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/*
* audioreceiver.c
*/
#include "audioreceiver.h"
#include "postproc.h"
#include "audiorecorder.h"
/* --- cAudioReceiver ------------------------------------------------------- */
cAudioReceiver::cAudioReceiver(const cChannel* _channel)
:cReceiver(_channel, -2), cThread("audiorecorder-receiver")
{
SetPids(NULL);
AddPid(_channel->Apid(0));
channel = _channel;
active = false;
pes_sync = false;
device_number = -1;
recstat = recWait;
buffer = NULL;
rds = NULL;
postdata = NULL;
dsyslog("[audiorecorder]: receiver for channel <%s> created on pid %d "
"(%s, %s())", channel->Name(), channel->Apid(0), __FILE__,
__func__);
}
cAudioReceiver::~cAudioReceiver(void)
{
Activate(false);
DELETE(buffer);
DELETE(rds);
DELETE(postdata);
}
void cAudioReceiver::Receive(uchar *data, int length)
{
int ts_header_len, header_len, data_len, rb_len;
if (! active || data[0] != 0x47)
return;
/* check adaptation field */
switch (data[3] & 0x30) {
case 0x10:
/* no adaptation field, payload only */
ts_header_len = 4;
break;
case 0x30:
/* adaptation field followed by payload */
ts_header_len = data[4] + 5;
break;
default:
return;
}
header_len = ts_header_len;
/* check payload unit start indicator */
if ((data[1] & 0x40) == 0x40) {
/* ts-header is followed by a pes-header */
header_len += data[ts_header_len + 8] + 9;
pes_sync = true;
}
if (! pes_sync)
return;
/* put mp2-data into the ringbuffer */
data_len = length - header_len;
rb_len = buffer->Put(data + header_len, data_len);
if (data_len != rb_len) {
buffer->ReportOverflow(data_len - rb_len);
dsyslog("[audiorecorder]: buffer overflow (%s, %s())", __FILE__,
__func__);
buffer->Clear();
}
}
void cAudioReceiver::Activate(bool on)
{
if (on) {
if (! active) {
active = true;
Start();
}
}
else if (active) {
active = false;
Cancel(3);
}
}
void cAudioReceiver::Action(void)
{
abuffer input_buf;
dsyslog("[audiorecorder]: receiving from channel <%s> (%s, %s())",
channel->Name(), __FILE__, __func__);
buffer = new cRingBufferLinear(KB(100), KB(5), true, NULL);
postdata = new cPostData(channel);
rds = new cRds(postdata);
while (active) {
input_buf.data = buffer->Get(input_buf.length);
input_buf.offset = 0;
if (! input_buf.data) {
usleep(10000);
continue;
}
get_mpa_frame(&input_buf, &mpa_frame, channel->Name());
while (active && mpa_frame.data) {
set_recstat_rds();
if (outfile.is_open())
outfile.write((char *)mpa_frame.data,
mpa_frame.length);
input_buf.offset += mpa_frame.length;
get_mpa_frame(&input_buf, &mpa_frame, channel->Name());
}
buffer->Del(input_buf.offset);
}
if (outfile.is_open()) {
outfile.close();
if (! postdata->get_recpath().empty())
remove(postdata->get_recpath().c_str());
}
pes_sync = false;
device_number = -1;
recstat = recWait;
DELETE(rds);
DELETE(postdata);
DELETE(buffer);
dsyslog("[audiorecorder]: stopped receiving from channel <%s> "
"(%s, %s())", channel->Name(), __FILE__, __func__);
}
bool cAudioReceiver::is_attached(int attached_device_number)
{
if (device_number < 0)
return false;
if (attached_device_number != device_number &&
attached_device_number != -1)
return false;
return true;
}
bool cAudioReceiver::is_recording(void)
{
if (recstat != recStart && recstat != recRun)
return false;
return true;
}
void cAudioReceiver::set_recstat_rds(void)
{
rds->put_data(mpa_frame.data, mpa_frame.length);
while(rds->set_next_frame()) {
recstat = rds->decode_frame();
control_track();
}
}
void cAudioReceiver::control_track(void)
{
//LT
struct stat dir;
std::string recdir;
//
switch (recstat) {
case recStart:
if (outfile.is_open())
outfile.close();
postdata->start_track();
//LT
recdir = cPluginAudiorecorder::get_recdir();
stat(recdir.c_str(), &dir);
if (! (dir.st_mode & S_IFDIR)) {
dsyslog("[audiorecorder]: %s (given with the parameter "
" --recdir|-r) isn't a directory", recdir.c_str());
return;
}
if (access(recdir.c_str(), R_OK | W_OK) != 0) {
dsyslog("[audiorecorder]: can't access %s (given with the "
"parameter --recdir|-r)", recdir.c_str());
return;
}
//
outfile.open(postdata->get_recpath().c_str());
//LT
if (!outfile.is_open())
return;
//
dsyslog("[audiorecorder]: started recording track (%s) on <%s> "
"(%s, %s())", postdata->get_recpath().c_str(),
channel->Name(), __FILE__, __func__);
break;
case recStop:
if (outfile.is_open())
outfile.close();
dsyslog("[audiorecorder]: stopped recording track (%s) on <%s> "
"(%s, %s())", postdata->get_recpath().c_str(),
channel->Name(), __FILE__, __func__);
postdata->stop_track(mpa_frame.bit_rate, mpa_frame.sample_rate,
mpa_frame.channels, mpa_frame.length);
if (postdata->get_path().empty()) {
remove(postdata->get_recpath().c_str());
dsyslog("[audiorecorder]: track (%s) removed"
" (%s, %s())",
postdata->get_recpath().c_str(),
__FILE__, __func__);
} else {
cPostproc::add_track(postdata);
}
postdata->clear();
break;
default:
break;
}
}
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