SEGAy/lindbergh-loader
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Simplify sound and add windows instructions

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This commit is contained in:
Bobby Dilley 2023-11-27 11:10:37 +00:00
parent f2c3b79c2d
commit ef1a152983
2 changed files with 113 additions and 127 deletions
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71
docs/windows.md Normal file
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@ -0,0 +1,71 @@
# Windows Installation Instructions
Please note that this software is still in the alpha phase, and it's very unlikely any games will be fully playable.
## Requirements
- Windows 10 build 2004 or higher
- WSL2
- Ubuntu 22.04
## Building & Installation
Launch Ubuntu 22.04 and and reset the root password.
```
sudo passwd root
su root
```
Now that you're in the root user you can install the dependencies:
```
sudo dpkg --add-architecture i386
sudo apt update && apt list --upgradable && apt upgrade
sudo apt install wsl g++ mesa-utils cmake make-guile gcc-multilib xorg-dev libxmu6:i386 libstdc++5:i386 libopenal-dev:i386 freeglut3:i386 freeglut3-dev:i386 libglew-dev
```
Now you will need to build libalut (the audio library) from source:
```
git clone --recursive https://github.com/vancegroup/freealut.git
cd freealut
cmake . -DCMAKE_INSTALL_PREFIX:STRING="/usr" -DCMAKE_C_FLAGS:STRING="-m32 -O2"
make
make install
```
Now you should add yourself to the following groups.
```
sudo addgroup $USER dialout
sudo addgroup $USER input
```
Now you can clone and build the lindbergh loader repository.
```
cd
git clone https://github.com/bobbydilley/lindbergh-loader.git
cd lindbergh-loader
make
```
You should then see the 3 .so files produced in the `build` directory.
## Launching a game
You should copy the 3 files from the `lindbergh-loader/build` directory to the directory with the game elf in.
Then open powershell in windows and do the following steps.
```
cd C:\rom\hod4\elf
bash
cp ~/lindbergh-loader/build/* .
LD_PRELOAD=lindbergh.so LD_LIBRARY_PATH=$LD_LIBRARY_PATH:. ./hod4M.elf
```
## Thanks
Thanks to dorminirko for the testing and writing of the original guide.

169
src/libsegaapi/segaapi.c
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@ -10,11 +10,12 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include "segaapi.h"
#include "tsf.h"
//#define DEBUG_OUTPUT
// #define DEBUG_OUTPUT
const GUID EAX_NULL_GUID;
const GUID EAX_FREQUENCYSHIFTER_EFFECT;
@ -78,122 +79,41 @@ void dbgPrint(const char *format, ...)
}
#endif
ALsizei FramesToBytes(ALsizei size, ALenum channels, ALenum type)
/**
* Returns the OpenAL Format Enum from the sampleFormat and channels
* of the SEGA API.
*
* @param sampleFormat SEGA API Sample Format
* @param channels Amount of channels to use
* @returns The OpenAL Format
*/
ALenum getAlFormat(unsigned int sampleFormat, unsigned int channels)
{
switch (channels)
{
case AL_MONO_SOFT:
size *= 1;
break;
case AL_STEREO_SOFT:
size *= 2;
break;
case AL_REAR_SOFT:
size *= 2;
break;
case AL_QUAD_SOFT:
size *= 4;
break;
case AL_5POINT1_SOFT:
size *= 6;
break;
case AL_6POINT1_SOFT:
size *= 7;
break;
case AL_7POINT1_SOFT:
size *= 8;
break;
}
switch (type)
{
case AL_BYTE_SOFT:
size *= sizeof(ALbyte);
break;
case AL_UNSIGNED_BYTE_SOFT:
size *= sizeof(ALubyte);
break;
case AL_SHORT_SOFT:
size *= sizeof(ALshort);
break;
case AL_UNSIGNED_SHORT_SOFT:
size *= sizeof(ALushort);
break;
case AL_INT_SOFT:
size *= sizeof(ALint);
break;
case AL_UNSIGNED_INT_SOFT:
size *= sizeof(ALuint);
break;
case AL_FLOAT_SOFT:
size *= sizeof(ALfloat);
break;
case AL_DOUBLE_SOFT:
size *= sizeof(ALdouble);
break;
}
return size;
}
static unsigned int bufferSampleSize(SEGAContext *context)
{
return context->channels * ((context->sampleFormat == SIGNED_16PCM) ? 2 : 1);
}
static void updateBufferLoop(SEGAContext *context)
{
return;
if (context == NULL)
return;
unsigned int sampleSize = bufferSampleSize(context);
alSourcei(context->alSource, AL_BUFFER, AL_NONE);
/*
FIXME: Re-enable, only crashed before - so fix this too..
