zoneminder/src/zm_eventstream.cpp

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//
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// ZoneMinder Event Stream Class Implementation
// Copyright (C) 2001-2008 Philip Coombes
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
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//
#include <arpa/inet.h>
#include "zm.h"
#include "zm_db.h"
#include "zm_time.h"
#include "zm_mpeg.h"
#include "zm_event.h"
#include "zm_eventstream.h"
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#include "zm_storage.h"
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#include "zm_monitor.h"
#include "zm_sendfile.h"
static std::string StreamMode_Strings[4] = {
"None",
"Single",
"All",
"Gapless"
};
bool EventStream::loadInitialEventData(int monitor_id, time_t event_time) {
static char sql[ZM_SQL_SML_BUFSIZ];
snprintf(sql, sizeof(sql), "SELECT `Id` FROM `Events` WHERE "
"`MonitorId` = %d AND unix_timestamp(`EndDateTime`) > %ld "
"ORDER BY `Id` ASC LIMIT 1", monitor_id, event_time);
if ( mysql_query(&dbconn, sql) ) {
Error("Can't run query: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
MYSQL_RES *result = mysql_store_result(&dbconn);
if ( !result ) {
Error("Can't use query result: %s", mysql_error(&dbconn));
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exit(mysql_errno(&dbconn));
}
MYSQL_ROW dbrow = mysql_fetch_row(result);
if ( mysql_errno(&dbconn) ) {
Error("Can't fetch row: %s", mysql_error(&dbconn));
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exit(mysql_errno(&dbconn));
}
uint64_t init_event_id = atoll(dbrow[0]);
mysql_free_result(result);
loadEventData(init_event_id);
if ( event_time ) {
curr_stream_time = event_time;
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curr_frame_id = 1; // curr_frame_id is 1-based
if ( event_time >= event_data->start_time ) {
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Debug(2, "event time is after event start");
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for ( unsigned int i = 0; i < event_data->frame_count; i++ ) {
//Info( "eft %d > et %d", event_data->frames[i].timestamp, event_time );
if ( event_data->frames[i].timestamp >= event_time ) {
curr_frame_id = i+1;
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Debug(3, "Set curr_stream_time:%.2f, curr_frame_id:%d", curr_stream_time, curr_frame_id);
break;
}
} // end foreach frame
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Debug(3, "Skipping %ld frames", event_data->frame_count);
} else {
Warning("Requested an event time less than the start of the event. event_time %.2f < start_time %.2f",
event_time, event_data->start_time);
}
} // end if have a start time
return true;
} // bool EventStream::loadInitialEventData( int monitor_id, time_t event_time )
bool EventStream::loadInitialEventData(
uint64_t init_event_id,
unsigned int init_frame_id
) {
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loadEventData(init_event_id);
if ( init_frame_id ) {
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if ( init_frame_id >= event_data->frame_count ) {
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Error("Invalid frame id specified. %d > %d", init_frame_id, event_data->frame_count);
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curr_stream_time = event_data->start_time;
curr_frame_id = 1;
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} else {
curr_stream_time = event_data->frames[init_frame_id-1].timestamp;
curr_frame_id = init_frame_id;
}
} else {
curr_stream_time = event_data->start_time;
}
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return true;
}
bool EventStream::loadEventData(uint64_t event_id) {
static char sql[ZM_SQL_MED_BUFSIZ];
snprintf(sql, sizeof(sql),
"SELECT `MonitorId`, `StorageId`, `Frames`, unix_timestamp( `StartDateTime` ) AS StartTimestamp, "
"unix_timestamp( `EndDateTime` ) AS EndTimestamp, "
"(SELECT max(`Delta`)-min(`Delta`) FROM `Frames` WHERE `EventId`=`Events`.`Id`) AS Duration, "
"`DefaultVideo`, `Scheme`, `SaveJPEGs`, `Orientation`+0 FROM `Events` WHERE `Id` = %" PRIu64, event_id);
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if ( mysql_query(&dbconn, sql) ) {
Error("Can't run query: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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MYSQL_RES *result = mysql_store_result(&dbconn);
if ( !result ) {
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Error("Can't use query result: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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if ( !mysql_num_rows(result) ) {
Fatal("Unable to load event %d, not found in DB", event_id);
}
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MYSQL_ROW dbrow = mysql_fetch_row(result);
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if ( mysql_errno(&dbconn) ) {
Error("Can't fetch row: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
delete event_data;
event_data = new EventData;
event_data->event_id = event_id;
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event_data->monitor_id = atoi(dbrow[0]);
event_data->storage_id = dbrow[1] ? atoi(dbrow[1]) : 0;
event_data->frame_count = dbrow[2] == nullptr ? 0 : atoi(dbrow[2]);
event_data->start_time = atoi(dbrow[3]);
event_data->end_time = dbrow[4] ? atoi(dbrow[4]) : 0;
event_data->duration = dbrow[5] ? atof(dbrow[5]) : 0.0;
strncpy(event_data->video_file, dbrow[6], sizeof(event_data->video_file)-1);
std::string scheme_str = std::string(dbrow[7]);
