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mpv/libmpdemux/demux_nemesi.c

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/*
* Copyright (C) 2007 Alessandro Molina <amol.wrk@gmail.com>
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#define HAVE_STRUCT_SOCKADDR_STORAGE
#include "nemesi/rtsp.h"
#include "nemesi/rtp.h"
#include <sched.h>
int rtsp_transport_http = 0;
int rtsp_transport_tcp = 0;
int rtsp_transport_sctp = 0;
int rtsp_port = 0;
typedef struct {
char * mime;
unsigned int fourcc;
} MIMEto4CC;
#define NMS_MAX_FORMATS 16
MIMEto4CC supported_audio[NMS_MAX_FORMATS] = {
{"MPA", 0x55},
{"vorbis", mmioFOURCC('v','r','b','s')},
{"mpeg4-generic", mmioFOURCC('M','P','4','A')},
{NULL, 0},
};
MIMEto4CC supported_video[NMS_MAX_FORMATS] = {
{"MPV", mmioFOURCC('M','P','E','G')},
{"theora",mmioFOURCC('t','h','e','o')},
{"H264", mmioFOURCC('H','2','6','4')},
{"H263-1998", mmioFOURCC('H','2','6','3')},
{"MP4V-ES", mmioFOURCC('M','P','4','V')},
{NULL, 0},
};
typedef enum { NEMESI_SESSION_VIDEO,
NEMESI_SESSION_AUDIO } Nemesi_SessionType;
typedef struct {
rtsp_ctrl * rtsp;
rtp_session * session[2];
rtp_frame first_pkt[2];
double time[2];
double seek;
} Nemesi_DemuxerStreamData;
#define STYPE_TO_DS(demuxer, stype) \
((stype) == NEMESI_SESSION_VIDEO ? (demuxer)->video : (demuxer)->audio)
#define DS_TO_STYPE(demuxer, ds) \
((ds) == (demuxer)->video ? NEMESI_SESSION_VIDEO : NEMESI_SESSION_AUDIO)
#define INVERT_STYPE(stype) ((stype + 1) % 2)
static unsigned int get4CC(MIMEto4CC * supported_formats, char const * format)
{
unsigned i;
for(i = 0; i < NMS_MAX_FORMATS; ++i) {
if (!supported_formats[i].mime)
return 0;
else if ( strcmp(supported_formats[i].mime, format) == 0 )
return supported_formats[i].fourcc;
}
return 0;
}
static rtp_ssrc *wait_for_packets(Nemesi_DemuxerStreamData * ndsd, Nemesi_SessionType stype)
{
rtp_ssrc *ssrc = NULL;
/* Wait for prebuffering (prebuffering must be enabled in nemesi) */
int terminated = rtp_fill_buffers(rtsp_get_rtp_th(ndsd->rtsp));
/* Wait for the ssrc to be registered, if prebuffering is on in nemesi
this will just get immediatly the correct ssrc */
if (!terminated) {
while ( !(ssrc = rtp_session_get_ssrc(ndsd->session[stype], ndsd->rtsp)) )
sched_yield();
}
return ssrc;
}
static void link_session_and_fetch_conf(Nemesi_DemuxerStreamData * ndsd,
Nemesi_SessionType stype,
rtp_session * sess,
rtp_buff * buff, unsigned int * fps)
{
extern double force_fps;
rtp_ssrc *ssrc = NULL;
rtp_frame * fr = &ndsd->first_pkt[stype];
rtp_buff trash_buff;
int must_prefetch = ((fps != NULL) || (buff != NULL)) ? 1 : 0;
ndsd->session[stype] = sess;
ssrc = wait_for_packets(ndsd, stype);
if ( ((ssrc) && (must_prefetch)) ) {
if (buff == NULL)
buff = &trash_buff;
rtp_fill_buffer(ssrc, fr, buff); //Prefetch the first packet
/* Packet prefecthing must be done anyway or we won't be
able to get the metadata, but fps calculation happens
only if the user didn't specify the FPS */
if ( ((!force_fps) && (fps != NULL)) ) {
while ( *fps <= 0 ) {
//Wait more pkts to calculate FPS and try again
sched_yield();
*fps = rtp_get_fps(ssrc);
}
}
}
}
