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Rev | Author | Line No. | Line |
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4349 | Serge | 1 | /* |
2 | * RTP muxer chaining code |
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3 | * Copyright (c) 2010 Martin Storsjo |
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4 | * |
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5 | * This file is part of FFmpeg. |
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6 | * |
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7 | * FFmpeg is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU Lesser General Public |
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9 | * License as published by the Free Software Foundation; either |
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10 | * version 2.1 of the License, or (at your option) any later version. |
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11 | * |
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12 | * FFmpeg is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | * Lesser General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU Lesser General Public |
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18 | * License along with FFmpeg; if not, write to the Free Software |
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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20 | */ |
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21 | |||
22 | #include "avformat.h" |
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23 | #include "avio_internal.h" |
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24 | #include "rtpenc_chain.h" |
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25 | #include "rtp.h" |
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26 | #include "libavutil/opt.h" |
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27 | |||
28 | int ff_rtp_chain_mux_open(AVFormatContext **out, AVFormatContext *s, |
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29 | AVStream *st, URLContext *handle, int packet_size, |
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30 | int idx) |
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31 | { |
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32 | AVFormatContext *rtpctx = NULL; |
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33 | int ret; |
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34 | AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL); |
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35 | uint8_t *rtpflags; |
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36 | AVDictionary *opts = NULL; |
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37 | |||
38 | if (!rtp_format) { |
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39 | ret = AVERROR(ENOSYS); |
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40 | goto fail; |
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41 | } |
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42 | |||
43 | /* Allocate an AVFormatContext for each output stream */ |
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44 | rtpctx = avformat_alloc_context(); |
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45 | if (!rtpctx) { |
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46 | ret = AVERROR(ENOMEM); |
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47 | goto fail; |
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48 | } |
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49 | |||
50 | rtpctx->oformat = rtp_format; |
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51 | if (!avformat_new_stream(rtpctx, NULL)) { |
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52 | ret = AVERROR(ENOMEM); |
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53 | goto fail; |
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54 | } |
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55 | /* Pass the interrupt callback on */ |
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56 | rtpctx->interrupt_callback = s->interrupt_callback; |
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57 | /* Copy the max delay setting; the rtp muxer reads this. */ |
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58 | rtpctx->max_delay = s->max_delay; |
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59 | /* Copy other stream parameters. */ |
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60 | rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio; |
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61 | rtpctx->flags |= s->flags & AVFMT_FLAG_MP4A_LATM; |
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62 | |||
63 | /* Get the payload type from the codec */ |
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64 | if (st->id < RTP_PT_PRIVATE) |
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65 | rtpctx->streams[0]->id = |
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66 | ff_rtp_get_payload_type(s, st->codec, idx); |
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67 | else |
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68 | rtpctx->streams[0]->id = st->id; |
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69 | |||
70 | |||
71 | if (av_opt_get(s, "rtpflags", AV_OPT_SEARCH_CHILDREN, &rtpflags) >= 0) |
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72 | av_dict_set(&opts, "rtpflags", rtpflags, AV_DICT_DONT_STRDUP_VAL); |
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73 | |||
74 | /* Set the synchronized start time. */ |
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75 | rtpctx->start_time_realtime = s->start_time_realtime; |
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76 | |||
77 | avcodec_copy_context(rtpctx->streams[0]->codec, st->codec); |
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78 | |||
79 | if (handle) { |
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80 | ret = ffio_fdopen(&rtpctx->pb, handle); |
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81 | if (ret < 0) |
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82 | ffurl_close(handle); |
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83 | } else |
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84 | ret = ffio_open_dyn_packet_buf(&rtpctx->pb, packet_size); |
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85 | if (!ret) |
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86 | ret = avformat_write_header(rtpctx, &opts); |
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87 | av_dict_free(&opts); |
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88 | |||
89 | if (ret) { |
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90 | if (handle && rtpctx->pb) { |
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91 | avio_close(rtpctx->pb); |
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92 | } else if (rtpctx->pb) { |
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93 | uint8_t *ptr; |
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94 | avio_close_dyn_buf(rtpctx->pb, &ptr); |
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95 | av_free(ptr); |
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96 | } |
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97 | avformat_free_context(rtpctx); |
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98 | return ret; |
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99 | } |
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100 | |||
101 | *out = rtpctx; |
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102 | return 0; |
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103 | |||
104 | fail: |
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105 | av_free(rtpctx); |
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106 | if (handle) |
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107 | ffurl_close(handle); |
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108 | return ret; |
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109 | }>> |