* RTP input/output format
* Copyright (c) 2002 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
+#include "mpegts.h"
+#include "bitstream.h"
#include <unistd.h>
#include <sys/types.h>
buffer to 'rtp_write_packet' contains all the packets for ONE
frame. Each packet should have a four byte header containing
the length in big endian format (same trick as
- 'url_open_dyn_packet_buf')
+ 'url_open_dyn_packet_buf')
*/
-#define RTP_VERSION 2
-
-#define RTP_MAX_SDES 256 /* maximum text length for SDES */
-
-/* RTCP paquets use 0.5 % of the bandwidth */
-#define RTCP_TX_RATIO_NUM 5
-#define RTCP_TX_RATIO_DEN 1000
-
-typedef enum {
- RTCP_SR = 200,
- RTCP_RR = 201,
- RTCP_SDES = 202,
- RTCP_BYE = 203,
- RTCP_APP = 204
-} rtcp_type_t;
-
-typedef enum {
- RTCP_SDES_END = 0,
- RTCP_SDES_CNAME = 1,
- RTCP_SDES_NAME = 2,
- RTCP_SDES_EMAIL = 3,
- RTCP_SDES_PHONE = 4,
- RTCP_SDES_LOC = 5,
- RTCP_SDES_TOOL = 6,
- RTCP_SDES_NOTE = 7,
- RTCP_SDES_PRIV = 8,
- RTCP_SDES_IMG = 9,
- RTCP_SDES_DOOR = 10,
- RTCP_SDES_SOURCE = 11
-} rtcp_sdes_type_t;
-
-enum RTPPayloadType {
- RTP_PT_ULAW = 0,
- RTP_PT_GSM = 3,
- RTP_PT_G723 = 4,
- RTP_PT_ALAW = 8,
- RTP_PT_S16BE_STEREO = 10,
- RTP_PT_S16BE_MONO = 11,
- RTP_PT_MPEGAUDIO = 14,
- RTP_PT_JPEG = 26,
- RTP_PT_H261 = 31,
- RTP_PT_MPEGVIDEO = 32,
- RTP_PT_MPEG2TS = 33,
- RTP_PT_H263 = 34, /* old H263 encapsulation */
- RTP_PT_PRIVATE = 96,
+/* from http://www.iana.org/assignments/rtp-parameters last updated 05 January 2005 */
+AVRtpPayloadType_t AVRtpPayloadTypes[]=
+{
+ {0, "PCMU", CODEC_TYPE_AUDIO, CODEC_ID_PCM_MULAW, 8000, 1},
+ {1, "Reserved", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {2, "Reserved", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {3, "GSM", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {4, "G723", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {5, "DVI4", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {6, "DVI4", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 16000, 1},
+ {7, "LPC", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {8, "PCMA", CODEC_TYPE_AUDIO, CODEC_ID_PCM_ALAW, 8000, 1},
+ {9, "G722", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {10, "L16", CODEC_TYPE_AUDIO, CODEC_ID_PCM_S16BE, 44100, 2},
+ {11, "L16", CODEC_TYPE_AUDIO, CODEC_ID_PCM_S16BE, 44100, 1},
+ {12, "QCELP", CODEC_TYPE_AUDIO, CODEC_ID_QCELP, 8000, 1},
+ {13, "CN", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {14, "MPA", CODEC_TYPE_AUDIO, CODEC_ID_MP2, 90000, -1},
+ {15, "G728", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {16, "DVI4", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 11025, 1},
+ {17, "DVI4", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 22050, 1},
+ {18, "G729", CODEC_TYPE_AUDIO, CODEC_ID_NONE, 8000, 1},
+ {19, "reserved", CODEC_TYPE_AUDIO, CODEC_ID_NONE, -1, -1},
+ {20, "unassigned", CODEC_TYPE_AUDIO, CODEC_ID_NONE, -1, -1},
+ {21, "unassigned", CODEC_TYPE_AUDIO, CODEC_ID_NONE, -1, -1},
+ {22, "unassigned", CODEC_TYPE_AUDIO, CODEC_ID_NONE, -1, -1},
+ {23, "unassigned", CODEC_TYPE_AUDIO, CODEC_ID_NONE, -1, -1},
+ {24, "unassigned", CODEC_TYPE_VIDEO, CODEC_ID_NONE, -1, -1},
+ {25, "CelB", CODEC_TYPE_VIDEO, CODEC_ID_NONE, 90000, -1},
+ {26, "JPEG", CODEC_TYPE_VIDEO, CODEC_ID_MJPEG, 90000, -1},
+ {27, "unassigned", CODEC_TYPE_VIDEO, CODEC_ID_NONE, -1, -1},
+ {28, "nv", CODEC_TYPE_VIDEO, CODEC_ID_NONE, 90000, -1},
+ {29, "unassigned", CODEC_TYPE_VIDEO, CODEC_ID_NONE, -1, -1},
+ {30, "unassigned", CODEC_TYPE_VIDEO, CODEC_ID_NONE, -1, -1},
+ {31, "H261", CODEC_TYPE_VIDEO, CODEC_ID_H261, 90000, -1},
+ {32, "MPV", CODEC_TYPE_VIDEO, CODEC_ID_MPEG1VIDEO, 90000, -1},
+ {33, "MP2T", CODEC_TYPE_DATA, CODEC_ID_MPEG2TS, 90000, -1},
+ {34, "H263", CODEC_TYPE_VIDEO, CODEC_ID_H263, 90000, -1},
