raze-gles/libraries/zmusic/musicformats/music_stream.cpp

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2019-11-10 22:58:51 +00:00
/*
** music_stream.cpp
** Plays a streaming song from a StreamSource
**
**---------------------------------------------------------------------------
** Copyright 2008 Randy Heit
** Copyright 2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
*/
#include "zmusic/musinfo.h"
#include "streamsources/streamsource.h"
class StreamSong : public MusInfo
{
public:
StreamSong (StreamSource *source);
~StreamSong ();
void Play (bool looping, int subsong) override;
void Pause () override;
void Resume () override;
void Stop () override;
bool IsPlaying () override;
bool IsValid () const override { return m_Source != nullptr; }
bool SetPosition (unsigned int pos) override;
bool SetSubsong (int subsong) override;
std::string GetStats() override;
void ChangeSettingInt(const char *name, int value) override { if (m_Source) m_Source->ChangeSettingInt(name, value); }
void ChangeSettingNum(const char *name, double value) override { if (m_Source) m_Source->ChangeSettingNum(name, value); }
void ChangeSettingString(const char *name, const char *value) override { if(m_Source) m_Source->ChangeSettingString(name, value); }
bool ServiceStream(void* buff, int len) override;
SoundStreamInfo GetStreamInfo() const override { return m_Source->GetFormat(); }
protected:
StreamSource *m_Source = nullptr;
};
void StreamSong::Play (bool looping, int subsong)
{
m_Status = STATE_Stopped;
m_Looping = looping;
if (m_Source != nullptr)
{
m_Source->SetPlayMode(looping);
m_Source->SetSubsong(subsong);
if (m_Source->Start())
{
m_Status = STATE_Playing;
}
}
}
void StreamSong::Pause ()
{
m_Status = STATE_Paused;
}
void StreamSong::Resume ()
{
m_Status = STATE_Playing;
}
void StreamSong::Stop ()
{
m_Status = STATE_Stopped;
}
StreamSong::~StreamSong ()
{
Stop ();
if (m_Source != nullptr)
{
delete m_Source;
m_Source = nullptr;
}
}
StreamSong::StreamSong (StreamSource *source)
{
m_Source = source;
}
bool StreamSong::IsPlaying ()
{
if (m_Status != STATE_Stopped)
{
return true;
}
return false;
}
//
// StreamSong :: SetPosition
//
// Sets the position in ms.
bool StreamSong::SetPosition(unsigned int pos)
{
if (m_Source != nullptr)
{
return m_Source->SetPosition(pos);
}
else
{
return false;
}
}
bool StreamSong::SetSubsong(int subsong)
{
return m_Source->SetSubsong(subsong);
}
std::string StreamSong::GetStats()
{
std::string s1, s2;
if (m_Source != NULL)
{
auto stat = m_Source->GetStats();
s2 = stat.c_str();
}
if (s1.empty() && s2.empty()) return "No song loaded\n";
if (s1.empty()) return s2;
if (s2.empty()) return s1;
return s1 + "\n" + s2;
}
bool StreamSong::ServiceStream (void *buff, int len)
{
bool written = m_Source->GetData(buff, len);
if (!written)
{
memset((char*)buff, 0, len);
return false;
}
return true;
}
MusInfo *OpenStreamSong(StreamSource *source)
{
auto song = new StreamSong(source);
if (song->IsValid()) return song;
delete song;
return nullptr;
}