mirror of https://github.com/FFmpeg/FFmpeg.git
* commit '2326558d5277ec87ba6d607a01ec6acfc51c694c': rtpdec: Split mpegts parsing to a normal depacketizer rtpdec: Reorder payload handler registration alphabetically Merged-by: Michael Niedermayer <michaelni@gmx.at>pull/11/head
Michael Niedermayer
12 years ago
commit
950482bf58
6 changed files with 146 additions and 73 deletions
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/*
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* RTP MPEG2TS depacketizer |
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* Copyright (c) 2003 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "mpegts.h" |
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#include "rtpdec_formats.h" |
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struct PayloadContext { |
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struct MpegTSContext *ts; |
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int read_buf_index; |
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int read_buf_size; |
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uint8_t buf[RTP_MAX_PACKET_LENGTH]; |
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}; |
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static PayloadContext *mpegts_new_context(void) |
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{ |
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return av_mallocz(sizeof(PayloadContext)); |
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} |
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static void mpegts_free_context(PayloadContext *data) |
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{ |
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if (!data) |
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return; |
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if (data->ts) |
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ff_mpegts_parse_close(data->ts); |
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av_free(data); |
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} |
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static int mpegts_init(AVFormatContext *ctx, int st_index, PayloadContext *data) |
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{ |
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data->ts = ff_mpegts_parse_open(ctx); |
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if (!data->ts) |
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return AVERROR(ENOMEM); |
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return 0; |
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} |
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static int mpegts_handle_packet(AVFormatContext *ctx, PayloadContext *data, |
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AVStream *st, AVPacket *pkt, uint32_t *timestamp, |
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const uint8_t *buf, int len, uint16_t seq, |
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int flags) |
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{ |
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int ret; |
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// We don't want to use the RTP timestamps at all. If the mpegts demuxer
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// doesn't set any pts/dts, the generic rtpdec code shouldn't try to
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// fill it in either, since the mpegts and RTP timestamps are in totally
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// different ranges.
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*timestamp = RTP_NOTS_VALUE; |
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if (!data->ts) |
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return AVERROR(EINVAL); |
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if (!buf) { |
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if (data->read_buf_index >= data->read_buf_size) |
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return AVERROR(EAGAIN); |
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ret = ff_mpegts_parse_packet(data->ts, pkt, data->buf + data->read_buf_index, |
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data->read_buf_size - data->read_buf_index); |
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if (ret < 0) |
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return AVERROR(EAGAIN); |
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data->read_buf_index += ret; |
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if (data->read_buf_index < data->read_buf_size) |
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return 1; |
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else |
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return 0; |
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} |
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ret = ff_mpegts_parse_packet(data->ts, pkt, buf, len); |
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/* The only error that can be returned from ff_mpegts_parse_packet
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* is "no more data to return from the provided buffer", so return |
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* AVERROR(EAGAIN) for all errors */ |
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if (ret < 0) |
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return AVERROR(EAGAIN); |
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if (ret < len) { |
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data->read_buf_size = FFMIN(len - ret, sizeof(data->buf)); |
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memcpy(data->buf, buf + ret, data->read_buf_size); |
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data->read_buf_index = 0; |
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return 1; |
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} |
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return 0; |
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} |
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RTPDynamicProtocolHandler ff_mpegts_dynamic_handler = { |
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.codec_type = AVMEDIA_TYPE_DATA, |
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.parse_packet = mpegts_handle_packet, |
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.alloc = mpegts_new_context, |
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.init = mpegts_init, |
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.free = mpegts_free_context, |
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.static_payload_id = 33, |
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}; |
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