+ {35, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {36, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {37, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {38, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {39, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {40, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {41, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {42, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {43, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {44, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {45, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {46, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {47, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {48, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {49, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {50, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {51, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {52, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {53, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {54, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {55, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {56, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {57, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {58, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {59, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {60, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {61, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {62, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {63, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {64, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {65, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {66, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {67, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {68, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {69, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {70, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {71, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {72, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {73, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {74, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {75, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {76, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {77, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {78, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {79, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {80, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {81, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {82, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {83, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {84, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {85, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {86, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {87, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {88, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {89, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {90, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {91, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {92, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {93, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {94, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {95, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {96, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {97, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {98, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {99, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {100, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {101, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {102, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {103, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {104, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {105, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {106, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {107, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {108, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {109, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {110, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {111, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {112, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {113, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {114, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {115, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {116, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {117, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {118, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {119, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {120, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {121, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {122, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {123, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {124, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {125, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {126, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {127, "dynamic", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+ {-1, "", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1}
+};
+
+AVRtpDynamicPayloadType_t AVRtpDynamicPayloadTypes[]=
+{
+ {"MP4V-ES", CODEC_TYPE_VIDEO, CODEC_ID_MPEG4},
+ {"mpeg4-generic", CODEC_TYPE_AUDIO, CODEC_ID_MPEG4AAC},
+ {"", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE}
};
-typedef struct RTPContext {
+struct RTPDemuxContext {
+ AVFormatContext *ic;
+ AVStream *st;
int payload_type;
uint32_t ssrc;
uint16_t seq;
uint32_t base_timestamp;
uint32_t cur_timestamp;
int max_payload_size;
+ MpegTSContext *ts; /* only used for MP2T payloads */
+ int read_buf_index;
+ int read_buf_size;
+
/* rtcp sender statistics receive */
int64_t last_rtcp_ntp_time;
+ int64_t first_rtcp_ntp_time;
uint32_t last_rtcp_timestamp;
/* rtcp sender statistics */
unsigned int packet_count;
/* buffer for output */
uint8_t buf[RTP_MAX_PACKET_LENGTH];
uint8_t *buf_ptr;
-} RTPContext;
+ /* special infos for au headers parsing */
+ rtp_payload_data_t *rtp_payload_data;
+};
int rtp_get_codec_info(AVCodecContext *codec, int payload_type)
{
- switch(payload_type) {
- case RTP_PT_ULAW:
- codec->codec_id = CODEC_ID_PCM_MULAW;
- codec->channels = 1;
- codec->sample_rate = 8000;
- break;
- case RTP_PT_ALAW:
- codec->codec_id = CODEC_ID_PCM_ALAW;
- codec->channels = 1;
- codec->sample_rate = 8000;
- break;
- case RTP_PT_S16BE_STEREO:
- codec->codec_id = CODEC_ID_PCM_S16BE;
- codec->channels = 2;
- codec->sample_rate = 44100;
- break;
- case RTP_PT_S16BE_MONO:
- codec->codec_id = CODEC_ID_PCM_S16BE;
- codec->channels = 1;
- codec->sample_rate = 44100;
- break;
- case RTP_PT_MPEGAUDIO:
- codec->codec_id = CODEC_ID_MP2;
- break;
- case RTP_PT_JPEG:
- codec->codec_id = CODEC_ID_MJPEG;
- break;
- case RTP_PT_MPEGVIDEO:
- codec->codec_id = CODEC_ID_MPEG1VIDEO;
- break;
- default:
- return -1;
+ if (AVRtpPayloadTypes[payload_type].codec_id != CODEC_ID_NONE) {
+ codec->codec_type = AVRtpPayloadTypes[payload_type].codec_type;
+ codec->codec_id = AVRtpPayloadTypes[payload_type].codec_id;
+ if (AVRtpPayloadTypes[payload_type].audio_channels > 0)
+ codec->channels = AVRtpPayloadTypes[payload_type].audio_channels;
+ if (AVRtpPayloadTypes[payload_type].clock_rate > 0)
+ codec->sample_rate = AVRtpPayloadTypes[payload_type].clock_rate;
+ return 0;
}
- return 0;
+ return -1;
}
/* return < 0 if unknown payload type */
int rtp_get_payload_type(AVCodecContext *codec)
{
- int payload_type;
+ int i, payload_type;
/* compute the payload type */
- payload_type = -1;
- switch(codec->codec_id) {
- case CODEC_ID_PCM_MULAW:
- payload_type = RTP_PT_ULAW;
- break;
- case CODEC_ID_PCM_ALAW:
- payload_type = RTP_PT_ALAW;
- break;
- case CODEC_ID_PCM_S16BE:
