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Audio: Make basic streaming WAV playback work.

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I had to solve a bunch of things simultaneously to make this work.
Refactor AWavLoader to be a streaming loader rather than a one-shot one.
The constructor parses the header, and if everything looks good, you can
repeatedly ask the AWavLoader for sample buffers until it runs out.

Also send a message from AudioServer when a buffer has finished playing.
That allows us to implement a blocking variant of play().

Use all of this in aplay to play WAV files chunk-at-a-time.
This is definitely not perfect and it's a little glitchy and skippy,
but I think it's a step in the right direction.
This commit is contained in:
Andreas Kling 2019-07-27 17:20:41 +02:00
parent a292d8cd5a
commit 426248098c
10 changed files with 88 additions and 64 deletions
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7
Servers/AudioServer/ASClientConnection.cpp
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@ -48,11 +48,6 @@ bool ASClientConnection::handle_message(const ASAPI_ClientMessage& message, cons
did_misbehave();
return false;
}
if (shared_buf->size() / sizeof(ASample) > 441000) {
did_misbehave();
return false;
}
samples.resize(shared_buf->size() / sizeof(ASample));
memcpy(samples.data(), shared_buf->data(), shared_buf->size());
}
@ -64,7 +59,7 @@ bool ASClientConnection::handle_message(const ASAPI_ClientMessage& message, cons
reply.playing_buffer.buffer_id = message.play_buffer.buffer_id;
post_message(reply);
m_mixer.queue(*this, adopt(*new ABuffer(move(samples))));
m_mixer.queue(*this, ABuffer::create_with_samples(move(samples)), message.play_buffer.buffer_id);
break;
}
case ASAPI_ClientMessage::Type::Invalid: