386 lines
8.5 KiB
C++
386 lines
8.5 KiB
C++
/**
|
|
* @file streamingaudio_fmod.cpp
|
|
* @brief LLStreamingAudio_FMOD implementation
|
|
*
|
|
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
|
|
* Second Life Viewer Source Code
|
|
* Copyright (C) 2010, Linden Research, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License only.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
#include "linden_common.h"
|
|
|
|
#include "llmath.h"
|
|
|
|
#include "fmod.h"
|
|
#include "fmod_errors.h"
|
|
|
|
#include "llstreamingaudio_fmod.h"
|
|
|
|
|
|
class LLAudioStreamManagerFMOD
|
|
{
|
|
public:
|
|
LLAudioStreamManagerFMOD(const std::string& url);
|
|
int startStream();
|
|
bool stopStream(); // Returns true if the stream was successfully stopped.
|
|
bool ready();
|
|
|
|
const std::string& getURL() { return mInternetStreamURL; }
|
|
|
|
int getOpenState();
|
|
|
|
FSOUND_STREAM* getStream() { return mInternetStream; }
|
|
protected:
|
|
FSOUND_STREAM* mInternetStream;
|
|
bool mReady;
|
|
|
|
std::string mInternetStreamURL;
|
|
};
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Internet Streaming
|
|
//---------------------------------------------------------------------------
|
|
LLStreamingAudio_FMOD::LLStreamingAudio_FMOD() :
|
|
mCurrentInternetStreamp(NULL),
|
|
mFMODInternetStreamChannel(-1),
|
|
mGain(1.0f),
|
|
mMetaData(NULL)
|
|
{
|
|
// Number of milliseconds of audio to buffer for the audio card.
|
|
// Must be larger than the usual Second Life frame stutter time.
|
|
FSOUND_Stream_SetBufferSize(200);
|
|
|
|
// Here's where we set the size of the network buffer and some buffering
|
|
// parameters. In this case we want a network buffer of 16k, we want it
|
|
// to prebuffer 40% of that when we first connect, and we want it
|
|
// to rebuffer 80% of that whenever we encounter a buffer underrun.
|
|
|
|
// Leave the net buffer properties at the default.
|
|
//FSOUND_Stream_Net_SetBufferProperties(20000, 40, 80);
|
|
}
|
|
|
|
|
|
LLStreamingAudio_FMOD::~LLStreamingAudio_FMOD()
|
|
{
|
|
// nothing interesting/safe to do.
|
|
}
|
|
|
|
signed char F_CALLBACKAPI MetaDataCallback(char *name, char *value, void *userdata)
|
|
{
|
|
std::string szName(name);
|
|
if(szName == "TITLE" || szName=="TIT2" || szName=="Title")
|
|
(*(LLSD*)userdata)["TITLE"] = value;
|
|
if(szName == "ARTIST" || szName=="TPE1" || szName =="WM/AlbumTitle")
|
|
(*(LLSD*)userdata)["ARTIST"] = value;
|
|
else
|
|
(*(LLSD*)userdata)[std::string(name)] = value;
|
|
return true;
|
|
}
|
|
|
|
void LLStreamingAudio_FMOD::start(const std::string& url)
|
|
{
|
|
//if (!mInited)
|
|
//{
|
|
// llwarns << "startInternetStream before audio initialized" << llendl;
|
|
// return;
|
|
//}
|
|
|
|
// "stop" stream but don't clear url, etc. in case url == mInternetStreamURL
|
|
stop();
|
|
|
|
if (!url.empty())
|
|
{
|
|
llinfos << "Starting internet stream: " << url << llendl;
|
|
mCurrentInternetStreamp = new LLAudioStreamManagerFMOD(url);
|
|
mURL = url;
|
|
if(mCurrentInternetStreamp->getStream())
|
|
{
|
|
mMetaData = new LLSD;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
llinfos << "Set internet stream to null" << llendl;
|
|
mURL.clear();
|
|
}
