| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Common code for the RTP depacketization of MPEG-1/2 formats. | ||
| 3 | * Copyright (c) 2002 Fabrice Bellard | ||
| 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.h" | ||
| 23 | #include "libavutil/intreadwrite.h" | ||
| 24 | #include "rtpdec_formats.h" | ||
| 25 | |||
| 26 | ✗ | static int mpeg_parse_packet(AVFormatContext *ctx, PayloadContext *data, | |
| 27 | AVStream *st, AVPacket *pkt, uint32_t *timestamp, | ||
| 28 | const uint8_t *buf, int len, uint16_t seq, | ||
| 29 | int flags) | ||
| 30 | { | ||
| 31 | unsigned int h; | ||
| 32 | int ret; | ||
| 33 | ✗ | if (len <= 4) | |
| 34 | ✗ | return AVERROR_INVALIDDATA; | |
| 35 | ✗ | h = AV_RB32(buf); | |
| 36 | ✗ | buf += 4; | |
| 37 | ✗ | len -= 4; | |
| 38 | ✗ | if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && h & (1 << 26)) { | |
| 39 | /* MPEG-2 */ | ||
| 40 | ✗ | if (len <= 4) | |
| 41 | ✗ | return AVERROR_INVALIDDATA; | |
| 42 | ✗ | buf += 4; | |
| 43 | ✗ | len -= 4; | |
| 44 | } | ||
| 45 | ✗ | if ((ret = av_new_packet(pkt, len)) < 0) | |
| 46 | ✗ | return ret; | |
| 47 | ✗ | memcpy(pkt->data, buf, len); | |
| 48 | ✗ | pkt->stream_index = st->index; | |
| 49 | ✗ | return 0; | |
| 50 | } | ||
| 51 | |||
| 52 | const RTPDynamicProtocolHandler ff_mpeg_audio_dynamic_handler = { | ||
| 53 | .codec_type = AVMEDIA_TYPE_AUDIO, | ||
| 54 | .codec_id = AV_CODEC_ID_MP3, | ||
| 55 | .need_parsing = AVSTREAM_PARSE_FULL, | ||
| 56 | .parse_packet = mpeg_parse_packet, | ||
| 57 | .static_payload_id = 14, | ||
| 58 | }; | ||
| 59 | |||
| 60 | const RTPDynamicProtocolHandler ff_mpeg_video_dynamic_handler = { | ||
| 61 | .codec_type = AVMEDIA_TYPE_VIDEO, | ||
| 62 | .codec_id = AV_CODEC_ID_MPEG2VIDEO, | ||
| 63 | .need_parsing = AVSTREAM_PARSE_FULL, | ||
| 64 | .parse_packet = mpeg_parse_packet, | ||
| 65 | .static_payload_id = 32, | ||
| 66 | }; | ||
| 67 |