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Linux: Alsa backend for the audio plugins. Didn't succeed in reducing latency though, but hopefully will work better than libao - shouldn't hang weirdly at underruns, I hope, like libao does. 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4240 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard 2009-09-09 21:26:33 +00:00
parent e0dfe17ca4
commit 987a6185e6
9 changed files with 297 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Source/Core/AudioCommon/Src/AOSoundStream.h
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@ -64,8 +64,7 @@ public:
#else
public:
AOSound(CMixer *mixer) :
SoundStream(mixer) {}
AOSound(CMixer *mixer) : SoundStream(mixer) {}
#endif
};

195
Source/Core/AudioCommon/Src/AlsaSoundStream.cpp Normal file
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@ -0,0 +1,195 @@
// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Common.h"
#include "Thread.h"
#include "AlsaSoundStream.h"
#define BUFFER_SIZE 4096
#define BUFFER_SIZE_BYTES (BUFFER_SIZE*2*2)
AlsaSound::AlsaSound(CMixer *mixer) : SoundStream(mixer), thread_data(0), handle(NULL)
{
mix_buffer = new u8[BUFFER_SIZE_BYTES];
}
AlsaSound::~AlsaSound()
{
delete [] mix_buffer;
}
static void *ThreadTrampoline(void *args)
{
reinterpret_cast<AlsaSound *>(args)->SoundLoop();
return NULL;
}
bool AlsaSound::Start()
{
thread = new Common::Thread(&ThreadTrampoline, this);
thread_data = 0;
return true;
}
void AlsaSound::Stop()
{
thread_data = 1;
delete thread;
thread = NULL;
}
void AlsaSound::Update()
{
// don't need to do anything here.
}
// Called on audio thread.
void AlsaSound::SoundLoop()
{
AlsaInit();
while (!thread_data)
{
int frames_to_deliver = 512;
m_mixer->Mix(reinterpret_cast<short *>(mix_buffer), frames_to_deliver);
int rc = snd_pcm_writei(handle, mix_buffer, frames_to_deliver);
if (rc == -EPIPE)
{
// Underrun
snd_pcm_prepare(handle);
}
else if (rc < 0)
{
ERROR_LOG(AUDIO, "writei fail: %s", snd_strerror(rc));
}
}
AlsaShutdown();
thread_data = 2;
}
bool AlsaSound::AlsaInit()
{
unsigned int sample_rate = m_mixer->GetSampleRate();
int err;
int dir;
snd_pcm_sw_params_t *swparams;
snd_pcm_hw_params_t *hwparams;
err = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0);
if (err < 0)
{
ERROR_LOG(AUDIO, "Audio open error: %s\n", snd_strerror(err));
return false;
}
snd_pcm_hw_params_alloca(&hwparams);
err = snd_pcm_hw_params_any(handle, hwparams);
if (err < 0)
{
ERROR_LOG(AUDIO, "Broken configuration for this PCM: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_hw_params_set_access(handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED);
if (err < 0)
{
ERROR_LOG(AUDIO, "Access type not available: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_hw_params_set_format(handle, hwparams, SND_PCM_FORMAT_S16_LE);
if (err < 0)
{
ERROR_LOG(AUDIO, "Sample format not available: %s\n", snd_strerror(err));
return false;
}
// This is weird - if I do pass in a pointer to a variable, like the header wants me to,
// the sample rate goes mad. It seems that the alsa header doesn't match the library we link in :(
// If anyone know why, i'd appreciate if you let me know - ector.
err = snd_pcm_hw_params_set_rate_near(handle, hwparams, (unsigned int *)sample_rate, &dir);
if (err < 0)
{
ERROR_LOG(AUDIO, "Rate not available: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_hw_params_set_channels(handle, hwparams, 2);
if (err < 0)
{
ERROR_LOG(AUDIO, "Channels count not available: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_hw_params(handle, hwparams);
if (err < 0)
{
ERROR_LOG(AUDIO, "Unable to install hw params: %s\n", snd_strerror(err));
return false;
}
snd_pcm_sw_params_alloca(&swparams);
err = snd_pcm_sw_params_current(handle, swparams);
if (err < 0)
{
ERROR_LOG(AUDIO, "cannot init sw params: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_sw_params_set_avail_min(handle, swparams, BUFFER_SIZE);
if (err < 0)
{
ERROR_LOG(AUDIO, "cannot set avail min: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_sw_params_set_start_threshold(handle, swparams, 0U);
if (err < 0)
{
ERROR_LOG(AUDIO, "cannot set start thresh: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_sw_params(handle, swparams);
if (err < 0)
{
ERROR_LOG(AUDIO, "cannot set sw params: %s\n", snd_strerror(err));
return false;
}
err = snd_pcm_prepare(handle);
if (err < 0)
{
ERROR_LOG(AUDIO, "Unable to prepare: %s\n", snd_strerror(err));
return false;
}
NOTICE_LOG(AUDIO, "ALSA successfully initialized.\n");
return true;
}
void AlsaSound::AlsaShutdown()
{
if (handle != NULL)
{
snd_pcm_drop(handle);
snd_pcm_close(handle);
handle = NULL;
}
}