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if ( scheme_str == "Deep" ) {
event_data->scheme = Storage::DEEP;
} else if ( scheme_str == "Medium" ) {
event_data->scheme = Storage::MEDIUM;
} else {
event_data->scheme = Storage::SHALLOW;
}
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event_data->SaveJPEGs = dbrow[8] == nullptr ? 0 : atoi(dbrow[8]);
event_data->Orientation = (Monitor::Orientation)(dbrow[9] == nullptr ? 0 : atoi(dbrow[9]));
mysql_free_result(result);
if ( !monitor ) {
monitor = Monitor::Load(event_data->monitor_id, false, Monitor::QUERY);
} else if ( monitor->Id() != event_data->monitor_id ) {
delete monitor;
monitor = Monitor::Load(event_data->monitor_id, false, Monitor::QUERY);
}
if ( !monitor ) {
Fatal("Unable to load monitor id %d for streaming", event_data->monitor_id);
}
if ( !storage ) {
storage = new Storage(event_data->storage_id);
} else if ( storage->Id() != event_data->storage_id ) {
delete storage;
storage = new Storage(event_data->storage_id);
}
const char *storage_path = storage->Path();
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if ( event_data->scheme == Storage::DEEP ) {
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struct tm *event_time = localtime(&event_data->start_time);
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if ( storage_path[0] == '/' )
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snprintf(event_data->path, sizeof(event_data->path),
"%s/%u/%02d/%02d/%02d/%02d/%02d/%02d",
storage_path, event_data->monitor_id,
event_time->tm_year-100, event_time->tm_mon+1, event_time->tm_mday,
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event_time->tm_hour, event_time->tm_min, event_time->tm_sec);
else
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snprintf(event_data->path, sizeof(event_data->path),
"%s/%s/%u/%02d/%02d/%02d/%02d/%02d/%02d",
staticConfig.PATH_WEB.c_str(), storage_path, event_data->monitor_id,
event_time->tm_year-100, event_time->tm_mon+1, event_time->tm_mday,
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event_time->tm_hour, event_time->tm_min, event_time->tm_sec);
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} else if ( event_data->scheme == Storage::MEDIUM ) {
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struct tm *event_time = localtime(&event_data->start_time);
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if ( storage_path[0] == '/' )
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snprintf(event_data->path, sizeof(event_data->path),
"%s/%u/%04d-%02d-%02d/%" PRIu64,
storage_path, event_data->monitor_id,
event_time->tm_year+1900, event_time->tm_mon+1, event_time->tm_mday,
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event_data->event_id);
else
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snprintf(event_data->path, sizeof(event_data->path),
"%s/%s/%u/%04d-%02d-%02d/%" PRIu64,
staticConfig.PATH_WEB.c_str(), storage_path, event_data->monitor_id,
event_time->tm_year+1900, event_time->tm_mon+1, event_time->tm_mday,
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event_data->event_id);
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} else {
if ( storage_path[0] == '/' )
snprintf(event_data->path, sizeof(event_data->path), "%s/%u/%" PRIu64,
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storage_path, event_data->monitor_id, event_data->event_id);
else
snprintf(event_data->path, sizeof(event_data->path), "%s/%s/%u/%" PRIu64,
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staticConfig.PATH_WEB.c_str(), storage_path, event_data->monitor_id,
event_data->event_id);
}
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updateFrameRate((double)event_data->frame_count/event_data->duration);
snprintf(sql, sizeof(sql), "SELECT `FrameId`, unix_timestamp(`TimeStamp`), `Delta` "
"FROM `Frames` WHERE `EventId` = %" PRIu64 " ORDER BY `FrameId` ASC", event_id);
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if ( mysql_query(&dbconn, sql) ) {
Error("Can't run query: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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result = mysql_store_result(&dbconn);
if ( !result ) {
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Error("Can't use query result: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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event_data->n_frames = mysql_num_rows(result);
event_data->frames = new FrameData[event_data->frame_count];
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int last_id = 0;
double last_timestamp = event_data->start_time;
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double last_delta = 0.0;
while ( ( dbrow = mysql_fetch_row(result) ) ) {
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int id = atoi(dbrow[0]);
//timestamp = atof(dbrow[1]);
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double delta = atof(dbrow[2]);
int id_diff = id - last_id;
double frame_delta = id_diff ? (delta-last_delta)/id_diff : (delta-last_delta);
// Fill in data between bulk frames
if ( id_diff > 1 ) {
for ( int i = last_id+1; i < id; i++ ) {
// Delta is the time since last frame, no since beginning of Event
event_data->frames[i-1].delta = frame_delta;
event_data->frames[i-1].timestamp = last_timestamp + ((i-last_id)*frame_delta);
event_data->frames[i-1].offset = event_data->frames[i-1].timestamp - event_data->start_time;
event_data->frames[i-1].in_db = false;
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Debug(3, "Frame %d timestamp:(%f), offset(%f) delta(%f), in_db(%d)",
