added icecast output plugin (#47)

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@6929 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 193 insertions, 0 deletions

diff --git a/src/plugins/Output/shout/shoutoutput.cpp b/src/plugins/Output/shout/shoutoutput.cpp
new file mode 100644
index 000000000..bb0fd2bfc
--- /dev/null
+++ b/src/plugins/Output/shout/shoutoutput.cpp
@@ -0,0 +1,193 @@
+/***************************************************************************
+ *   Copyright (C) 2017 by Ilya Kotov                                      *
+ *   forkotov02@hotmail.ru                                                 *
+ *                                                                         *
+ *   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.         *
+ ***************************************************************************/
+
+#include <QFile>
+#include <unistd.h>
+#include "shoutoutput.h"
+
+ShoutOutput::ShoutOutput(ShoutClient *m)
+{
+    m_client = m;
+
+}
+
+ShoutOutput::~ShoutOutput()
+{
+    m_client->closeLater();
+    ogg_stream_clear(&m_os);
+    vorbis_block_clear(&m_vb);
+    vorbis_dsp_clear(&m_vd);
+    vorbis_comment_clear(&m_vc);
+    vorbis_info_clear(&m_vi);
+}
+
+bool ShoutOutput::initialize(quint32 freq, ChannelMap map, Qmmp::AudioFormat)
+{
+    vorbis_info_init(&m_vi);
+    vorbis_encode_init_vbr(&m_vi,2,freq,.4);
+
+    vorbis_comment_init(&m_vc);
+    //vorbis_comment_add_tag(&m_vc,"TITLE","encoder_example.c");
+
+    vorbis_analysis_init(&m_vd, &m_vi);
+    vorbis_block_init(&m_vd,&m_vb);
+
+    qsrand(time(NULL));
+    ogg_stream_init(&m_os,qrand());
+
+    configure(freq, map, Qmmp::PCM_FLOAT);
+    return m_client->open();
+}
+
+qint64 ShoutOutput::latency()
+{
+    return m_client->latency();
+}
+
+qint64 ShoutOutput::writeAudio(unsigned char *data, qint64 maxSize)
+{
+    int chan = channels();
+    int frames = maxSize / chan / sizeof(float);
+    float **buffer = vorbis_analysis_buffer(&m_vd, frames);
+
+    if(chan == 1)
+    {
+        memcpy(buffer[0], data, frames * sizeof(float));
+        memcpy(buffer[1], data, frames * sizeof(float));
+    }
+    else
+    {
+        for(int i = 0; i < frames; i++)
+        {
+            buffer[0][i] = *reinterpret_cast<float *>(data + (i * chan) * sizeof(float));
+            buffer[1][i] = *reinterpret_cast<float *>(data + (i * chan + 1) * sizeof(float));
+        }
+    }
+
+    vorbis_analysis_wrote(&m_vd, frames);
+
+    bool ok = true;
+
+    while(ok && vorbis_analysis_blockout(&m_vd, &m_vb) == 1)
+    {
+        // analysis, assume we want to use bitrate management
+        vorbis_analysis(&m_vb, NULL);
+        vorbis_bitrate_addblock(&m_vb);
+
+        while(ok && vorbis_bitrate_flushpacket(&m_vd, &m_op))
+        {
+            // weld the packet into the bitstream
+            ogg_stream_packetin(&m_os, &m_op);
+            // write out pages (if any)
+            bool eos = false;
+            while(!eos)
+            {
+                if(ogg_stream_pageout(&m_os, &m_og))
+                {
+
+                    if(!m_client->send(m_og.header, m_og.header_len))
+                    {
+                        ok = false;
+                        break;
+                    }
+
+                    if(!m_client->send(m_og.body, m_og.body_len))
+                    {
+                        ok = false;
+                        break;
+                    }
+
+                    eos = (ogg_page_eos(&m_og) != 0);
+                }
+                else
+                {
+                    eos = true;
+                }
+            }
+        }
+    }
+
+    if(!ok)
+    {
+        qWarning("ShoutOutput: trying to reconnect...");
+        m_client->close();
+        if(!m_client->open())
+            return -1;
+
+        qsrand(time(NULL));
+        ogg_stream_reset(&m_os);
+        ogg_stream_init(&m_os,qrand());
+
+        sendHeader();
+    }
+
+    return maxSize;
+}
+
+void ShoutOutput::drain()
+{
+    vorbis_analysis_wrote(&m_vd,0);
+}
+
+void ShoutOutput::reset()
+{}
+
+void ShoutOutput::setMetaData(const QMap<Qmmp::MetaData, QString> &metaData)
+{
+    vorbis_comment_clear(&m_vc);
+
+    static const struct
+    {
+        Qmmp::MetaData key;
+        const char *tag;
+    } tag_map[]  = {
+        { Qmmp::TITLE, "title"},
+        { Qmmp::ARTIST, "artist"},
+        { Qmmp::ALBUM, "album"},
+        { Qmmp::COMMENT, "comment"},
+        { Qmmp::GENRE, "genre"},
+        { Qmmp::TRACK, "tracknumber"},
+        { Qmmp::YEAR, "date"},
+        { Qmmp::COMPOSER, "composer"},
+        { Qmmp::DISCNUMBER, "discnumber"},
+        { Qmmp::UNKNOWN, 0}
+    };
+
+    int i = 0;
+    while(tag_map[i].key != Qmmp::UNKNOWN)
+    {
+        if(!metaData[tag_map[i].key].isEmpty())
+            vorbis_comment_add_tag(&m_vc, tag_map[i].tag, metaData[tag_map[i].key].toUtf8().constData());
+        i++;
+    }
+    sendHeader();
+}
+
+void ShoutOutput::sendHeader()
+{
+    ogg_packet header;
+    ogg_packet header_comm;
+    ogg_packet header_code;
+
+    vorbis_analysis_headerout(&m_vd, &m_vc, &header, &header_comm, &header_code);
+    ogg_stream_packetin(&m_os, &header); // automatically placed in its own page
+    ogg_stream_packetin(&m_os, &header_comm);
+    ogg_stream_packetin(&m_os, &header_code);
+}