--- a
+++ b/sc2src/pcmdecoder.cpp
@@ -0,0 +1,113 @@
+/* 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 "pcmdecoder.h"
+#include "rcvqueue.h"
+#include "log.h"
+
+#include <string.h>
+
+#ifdef DEBUG_DECODER
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#endif
+
+using namespace std;
+
+PcmDecoder::PcmDecoder(bool needswap) : m_needswap(needswap)
+{
+ LOGDEB("Create PCM decoder\n");
+
+#ifdef DEBUG_DECODER
+ dumpfd = open("/tmp/sc2dump.pcm", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+#endif
+}
+
+PcmDecoder::~PcmDecoder()
+{
+ LOGDEB("Delete PCM decoder" << endl << flush);
+
+#ifdef DEBUG_DECODER
+ if (dumpfd > 0)
+ close(dumpfd);
+#endif
+}
+
+void PcmDecoder::start()
+{
+ LOGDEB("Start PCM decoder\n");
+}
+
+int PcmDecoder::decode(OhmMsgAudio& aMsg)
+{
+ unsigned int bytes = 0;
+ unsigned int allocbytes = 0;
+ char *buf = NULL;
+
+ if (aMsg.Audio().Bytes() == 0) {
+ if (aMsg.Halt()) {
+ LOGDEB("PcmDecoder::decode: empty message with halt flag set\n");
+ goto put_audio_message;
+ } else {
+ LOGDEB("PcmDecoder::decode: ignoring empty message\n");
+ return 0;
+ }
+ } else if (aMsg.Halt()) {
+ LOGDEB("PcmDecoder::decode: halt flag set in message\n");
+ }
+
+ bytes = aMsg.Audio().Bytes();
+ // We allocate a bit more space to avoir reallocations in the resampler
+ allocbytes = bytes + 100;
+ buf = (char *)malloc(allocbytes);
+ if (buf == 0) {
+ LOGERR("PcmDecoder::decode: can't allocate " <<
+ allocbytes << " bytes\n");
+ return -1;
+ }
+
+ if (m_needswap) {
+ copyswap((unsigned char *)buf, aMsg.Audio().Ptr(), bytes, aMsg.BitDepth());
+ } else {
+ memcpy(buf, aMsg.Audio().Ptr(), bytes);
+ }
+
+#ifdef DEBUG_DECODER
+ if (dumpfd > 0)
+ write(dumpfd, buf, bytes);
+#endif
+
+put_audio_message:
+ AudioMessage *ap = new
+ AudioMessage(aMsg.BitDepth(), aMsg.Channels(), aMsg.Samples(),
+ aMsg.SampleRate(), aMsg.Halt(), buf, allocbytes);
+
+ // There is nothing special we can do if put fails: no way to
+ // return status. Should we just exit ?
+ if (!audioqueue.put(ap, false)) {
+ LOGERR("sc2mpd: queue dead: exiting\n");
+ exit(1);
+ }
+
+ return bytes;
+}
+
+void PcmDecoder::finish()
+{
+ LOGDEB("Finish PCM decoder\n");
+}