i,
event_data->frames[i-1].timestamp,
event_data->frames[i-1].offset,
event_data->frames[i-1].delta,
event_data->frames[i-1].in_db
);
}
}
event_data->frames[id-1].timestamp = event_data->start_time + delta;
event_data->frames[id-1].offset = delta;
event_data->frames[id-1].delta = frame_delta;
event_data->frames[id-1].in_db = true;
last_id = id;
last_delta = delta;
last_timestamp = event_data->frames[id-1].timestamp;
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Debug(3, "Frame %d timestamp:(%f), offset(%f) delta(%f), in_db(%d)",
id,
event_data->frames[id-1].timestamp,
event_data->frames[id-1].offset,
event_data->frames[id-1].delta,
event_data->frames[id-1].in_db
);
}
// Incomplete events might not have any frame data
event_data->last_frame_id = last_id;
if ( mysql_errno(&dbconn) ) {
Error("Can't fetch row: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
mysql_free_result(result);
if ( event_data->video_file[0] || (monitor->GetOptVideoWriter() > 0) ) {
if ( !event_data->video_file[0] ) {
snprintf(event_data->video_file, sizeof(event_data->video_file), "%" PRIu64 "-%s", event_data->event_id, "video.mp4");
}
std::string filepath = std::string(event_data->path) + "/" + std::string(event_data->video_file);
Debug(1, "Loading video file from %s", filepath.c_str());
if ( ffmpeg_input )
delete ffmpeg_input;
ffmpeg_input = new FFmpeg_Input();
if ( 0 > ffmpeg_input->Open(filepath.c_str()) ) {
Warning("Unable to open ffmpeg_input %s", filepath.c_str());
delete ffmpeg_input;
ffmpeg_input = nullptr;
}
}
// Not sure about this
if ( forceEventChange || mode == MODE_ALL_GAPLESS ) {
if ( replay_rate > 0 )
curr_stream_time = event_data->frames[0].timestamp;
else
curr_stream_time = event_data->frames[event_data->last_frame_id-1].timestamp;
}
Debug(2, "Event:%" PRIu64 ", Frames:%ld, Last Frame ID(%ld, Duration: %.2f",
event_data->event_id, event_data->frame_count, event_data->last_frame_id, event_data->duration);
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return true;
} // bool EventStream::loadEventData( int event_id )
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void EventStream::processCommand(const CmdMsg *msg) {
Debug(2, "Got message, type %d, msg %d", msg->msg_type, msg->msg_data[0]);
// Check for incoming command
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switch ( (MsgCommand)msg->msg_data[0] ) {
case CMD_PAUSE :
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Debug(1, "Got PAUSE command");
// Set paused flag
paused = true;
replay_rate = ZM_RATE_BASE;
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last_frame_sent = TV_2_FLOAT(now);
break;
case CMD_PLAY :
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Debug(1, "Got PLAY command");
if ( paused ) {
paused = false;
}
// If we are in single event mode and at the last frame, replay the current event
if (
(mode == MODE_SINGLE || mode == MODE_NONE)
&&
((unsigned int)curr_frame_id == event_data->last_frame_id)
) {
Debug(1, "Was in single or no replay mode, and at last frame, so jumping to 1st frame");
curr_frame_id = 1;
} else {
Debug(1, "mode is %s, current frame is %ld, frame count is %ld, last frame id is %ld",
(mode == MODE_SINGLE ? "single" : "not single"),
curr_frame_id, event_data->frame_count );
}
replay_rate = ZM_RATE_BASE;
break;
case CMD_VARPLAY :
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Debug(1, "Got VARPLAY command");
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if ( paused ) {
paused = false;
}
replay_rate = ntohs(((unsigned char)msg->msg_data[2]<<8)|(unsigned char)msg->msg_data[1])-32768;
if ( replay_rate > 50 * ZM_RATE_BASE ) {
Warning("requested replay rate (%d) is too high. We only support up to 50x", replay_rate);
replay_rate = 50 * ZM_RATE_BASE;
} else if ( replay_rate < -50*ZM_RATE_BASE ) {
Warning("requested replay rate (%d) is too low. We only support up to -50x", replay_rate);
replay_rate = -50 * ZM_RATE_BASE;
}
break;
case CMD_STOP :
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Debug(1, "Got STOP command");
paused = false;
break;
case CMD_FASTFWD :
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Debug(1, "Got FAST FWD command");
if ( paused ) {
paused = false;
}
// Set play rate
switch ( replay_rate ) {
case 2 * ZM_RATE_BASE :
replay_rate = 5 * ZM_RATE_BASE;
break;
case 5 * ZM_RATE_BASE :
replay_rate = 10 * ZM_RATE_BASE;
break;
case 10 * ZM_RATE_BASE :
replay_rate = 25 * ZM_RATE_BASE;
break;
case 25 * ZM_RATE_BASE :
case 50 * ZM_RATE_BASE :
replay_rate = 50 * ZM_RATE_BASE;
break;
default :
Debug(1,"Defaulting replay_rate to 2*ZM_RATE_BASE because it is %d", replay_rate);
replay_rate = 2 * ZM_RATE_BASE;
break;
}
break;
case CMD_SLOWFWD :
paused = true;
replay_rate = ZM_RATE_BASE;
step = 1;
if ( (unsigned int)curr_frame_id < event_data->last_frame_id )
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curr_frame_id += 1;
Debug(1, "Got SLOWFWD command new frame id %d", curr_frame_id);
break;
case CMD_SLOWREV :
paused = true;
replay_rate = ZM_RATE_BASE;
step = -1;
curr_frame_id -= 1;
if ( curr_frame_id < 1 ) curr_frame_id = 1;
Debug(1, "Got SLOWREV command new frame id %d", curr_frame_id);
break;
case CMD_FASTREV :
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Debug(1, "Got FAST REV command");
paused = false;
// Set play rate
switch ( replay_rate ) {
case -1 * ZM_RATE_BASE :
replay_rate = -2 * ZM_RATE_BASE;
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break;
case -2 * ZM_RATE_BASE :
replay_rate = -5 * ZM_RATE_BASE;
break;
