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-rw-r--r--Alc/ALc.c3
-rw-r--r--Alc/portaudio.c239
-rw-r--r--CMakeLists.txt19
-rw-r--r--OpenAL32/Include/alMain.h1
-rw-r--r--alsoftrc.sample6
-rw-r--r--config.h.in3
6 files changed, 271 insertions, 0 deletions
diff --git a/Alc/ALc.c b/Alc/ALc.c
index 72902292..13b2fa31 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -68,6 +68,9 @@ static struct {
#ifdef HAVE_WINMM
{ "winmm", alcWinMMInit, EmptyFuncs },
#endif
+#ifdef HAVE_PORTAUDIO
+ { "port", alc_pa_init, EmptyFuncs },
+#endif
#ifdef HAVE_SDL
{ "sdl", alc_sdl_init, EmptyFuncs },
#endif
diff --git a/Alc/portaudio.c b/Alc/portaudio.c
new file mode 100644
index 00000000..9e36e04b
--- /dev/null
+++ b/Alc/portaudio.c
@@ -0,0 +1,239 @@
+/**
+ * OpenAL cross platform audio library
+ * Copyright (C) 1999-2007 by authors.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ * Or go to http://www.gnu.org/copyleft/lgpl.html
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "alMain.h"
+#include "AL/al.h"
+#include "AL/alc.h"
+#ifdef HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <portaudio.h>
+
+static void *pa_handle;
+#define MAKE_FUNC(x) static typeof(x) * p##x
+MAKE_FUNC(Pa_Initialize);
+MAKE_FUNC(Pa_GetErrorText);
+MAKE_FUNC(Pa_StartStream);
+MAKE_FUNC(Pa_StopStream);
+MAKE_FUNC(Pa_OpenStream);
+MAKE_FUNC(Pa_CloseStream);
+MAKE_FUNC(Pa_GetDefaultOutputDevice);
+#undef MAKE_FUNC
+
+
+static char *pa_device;
+
+typedef struct {
+ PaStream *stream;
+} pa_data;
+
+
+static int pa_callback(const void *inputBuffer, void *outputBuffer,
+ unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo,
+ const PaStreamCallbackFlags statusFlags, void *userData)
+{
+ ALCdevice *device = (ALCdevice*)userData;
+ int frameSize;
+
+ (void)inputBuffer;
+ (void)timeInfo;
+ (void)statusFlags;
+
+ frameSize = aluBytesFromFormat(device->Format);
+ frameSize *= aluChannelsFromFormat(device->Format);
+
+ SuspendContext(NULL);
+ aluMixData(device->Context, outputBuffer, framesPerBuffer*frameSize, device->Format);
+ ProcessContext(NULL);
+
+ return 0;
+}
+
+
+static ALCboolean pa_open_playback(ALCdevice *device, const ALCchar *deviceName)
+{
+ PaStreamParameters outParams;
+ pa_data *data;
+ int periods;
+ PaError err;
+
+ if(pa_handle == NULL)
+ return ALC_FALSE;
+
+ if(deviceName)
+ {
+ if(strcmp(deviceName, pa_device) != 0)
+ return ALC_FALSE;
+ }
+
+ device->szDeviceName = pa_device;
+
+ data = (pa_data*)calloc(1, sizeof(pa_data));
+ device->ExtraData = data;
+
+ outParams.device = GetConfigValueInt("port", "device", -1);
+ if(outParams.device < 0)
+ outParams.device = pPa_GetDefaultOutputDevice();
+ outParams.suggestedLatency = (float)device->UpdateSize /
+ (float)device->Frequency;
+ outParams.hostApiSpecificStreamInfo = NULL;
+
+ switch(aluBytesFromFormat(device->Format))
+ {
+ case 1:
+ outParams.sampleFormat = paUInt8;
+ break;
+ case 2:
+ outParams.sampleFormat = paInt16;
+ break;
+ default:
+ outParams.sampleFormat = -1;
+ AL_PRINT("Unknown format?! %x\n", device->Format);
+ }
+
+ periods = GetConfigValueInt("port", "periods", 4);
+ if((int)periods <= 0)
+ periods = 4;
+ outParams.channelCount = aluChannelsFromFormat(device->Format);
+
+ err = pPa_OpenStream(&data->stream, NULL, &outParams, device->Frequency,
+ device->UpdateSize/periods, paNoFlag,
+ pa_callback, device);
+ if(err != paNoError)
+ {
+ AL_PRINT("Pa_OpenStream() returned an error: %s\n", pPa_GetErrorText(err));
+ device->ExtraData = NULL;
+ free(data);
+ return ALC_FALSE;
+ }
+
+ err = pPa_StartStream(data->stream);
+ if(err != paNoError)
+ {
+ AL_PRINT("Pa_StartStream() returned an error: %s\n", pPa_GetErrorText(err));
+ pPa_CloseStream(data->stream);
+ device->ExtraData = NULL;
+ free(data);
+ return ALC_FALSE;
+ }
+
+ device->UpdateSize /= periods;
+ return ALC_TRUE;
+}
+
+static void pa_close_playback(ALCdevice *device)
+{
+ pa_data *data = (pa_data*)device->ExtraData;
+ PaError err;
+
+ err = pPa_StopStream(data->stream);
+ if(err != paNoError)
+ fprintf(stderr, "Error stopping stream: %s\n", pPa_GetErrorText(err));
+
+ err = pPa_CloseStream(data->stream);
+ if(err != paNoError)