69
Source/Core/AudioCommon/Src/AlsaSoundStream.h Normal file
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@ -0,0 +1,69 @@
// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _ALSA_SOUND_STREAM_H
#define _ALSA_SOUND_STREAM_H
#include <alsa/asoundlib.h>
#include "Common.h"
#include "SoundStream.h"
#include "Thread.h"
#define HAVE_ALSA 1
class AlsaSound : public SoundStream
{
#if defined(HAVE_ALSA) && HAVE_ALSA
public:
AlsaSound(CMixer *mixer);
virtual ~AlsaSound();
virtual bool Start();
virtual void SoundLoop();
virtual void Stop();
static bool isValid() {
return true;
}
virtual bool usesMixer() const {
return true;
}
virtual void Update();
private:
bool AlsaInit();
void AlsaShutdown();
u8 *mix_buffer;
Common::Thread *thread;
// 0 = continue
// 1 = shutdown
// 2 = done shutting down.
volatile int thread_data;
snd_pcm_t *handle;
#else
public:
AlsaSound(CMixer *mixer) : SoundStream(mixer) {}
#endif
};
#endif

10
Source/Core/AudioCommon/Src/AudioCommon.cpp
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@ -19,6 +19,7 @@
#include "Mixer.h"
#include "DSoundStream.h"
#include "AOSoundStream.h"
#include "AlsaSoundStream.h"
#include "NullSoundStream.h"
#include "OpenALStream.h"
@ -26,6 +27,7 @@ namespace AudioCommon
{
SoundStream *InitSoundStream(CMixer *mixer)
{
// This looks evil.
if (!mixer)
mixer = new CMixer();
@ -33,11 +35,14 @@ namespace AudioCommon
if (backend == BACKEND_DIRECTSOUND && DSound::isValid()) soundStream = new DSound(mixer, g_dspInitialize.hWnd);
if (backend == BACKEND_AOSOUND && AOSound::isValid()) soundStream = new AOSound(mixer);
if (backend == BACKEND_OPENAL && OpenALStream::isValid()) soundStream = new OpenALStream(mixer);
if (backend == BACKEND_ALSA && AlsaSound::isValid()) soundStream = new AlsaSound(mixer);
if (backend == BACKEND_NULL && NullSound::isValid()) soundStream = new NullSound(mixer);
if (soundStream != NULL) {
if (soundStream != NULL)
{
ac_Config.Update();
if (soundStream->Start()) {
if (soundStream->Start())
{
// Start the sound recording
/*
if (ac_Config.record) {
@ -81,6 +86,7 @@ namespace AudioCommon
if (DSound::isValid()) backends.push_back(BACKEND_DIRECTSOUND);
if (AOSound::isValid()) backends.push_back(BACKEND_AOSOUND);
if (OpenALStream::isValid()) backends.push_back(BACKEND_OPENAL);
if (AlsaSound::isValid()) backends.push_back(BACKEND_ALSA);
if (NullSound::isValid()) backends.push_back(BACKEND_NULL);
return backends;

2
Source/Core/AudioCommon/Src/AudioCommonConfig.h
View File

@ -25,7 +25,9 @@
#define BACKEND_DIRECTSOUND "DSound"
#define BACKEND_AOSOUND "AOSound"
#define BACKEND_OPENAL "OpenAL"
#define BACKEND_ALSA "ALSA"
#define BACKEND_NULL "NullSound"
struct AudioCommonConfig
{
bool m_EnableDTKMusic;