case -5 * ZM_RATE_BASE :
replay_rate = -10 * ZM_RATE_BASE;
break;
case -10 * ZM_RATE_BASE :
replay_rate = -25 * ZM_RATE_BASE;
break;
case -25 * ZM_RATE_BASE :
case -50 * ZM_RATE_BASE :
replay_rate = -50 * ZM_RATE_BASE;
break;
default :
replay_rate = -1 * ZM_RATE_BASE;
break;
}
break;
case CMD_ZOOMIN :
x = ((unsigned char)msg->msg_data[1]<<8)|(unsigned char)msg->msg_data[2];
y = ((unsigned char)msg->msg_data[3]<<8)|(unsigned char)msg->msg_data[4];
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Debug(1, "Got ZOOM IN command, to %d,%d", x, y);
switch ( zoom ) {
case 100:
zoom = 150;
break;
case 150:
zoom = 200;
break;
case 200:
zoom = 300;
break;
case 300:
zoom = 400;
break;
case 400:
default :
zoom = 500;
break;
}
send_frame = true;
break;
case CMD_ZOOMOUT :
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Debug(1, "Got ZOOM OUT command");
switch ( zoom ) {
case 500:
zoom = 400;
break;
case 400:
zoom = 300;
break;
case 300:
zoom = 200;
break;
case 200:
zoom = 150;
break;
case 150:
default :
zoom = 100;
break;
}
send_frame = true;
break;
case CMD_PAN :
x = ((unsigned char)msg->msg_data[1]<<8)|(unsigned char)msg->msg_data[2];
y = ((unsigned char)msg->msg_data[3]<<8)|(unsigned char)msg->msg_data[4];
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Debug(1, "Got PAN command, to %d,%d", x, y);
break;
case CMD_SCALE :
scale = ((unsigned char)msg->msg_data[1]<<8)|(unsigned char)msg->msg_data[2];
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Debug(1, "Got SCALE command, to %d", scale);
break;
case CMD_PREV :
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Debug(1, "Got PREV command");
if ( replay_rate >= 0 )
curr_frame_id = 0;
else
curr_frame_id = event_data->last_frame_id+1;
paused = false;
forceEventChange = true;
break;
case CMD_NEXT :
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Debug(1, "Got NEXT command");
if ( replay_rate >= 0 )
curr_frame_id = event_data->last_frame_id+1;
else
curr_frame_id = 0;
paused = false;
forceEventChange = true;
break;
case CMD_SEEK :
{
// offset is in seconds
int int_part = ((unsigned char)msg->msg_data[1]<<24)|((unsigned char)msg->msg_data[2]<<16)|((unsigned char)msg->msg_data[3]<<8)|(unsigned char)msg->msg_data[4];
int dec_part = ((unsigned char)msg->msg_data[5]<<24)|((unsigned char)msg->msg_data[6]<<16)|((unsigned char)msg->msg_data[7]<<8)|(unsigned char)msg->msg_data[8];
double offset = (double)int_part + (double)(dec_part / (double)1000000);
if ( offset < 0.0 ) {
Warning("Invalid offset, not seeking");
break;
}
// This should get us close, but not all frames will have the same duration
curr_frame_id = (int)(event_data->frame_count*offset/event_data->duration)+1;
if ( event_data->frames[curr_frame_id-1].offset > offset ) {
while ( (curr_frame_id --) && ( event_data->frames[curr_frame_id-1].offset > offset ) ) {
}
} else if ( event_data->frames[curr_frame_id-1].offset < offset ) {
while ( (curr_frame_id ++) && ( event_data->frames[curr_frame_id-1].offset > offset ) ) {
}
}
if ( curr_frame_id < 1 ) {
curr_frame_id = 1;
} else if ( (unsigned long)curr_frame_id > event_data->last_frame_id ) {
curr_frame_id = event_data->last_frame_id;
}
curr_stream_time = event_data->frames[curr_frame_id-1].timestamp;
Debug(1, "Got SEEK command, to %f (new current frame id: %d offset %f)",
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offset, curr_frame_id, event_data->frames[curr_frame_id-1].offset);
send_frame = true;
break;
}
case CMD_QUERY :
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Debug(1, "Got QUERY command, sending STATUS");
break;
case CMD_QUIT :
Info("User initiated exit - CMD_QUIT");
break;
default :
// Do nothing, for now
break;
}
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struct {
uint64_t event_id;
double duration;
double progress;
int rate;
int zoom;
bool paused;
} status_data;
status_data.event_id = event_data->event_id;
status_data.duration = event_data->duration;
status_data.progress = event_data->frames[curr_frame_id-1].offset;
status_data.rate = replay_rate;
status_data.zoom = zoom;
status_data.paused = paused;
Debug(2, "Event:%" PRIu64 ", Duration %f, Paused:%d, progress:%f Rate:%d, Zoom:%d",
status_data.event_id,
status_data.duration,
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status_data.paused,
status_data.progress,
status_data.rate,
status_data.zoom
);
DataMsg status_msg;
status_msg.msg_type = MSG_DATA_EVENT;
memcpy(&status_msg.msg_data, &status_data, sizeof(status_data));
Debug(1, "Size of msg %d", sizeof(status_data));
if ( sendto(sd, &status_msg, sizeof(status_msg), MSG_DONTWAIT, (sockaddr *)&rem_addr, sizeof(rem_addr)) < 0 ) {
//if ( errno != EAGAIN )
{
Error("Can't sendto on sd %d: %s", sd, strerror(errno));
//exit(-1);
}
}
// quit after sending a status, if this was a quit request
if ( (MsgCommand)msg->msg_data[0] == CMD_QUIT )
exit(0);
updateFrameRate((double)event_data->frame_count/event_data->duration);
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} // void EventStream::processCommand(const CmdMsg *msg)
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bool EventStream::checkEventLoaded() {
static char sql[ZM_SQL_SML_BUFSIZ];
if ( curr_frame_id <= 0 ) {
snprintf(sql, sizeof(sql),
"SELECT `Id` FROM `Events` WHERE `MonitorId` = %d AND `Id` < %" PRIu64 " ORDER BY `Id` DESC LIMIT 1",
event_data->monitor_id, event_data->event_id);
} else if ( (unsigned int)curr_frame_id > event_data->last_frame_id ) {
if ( !event_data->end_time ) {
// We are viewing an in-process event, so just reload it.