ALint loopPoints[] = { buffer->startLoop / sampleSize, buffer->endLoop / sampleSize };
alBufferiv(buffer->alBuffer,AL_LOOP_POINTS_SOFT,loopPoints);
CHECK();
*/
}
static void updateBufferData(SEGAContext *context, unsigned int offset, size_t length)
{
ALenum alFormat = -1;
ALenum alChannels = -1;
ALenum alType;
switch (context->sampleFormat)
switch (sampleFormat)
{
case UNSIGNED_8PCM: /* Unsigned (offset 128) 8-bit PCM */
alType = AL_BYTE_SOFT;
switch (context->channels)
switch (channels)
{
case 1:
alFormat = AL_MONO8_SOFT;
alChannels = AL_MONO_SOFT;
break;
case 2:
alFormat = AL_STEREO8_SOFT;
alChannels = AL_STEREO_SOFT;
break;
default:
break;
}
break;
case SIGNED_16PCM: /* Signed 16-bit PCM */
alType = AL_SHORT_SOFT;
switch (context->channels)
switch (channels)
{
case 1:
alFormat = AL_MONO16_SOFT;
alChannels = AL_MONO_SOFT;
break;
case 2:
alFormat = AL_STEREO16_SOFT;
alChannels = AL_STEREO_SOFT;
break;
default:
break;
@ -204,31 +124,18 @@ static void updateBufferData(SEGAContext *context, unsigned int offset, size_t l
if (alFormat == -1)
{
printf("SEGAAPI: Unknown format! 0x%X with %u channels!\n", context->sampleFormat, context->channels);
printf("SEGAAPI Fatal Error: Unknown format - 0x%X with %d channels!\n", sampleFormat, channels);
abort();
}
if (offset != -1)
{
unsigned int sampleSize = bufferSampleSize(context);
ALint position;
alGetSourcei(context->alSource, AL_SAMPLE_OFFSET, &position);
alSourcei(context->alSource, AL_BUFFER, AL_NONE);
// alBufferData(context->alBuffer, alFormat, context->data + (offset / sampleSize), FramesToBytes(context->size / bufferSampleSize(context), alChannels, alType), context->sampleRate);
alBufferData(context->alBuffer, alFormat, context->data, FramesToBytes(context->size / bufferSampleSize(context), alChannels, alType), context->sampleRate);
alSourcei(context->alSource, AL_BUFFER, context->alBuffer);
alSourcei(context->alSource, AL_SAMPLE_OFFSET, position);
return;
}
return alFormat;
}
static void updateBufferData(SEGAContext *context, unsigned int offset, size_t length)
{
alSourcei(context->alSource, AL_BUFFER, AL_NONE);
alBufferData(context->alBuffer, alFormat, context->data, FramesToBytes(context->size / bufferSampleSize(context), alChannels, alType), context->sampleRate);
alBufferData(context->alBuffer, getAlFormat(context->sampleFormat, context->channels), context->data, context->size, context->sampleRate);
alSourcei(context->alSource, AL_BUFFER, context->alBuffer);
// updateBufferLoop(context);
}
static void resetBuffer(SEGAContext *context)
@ -253,12 +160,10 @@ static void resetBuffer(SEGAContext *context)
TSF_MEMSET(res, 0, sizeof(tsf));
res->presetNum = 0;
res->outSampleRate = context->sampleRate;
context->synth = res;
struct tsf_region *region = malloc(sizeof(struct tsf_region));
memset(region, 0, sizeof(struct tsf_region));
tsf_region_clear(region, 0);
region->ampenv.delay = 0;
@ -270,9 +175,9 @@ static void resetBuffer(SEGAContext *context)
context->region = region;
// * - Buffer is in the stop state.