3
Source/Core/AudioCommon/Src/SConscript
View File

@ -18,4 +18,7 @@ if acenv['HAVE_OPENAL']:
if acenv['HAVE_AO']:
files += [ 'AOSoundStream.cpp' ]
# TODO: make conditional?
files += [ 'AlsaSoundStream.cpp' ]
acenv.StaticLibrary(env['local_libs'] + 'audiocommon', files)

6
Source/Core/Common/Src/Common.h
View File

@ -84,6 +84,7 @@
#define HAVE_WX 1
#define HAVE_SFML 1
#define HAVE_OPENAL 1
#define HAVE_ALSA 1
// it is VERY DANGEROUS to mix _SECURE_SCL=0 and _SECURE_SCL=1 compiled libraries.
// You will get bizarre crash bugs whenever you use STL.
@ -110,6 +111,11 @@
#define POSIX 1
#define MAX_PATH 260
#ifdef __APPLE__
#define HAVE_ALSA 0
#else
#define HAVE_ALSA 1
#endif
// Windows compatibility
#define __forceinline inline __attribute__((always_inline))

2
Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp
View File

@ -120,11 +120,13 @@ void CopyEFB(const BPCmd &bp, const EFBRectangle &rc, const u32 &address, const
{
// bpmem.zcontrol.pixel_format to PIXELFMT_Z24 is when the game wants to copy from ZBuffer (Zbuffer uses 24-bit Format)
if (!g_Config.bEFBCopyDisable)
{
if (g_Config.bCopyEFBToRAM) // To RAM
TextureConverter::EncodeToRam(address, fromZBuffer, isIntensityFmt, copyfmt, scaleByHalf, rc);
else // To OGL Texture
TextureMngr::CopyRenderTargetToTexture(address, fromZBuffer, isIntensityFmt, copyfmt, scaleByHalf, rc);
}
}
void RenderToXFB(const BPCmd &bp, const EFBRectangle &rc, const float &yScale, const float &xfbLines, u32 xfbAddr, const u32 &dstWidth, const u32 &dstHeight)
{

12
Source/Plugins/Plugin_VideoOGL/Src/DLCache.cpp
View File

@ -75,6 +75,8 @@ struct CachedDisplayList
frame_count = frameCount;
}
bool uncachable; // if set, this DL will always be interpreted. This gets set if hash ever changes.
int pass;
u32 dl_hash;
@ -87,8 +89,6 @@ struct CachedDisplayList
int frame_count;
bool uncachable; // if set, this DL will always be interpreted. This gets set if hash ever changes.
// ... Something containing cached vertex buffers here ...
// Compile the commands themselves down to native code.
@ -159,12 +159,12 @@ bool AnalyzeAndRunDisplayList(u32 address, int size, CachedDisplayList *dl)
// Execute
u32 Cmd2 = DataReadU32();
int transfer_size = ((Cmd2 >> 16) & 15) + 1;
u32 address = Cmd2 & 0xFFFF;
u32 xf_address = Cmd2 & 0xFFFF;
// TODO - speed this up. pshufb?
u32 data_buffer[16];
for (int i = 0; i < transfer_size; i++)
data_buffer[i] = DataReadU32();
LoadXFReg(transfer_size, address, data_buffer);
LoadXFReg(transfer_size, xf_address, data_buffer);
INCSTAT(stats.thisFrame.numXFLoads);
// Analyze
@ -311,13 +311,13 @@ bool CompileAndRunDisplayList(u32 address, int size, CachedDisplayList *dl)
// Execute
u32 Cmd2 = DataReadU32();
int transfer_size = ((Cmd2 >> 16) & 15) + 1;
u32 address = Cmd2 & 0xFFFF;
u32 xf_address = Cmd2 & 0xFFFF;
// TODO - speed this up. pshufb?
u8 *real_data_buffer = AllocStaticData(4 * transfer_size);
u32 *data_buffer = (u32 *)real_data_buffer;
for (int i = 0; i < transfer_size; i++)
data_buffer[i] = DataReadU32();
LoadXFReg(transfer_size, address, data_buffer);
LoadXFReg(transfer_size, xf_address, data_buffer);
INCSTAT(stats.thisFrame.numXFLoads);
// Compile