static demuxer_t* demux_open_rtp(demuxer_t* demuxer)
{
nms_rtsp_hints hints;
char * url = demuxer->stream->streaming_ctrl->url->url;
rtsp_ctrl * ctl;
RTSP_Error reply;
rtsp_medium * media;
Nemesi_DemuxerStreamData * ndsd = calloc(1, sizeof(Nemesi_DemuxerStreamData));
memset(&hints,0,sizeof(hints));
if (rtsp_port) hints.first_rtp_port = rtsp_port;
if (rtsp_transport_tcp) {
hints.pref_rtsp_proto = TCP;
hints.pref_rtp_proto = TCP;
}
if (rtsp_transport_sctp) {
hints.pref_rtsp_proto = SCTP;
hints.pref_rtp_proto = SCTP;
}
mp_msg(MSGT_DEMUX, MSGL_INFO, "Initializing libNemesi\n");
if ((ctl = rtsp_init(&hints)) == NULL) {
free(ndsd);
return STREAM_ERROR;
}
ndsd->rtsp = ctl;
demuxer->priv = ndsd;
//nms_verbosity_set(1);
mp_msg(MSGT_DEMUX, MSGL_INFO, "Opening: %s\n", url);
if (rtsp_open(ctl, url)) {
mp_msg(MSGT_DEMUX, MSGL_ERR, "rtsp_open failed.\n");
return demuxer;
}
reply = rtsp_wait(ctl);
if (reply.got_error) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"OPEN Error from the server: %s\n",
reply.message.reply_str);
return demuxer;
}
rtsp_play(ctl, 0, 0);
reply = rtsp_wait(ctl);
if (reply.got_error) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"PLAY Error from the server: %s\n",
reply.message.reply_str);
return demuxer;
}
if (!ctl->rtsp_queue)
return demuxer;
media = ctl->rtsp_queue->media_queue;
for (; media; media=media->next) {
sdp_medium_info * info = media->medium_info;
rtp_session * sess = media->rtp_sess;
rtp_buff buff;
int media_format = atoi(info->fmts);
rtp_pt * ptinfo = rtp_get_pt_info(sess, media_format);
char const * format_name = ptinfo ? ptinfo->name : NULL;
memset(&buff, 0, sizeof(rtp_buff));
if (sess->parsers[media_format] == NULL) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"libNemesi unsupported media format: %s\n",
format_name ? format_name : info->fmts);
continue;
}
else {
mp_msg(MSGT_DEMUX, MSGL_INFO,
"libNemesi supported media: %s\n",
format_name);
}
if (ptinfo->type == AU) {
if (ndsd->session[NEMESI_SESSION_AUDIO] == NULL) {
sh_audio_t* sh_audio = new_sh_audio(demuxer,0);
WAVEFORMATEX* wf;
demux_stream_t* d_audio = demuxer->audio;
demuxer->audio->id = 0;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Detected as AUDIO stream...\n");
link_session_and_fetch_conf(ndsd, NEMESI_SESSION_AUDIO,
sess, &buff, NULL);
wf = calloc(1,sizeof(*wf)+buff.len);
wf->cbSize = buff.len;
memcpy(wf+1, buff.data, buff.len);
sh_audio->wf = wf;
d_audio->sh = sh_audio;
sh_audio->ds = d_audio;
wf->nSamplesPerSec = 0;
wf->wFormatTag =
sh_audio->format = get4CC(supported_audio, format_name);
if ( !(wf->wFormatTag) )
mp_msg(MSGT_DEMUX, MSGL_WARN,
"Unknown MPlayer format code for MIME"
" type \"audio/%s\"\n", format_name);
} else {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"There is already an audio session registered,"
" ignoring...\n");
}
} else if (ptinfo->type == VI) {
if (ndsd->session[NEMESI_SESSION_VIDEO] == NULL) {
sh_video_t* sh_video;
BITMAPINFOHEADER* bih;
demux_stream_t* d_video;
int fps = 0;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Detected as VIDEO stream...\n");
link_session_and_fetch_conf(ndsd, NEMESI_SESSION_VIDEO,
sess, &buff, &fps);