- if (codec->channels == 1) {
- payload_type = RTP_PT_S16BE_MONO;
- } else if (codec->channels == 2) {
- payload_type = RTP_PT_S16BE_STEREO;
+ for (payload_type = -1, i = 0; AVRtpPayloadTypes[i].pt >= 0; ++i)
+ if (AVRtpPayloadTypes[i].codec_id == codec->codec_id) {
+ if (codec->codec_id == CODEC_ID_PCM_S16BE)
+ if (codec->channels != AVRtpPayloadTypes[i].audio_channels)
+ continue;
+ payload_type = AVRtpPayloadTypes[i].pt;
}
- break;
- case CODEC_ID_MP2:
- case CODEC_ID_MP3LAME:
- payload_type = RTP_PT_MPEGAUDIO;
- break;
- case CODEC_ID_MJPEG:
- payload_type = RTP_PT_JPEG;
- break;
- case CODEC_ID_MPEG1VIDEO:
- payload_type = RTP_PT_MPEGVIDEO;
- break;
- default:
- break;
- }
return payload_type;
}
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
}
-static inline uint32_t decode_be64(const uint8_t *p)
+static inline uint64_t decode_be64(const uint8_t *p)
{
return ((uint64_t)decode_be32(p) << 32) | decode_be32(p + 4);
}
-static int rtcp_parse_packet(AVFormatContext *s1, const unsigned char *buf, int len)
+static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)
{
- RTPContext *s = s1->priv_data;
-
if (buf[1] != 200)
return -1;
s->last_rtcp_ntp_time = decode_be64(buf + 8);
+ if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE)
+ s->first_rtcp_ntp_time = s->last_rtcp_ntp_time;
s->last_rtcp_timestamp = decode_be32(buf + 16);
return 0;
}
/**
- * Parse an RTP packet directly sent as raw data. Can only be used if
- * 'raw' is given as input file
- * @param s1 media file context
+ * open a new RTP parse context for stream 'st'. 'st' can be NULL for
+ * MPEG2TS streams to indicate that they should be demuxed inside the
+ * rtp demux (otherwise CODEC_ID_MPEG2TS packets are returned)
+ */
+RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type, rtp_payload_data_t *rtp_payload_data)
+{
+ RTPDemuxContext *s;
+
+ s = av_mallocz(sizeof(RTPDemuxContext));
+ if (!s)
+ return NULL;
+ s->payload_type = payload_type;
+ s->last_rtcp_ntp_time = AV_NOPTS_VALUE;
+ s->first_rtcp_ntp_time = AV_NOPTS_VALUE;
+ s->ic = s1;
+ s->st = st;
+ s->rtp_payload_data = rtp_payload_data;
+ if (!strcmp(AVRtpPayloadTypes[payload_type].enc_name, "MP2T")) {
+ s->ts = mpegts_parse_open(s->ic);
+ if (s->ts == NULL) {
+ av_free(s);
+ return NULL;
+ }
+ } else {
+ switch(st->codec->codec_id) {
+ case CODEC_ID_MPEG1VIDEO:
+ case CODEC_ID_MPEG2VIDEO:
+ case CODEC_ID_MP2:
+ case CODEC_ID_MP3:
+ case CODEC_ID_MPEG4:
+ st->need_parsing = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ return s;
+}
+
+static int rtp_parse_mp4_au(RTPDemuxContext *s, const uint8_t *buf)
+{
+ int au_headers_length, au_header_size, i;
+ GetBitContext getbitcontext;
+ rtp_payload_data_t *infos;
+
+ infos = s->rtp_payload_data;
+
+ if (infos == NULL)
+ return -1;
+
+ /* decode the first 2 bytes where are stored the AUHeader sections
+ length in bits */
+ au_headers_length = BE_16(buf);
+
+ if (au_headers_length > RTP_MAX_PACKET_LENGTH)
+ return -1;
+
+ infos->au_headers_length_bytes = (au_headers_length + 7) / 8;
+
+ /* skip AU headers length section (2 bytes) */
+ buf += 2;
+
+ init_get_bits(&getbitcontext, buf, infos->au_headers_length_bytes * 8);
+
+ /* XXX: Wrong if optionnal additional sections are present (cts, dts etc...) */
+ au_header_size = infos->sizelength + infos->indexlength;
+ if (au_header_size <= 0 || (au_headers_length % au_header_size != 0))
+ return -1;
+
+ infos->nb_au_headers = au_headers_length / au_header_size;
+ infos->au_headers = av_malloc(sizeof(struct AUHeaders) * infos->nb_au_headers);
+
+ /* XXX: We handle multiple AU Section as only one (need to fix this for interleaving)
+ In my test, the faad decoder doesnt behave correctly when sending each AU one by one
+ but does when sending the whole as one big packet... */
+ infos->au_headers[0].size = 0;
+ infos->au_headers[0].index = 0;
+ for (i = 0; i < infos->nb_au_headers; ++i) {
+ infos->au_headers[0].size += get_bits_long(&getbitcontext, infos->sizelength);