|
|
}
|
|
|
|
|
|
void LLStreamingAudio_FMOD::update()
|
|
{
|
|
// Kill dead internet streams, if possible
|
|
std::list<LLAudioStreamManagerFMOD *>::iterator iter;
|
|
for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
|
|
{
|
|
LLAudioStreamManagerFMOD *streamp = *iter;
|
|
if (streamp->stopStream())
|
|
{
|
|
llinfos << "Closed dead stream" << llendl;
|
|
delete streamp;
|
|
mDeadStreams.erase(iter++);
|
|
}
|
|
else
|
|
{
|
|
iter++;
|
|
}
|
|
}
|
|
|
|
// Don't do anything if there are no streams playing
|
|
if (!mCurrentInternetStreamp)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int open_state = mCurrentInternetStreamp->getOpenState();
|
|
|
|
if (!open_state)
|
|
{
|
|
// Stream is live
|
|
|
|
// start the stream if it's ready
|
|
if (mFMODInternetStreamChannel < 0)
|
|
{
|
|
mFMODInternetStreamChannel = mCurrentInternetStreamp->startStream();
|
|
|
|
if (mFMODInternetStreamChannel != -1)
|
|
{
|
|
// Reset volume to previously set volume
|
|
setGain(getGain());
|
|
FSOUND_SetPaused(mFMODInternetStreamChannel, false);
|
|
if(mCurrentInternetStreamp->getStream() && mMetaData)
|
|
{
|
|
FSOUND_Stream_Net_SetMetadataCallback(mCurrentInternetStreamp->getStream(),&MetaDataCallback, mMetaData);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
switch(open_state)
|
|
{
|
|
default:
|
|
case 0:
|
|
// success
|
|
break;
|
|
case -1:
|
|
// stream handle is invalid
|
|
llwarns << "InternetStream - invalid handle" << llendl;
|
|
stop();
|
|
return;
|
|
case -2:
|
|
// opening
|
|
break;
|
|
case -3:
|
|
// failed to open, file not found, perhaps
|
|
llwarns << "InternetStream - failed to open" << llendl;
|
|
stop();
|
|
return;
|
|
case -4:
|
|
// connecting
|
|
break;
|
|
case -5:
|
|
// buffering
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
void LLStreamingAudio_FMOD::stop()
|
|
{
|
|
if(mMetaData)
|
|
{
|
|
if(mCurrentInternetStreamp && mCurrentInternetStreamp->getStream())
|
|
FSOUND_Stream_Net_SetMetadataCallback(mCurrentInternetStreamp->getStream(),NULL,NULL);
|
|
delete mMetaData;
|
|
mMetaData = NULL;
|
|
}
|
|
if (mFMODInternetStreamChannel != -1)
|
|
{
|
|
FSOUND_SetPaused(mFMODInternetStreamChannel, true);
|
|
FSOUND_SetPriority(mFMODInternetStreamChannel, 0);
|
|
mFMODInternetStreamChannel = -1;
|
|
}
|
|
|
|
if (mCurrentInternetStreamp)
|
|
{
|
|
llinfos << "Stopping internet stream: " << mCurrentInternetStreamp->getURL() << llendl;
|
|
if (mCurrentInternetStreamp->stopStream())
|
|
{
|
|
delete mCurrentInternetStreamp;
|
|
}
|
|
else
|
|
{
|
|
llwarns << "Pushing stream to dead list: " << mCurrentInternetStreamp->getURL() << llendl;
|
|
mDeadStreams.push_back(mCurrentInternetStreamp);
|
|
}
|
|
mCurrentInternetStreamp = NULL;
|
|
//mURL.clear();
|
|
}
|
|
}
|
|
|
|
void LLStreamingAudio_FMOD::pause(int pauseopt)
|
|
{
|
|
if (pauseopt < 0)
|
|
{
|
|
pauseopt = mCurrentInternetStreamp ? 1 : 0;
|
|
}
|
|
|
|
if (pauseopt)
|
|
{
|
|
if (mCurrentInternetStreamp)
|
|
{
|
|
stop();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
start(getURL());
|
|
}
|
|
}
|
|
|
|
|
|
// A stream is "playing" if it has been requested to start. That
|
|
// doesn't necessarily mean audio is coming out of the speakers.