loadEventData(event_data->event_id);
if ( (unsigned int)curr_frame_id > event_data->last_frame_id )
curr_frame_id = event_data->last_frame_id;
return false;
}
snprintf(sql, sizeof(sql),
"SELECT `Id` FROM `Events` WHERE `MonitorId` = %d AND `Id` > %" PRIu64 " ORDER BY `Id` ASC LIMIT 1",
event_data->monitor_id, event_data->event_id);
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} else {
// No event change required
Debug(3, "No event change required, as curr frame %d <=> event frames %d",
curr_frame_id, event_data->frame_count);
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return false;
}
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// Event change required.
if ( forceEventChange || ( (mode != MODE_SINGLE) && (mode != MODE_NONE) ) ) {
Debug(1, "Checking for next event %s", sql);
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if ( mysql_query(&dbconn, sql) ) {
Error("Can't run query: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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MYSQL_RES *result = mysql_store_result(&dbconn);
if ( !result ) {
Error("Can't use query result: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
if ( mysql_num_rows(result) != 1 ) {
Debug(1, "No rows returned for %s", sql);
}
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MYSQL_ROW dbrow = mysql_fetch_row(result);
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if ( mysql_errno(&dbconn)) {
Error("Can't fetch row: %s", mysql_error(&dbconn));
exit(mysql_errno(&dbconn));
}
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if ( dbrow ) {
uint64_t event_id = atoll(dbrow[0]);
Debug(1, "Loading new event %" PRIu64, event_id);
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loadEventData(event_id);
if ( replay_rate < 0 ) // rewind
curr_frame_id = event_data->last_frame_id;
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else
curr_frame_id = 1;
Debug(2, "New frame id = %d", curr_frame_id);
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return true;
} else {
Debug(2, "No next event loaded using %s. Pausing", sql);
if ( curr_frame_id <= 0 )
curr_frame_id = 1;
else
curr_frame_id = event_data->frame_count;
paused = true;
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sendTextFrame("No more event data found");
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} // end if found a new event or not
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mysql_free_result(result);
forceEventChange = false;
} else {
Debug(2, "Pausing because mode is %d", mode);
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if ( curr_frame_id <= 0 )
curr_frame_id = 1;
else
curr_frame_id = event_data->last_frame_id;
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paused = true;
}
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return false;
} // void EventStream::checkEventLoaded()
Image * EventStream::getImage( ) {
static char filepath[PATH_MAX];
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snprintf(filepath, sizeof(filepath), staticConfig.capture_file_format, event_data->path, curr_frame_id);
Debug(2, "EventStream::getImage path(%s) from %s frame(%d) ", filepath, event_data->path, curr_frame_id);
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Image *image = new Image(filepath);
return image;
}
bool EventStream::sendFrame(int delta_us) {
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Debug(2, "Sending frame %d", curr_frame_id);
static char filepath[PATH_MAX];
static struct stat filestat;
// This needs to be abstracted. If we are saving jpgs, then load the capture file.
// If we are only saving analysis frames, then send that.