// * - Play position is set to 0.
updateBufferData(context, -1, -1);
alSourcei(context->alSource, AL_BUFFER, AL_NONE);
alSourcei(context->alSource, AL_BYTE_OFFSET, 0);
alSourceStop(context->alSource);
}
int SEGAAPI_Play(void *hHandle)
@ -280,23 +185,26 @@ int SEGAAPI_Play(void *hHandle)
dbgPrint("SEGAAPI_Play() 0x%x", hHandle);
SEGAContext *context = hHandle;
if (context == NULL)
return SEGA_ERROR_BAD_PARAM;
// alSourcei(context->alSource, AL_LOOPING, context->loop ? AL_TRUE : AL_FALSE);
alSourcei(context->alSource, AL_LOOPING, AL_FALSE);
alSourcei(context->alSource, AL_BUFFER, context->alBuffer);
alSourcePlay(context->alSource);
return SEGA_SUCCESS;
}
int SEGAAPI_Pause(void *hHandle)
{
dbgPrint("SEGAAPI_Pause() 0x%x", hHandle);
SEGAContext *context = hHandle;
if (context == NULL)
return SEGA_ERROR_BAD_PARAM;
alSourcePause(context->alSource);
return SEGA_SUCCESS;
}
@ -305,6 +213,7 @@ int SEGAAPI_Stop(void *hHandle)
dbgPrint("SEGAAPI_Stop() 0x%x", hHandle);
SEGAContext *context = hHandle;
if (context == NULL)
return SEGA_ERROR_BAD_PARAM;
@ -316,12 +225,14 @@ int SEGAAPI_Stop(void *hHandle)
int SEGAAPI_PlayWithSetup(void *hHandle)
{
dbgPrint("SEGAAPI_PlayWithSetup() 0x%x", hHandle);
SEGAContext *context = hHandle;
if (context == NULL)
return SEGA_ERROR_BAD_PARAM;
alSourcei(context->alSource, AL_LOOPING, context->loop ? AL_TRUE : AL_FALSE);
alSourcei(context->alSource, AL_BUFFER, context->alBuffer);
alSourcePlay(context->alSource);
return SEGA_ERROR_UNSUPPORTED;
}
@ -343,6 +254,7 @@ PlaybackStatus SEGAAPI_GetPlaybackStatus(void *hHandle)
case AL_PAUSED:
return PLAYBACK_STATUS_PAUSE;
case AL_INITIAL:
return PLAYBACK_STATUS_ACTIVE;
case AL_STOPPED:
return PLAYBACK_STATUS_STOP;
default:
@ -373,7 +285,9 @@ int SEGAAPI_SetSampleRate(void *hHandle, unsigned int dwSampleRate)
SEGAContext *context = hHandle;
context->sampleRate = dwSampleRate;
updateBufferData(context, -1, -1);
return SEGA_SUCCESS;
}
@ -384,6 +298,7 @@ unsigned int SEGAAPI_GetSampleRate(void *hHandle)
return SEGA_ERROR_BAD_HANDLE;
SEGAContext *context = hHandle;
return context->sampleRate;
}
@ -441,7 +356,7 @@ int SEGAAPI_SetSendLevel(void *hHandle, unsigned int dwChannel, unsigned int dwS
unsigned int SEGAAPI_GetSendLevel(void *hHandle, unsigned int dwChannel, unsigned int dwSend)
{
dbgPrint("SEGAAPI_GetSendLevel() 0x%x 0x%x 0x%x", hHandle, dwChannel, dwSend);
return 0;
return SEGA_SUCCESS;
}
int SEGAAPI_SetChannelVolume(void *hHandle, unsigned int dwChannel, unsigned int dwVolume)
@ -510,7 +425,6 @@ int SEGAAPI_SetStartLoopOffset(void *hHandle, unsigned int dwOffset)
SEGAContext *context = hHandle;
context->startLoop = dwOffset;
updateBufferLoop(context);
return SEGA_SUCCESS;
}
@ -534,7 +448,6 @@ int SEGAAPI_SetEndLoopOffset(void *hHandle, unsigned int dwOffset)
SEGAContext *context = hHandle;
context->endLoop = dwOffset;
updateBufferLoop(context);
return SEGA_SUCCESS;
}
@ -580,8 +493,9 @@ int SEGAAPI_SetLoopState(void *hHandle, int loop)
return SEGA_ERROR_BAD_HANDLE;
SEGAContext *context = hHandle;
context->loop = loop;
alSourcei(context->alSource, AL_LOOPING, context->loop ? AL_TRUE : AL_FALSE);
return SEGA_SUCCESS;
}
@ -682,6 +596,7 @@ int SEGAAPI_SetReleaseState(void *hHandle, int enterReleasePhase)
SEGAContext *context = hHandle;
if (!enterReleasePhase)
return SEGA_SUCCESS;