bih = calloc(1,sizeof(*bih)+buff.len);
bih->biSize = sizeof(*bih)+buff.len;
memcpy(bih+1, buff.data, buff.len);
sh_video = new_sh_video(demuxer,0);
sh_video->bih = bih;
d_video = demuxer->video;
d_video->sh = sh_video;
sh_video->ds = d_video;
if (fps) {
sh_video->fps = fps;
sh_video->frametime = 1.0/fps;
}
bih->biCompression =
sh_video->format = get4CC(supported_video, format_name);
if ( !(bih->biCompression) ) {
mp_msg(MSGT_DEMUX, MSGL_WARN,
"Unknown MPlayer format code for MIME"
" type \"video/%s\"\n", format_name);
}
} else {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"There is already a video session registered,"
" ignoring...\n");
}
} else {
mp_msg(MSGT_DEMUX, MSGL_ERR, "Unsupported media type\n");
}
}
demuxer->stream->eof = 0;
return demuxer;
}
static int get_data_for_session(Nemesi_DemuxerStreamData * ndsd,
Nemesi_SessionType stype, rtp_ssrc * ssrc,
rtp_frame * fr)
{
if (ndsd->first_pkt[stype].len != 0) {
fr->data = ndsd->first_pkt[stype].data;
fr->time_sec = ndsd->first_pkt[stype].time_sec;
fr->len = ndsd->first_pkt[stype].len;
ndsd->first_pkt[stype].len = 0;
return RTP_FILL_OK;
} else {
rtp_buff buff;
return rtp_fill_buffer(ssrc, fr, &buff);
}
}
static void stream_add_packet(Nemesi_DemuxerStreamData * ndsd,
Nemesi_SessionType stype,
demux_stream_t* ds, rtp_frame * fr)
{
demux_packet_t* dp = new_demux_packet(fr->len);
memcpy(dp->buffer, fr->data, fr->len);
fr->time_sec += ndsd->seek;
ndsd->time[stype] = dp->pts = fr->time_sec;
ds_add_packet(ds, dp);
}
static int demux_rtp_fill_buffer(demuxer_t* demuxer, demux_stream_t* ds)
{
Nemesi_DemuxerStreamData * ndsd = demuxer->priv;
Nemesi_SessionType stype;
rtp_ssrc * ssrc;
rtp_frame fr;
if ( (!ndsd->rtsp->rtsp_queue) || (demuxer->stream->eof) ) {
mp_msg(MSGT_DEMUX, MSGL_INFO, "End of Stream...\n");
demuxer->stream->eof = 1;
return 0;
}
memset(&fr, 0, sizeof(fr));
stype = DS_TO_STYPE(demuxer, ds);
if ( (ssrc = wait_for_packets(ndsd, stype)) == NULL ) {
mp_msg(MSGT_DEMUX, MSGL_INFO, "Bye...\n");
demuxer->stream->eof = 1;
return 0;
}
if(!get_data_for_session(ndsd, stype, ssrc, &fr))
stream_add_packet(ndsd, stype, ds, &fr);
else {
stype = INVERT_STYPE(stype);
//Must check if we actually have a stream of the other type
if (!ndsd->session[stype])
return 1;
ds = STYPE_TO_DS(demuxer, stype);
ssrc = wait_for_packets(ndsd, stype);
if(!get_data_for_session(ndsd, stype, ssrc, &fr))
stream_add_packet(ndsd, stype, ds, &fr);
}
return 1;
}
static void demux_close_rtp(demuxer_t* demuxer)
{
Nemesi_DemuxerStreamData * ndsd = demuxer->priv;
rtsp_ctrl * ctl = ndsd->rtsp;
RTSP_Error err;
mp_msg(MSGT_DEMUX, MSGL_INFO, "Closing libNemesi RTSP Stream...\n");
if (ndsd == NULL)
return;
free(ndsd);
if (rtsp_close(ctl)) {
err = rtsp_wait(ctl);
if (err.got_error)
mp_msg(MSGT_DEMUX, MSGL_ERR,
"Error Closing Stream: %s\n",
err.message.reply_str);
}
rtsp_uninit(ctl);
}
static void demux_seek_rtp(demuxer_t *demuxer, float rel_seek_secs,
float audio_delay, int flags)
{
Nemesi_DemuxerStreamData * ndsd = demuxer->priv;
rtsp_ctrl * ctl = ndsd->rtsp;
sdp_attr * r_attr = NULL;
sdp_range r = {0, 0};
double time = ndsd->time[NEMESI_SESSION_VIDEO] ?