+ fprintf(stderr, "Error closing stream: %s\n", pPa_GetErrorText(err));
+
+ free(data);
+ device->ExtraData = NULL;
+}
+
+
+static ALCboolean pa_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
+{
+ return ALC_FALSE;
+ (void)device;
+ (void)deviceName;
+ (void)frequency;
+ (void)format;
+ (void)SampleSize;
+}
+
+
+
+static const BackendFuncs pa_funcs = {
+ pa_open_playback,
+ pa_close_playback,
+ pa_open_capture,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+void alc_pa_init(BackendFuncs *func_list)
+{
+ const char *str;
+ PaError err;
+
+ *func_list = pa_funcs;
+
+#ifdef HAVE_DLFCN_H
+#if defined(__APPLE__) && defined(__MACH__)
+# define PALIB "libportaudio.2.dylib"
+#else
+# define PALIB "libportaudio.so.2"
+#endif
+ pa_handle = dlopen(PALIB, RTLD_NOW);
+ if(!pa_handle)
+ return;
+ dlerror();
+
+#define LOAD_FUNC(f) do { \
+ p##f = (typeof(f)*)dlsym(pa_handle, #f); \
+ if((str=dlerror()) != NULL) \
+ { \
+ dlclose(pa_handle); \
+ pa_handle = NULL; \
+ AL_PRINT("Could not load %s from "PALIB": %s\n", #f, str); \
+ return; \
+ } \
+} while(0)
+#else
+ str = NULL;
+ pa_handle = 0xDEADBEEF;
+#define LOAD_FUNC(f) p##f = f
+#endif
+
+ LOAD_FUNC(Pa_Initialize);
+ LOAD_FUNC(Pa_GetErrorText);
+ LOAD_FUNC(Pa_StartStream);
+ LOAD_FUNC(Pa_StopStream);
+ LOAD_FUNC(Pa_OpenStream);
+ LOAD_FUNC(Pa_CloseStream);
+ LOAD_FUNC(Pa_GetDefaultOutputDevice);
+#undef LOAD_FUNC
+
+ if((err=pPa_Initialize()) != paNoError)
+ {
+ AL_PRINT("Pa_Initialize() returned an error: %s\n", pPa_GetErrorText(err));
+ return;
+ }
+
+ pa_device = AppendDeviceList("PortAudio Software");
+ AppendAllDeviceList(pa_device);
+}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 137fbabe..050b75f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,7 @@ OPTION(OSS "Check for OSS backend" ON)
OPTION(SOLARIS "Check for Solaris backend" ON)
OPTION(DSOUND "Check for DirectSound backend" ON)
OPTION(WINMM "Check for Windows Multimedia backend" ON)
+OPTION(PORTAUDIO "Check for PortAudio backend" ON)
OPTION(SDL "Check for SDL backend" ON)
OPTION(DLOPEN "Check for the dlopen API for loading optional libs" ON)
@@ -321,6 +322,24 @@ IF(HAVE_WINDOWS_H)
ENDIF()
ENDIF()
+# Check PortAudio backend
+IF(PORTAUDIO)
+ CHECK_INCLUDE_FILE(portaudio.h HAVE_PORTAUDIO_H)
+ IF(HAVE_PORTAUDIO_H)
+ CHECK_LIBRARY_EXISTS(portaudio Pa_Initialize "" HAVE_LIBPORTAUDIO)
+ IF(HAVE_LIBPORTAUDIO)
+ SET(HAVE_PORTAUDIO 1)
+ SET(ALC_OBJS ${ALC_OBJS} Alc/portaudio.c)
+ IF(HAVE_DLFCN_H)
+ SET(BACKENDS "${BACKENDS} PortAudio,")
+ ELSE()
+ SET(BACKENDS "${BACKENDS} PortAudio \(linked\),")
+ SET(EXTRA_LIBS portaudio ${EXTRA_LIBS})
+ ENDIF()
+ ENDIF()
+ ENDIF()
+ENDIF()
+
# Check SDL backend
IF(SDL)
CHECK_INCLUDE_FILE(SDL.h HAVE_SDL_H)
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 687880bd..a936e126 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -150,6 +150,7 @@ void alc_oss_init(BackendFuncs *func_list);
void alc_solaris_init(BackendFuncs *func_list);
void alcDSoundInit(BackendFuncs *func_list);
void alcWinMMInit(BackendFuncs *FuncList);
+void alc_pa_init(BackendFuncs *func_list);
void alc_sdl_init(BackendFuncs *func_list);
void alc_wave_init(BackendFuncs *func_list);
diff --git a/alsoftrc.sample b/alsoftrc.sample
index 5b10f18f..51fafc17 100644
--- a/alsoftrc.sample
+++ b/alsoftrc.sample
@@ -136,6 +136,12 @@ periods = 4 # Sets the number of updates for the output buffer. Default is 4
[winmm] # Windows Multimedia backend stuff
# Nothing yet...
+[port] # PortAudio backend stuff
+device = -1 # Sets the device index for output. Negative values will use the
+ # default as given by PortAudio itself. Default is -1
+
+periods = 4 # Sets the number of update buffers. Default is 4
+
[sdl] # SDL backend stuff
# Nothing yet...
diff --git a/config.h.in b/config.h.in
index 0c8ef40d..340ce323 100644
--- a/config.h.in
+++ b/config.h.in
@@ -19,6 +19,9 @@
/* Define if we have the Windows Multimedia backend */
#cmakedefine HAVE_WINMM
+/* Define if we have the PortAudio backend */
+#cmakedefine HAVE_PORTAUDIO
+
/* Define if we have the SDL backend */
#cmakedefine HAVE_SDL
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 22:37:31 +0000