| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RTP/mpegts muxer | ||
| 3 | * Copyright (c) 2011 Martin Storsjo | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/attributes_internal.h" | ||
| 23 | #include "libavutil/mathematics.h" | ||
| 24 | #include "libavutil/mem.h" | ||
| 25 | #include "libavutil/opt.h" | ||
| 26 | #include "avformat.h" | ||
| 27 | #include "avio_internal.h" | ||
| 28 | #include "mux.h" | ||
| 29 | |||
| 30 | typedef struct MuxChain { | ||
| 31 | const AVClass *class; | ||
| 32 | AVFormatContext *mpegts_ctx; | ||
| 33 | AVFormatContext *rtp_ctx; | ||
| 34 | AVPacket *pkt; | ||
| 35 | AVDictionary* mpegts_muxer_options; | ||
| 36 | AVDictionary* rtp_muxer_options; | ||
| 37 | } MuxChain; | ||
| 38 | |||
| 39 | ✗ | static int rtp_mpegts_write_close(AVFormatContext *s) | |
| 40 | { | ||
| 41 | ✗ | MuxChain *chain = s->priv_data; | |
| 42 | |||
| 43 | ✗ | if (chain->mpegts_ctx) { | |
| 44 | ✗ | av_write_trailer(chain->mpegts_ctx); | |
| 45 | ✗ | ffio_free_dyn_buf(&chain->mpegts_ctx->pb); | |
| 46 | ✗ | avformat_free_context(chain->mpegts_ctx); | |
| 47 | } | ||
| 48 | ✗ | if (chain->rtp_ctx) { | |
| 49 | ✗ | av_write_trailer(chain->rtp_ctx); | |
| 50 | ✗ | avformat_free_context(chain->rtp_ctx); | |
| 51 | } | ||
| 52 | |||
| 53 | ✗ | av_packet_free(&chain->pkt); | |
| 54 | |||
| 55 | ✗ | return 0; | |
| 56 | } | ||
| 57 | |||
| 58 | ✗ | static int rtp_mpegts_write_header(AVFormatContext *s) | |
| 59 | { | ||
| 60 | ✗ | MuxChain *chain = s->priv_data; | |
| 61 | ✗ | AVFormatContext *mpegts_ctx = NULL, *rtp_ctx = NULL; | |
| 62 | ✗ | int i, ret = AVERROR(ENOMEM); | |
| 63 | AVStream *new_st; | ||
| 64 | ✗ | AVDictionary *mpegts_muxer_options = NULL; | |
| 65 | ✗ | AVDictionary *rtp_muxer_options = NULL; | |
| 66 | |||
| 67 | ✗ | mpegts_ctx = avformat_alloc_context(); | |
| 68 | ✗ | if (!mpegts_ctx) | |
| 69 | ✗ | return AVERROR(ENOMEM); | |
| 70 | ✗ | chain->pkt = av_packet_alloc(); | |
| 71 | ✗ | if (!chain->pkt) | |
| 72 | ✗ | goto fail; | |
| 73 | EXTERN const FFOutputFormat ff_mpegts_muxer; | ||
| 74 | ✗ | mpegts_ctx->oformat = &ff_mpegts_muxer.p; | |
| 75 | ✗ | mpegts_ctx->max_delay = s->max_delay; | |
| 76 | ✗ | av_dict_copy(&mpegts_ctx->metadata, s->metadata, 0); | |
| 77 | ✗ | for (i = 0; i < s->nb_streams; i++) { | |
| 78 | ✗ | AVStream* st = avformat_new_stream(mpegts_ctx, NULL); | |
| 79 | ✗ | if (!st) | |
| 80 | ✗ | goto fail; | |
| 81 | ✗ | st->time_base = s->streams[i]->time_base; | |
| 82 | ✗ | st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio; | |
| 83 | ✗ | st->id = s->streams[i]->id; | |
| 84 | ✗ | avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar); | |
| 85 | } | ||
| 86 | ✗ | if ((ret = avio_open_dyn_buf(&mpegts_ctx->pb)) < 0) | |
| 87 | ✗ | goto fail; | |
| 88 | |||
| 89 | ✗ | av_dict_copy(&mpegts_muxer_options, chain->mpegts_muxer_options, 0); | |
| 90 | |||
| 91 | ✗ | ret = avformat_write_header(mpegts_ctx, &mpegts_muxer_options); | |
| 92 | ✗ | av_dict_free(&mpegts_muxer_options); | |
| 93 | ✗ | if (ret < 0) | |
| 94 | ✗ | goto fail; | |
| 95 | |||
| 96 | ✗ | for (i = 0; i < s->nb_streams; i++) | |
| 97 | ✗ | s->streams[i]->time_base = mpegts_ctx->streams[i]->time_base; | |
| 98 | |||
| 99 | ✗ | chain->mpegts_ctx = mpegts_ctx; | |
| 100 | ✗ | mpegts_ctx = NULL; | |
| 101 | |||
| 102 | ✗ | rtp_ctx = avformat_alloc_context(); | |
| 103 | ✗ | if (!rtp_ctx) { | |
| 104 | ✗ | ret = AVERROR(ENOMEM); | |
| 105 | ✗ | goto fail; | |
| 106 | } | ||
| 107 | EXTERN const FFOutputFormat ff_rtp_muxer; | ||
| 108 | ✗ | rtp_ctx->oformat = &ff_rtp_muxer.p; | |
| 109 | ✗ | new_st = avformat_new_stream(rtp_ctx, NULL); | |
| 110 | ✗ | if (!new_st) { | |
| 111 | ✗ | ret = AVERROR(ENOMEM); | |
| 112 | ✗ | goto fail; | |
| 113 | } | ||