if ( event_data->SaveJPEGs & 1 ) {
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snprintf(filepath, sizeof(filepath), staticConfig.capture_file_format, event_data->path, curr_frame_id);
} else if ( event_data->SaveJPEGs & 2 ) {
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snprintf(filepath, sizeof(filepath), staticConfig.analyse_file_format, event_data->path, curr_frame_id);
if ( stat(filepath, &filestat) < 0 ) {
Debug(1, "analyze file %s not found will try to stream from other", filepath);
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snprintf(filepath, sizeof(filepath), staticConfig.capture_file_format, event_data->path, curr_frame_id);
if ( stat(filepath, &filestat) < 0 ) {
Debug(1, "capture file %s not found either", filepath);
filepath[0] = 0;
}
}
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} else if ( !ffmpeg_input ) {
Fatal("JPEGS not saved. zms is not capable of streaming jpegs from mp4 yet");
return false;
}
#if HAVE_LIBAVCODEC
if ( type == STREAM_MPEG ) {
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Image image(filepath);
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Image *send_image = prepareImage(&image);
if ( !vid_stream ) {
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vid_stream = new VideoStream("pipe:", format, bitrate, effective_fps,
send_image->Colours(), send_image->SubpixelOrder(), send_image->Width(), send_image->Height());
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fprintf(stdout, "Content-type: %s\r\n\r\n", vid_stream->MimeType());
vid_stream->OpenStream();
}
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/* double pts = */ vid_stream->EncodeFrame(send_image->Buffer(), send_image->Size(), config.mpeg_timed_frames, delta_us*1000);
} else
#endif // HAVE_LIBAVCODEC
{
bool send_raw = (type == STREAM_JPEG) && ((scale>=ZM_SCALE_BASE)&&(zoom==ZM_SCALE_BASE)) && filepath[0];
fprintf(stdout, "--" BOUNDARY "\r\n");
if ( send_raw ) {
if ( !send_file(filepath) ) {
Error("Can't send %s: %s", filepath, strerror(errno));
return false;
}
} else {
Image *image = nullptr;
if ( filepath[0] ) {
image = new Image(filepath);
} else if ( ffmpeg_input ) {
// Get the frame from the mp4 input
FrameData *frame_data = &event_data->frames[curr_frame_id-1];
AVFrame *frame = ffmpeg_input->get_frame(
ffmpeg_input->get_video_stream_id(),
frame_data->offset);
if ( frame ) {
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image = new Image(frame);
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//av_frame_free(&frame);
} else {
Error("Failed getting a frame.");
return false;
}
// when stored as an mp4, we just have the rotation as a flag in the headers
// so we need to rotate it before outputting
if (
(monitor->GetOptVideoWriter() == Monitor::PASSTHROUGH)
and
(event_data->Orientation != Monitor::ROTATE_0)
) {
Debug(2, "Rotating image %d", event_data->Orientation);
switch ( event_data->Orientation ) {
case Monitor::ROTATE_0 :
// No action required
break;
case Monitor::ROTATE_90 :
case Monitor::ROTATE_180 :
case Monitor::ROTATE_270 :
image->Rotate((event_data->Orientation-1)*90);
break;
case Monitor::FLIP_HORI :
case Monitor::FLIP_VERT :
image->Flip(event_data->Orientation==Monitor::FLIP_HORI);
break;
default:
Error("Invalid Orientation: %d", event_data->Orientation);
}
} else {
Debug(2, "Not Rotating image %d", event_data->Orientation);
} // end if have rotation
} else {
Error("Unable to get a frame");
return false;
}
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Image *send_image = prepareImage(image);
static unsigned char temp_img_buffer[ZM_MAX_IMAGE_SIZE];
int img_buffer_size = 0;
uint8_t *img_buffer = temp_img_buffer;
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switch ( type ) {
case STREAM_JPEG :
send_image->EncodeJpeg(img_buffer, &img_buffer_size);
fputs("Content-Type: image/jpeg\r\n", stdout);
break;
case STREAM_ZIP :
unsigned long zip_buffer_size;
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send_image->Zip(img_buffer, &zip_buffer_size);
img_buffer_size = zip_buffer_size;
fputs("Content-Type: image/x-rgbz\r\n", stdout);
break;
case STREAM_RAW :
img_buffer = (uint8_t*)(send_image->Buffer());
img_buffer_size = send_image->Size();
fputs("Content-Type: image/x-rgb\r\n", stdout);
break;
default:
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Fatal("Unexpected frame type %d", type);
break;
}
send_buffer(img_buffer, img_buffer_size);
delete image;
image = nullptr;
} // end if send_raw or not
} // end if stream MPEG or other
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fputs("\r\n", stdout);
fflush(stdout);
last_frame_sent = TV_2_FLOAT(now);
return true;
} // bool EventStream::sendFrame( int delta_us )
void EventStream::runStream() {
openComms();
checkInitialised();
if ( type == STREAM_JPEG )
fputs("Content-Type: multipart/x-mixed-replace;boundary=" BOUNDARY "\r\n\r\n", stdout);
if ( !event_data ) {
sendTextFrame("No event data found");
exit(0);
}
updateFrameRate((double)event_data->frame_count/event_data->duration);
gettimeofday(&start, nullptr);
uint64_t start_usec = start.tv_sec * 1000000 + start.tv_usec;
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uint64_t last_frame_offset = 0;
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double time_to_event = 0;
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while ( !zm_terminate ) {
gettimeofday(&now, nullptr);
int delta_us = 0;
send_frame = false;
if ( connkey ) {
// commands may set send_frame to true
while ( checkCommandQueue() && !zm_terminate ) {
// The idea is to loop here processing all commands before proceeding.