+ infos->au_headers[0].index = get_bits_long(&getbitcontext, infos->indexlength);
+ }
+
+ infos->nb_au_headers = 1;
+
+ return 0;
+}
+
+/**
+ * Parse an RTP or RTCP packet directly sent as a buffer.
+ * @param s RTP parse context.
* @param pkt returned packet
- * @param buf input buffer
+ * @param buf input buffer or NULL to read the next packets
* @param len buffer len
- * @return zero if no error.
+ * @return 0 if a packet is returned, 1 if a packet is returned and more can follow
+ * (use buf as NULL to read the next). -1 if no packet (error or no more packet).
*/
-int rtp_parse_packet(AVFormatContext *s1, AVPacket *pkt,
- const unsigned char *buf, int len)
+int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
+ const uint8_t *buf, int len)
{
- RTPContext *s = s1->priv_data;
unsigned int ssrc, h;
- int payload_type, seq, delta_timestamp;
+ int payload_type, seq, delta_timestamp, ret;
AVStream *st;
uint32_t timestamp;
-
+
+ if (!buf) {
+ /* return the next packets, if any */
+ if (s->read_buf_index >= s->read_buf_size)
+ return -1;
+ ret = mpegts_parse_packet(s->ts, pkt, s->buf + s->read_buf_index,
+ s->read_buf_size - s->read_buf_index);
+ if (ret < 0)
+ return -1;
+ s->read_buf_index += ret;
+ if (s->read_buf_index < s->read_buf_size)
+ return 1;
+ else
+ return 0;
+ }
+
if (len < 12)
return -1;
if ((buf[0] & 0xc0) != (RTP_VERSION << 6))
return -1;
if (buf[1] >= 200 && buf[1] <= 204) {
- rtcp_parse_packet(s1, buf, len);
+ rtcp_parse_packet(s, buf, len);
return -1;
}
payload_type = buf[1] & 0x7f;
seq = (buf[2] << 8) | buf[3];
timestamp = decode_be32(buf + 4);
ssrc = decode_be32(buf + 8);
-
- if (s->payload_type < 0) {
- s->payload_type = payload_type;
-
- if (payload_type == RTP_PT_MPEG2TS) {
- /* XXX: special case : not a single codec but a whole stream */
- return -1;
- } else {
- st = av_new_stream(s1, 0);
- if (!st)
- return -1;
- rtp_get_codec_info(&st->codec, payload_type);
- }
- }
/* NOTE: we can handle only one payload type */
if (s->payload_type != payload_type)
return -1;
+
+ st = s->st;
#if defined(DEBUG) || 1
if (seq != ((s->seq + 1) & 0xffff)) {
- printf("RTP: PT=%02x: bad cseq %04x expected=%04x\n",
+ av_log(st?st->codec:NULL, AV_LOG_ERROR, "RTP: PT=%02x: bad cseq %04x expected=%04x\n",
payload_type, seq, ((s->seq + 1) & 0xffff));
}
- s->seq = seq;
#endif
+ s->seq = seq;
len -= 12;
buf += 12;
- st = s1->streams[0];
- switch(st->codec.codec_id) {
- case CODEC_ID_MP2:
- /* better than nothing: skip mpeg audio RTP header */
- if (len <= 4)
- return -1;
- h = decode_be32(buf);
- len -= 4;
- buf += 4;
- av_new_packet(pkt, len);
- memcpy(pkt->data, buf, len);
- break;
- case CODEC_ID_MPEG1VIDEO:
- /* better than nothing: skip mpeg audio RTP header */
- if (len <= 4)
+
+ if (!st) {
+ /* specific MPEG2TS demux support */
+ ret = mpegts_parse_packet(s->ts, pkt, buf, len);
+ if (ret < 0)
return -1;
- h = decode_be32(buf);
- buf += 4;
- len -= 4;
- if (h & (1 << 26)) {
- /* mpeg2 */
+ if (ret < len) {
+ s->read_buf_size = len - ret;
+ memcpy(s->buf, buf + ret, s->read_buf_size);
+ s->read_buf_index = 0;
+ return 1;
+ }
+ } else {
+ switch(st->codec->codec_id) {
+ case CODEC_ID_MP2:
+ /* better than nothing: skip mpeg audio RTP header */
if (len <= 4)
return -1;
+ h = decode_be32(buf);
+ len -= 4;
+ buf += 4;
+ av_new_packet(pkt, len);
+ memcpy(pkt->data, buf, len);
+ break;
+ case CODEC_ID_MPEG1VIDEO:
+ /* better than nothing: skip mpeg video RTP header */
+ if (len <= 4)
+ return -1;
+ h = decode_be32(buf);
buf += 4;
len -= 4;
+ if (h & (1 << 26)) {
+ /* mpeg2 */
+ if (len <= 4)
+ return -1;
+ buf += 4;
+ len -= 4;
+ }
+ av_new_packet(pkt, len);
+ memcpy(pkt->data, buf, len);
+ break;
+ default:
+ av_new_packet(pkt, len);
+ memcpy(pkt->data, buf, len);
+ break;
}
- av_new_packet(pkt, len);
- memcpy(pkt->data, buf, len);
- break;
- default:
- av_new_packet(pkt, len);
- memcpy(pkt->data, buf, len);