|
|
int LLStreamingAudio_FMOD::isPlaying()
|
|
{
|
|
if (mCurrentInternetStreamp)
|
|
{
|
|
return 1; // Active and playing
|
|
}
|
|
else if (!mURL.empty())
|
|
{
|
|
return 2; // "Paused"
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
F32 LLStreamingAudio_FMOD::getGain()
|
|
{
|
|
return mGain;
|
|
}
|
|
|
|
|
|
std::string LLStreamingAudio_FMOD::getURL()
|
|
{
|
|
return mURL;
|
|
}
|
|
|
|
|
|
void LLStreamingAudio_FMOD::setGain(F32 vol)
|
|
{
|
|
mGain = vol;
|
|
|
|
if (mFMODInternetStreamChannel != -1)
|
|
{
|
|
vol = llclamp(vol * vol, 0.f, 1.f);
|
|
int vol_int = llround(vol * 255.f);
|
|
FSOUND_SetVolumeAbsolute(mFMODInternetStreamChannel, vol_int);
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////
|
|
// manager of possibly-multiple internet audio streams
|
|
|
|
LLAudioStreamManagerFMOD::LLAudioStreamManagerFMOD(const std::string& url) :
|
|
mInternetStream(NULL),
|
|
mReady(false)
|
|
{
|
|
mInternetStreamURL = url;
|
|
mInternetStream = FSOUND_Stream_Open(url.c_str(), FSOUND_NORMAL | FSOUND_NONBLOCKING, 0, 0);
|
|
if (!mInternetStream)
|
|
{
|
|
llwarns << "Couldn't open fmod stream, error "
|
|
<< FMOD_ErrorString(FSOUND_GetError())
|
|
<< llendl;
|
|
mReady = false;
|
|
return;
|
|
}
|
|
|
|
mReady = true;
|
|
}
|
|
|
|
int LLAudioStreamManagerFMOD::startStream()
|
|
{
|
|
// We need a live and opened stream before we try and play it.
|
|
if (!mInternetStream || getOpenState())
|
|
{
|
|
llwarns << "No internet stream to start playing!" << llendl;
|
|
return -1;
|
|
}
|
|
|
|
// Make sure the stream is set to 2D mode.
|
|
FSOUND_Stream_SetMode(mInternetStream, FSOUND_2D);
|
|
|
|
return FSOUND_Stream_PlayEx(FSOUND_FREE, mInternetStream, NULL, true);
|
|
}
|
|
|
|
bool LLAudioStreamManagerFMOD::stopStream()
|
|
{
|
|
if (mInternetStream)
|
|
{
|
|
int read_percent = 0;
|
|
int status = 0;
|
|
int bitrate = 0;
|
|
unsigned int flags = 0x0;
|
|
FSOUND_Stream_Net_GetStatus(mInternetStream, &status, &read_percent, &bitrate, &flags);
|
|
|
|
bool close = true;
|
|
switch (status)
|
|
{
|
|
case FSOUND_STREAM_NET_CONNECTING:
|
|
close = false;
|
|
break;
|
|
case FSOUND_STREAM_NET_NOTCONNECTED:
|
|
case FSOUND_STREAM_NET_BUFFERING:
|
|
case FSOUND_STREAM_NET_READY:
|
|
case FSOUND_STREAM_NET_ERROR:
|
|
default:
|
|
close = true;
|
|
}
|
|
|
|
if (close)
|
|
{
|
|
FSOUND_Stream_Close(mInternetStream);
|
|
mInternetStream = NULL;
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
int LLAudioStreamManagerFMOD::getOpenState()
|
|
{
|
|
int open_state = FSOUND_Stream_GetOpenState(mInternetStream);
|
|
return open_state;
|
|
}
|