}
// Update modified time of the socket .lock file so that we can tell which ones are stale.
if ( now.tv_sec - last_comm_update.tv_sec > 3600 ) {
touch(sock_path_lock);
last_comm_update = now;
}
}
// Get current frame data
FrameData *frame_data = &event_data->frames[curr_frame_id-1];
if ( !paused ) {
// Figure out if we should send this frame
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Debug(3, "not paused at cur_frame_id (%d-1) mod frame_mod(%d)", curr_frame_id, frame_mod);
// If we are streaming and this frame is due to be sent
// frame mod defaults to 1 and if we are going faster than max_fps will get multiplied by 2
// so if it is 2, then we send every other frame, if is it 4 then every fourth frame, etc.
if ( (frame_mod == 1) || (((curr_frame_id-1)%frame_mod) == 0) ) {
send_frame = true;
}
} else if ( step != 0 ) {
Debug(2, "Paused with step %d", step);
// We are paused and are just stepping forward or backward one frame
step = 0;
send_frame = true;
} else if ( !send_frame ) {
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// We are paused, not stepping and doing nothing, meaning that comms didn't set send_frame to true
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double time_since_last_send = TV_2_FLOAT(now) - last_frame_sent;
if ( time_since_last_send > MAX_STREAM_DELAY ) {
// Send keepalive
Debug(2, "Sending keepalive frame");
send_frame = true;
}
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} // end if streaming stepping or doing nothing
// time_to_event > 0 means that we are not in the event
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if ( ( time_to_event > 0 ) and ( mode == MODE_ALL ) ) {
double time_since_last_send = TV_2_FLOAT(now) - last_frame_sent;
Debug(1, "Time since last send = %f = %f - %f", time_since_last_send, TV_2_FLOAT(now), last_frame_sent);
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if ( time_since_last_send > 1 /* second */ ) {
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static char frame_text[64];
snprintf(frame_text, sizeof(frame_text), "Time to %s event = %d seconds",
(replay_rate > 0 ? "next" : "previous" ), (int)time_to_event);
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if ( !sendTextFrame(frame_text) )
zm_terminate = true;
send_frame = false; // In case keepalive was set
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}
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// FIXME ICON But we are not paused. We are somehow still in the event?
double sleep_time = (replay_rate>0?1:-1) * ((1.0L * replay_rate * STREAM_PAUSE_WAIT)/(ZM_RATE_BASE * 1000000));
//double sleep_time = (replay_rate * STREAM_PAUSE_WAIT)/(ZM_RATE_BASE * 1000000);
//// ZM_RATE_BASE == 100, and 1x replay_rate is 100
//double sleep_time = ((replay_rate/ZM_RATE_BASE) * STREAM_PAUSE_WAIT)/1000000;
if ( !sleep_time ) {
sleep_time += STREAM_PAUSE_WAIT/1000000;
}
curr_stream_time += sleep_time;
time_to_event -= sleep_time;
Debug(2, "Sleeping (%dus) because we are not at the next event yet, adding %f", STREAM_PAUSE_WAIT, sleep_time);
usleep(STREAM_PAUSE_WAIT);
//curr_stream_time += (1.0L * replay_rate * STREAM_PAUSE_WAIT)/(ZM_RATE_BASE * 1000000);
//}
continue;
} // end if !in_event
if ( send_frame ) {
if ( !sendFrame(delta_us) ) {
zm_terminate = true;
break;
}
}
curr_stream_time = frame_data->timestamp;
if ( !paused ) {
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// delta is since the last frame
delta_us = (unsigned int)(frame_data->delta * 1000000);
Debug(3, "frame delta %uus ", delta_us);
// if effective > base we should speed up frame delivery
delta_us = (unsigned int)((delta_us * base_fps)/effective_fps);
Debug(3, "delta %u = base_fps(%f)/effective fps(%f)", delta_us, base_fps, effective_fps);
// but must not exceed maxfps
delta_us = max(delta_us, 1000000/maxfps);
Debug(3, "delta %u = base_fps(%f)/effective fps(%f) from 30fps", delta_us, base_fps, effective_fps);
// +/- 1? What if we are skipping frames?
curr_frame_id += (replay_rate>0) ? frame_mod : -1*frame_mod;
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// sending the frame may have taken some time, so reload now
gettimeofday(&now, nullptr);
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uint64_t now_usec = (now.tv_sec * 1000000 + now.tv_usec);
// we incremented by replay_rate, so might have jumped past frame_count
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if ( (mode == MODE_SINGLE) && (
(curr_frame_id < 1 )
||
((unsigned int)curr_frame_id >= event_data->frame_count)
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)
) {
Debug(2, "Have mode==MODE_SINGLE and at end of event, looping back to start");
curr_frame_id = 1;
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// Have to reset start_usec to now when replaying
start_usec = now_usec;
}
frame_data = &event_data->frames[curr_frame_id-1];
// frame_data->delta is the time since last frame as a float in seconds
// but what if we are skipping frames? We need the distance from the last frame sent
// Also, what about reverse? needs to be absolute value
// There are two ways to go about this, not sure which is correct.
// you can calculate the relationship between now and the start
// or calc the relationship from the last frame. I think from the start is better as it self-corrects
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//
if ( last_frame_offset ) {
// We assume that we are going forward and the next frame is in the future.