- break;
- }
- if (s->last_rtcp_ntp_time != AV_NOPTS_VALUE) {
- /* compute pts from timestamp with received ntp_time */
- delta_timestamp = timestamp - s->last_rtcp_timestamp;
- /* XXX: do conversion, but not needed for mpeg at 90 KhZ */
- pkt->pts = s->last_rtcp_ntp_time + delta_timestamp;
- }
- return 0;
-}
-
-static int rtp_read_header(AVFormatContext *s1,
- AVFormatParameters *ap)
-{
- RTPContext *s = s1->priv_data;
- s->payload_type = -1;
- s->last_rtcp_ntp_time = AV_NOPTS_VALUE;
- return 0;
-}
-
-static int rtp_read_packet(AVFormatContext *s1, AVPacket *pkt)
-{
- char buf[RTP_MAX_PACKET_LENGTH];
- int ret;
-
- /* XXX: needs a better API for packet handling ? */
- for(;;) {
- ret = url_read(url_fileno(&s1->pb), buf, sizeof(buf));
- if (ret < 0)
- return AVERROR_IO;
- if (rtp_parse_packet(s1, pkt, buf, ret) == 0)
+ switch(st->codec->codec_id) {
+ case CODEC_ID_MP2:
+ case CODEC_ID_MPEG1VIDEO:
+ if (s->last_rtcp_ntp_time != AV_NOPTS_VALUE) {
+ int64_t addend;
+ /* XXX: is it really necessary to unify the timestamp base ? */
+ /* compute pts from timestamp with received ntp_time */
+ delta_timestamp = timestamp - s->last_rtcp_timestamp;
+ /* convert to 90 kHz without overflow */
+ addend = (s->last_rtcp_ntp_time - s->first_rtcp_ntp_time) >> 14;
+ addend = (addend * 5625) >> 14;
+ pkt->pts = addend + delta_timestamp;
+ }
break;
+ case CODEC_ID_MPEG4:
+ pkt->pts = timestamp;
+ break;
+ case CODEC_ID_MPEG4AAC:
+ if (rtp_parse_mp4_au(s, buf))
+ return -1;
+ {
+ rtp_payload_data_t *infos = s->rtp_payload_data;
+ if (infos == NULL)
+ return -1;
+ buf += infos->au_headers_length_bytes + 2;
+ len -= infos->au_headers_length_bytes + 2;
+
+ /* XXX: Fixme we only handle the case where rtp_parse_mp4_au define
+ one au_header */
+ av_new_packet(pkt, infos->au_headers[0].size);
+ memcpy(pkt->data, buf, infos->au_headers[0].size);
+ buf += infos->au_headers[0].size;
+ len -= infos->au_headers[0].size;
+ }
+ s->read_buf_size = len;
+ s->buf_ptr = buf;
+ pkt->stream_index = s->st->index;
+ return 0;
+ default:
+ /* no timestamp info yet */
+ break;
+ }
+ pkt->stream_index = s->st->index;
}
return 0;
}
-static int rtp_read_close(AVFormatContext *s1)
-{
- // RTPContext *s = s1->priv_data;
- return 0;
-}
-
-static int rtp_probe(AVProbeData *p)
+void rtp_parse_close(RTPDemuxContext *s)
{
- if (strstart(p->filename, "rtp://", NULL))
- return AVPROBE_SCORE_MAX;
- return 0;
+ if (!strcmp(AVRtpPayloadTypes[s->payload_type].enc_name, "MP2T")) {
+ mpegts_parse_close(s->ts);
+ }
+ av_free(s);
}
/* rtp output */
static int rtp_write_header(AVFormatContext *s1)
{
- RTPContext *s = s1->priv_data;
- int payload_type, max_packet_size;
+ RTPDemuxContext *s = s1->priv_data;
+ int payload_type, max_packet_size, n;
AVStream *st;
if (s1->nb_streams != 1)
return -1;
st = s1->streams[0];
- payload_type = rtp_get_payload_type(&st->codec);
+ payload_type = rtp_get_payload_type(st->codec);
if (payload_type < 0)
payload_type = RTP_PT_PRIVATE; /* private payload type */
s->payload_type = payload_type;
- s->base_timestamp = random();
+// following 2 FIXMies could be set based on the current time, theres normaly no info leak, as rtp will likely be transmitted immedeatly
+ s->base_timestamp = 0; /* FIXME: was random(), what should this be? */
s->timestamp = s->base_timestamp;
- s->ssrc = random();
+ s->ssrc = 0; /* FIXME: was random(), what should this be? */
s->first_packet = 1;
max_packet_size = url_fget_max_packet_size(&s1->pb);
return AVERROR_IO;
s->max_payload_size = max_packet_size - 12;
- switch(st->codec.codec_id) {
+ switch(st->codec->codec_id) {
case CODEC_ID_MP2:
- case CODEC_ID_MP3LAME:
+ case CODEC_ID_MP3:
s->buf_ptr = s->buf + 4;
s->cur_timestamp = 0;
break;
case CODEC_ID_MPEG1VIDEO:
s->cur_timestamp = 0;
break;
+ case CODEC_ID_MPEG2TS:
+ n = s->max_payload_size / TS_PACKET_SIZE;
+ if (n < 1)
+ n = 1;
+ s->max_payload_size = n * TS_PACKET_SIZE;
+ s->buf_ptr = s->buf;
+ break;
