/* Copyright (C) 2015-2018 J.F.Dockes
* 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "pcmencoder.h"
#include "audioutil.h"
#include "log.h"
#ifdef DEBUG_ENCODER
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#endif
using namespace std;
PcmEncoder::PcmEncoder(AudioReader* audioReader, OhmSenderDriver *ohmSender,
unsigned packetBytes)
: AudioEncoder(audioReader, ohmSender, true, "PCM"),
m_packetBytes(packetBytes)
{
LOGDEB("New PCM encoder\n");
#ifdef DEBUG_ENCODER
dumpfd = open("/tmp/mpd2dump.pcm", O_WRONLY|O_CREAT|O_TRUNC, 0666);
#endif
}
PcmEncoder::~PcmEncoder()
{
LOGDEB("Delete PCM encoder\n");
#ifdef DEBUG_ENCODER
if (dumpfd > 0)
close(dumpfd);
#endif
}
void PcmEncoder::start()
{
LOGDEB("Start PCM encoder\n");
}
int PcmEncoder::encode(const unsigned char *buffer, unsigned num_bytes, bool halt)
{
if (num_bytes > 0) {
unsigned missing_bytes = m_packetBytes - num_bytes;
if (missing_bytes > 0) {
LOGDEB("PcmEncoder::encode: inserting " << missing_bytes << " bytes\n");
memset((void*)(buffer + num_bytes), 0, missing_bytes);
}
if (m_audioReader->needswap())
swapSamples((unsigned char*)buffer, m_audioReader->bytesPerSample(),
m_packetBytes / m_audioReader->bytesPerSample());
}
m_ohmSender->SendAudio((const TByte*)buffer, (TUint)num_bytes, (TBool)halt);
#ifdef DEBUG_ENCODER
if (dumpfd > 0)
write(dumpfd, buffer, num_bytes);
#endif
return num_bytes;
}
void PcmEncoder::finish()
{
LOGDEB("Finish PCM encoder\n");
}