diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-21 16:52:06 +0400 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-21 16:52:42 +0400 |
commit | 950482bf587889c507340ae5893a851be8e99fcc (patch) | |
tree | 8ab3a6cb2b895518df5a594c69144985dc0e7cc8 /libavformat/rtpdec_mpegts.c | |
parent | c3f3c2256325532eb9ee8a44f1f43c31de79eb2f (diff) | |
parent | 2326558d5277ec87ba6d607a01ec6acfc51c694c (diff) |
Merge commit '2326558d5277ec87ba6d607a01ec6acfc51c694c'
* commit '2326558d5277ec87ba6d607a01ec6acfc51c694c':
rtpdec: Split mpegts parsing to a normal depacketizer
rtpdec: Reorder payload handler registration alphabetically
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/rtpdec_mpegts.c')
-rw-r--r-- | libavformat/rtpdec_mpegts.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/libavformat/rtpdec_mpegts.c b/libavformat/rtpdec_mpegts.c new file mode 100644 index 0000000000..cbb8eb49f7 --- /dev/null +++ b/libavformat/rtpdec_mpegts.c @@ -0,0 +1,106 @@ +/* + * RTP MPEG2TS depacketizer + * Copyright (c) 2003 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "mpegts.h" +#include "rtpdec_formats.h" + +struct PayloadContext { + struct MpegTSContext *ts; + int read_buf_index; + int read_buf_size; + uint8_t buf[RTP_MAX_PACKET_LENGTH]; +}; + +static PayloadContext *mpegts_new_context(void) +{ + return av_mallocz(sizeof(PayloadContext)); +} + +static void mpegts_free_context(PayloadContext *data) +{ + if (!data) + return; + if (data->ts) + ff_mpegts_parse_close(data->ts); + av_free(data); +} + +static int mpegts_init(AVFormatContext *ctx, int st_index, PayloadContext *data) +{ + data->ts = ff_mpegts_parse_open(ctx); + if (!data->ts) + return AVERROR(ENOMEM); + return 0; +} + +static int mpegts_handle_packet(AVFormatContext *ctx, PayloadContext *data, + AVStream *st, AVPacket *pkt, uint32_t *timestamp, + const uint8_t *buf, int len, uint16_t seq, + int flags) +{ + int ret; + + // We don't want to use the RTP timestamps at all. If the mpegts demuxer + // doesn't set any pts/dts, the generic rtpdec code shouldn't try to + // fill it in either, since the mpegts and RTP timestamps are in totally + // different ranges. + *timestamp = RTP_NOTS_VALUE; + + if (!data->ts) + return AVERROR(EINVAL); + + if (!buf) { + if (data->read_buf_index >= data->read_buf_size) + return AVERROR(EAGAIN); + ret = ff_mpegts_parse_packet(data->ts, pkt, data->buf + data->read_buf_index, + data->read_buf_size - data->read_buf_index); + if (ret < 0) + return AVERROR(EAGAIN); + data->read_buf_index += ret; + if (data->read_buf_index < data->read_buf_size) + return 1; + else + return 0; + } + + ret = ff_mpegts_parse_packet(data->ts, pkt, buf, len); + /* The only error that can be returned from ff_mpegts_parse_packet + * is "no more data to return from the provided buffer", so return + * AVERROR(EAGAIN) for all errors */ + if (ret < 0) + return AVERROR(EAGAIN); + if (ret < len) { + data->read_buf_size = FFMIN(len - ret, sizeof(data->buf)); + memcpy(data->buf, buf + ret, data->read_buf_size); + data->read_buf_index = 0; + return 1; + } + return 0; +} + +RTPDynamicProtocolHandler ff_mpegts_dynamic_handler = { + .codec_type = AVMEDIA_TYPE_DATA, + .parse_packet = mpegts_handle_packet, + .alloc = mpegts_new_context, + .init = mpegts_init, + .free = mpegts_free_context, + .static_payload_id = 33, +}; |