delta_us = frame_data->offset * 1000000 - (now_usec-start_usec);
// - (now_usec - start_usec);
Debug(2, "New delta_us now %" PRIu64 " - start %" PRIu64 " = %d offset %" PRId64 " - elapsed = %dusec",
now_usec, start_usec, now_usec-start_usec, frame_data->offset * 1000000, delta_us);
} else {
Debug(2, "No last frame_offset, no sleep");
delta_us = 0;
}
last_frame_offset = frame_data->offset * 1000000;
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if ( send_frame && (type != STREAM_MPEG) ) {
if ( delta_us > 0 ) {
if ( delta_us > MAX_SLEEP_USEC ) {
Debug(1, "Limiting sleep to %d because calculated sleep is too long %d", MAX_SLEEP_USEC, delta_us);
delta_us = MAX_SLEEP_USEC;
}
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usleep(delta_us);
Debug(3, "Done sleeping: %d usec", delta_us);
}
}
} else {
delta_us = ((1000000 * ZM_RATE_BASE)/((base_fps?base_fps:1)*(replay_rate?abs(replay_rate*2):2)));
Debug(2, "Sleeping %d because 1000000 * ZM_RATE_BASE(%d) / ( base_fps (%f), replay_rate(%d)",
(unsigned long)((1000000 * ZM_RATE_BASE)/((base_fps?base_fps:1)*abs(replay_rate*2))),
ZM_RATE_BASE,
(base_fps?base_fps:1),
(replay_rate?abs(replay_rate*2):0)
);
if ( delta_us > 0 ) {
if ( delta_us > MAX_SLEEP_USEC ) {
Debug(1, "Limiting sleep to %d because calculated sleep is too long %d", MAX_SLEEP_USEC, delta_us);
delta_us = MAX_SLEEP_USEC;
}
usleep(delta_us);
}
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// We are paused, so might be stepping
//if ( step != 0 )// Adding 0 is cheaper than an if 0
// curr_frame_id starts at 1 though, so we might skip the first frame?
curr_frame_id += step;
} // end if !paused
// Detects when we hit end of event and will load the next event or previous event
if ( checkEventLoaded() ) {
// Have change of event
// This next bit is to determine if we are in the current event time wise
// and whether to show an image saying how long until the next event.
if ( replay_rate > 0 ) {
// This doesn't make sense unless we have hit the end of the event.
time_to_event = event_data->frames[0].timestamp - curr_stream_time;
Debug(1, "replay rate(%d) time_to_event(%f)=frame timestamp:%f - curr_stream_time(%f)",
replay_rate, time_to_event,
event_data->frames[0].timestamp,
curr_stream_time);
} else if ( replay_rate < 0 ) {
time_to_event = curr_stream_time - event_data->frames[event_data->frame_count-1].timestamp;
Debug(1, "replay rate(%d) time_to_event(%f)=curr_stream_time(%f)-frame timestamp:%f",
replay_rate, time_to_event, curr_stream_time, event_data->frames[event_data->frame_count-1].timestamp);
} // end if forward or reverse
} // end if checkEventLoaded
} // end while ! zm_terminate
#if HAVE_LIBAVCODEC
if ( type == STREAM_MPEG )
delete vid_stream;
#endif // HAVE_LIBAVCODEC
closeComms();
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} // end void EventStream::runStream()
bool EventStream::send_file(const char *filepath) {
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static unsigned char temp_img_buffer[ZM_MAX_IMAGE_SIZE];
int img_buffer_size = 0;
uint8_t *img_buffer = temp_img_buffer;
FILE *fdj = NULL;
fdj = fopen(filepath, "rb");
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if ( !fdj ) {
Error("Can't open %s: %s", filepath, strerror(errno));
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return false;
}
#if HAVE_SENDFILE
static struct stat filestat;
if ( fstat(fileno(fdj), &filestat) < 0 ) {
fclose(fdj); /* Close the file handle */
Error("Failed getting information about file %s: %s", filepath, strerror(errno));
return false;
}
if ( !filestat.st_size ) {
fclose(fdj); /* Close the file handle */
Info("File size is zero. Unable to send raw frame %u: %s", curr_frame_id);
return false;
}
if ( 0 > fprintf(stdout, "Content-Length: %d\r\n\r\n", (int)filestat.st_size) ) {
fclose(fdj); /* Close the file handle */
Info("Unable to send raw frame %u: %s", curr_frame_id, strerror(errno));
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return false;
}
int rc = zm_sendfile(fileno(stdout), fileno(fdj), 0, (int)filestat.st_size);
if ( rc == (int)filestat.st_size ) {
// Success
fclose(fdj); /* Close the file handle */
return true;
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}
Warning("Unable to send raw frame %u: %s rc %d", curr_frame_id, strerror(errno), rc);
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#endif
img_buffer_size = fread(img_buffer, 1, sizeof(temp_img_buffer), fdj);
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fclose(fdj); /* Close the file handle */
if ( !img_buffer_size ) {
Info("Unable to read raw frame %u: %s", curr_frame_id, strerror(errno));
return false;
}
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return send_buffer(img_buffer, img_buffer_size);
} // end bool EventStream::send_file(const char * filepath)
bool EventStream::send_buffer(uint8_t* buffer, int size) {
if ( 0 > fprintf(stdout, "Content-Length: %d\r\n\r\n", size) ) {
Info("Unable to send raw frame %u: %s", curr_frame_id, strerror(errno));
return false;
}
int rc = fwrite(buffer, size, 1, stdout);
if ( 1 != rc ) {
Error("Unable to send raw frame %u: %s %d", curr_frame_id, strerror(errno), rc);
return false;
}
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return true;
} // end bool EventStream::send_buffer(uint8_t* buffer, int size)
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void EventStream::setStreamStart(
uint64_t init_event_id,
unsigned int init_frame_id=0) {
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loadInitialEventData(init_event_id, init_frame_id);
} // end void EventStream::setStreamStart(init_event_id,init_frame_id=0)
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void EventStream::setStreamStart(int monitor_id, time_t event_time) {
loadInitialEventData(monitor_id, event_time);
}