| 114 | ✗ | new_st->time_base.num = 1; | |
| 115 | ✗ | new_st->time_base.den = 90000; | |
| 116 | ✗ | new_st->codecpar->codec_id = AV_CODEC_ID_MPEG2TS; | |
| 117 | ✗ | rtp_ctx->pb = s->pb; | |
| 118 | ✗ | av_dict_copy(&rtp_muxer_options, chain->rtp_muxer_options, 0); | |
| 119 | ✗ | ret = avformat_write_header(rtp_ctx, &rtp_muxer_options); | |
| 120 | ✗ | av_dict_free(&rtp_muxer_options); | |
| 121 | ✗ | if (ret < 0) | |
| 122 | ✗ | goto fail; | |
| 123 | |||
| 124 | ✗ | chain->rtp_ctx = rtp_ctx; | |
| 125 | |||
| 126 | ✗ | return 0; | |
| 127 | |||
| 128 | ✗ | fail: | |
| 129 | ✗ | if (mpegts_ctx) { | |
| 130 | ✗ | ffio_free_dyn_buf(&mpegts_ctx->pb); | |
| 131 | ✗ | av_dict_free(&mpegts_ctx->metadata); | |
| 132 | ✗ | avformat_free_context(mpegts_ctx); | |
| 133 | } | ||
| 134 | ✗ | avformat_free_context(rtp_ctx); | |
| 135 | ✗ | rtp_mpegts_write_close(s); | |
| 136 | ✗ | return ret; | |
| 137 | } | ||
| 138 | |||
| 139 | ✗ | static int rtp_mpegts_write_packet(AVFormatContext *s, AVPacket *pkt) | |
| 140 | { | ||
| 141 | ✗ | MuxChain *chain = s->priv_data; | |
| 142 | ✗ | int ret = 0, size; | |
| 143 | uint8_t *buf; | ||
| 144 | ✗ | AVPacket *local_pkt = chain->pkt; | |
| 145 | |||
| 146 | ✗ | if (!chain->mpegts_ctx->pb) { | |
| 147 | ✗ | if ((ret = avio_open_dyn_buf(&chain->mpegts_ctx->pb)) < 0) | |
| 148 | ✗ | return ret; | |
| 149 | } | ||
| 150 | ✗ | if ((ret = av_write_frame(chain->mpegts_ctx, pkt)) < 0) | |
| 151 | ✗ | return ret; | |
| 152 | ✗ | size = avio_close_dyn_buf(chain->mpegts_ctx->pb, &buf); | |
| 153 | ✗ | chain->mpegts_ctx->pb = NULL; | |
| 154 | ✗ | if (size == 0) { | |
| 155 | ✗ | av_free(buf); | |
| 156 | ✗ | return 0; | |
| 157 | } | ||
| 158 | ✗ | av_packet_unref(local_pkt); | |
| 159 | ✗ | local_pkt->data = buf; | |
| 160 | ✗ | local_pkt->size = size; | |
| 161 | ✗ | local_pkt->stream_index = 0; | |
| 162 | ✗ | if (pkt->pts != AV_NOPTS_VALUE) | |
| 163 | ✗ | local_pkt->pts = av_rescale_q(pkt->pts, | |
| 164 | ✗ | s->streams[pkt->stream_index]->time_base, | |
| 165 | ✗ | chain->rtp_ctx->streams[0]->time_base); | |
| 166 | ✗ | if (pkt->dts != AV_NOPTS_VALUE) | |
| 167 | ✗ | local_pkt->dts = av_rescale_q(pkt->dts, | |
| 168 | ✗ | s->streams[pkt->stream_index]->time_base, | |
| 169 | ✗ | chain->rtp_ctx->streams[0]->time_base); | |
| 170 | ✗ | ret = av_write_frame(chain->rtp_ctx, local_pkt); | |
| 171 | ✗ | av_free(buf); | |
| 172 | |||
| 173 | ✗ | return ret; | |
| 174 | } | ||
| 175 | |||
| 176 | #define OFFSET(x) offsetof(MuxChain, x) | ||
| 177 | #define E AV_OPT_FLAG_ENCODING_PARAM | ||
| 178 | static const AVOption options[] = { | ||
| 179 | { "mpegts_muxer_options", "set list of options for the MPEG-TS muxer", OFFSET(mpegts_muxer_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E }, | ||
| 180 | { "rtp_muxer_options", "set list of options for the RTP muxer", OFFSET(rtp_muxer_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E }, | ||
| 181 | { NULL }, | ||
| 182 | }; | ||
| 183 | |||
| 184 | static const AVClass rtp_mpegts_class = { | ||
| 185 | .class_name = "rtp_mpegts muxer", | ||
| 186 | .item_name = av_default_item_name, | ||
| 187 | .option = options, | ||
| 188 | .version = LIBAVUTIL_VERSION_INT, | ||
| 189 | }; | ||
| 190 | |||
| 191 | const FFOutputFormat ff_rtp_mpegts_muxer = { | ||
| 192 | .p.name = "rtp_mpegts", | ||
| 193 | .p.long_name = NULL_IF_CONFIG_SMALL("RTP/mpegts output format"), | ||
| 194 | .priv_data_size = sizeof(MuxChain), | ||
| 195 | .p.audio_codec = AV_CODEC_ID_AAC, | ||
| 196 | .p.video_codec = AV_CODEC_ID_MPEG4, | ||
| 197 | .write_header = rtp_mpegts_write_header, | ||
| 198 | .write_packet = rtp_mpegts_write_packet, | ||
| 199 | .write_trailer = rtp_mpegts_write_close, | ||
| 200 | .p.priv_class = &rtp_mpegts_class, | ||
| 201 | }; | ||
| 202 |