗ | len = (s->buf_ptr - s->buf); | |
| 47 | ✗ | if (s->num_frames && | |
| 48 | ✗ | (s->num_frames == s->max_frames_per_packet || | |
| 49 | ✗ | (len + size) > s->max_payload_size || | |
| 50 | ✗ | av_compare_ts(s->cur_timestamp - s->timestamp, st->time_base, | |
| 51 | ✗ | s1->max_delay, AV_TIME_BASE_Q) >= 0)) { | |
| 52 | ✗ | int au_size = s->num_frames * 2; | |
| 53 | |||
| 54 | ✗ | p = s->buf + max_au_headers_size - au_size - 2; | |
| 55 | ✗ | if (p != s->buf) { | |
| 56 | ✗ | memmove(p + 2, s->buf + 2, au_size); | |
| 57 | } | ||
| 58 | /* Write the AU header size */ | ||
| 59 | ✗ | AV_WB16(p, au_size * 8); | |
| 60 | |||
| 61 | ✗ | ff_rtp_send_data(s1, p, s->buf_ptr - p, 1); | |
| 62 | |||
| 63 | ✗ | s->num_frames = 0; | |
| 64 | } | ||
| 65 | ✗ | if (s->num_frames == 0) { | |
| 66 | ✗ | s->buf_ptr = s->buf + max_au_headers_size; | |
| 67 | ✗ | s->timestamp = s->cur_timestamp; | |
| 68 | } | ||
| 69 | |||
| 70 | ✗ | if (size <= max_packet_size) { | |
| 71 | ✗ | p = s->buf + s->num_frames++ * 2 + 2; | |
| 72 | ✗ | AV_WB16(p, size * 8); | |
| 73 | ✗ | memcpy(s->buf_ptr, buff, size); | |
| 74 | ✗ | s->buf_ptr += size; | |
| 75 | } else { | ||
| 76 | ✗ | int au_size = size; | |
| 77 | |||
| 78 | ✗ | max_packet_size = s->max_payload_size - 4; | |
| 79 | ✗ | p = s->buf; | |
| 80 | ✗ | AV_WB16(p, 2 * 8); | |
| 81 | ✗ | while (size > 0) { | |
| 82 | ✗ | len = FFMIN(size, max_packet_size); | |
| 83 | ✗ | AV_WB16(&p[2], au_size * 8); | |
| 84 | ✗ | memcpy(p + 4, buff, len); | |
| 85 | ✗ | ff_rtp_send_data(s1, p, len + 4, len == size); | |
| 86 | ✗ | size -= len; | |
| 87 | ✗ | buff += len; | |
| 88 | } | ||
| 89 | } | ||
| 90 | } | ||
| 91 |