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https://github.com/hrydgard/ppsspp.git
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Henrik RydgårdandClaude Opus 5
84bd8459e9
Another pass looking for gaps, all of it now recorded by audio/blocking/channels and audio/blocking/oneshot. sceAudioOneshotOutput was the last unimplemented entry in the module, returning "library not linked" to anyone who called it. It plays one buffer on a channel it never reserves, so the channel frees itself when the buffer runs out, and its argument checks are their own set: any positive sample count, aligned or not, no upper bound, a negative volume rejected rather than skipped, and no busy check at all. No game is known to use it; it is implemented because tracing it turned out to be cheap, not because anything needed it. The channels test confirms four behaviors: sceAudioChReserve(-1) skips a released channel that is still playing while a reserve of it succeeds, a second channel joining a running mixer doesn't lose a block unlike a first, mono counts down in the same 64-sample steps over the same time as stereo, and the panned blocking output has no extra delay on the high channels. Also: the SRC resampler now interpolates into the next buffer at a buffer join instead of holding the last sample, since the codec reads the two descriptors as one stream. That only shows up at non-native rates and no test can see it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "Common/File/Path.h"
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#include "sceAudio.h"
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struct AudioDebugStats {
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int buffered;
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int watermark;
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int bufsize;
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int underrunCount;
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int overrunCount;
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int instantSampleRate;
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int targetSampleRate;
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int lastPushSize;
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};
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// Easy interface for sceAudio to write to, to keep the complexity in check.
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void __AudioInit();
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void __AudioDoState(PointerWrap &p);
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void __AudioUpdate(bool resetRecording = false);
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void __AudioShutdown();
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void __AudioSetOutputFrequency(int freq);
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void __AudioSetSRCFrequency(int freq);
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// The driver's single enqueue point for channels 0-7. Returns the channel's reserved sample
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// count, or SCE_ERROR_AUDIO_CHANNEL_BUSY when a buffer is already in flight. A negative
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// volume means "leave it alone".
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u32 __AudioEnqueue(AudioChannel &chan, u32 samplePtr, int leftVol, int rightVol);
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// sceAudioOneshotOutput's variant: hands over a buffer without a reservation, so it carries its
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// own sample count and format and never reports busy.
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void __AudioEnqueueOneshot(AudioChannel &chan, u32 samplePtr, u32 sampleCount, u32 format, int leftVol, int rightVol);
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// Same, but parks the calling thread until the channel frees up. Only one thread can be
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// parked; a second one gets SCE_ERROR_AUDIO_CHANNEL_BUSY straight back.
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u32 __AudioEnqueueBlocking(AudioChannel &chan, u32 samplePtr, int leftVol, int rightVol);
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// Channel 8 - Output2, SRC and Vaudio all share it. Two buffers fit; a third caller gets
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// SCE_ERROR_AUDIO_CHANNEL_BUSY without waiting. A successful call waits for one buffer to
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// finish before returning, except when nothing was playing to begin with.
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u32 __AudioSRCEnqueueBlocking(AudioSRCChannel &chan, u32 samplePtr, int vol);
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// Hands the SRC channel a completion that the next caller can consume without waiting.
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void __AudioSRCSignal(AudioSRCChannel &chan);
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// What one SRC/Output2 output call costs, in cycles, before it does anything - see the comment
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// on the definition.
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int __AudioSRCCallCycles(const AudioSRCChannel &chan);
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// Wake everyone parked on the SRC channel with the given error. Mixer channels need no
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// equivalent: releasing one while a thread waits on it is refused outright.
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void __AudioWakeThreads(AudioSRCChannel &chan, int result);
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void __AudioCPUMHzChange();
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// AUDIO Dumping stuff
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void __StartLogAudio(const Path &filename);
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void __StopLogAudio();
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class WAVDump {
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public:
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static void Reset();
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};
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