default:
s->buf_ptr = s->buf;
break;
/* send an rtcp sender report packet */
static void rtcp_send_sr(AVFormatContext *s1, int64_t ntp_time)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
#if defined(DEBUG)
printf("RTCP: %02x %Lx %x\n", s->payload_type, ntp_time, s->timestamp);
#endif
/* send an rtp packet. sequence number is incremented, but the caller
must update the timestamp itself */
-static void rtp_send_data(AVFormatContext *s1, uint8_t *buf1, int len)
+static void rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
#ifdef DEBUG
printf("rtp_send_data size=%d\n", len);
/* build the RTP header */
put_byte(&s1->pb, (RTP_VERSION << 6));
- put_byte(&s1->pb, s->payload_type & 0x7f);
+ put_byte(&s1->pb, (s->payload_type & 0x7f) | ((m & 0x01) << 7));
put_be16(&s1->pb, s->seq);
put_be32(&s1->pb, s->timestamp);
put_be32(&s1->pb, s->ssrc);
-
+
put_buffer(&s1->pb, buf1, len);
put_flush_packet(&s1->pb);
-
+
s->seq++;
s->octet_count += len;
s->packet_count++;
/* send an integer number of samples and compute time stamp and fill
the rtp send buffer before sending. */
static void rtp_send_samples(AVFormatContext *s1,
- uint8_t *buf1, int size, int sample_size)
+ const uint8_t *buf1, int size, int sample_size)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
int len, max_packet_size, n;
max_packet_size = (s->max_payload_size / sample_size) * sample_size;
n = (s->buf_ptr - s->buf);
/* if buffer full, then send it */
if (n >= max_packet_size) {
- rtp_send_data(s1, s->buf, n);
+ rtp_send_data(s1, s->buf, n, 0);
s->buf_ptr = s->buf;
/* update timestamp */
s->timestamp += n / sample_size;
}
}
-}
+}
/* NOTE: we suppose that exactly one frame is given as argument here */
/* XXX: test it */
static void rtp_send_mpegaudio(AVFormatContext *s1,
- uint8_t *buf1, int size)
+ const uint8_t *buf1, int size)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
AVStream *st = s1->streams[0];
int len, count, max_packet_size;
len = (s->buf_ptr - s->buf);
if ((len + size) > max_packet_size) {
if (len > 4) {
- rtp_send_data(s1, s->buf, s->buf_ptr - s->buf);
+ rtp_send_data(s1, s->buf, s->buf_ptr - s->buf, 0);
s->buf_ptr = s->buf + 4;
/* 90 KHz time stamp */
- s->timestamp = s->base_timestamp +
- (s->cur_timestamp * 90000LL) / st->codec.sample_rate;
+ s->timestamp = s->base_timestamp +
+ (s->cur_timestamp * 90000LL) / st->codec->sample_rate;
}
}
s->buf[2] = count >> 8;
s->buf[3] = count;
memcpy(s->buf + 4, buf1, len);
- rtp_send_data(s1, s->buf, len + 4);
+ rtp_send_data(s1, s->buf, len + 4, 0);
size -= len;
buf1 += len;
count += len;
memcpy(s->buf_ptr, buf1, size);
s->buf_ptr += size;
}
- s->cur_timestamp += st->codec.frame_size;
+ s->cur_timestamp += st->codec->frame_size;
}
/* NOTE: a single frame must be passed with sequence header if
needed. XXX: use slices. */
static void rtp_send_mpegvideo(AVFormatContext *s1,
- uint8_t *buf1, int size)
+ const uint8_t *buf1, int size)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
AVStream *st = s1->streams[0];
int len, h, max_packet_size;
uint8_t *q;
while (size > 0) {
/* XXX: more correct headers */
h = 0;
- if (st->codec.sub_id == 2)
+ if (st->codec->sub_id == 2)
h |= 1 << 26; /* mpeg 2 indicator */
q = s->buf;
*q++ = h >> 24;
*q++ = h >> 8;
*q++ = h;
- if (st->codec.sub_id == 2) {
+ if (st->codec->sub_id == 2) {
h = 0;
*q++ = h >> 24;
*q++ = h >> 16;
*q++ = h >> 8;
*q++ = h;
}
-
+
len = max_packet_size - (q - s->buf);
if (len > size)
len = size;
q += len;
/* 90 KHz time stamp */
- s->timestamp = s->base_timestamp +
- av_rescale((int64_t)s->cur_timestamp * st->codec.frame_rate_base, 90000, st->codec.frame_rate);
- rtp_send_data(s1, s->buf, q - s->buf);
+ s->timestamp = s->base_timestamp +
+ av_rescale((int64_t)s->cur_timestamp * st->codec->time_base.num, 90000, st->codec->time_base.den); //FIXME pass timestamps
+ rtp_send_data(s1, s->buf, q - s->buf, (len == size));
buf1 += len;
size -= len;
}
static void rtp_send_raw(AVFormatContext *s1,