ndsd->time[NEMESI_SESSION_VIDEO] :
ndsd->time[NEMESI_SESSION_AUDIO];
if (!ctl->rtsp_queue)
return;
r_attr = sdp_get_attr(ctl->rtsp_queue->info->attr_list, "range");
if (r_attr)
r = sdp_parse_range(r_attr->value);
//flags & 1 -> absolute seek
//flags & 2 -> percent seek
if (flags == 0) {
time += rel_seek_secs;
if (time < r.begin)
time = r.begin;
else if (time > r.end)
time = r.end;
ndsd->seek = time;
mp_msg(MSGT_DEMUX,MSGL_WARN,"libNemesi SEEK %f on %f - %f)\n",
time, r.begin, r.end);
if (!rtsp_seek(ctl, time, 0)) {
RTSP_Error err = rtsp_wait(ctl);
if (err.got_error) {
mp_msg(MSGT_DEMUX, MSGL_ERR,
"Error Performing Seek: %s\n",
err.message.reply_str);
demuxer->stream->eof = 1;
}
else
mp_msg(MSGT_DEMUX, MSGL_INFO, "Seek, performed\n");
}
else {
mp_msg(MSGT_DEMUX, MSGL_ERR, "Unable to pause stream to perform seek\n");
demuxer->stream->eof = 1;
}
}
else
mp_msg(MSGT_DEMUX, MSGL_ERR, "Unsupported seek type\n");
}
static int demux_rtp_control(struct demuxer *demuxer, int cmd, void *arg)
{
Nemesi_DemuxerStreamData * ndsd = demuxer->priv;
rtsp_ctrl * ctl = ndsd->rtsp;
sdp_attr * r_attr = NULL;
sdp_range r = {0, 0};
double time = ndsd->time[NEMESI_SESSION_VIDEO] ?
ndsd->time[NEMESI_SESSION_VIDEO] :
ndsd->time[NEMESI_SESSION_AUDIO];
if (!ctl->rtsp_queue)
return DEMUXER_CTRL_DONTKNOW;
r_attr = sdp_get_attr(ctl->rtsp_queue->info->attr_list, "range");
if (r_attr)
r = sdp_parse_range(r_attr->value);
switch (cmd) {
case DEMUXER_CTRL_GET_TIME_LENGTH:
if (r.end == 0)
return DEMUXER_CTRL_DONTKNOW;
*((double *)arg) = ((double)r.end) - ((double)r.begin);
return DEMUXER_CTRL_OK;
case DEMUXER_CTRL_GET_PERCENT_POS:
if (r.end == 0)
return DEMUXER_CTRL_DONTKNOW;
*((int *)arg) = (int)( time * 100 / (r.end - r.begin) );
return DEMUXER_CTRL_OK;
default:
return DEMUXER_CTRL_DONTKNOW;
}
}
const demuxer_desc_t demuxer_desc_rtp_nemesi = {
"libnemesi RTP demuxer",
"nemesi",
"",
"Alessandro Molina",
"requires libnemesi",
DEMUXER_TYPE_RTP_NEMESI,
0, // no autodetect
NULL,
demux_rtp_fill_buffer,
demux_open_rtp,
demux_close_rtp,
demux_seek_rtp,
demux_rtp_control
};
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