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Implement GetPosition for OpenAL streams, and display it in the stats

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This commit is contained in:
Chris Robinson 2014-06-25 20:03:24 -07:00
parent d761dd1ff6
commit fd25ec2a62
1 changed files with 65 additions and 22 deletions
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87
src/sound/oalsound.cpp
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@ -146,6 +146,7 @@ class OpenALSoundStream : public SoundStream
ALsizei SampleRate;
ALenum Format;
ALsizei FrameSize;
static const int BufferCount = 4;
ALuint Buffers[BufferCount];
@ -308,15 +309,31 @@ public:
if(!Decoder->seek(ms_pos))
return false;
// Stop the source so that all buffers become processed, then call
// IsEnded() to refill and restart the source queue with the new
// position.
alSourceStop(Source);
getALError();
return true;
return !IsEnded();
}
virtual unsigned int GetPosition()
{
// FIXME: Decoder position - amount buffered + source offset
return 0;
ALint offset, queued, state;
alGetSourcei(Source, AL_SAMPLE_OFFSET, &offset);
alGetSourcei(Source, AL_BUFFERS_QUEUED, &queued);
alGetSourcei(Source, AL_SOURCE_STATE, &state);
if(getALError() != AL_NO_ERROR)
return 0;
size_t pos = Decoder->getSampleOffset();
if(state != AL_STOPPED)
{
size_t rem = queued*(Data.size()/FrameSize) - offset;
if(pos > rem) pos -= rem;
else pos = 0;
}
return (unsigned int)(pos * 1000.0 / SampleRate);
}
virtual bool IsEnded()
@ -372,12 +389,17 @@ public:
{
FString stats;
ALfloat volume;
ALint boffset;
ALint offset;
ALint processed;
ALint queued;
ALint state;
size_t pos;
ALenum err;
alGetSourcef(Source, AL_GAIN, &volume);
alGetSourcei(Source, AL_BYTE_OFFSET, &boffset);
alGetSourcei(Source, AL_SAMPLE_OFFSET, &offset);
alGetSourcei(Source, AL_BUFFERS_PROCESSED, &processed);
alGetSourcei(Source, AL_BUFFERS_QUEUED, &queued);
alGetSourcei(Source, AL_SOURCE_STATE, &state);
if((err=alGetError()) != AL_NO_ERROR)
{
@ -388,8 +410,18 @@ public:
stats = (state == AL_INITIAL) ? "Buffering" : (state == AL_STOPPED) ? "Underrun" :
(state == AL_PLAYING || state == AL_PAUSED) ? "Ready" : "Unknown state";
stats.AppendFormat(",%3lu%% buffered", 100 - 100*boffset/(BufferCount*Data.size()));
stats.AppendFormat(", %d%%", int(volume * 100));
pos = Decoder->getSampleOffset();
if(state == AL_STOPPED)
offset = BufferCount * (Data.size()/FrameSize);
else
{
size_t rem = queued*(Data.size()/FrameSize) - offset;
if(pos > rem) pos -= rem;
else pos = 0;
}
stats.AppendFormat(",%3lu%% buffered", 100 - 100*offset/(BufferCount*(Data.size()/FrameSize)));
stats.AppendFormat(", %zu ms", pos);
if(state == AL_PAUSED)
stats += ", paused";
if(state == AL_PLAYING)
@ -415,16 +447,22 @@ public:
if((flags&Mono)) Format = AL_FORMAT_MONO8;
else Format = AL_FORMAT_STEREO8;
}
else if(!(flags&(Bits32|Float)))
else if((flags&Float))
{
if(alIsExtensionPresent("AL_EXT_FLOAT32"))
{
if((flags&Mono)) Format = AL_FORMAT_MONO_FLOAT32;
else Format = AL_FORMAT_STEREO_FLOAT32;
}
}
else if((flags&Bits32))
{
}
else
{
if((flags&Mono)) Format = AL_FORMAT_MONO16;
else Format = AL_FORMAT_STEREO16;
}
else if((flags&Float) && alIsExtensionPresent("AL_EXT_FLOAT32"))
{
if((flags&Mono)) Format = AL_FORMAT_MONO_FLOAT32;
else Format = AL_FORMAT_STEREO_FLOAT32;
}
if(Format == AL_NONE)
{
@ -432,21 +470,21 @@ public:
return false;
}
int smpsize = 1;
FrameSize = 1;
if((flags&Bits8))
smpsize *= 1;
FrameSize *= 1;
else if((flags&(Bits32|Float)))
smpsize *= 4;
FrameSize *= 4;
else
smpsize *= 2;
FrameSize *= 2;
if((flags&Mono))
smpsize *= 1;
FrameSize *= 1;
else
smpsize *= 2;
FrameSize *= 2;
buffbytes += smpsize-1;
buffbytes -= buffbytes%smpsize;
buffbytes += FrameSize-1;
buffbytes -= buffbytes%FrameSize;
Data.resize(buffbytes);
return true;
@ -464,6 +502,7 @@ public:
Callback = DecoderCallback;
UserData = NULL;
Format = AL_NONE;
FrameSize = 1;
ChannelConfig chans;
SampleType type;
@ -474,12 +513,16 @@ public:
{
if(type == SampleType_UInt8) Format = AL_FORMAT_MONO8;
if(type == SampleType_Int16) Format = AL_FORMAT_MONO16;
FrameSize *= 1;
}
if(chans == ChannelConfig_Stereo)
{
if(type == SampleType_UInt8) Format = AL_FORMAT_STEREO8;
if(type == SampleType_Int16) Format = AL_FORMAT_STEREO16;
FrameSize *= 2;
}
if(type == SampleType_UInt8) FrameSize *= 1;
if(type == SampleType_Int16) FrameSize *= 2;
if(Format == AL_NONE)
{
@ -489,7 +532,7 @@ public:
SampleRate = srate;
Looping = loop;
Data.resize((size_t)(0.2 * SampleRate) * 4);
Data.resize((size_t)(0.2 * SampleRate) * FrameSize);
return true;
}