- uint8_t *buf1, int size)
+ const uint8_t *buf1, int size)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
AVStream *st = s1->streams[0];
int len, max_packet_size;
len = size;
/* 90 KHz time stamp */
- s->timestamp = s->base_timestamp +
- av_rescale((int64_t)s->cur_timestamp * st->codec.frame_rate_base, 90000, st->codec.frame_rate);
- rtp_send_data(s1, buf1, len);
+ s->timestamp = s->base_timestamp +
+ av_rescale((int64_t)s->cur_timestamp * st->codec->time_base.num, 90000, st->codec->time_base.den); //FIXME pass timestamps
+ rtp_send_data(s1, buf1, len, (len == size));
buf1 += len;
size -= len;
s->cur_timestamp++;
}
+/* NOTE: size is assumed to be an integer multiple of TS_PACKET_SIZE */
+static void rtp_send_mpegts_raw(AVFormatContext *s1,
+ const uint8_t *buf1, int size)
+{
+ RTPDemuxContext *s = s1->priv_data;
+ int len, out_len;
+
+ while (size >= TS_PACKET_SIZE) {
+ len = s->max_payload_size - (s->buf_ptr - s->buf);
+ if (len > size)
+ len = size;
+ memcpy(s->buf_ptr, buf1, len);
+ buf1 += len;
+ size -= len;
+ s->buf_ptr += len;
+
+ out_len = s->buf_ptr - s->buf;
+ if (out_len >= s->max_payload_size) {
+ rtp_send_data(s1, s->buf, out_len, 0);
+ s->buf_ptr = s->buf;
+ }
+ }
+}
+
/* write an RTP packet. 'buf1' must contain a single specific frame. */
-static int rtp_write_packet(AVFormatContext *s1, int stream_index,
- uint8_t *buf1, int size, int force_pts)
+static int rtp_write_packet(AVFormatContext *s1, AVPacket *pkt)
{
- RTPContext *s = s1->priv_data;
+ RTPDemuxContext *s = s1->priv_data;
AVStream *st = s1->streams[0];
int rtcp_bytes;
int64_t ntp_time;
-
+ int size= pkt->size;
+ uint8_t *buf1= pkt->data;
+
#ifdef DEBUG
- printf("%d: write len=%d\n", stream_index, size);
+ printf("%d: write len=%d\n", pkt->stream_index, size);
#endif
/* XXX: mpeg pts hardcoded. RTCP send every 0.5 seconds */
- rtcp_bytes = ((s->octet_count - s->last_octet_count) * RTCP_TX_RATIO_NUM) /
+ rtcp_bytes = ((s->octet_count - s->last_octet_count) * RTCP_TX_RATIO_NUM) /
RTCP_TX_RATIO_DEN;
if (s->first_packet || rtcp_bytes >= 28) {
/* compute NTP time */
- ntp_time = force_pts; // ((int64_t)force_pts << 28) / 5625
- rtcp_send_sr(s1, ntp_time);
+ /* XXX: 90 kHz timestamp hardcoded */
+ ntp_time = (pkt->pts << 28) / 5625;
+ rtcp_send_sr(s1, ntp_time);
s->last_octet_count = s->octet_count;
s->first_packet = 0;
}
- switch(st->codec.codec_id) {
+ switch(st->codec->codec_id) {
case CODEC_ID_PCM_MULAW:
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_U8:
case CODEC_ID_PCM_S8:
- rtp_send_samples(s1, buf1, size, 1 * st->codec.channels);
+ rtp_send_samples(s1, buf1, size, 1 * st->codec->channels);
break;
case CODEC_ID_PCM_U16BE:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE:
- rtp_send_samples(s1, buf1, size, 2 * st->codec.channels);
+ rtp_send_samples(s1, buf1, size, 2 * st->codec->channels);
break;
case CODEC_ID_MP2:
- case CODEC_ID_MP3LAME:
+ case CODEC_ID_MP3:
rtp_send_mpegaudio(s1, buf1, size);
break;
case CODEC_ID_MPEG1VIDEO:
rtp_send_mpegvideo(s1, buf1, size);
break;
+ case CODEC_ID_MPEG2TS:
+ rtp_send_mpegts_raw(s1, buf1, size);
+ break;
default:
/* better than nothing : send the codec raw data */
rtp_send_raw(s1, buf1, size);
static int rtp_write_trailer(AVFormatContext *s1)
{
- // RTPContext *s = s1->priv_data;
+ // RTPDemuxContext *s = s1->priv_data;
return 0;
}
-AVInputFormat rtp_demux = {
- "rtp",
- "RTP input format",
- sizeof(RTPContext),
- rtp_probe,
- rtp_read_header,
- rtp_read_packet,
- rtp_read_close,
- .flags = AVFMT_NOHEADER,
-};
-
-AVOutputFormat rtp_mux = {
+AVOutputFormat rtp_muxer = {
"rtp",
"RTP output format",
NULL,
NULL,
- sizeof(RTPContext),
+ sizeof(RTPDemuxContext),
CODEC_ID_PCM_MULAW,
CODEC_ID_NONE,
rtp_write_header,
rtp_write_packet,
rtp_write_trailer,
};
-
-int rtp_init(void)
-{
- av_register_output_format(&rtp_mux);
- av_register_input_format(&rtp_demux);
- return 0;
-}
projects / ffmpeg / blobdiff