Add win32 Multi Media plugin, contributed by Matthew Brown

git-svn-id: http://svn.xiph.org/trunk/ao@1989 0101bb08-14d6-0310-b084-bc0e0c8e3800

src/plugins/mmsound/mmsound.c

+/*
+ *
+ *  mmsound.c
+ *
+ *      Copyright (C) Matthew Brown - Sept. July 2001
+ *
+ *  This file is part of libao, a cross-platform library.  See
+ *  README for a history of this source code.
+ *
+ *  libao 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; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  libao 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 for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GNU Make; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <windows.h>
+#include <stdio.h>
+#include <mmsystem.h>
+#include <ao/ao.h>
+#include <ao/plugin.h>
+
+HANDLE notdone;
+
+static	void CALLBACK waveOutProc(HWAVEOUT hwo,UINT uMsg,DWORD dwInstance,DWORD dwParam1,DWORD dwParam2)
+{
+	if (uMsg == WOM_DONE)
+	{
+		ReleaseSemaphore(notdone, 1, NULL);
+	}
+}
+
+typedef struct ao_mmsound_internal {
+	HWAVEOUT m_hWaveOut;
+	WAVEHDR	m_waveHeader[2];
+	uint_32 buf_size;
+	void *buffer[2];
+	int currentb;
+} ao_mmsound_internal;
+
+static char *ao_mmsound_options[] = {"buf_size"};
+
+static ao_info ao_mmsound_info =
+{
+	AO_TYPE_LIVE,
+	"Win9x waveout audio output ",
+	"mmsound",
+	"Matthew Brown <matt@digitalblues.org>",
+	"WARNING: This driver is untested!",
+	AO_FMT_NATIVE,
+	20,
+	ao_mmsound_options,
+	1
+};
+
+
+int ao_plugin_test()
+{
+	return 1; /* This plugin works in default mode */
+}
+
+
+ao_info *ao_plugin_driver_info(void)
+{
+	return &ao_mmsound_info;
+}
+
+
+int ao_plugin_device_init(ao_device *device)
+{
+	ao_mmsound_internal *internal;
+
+	internal = (ao_mmsound_internal *) malloc(sizeof(ao_mmsound_internal));
+
+	if (internal == NULL)	
+		return 0; /* Could not initialize device memory */
+
+	device->internal = internal;
+
+	internal->buf_size = 0;
+
+	return 1; /* Memory alloc successful */
+}
+
+
+int ao_plugin_set_option(ao_device *device, const char *key, const char *value)
+{
+	ao_mmsound_internal *internal = (ao_mmsound_internal *) device->internal;
+	if (!strcmp(key, "buf_size"))
+		internal->buf_size = atoi(value);
+	
+	return 1;
+}
+
+
+/*
+ * open the audio device for writing to
+ */
+int ao_plugin_open(ao_device *device, ao_sample_format *format)
+{
+	ao_mmsound_internal *internal = (ao_mmsound_internal *) device->internal;
+	
+	MMRESULT errCode;
+	WAVEFORMATEX wfx;
+
+	wfx.wFormatTag = 1;	// WAVE_FORMAT_PCM
+	wfx.nChannels = format->channels;
+	wfx.nSamplesPerSec = format->rate;
+	wfx.nAvgBytesPerSec = ((format->rate)*((format->channels*format->bits)/8));
+	wfx.nBlockAlign = ((format->channels*format->bits)/8);
+	wfx.wBitsPerSample = format->bits;
+	wfx.cbSize = 0;
+
+	errCode = waveOutOpen(	&internal->m_hWaveOut,
+							WAVE_MAPPER,
+							&wfx,
+							(DWORD)waveOutProc,
+							0,
+							(DWORD)CALLBACK_FUNCTION);
+
+	if (errCode != MMSYSERR_NOERROR) return 0;
+
+	if(internal->buf_size == 0)
+	{
+		internal->buf_size = 352800;
+	}
+
+	memset(&internal->m_waveHeader[0],0,sizeof(WAVEHDR));
+	memset(&internal->m_waveHeader[1],0,sizeof(WAVEHDR));
+	internal->buffer[0] = malloc(internal->buf_size);
+	internal->buffer[1] = malloc(internal->buf_size);
+	internal->currentb = 0;
+
+	notdone = CreateSemaphore(NULL, 0, 1, NULL);
+	ReleaseSemaphore(notdone, 1, NULL);
+
+	device->driver_byte_format = AO_FMT_NATIVE;
+	
+	return 1;
+}
+
+/*
+ * play the sample to the already opened file descriptor
+ */
+int ao_plugin_play(ao_device *device, const char *output_samples, 
+		uint_32 num_bytes)
+{
+	ao_mmsound_internal *internal = (ao_mmsound_internal *) device->internal;
+	
+	if(num_bytes > internal->buf_size)
+		return 0;
+
+	if (internal->m_waveHeader[internal->currentb].dwFlags&WHDR_PREPARED)
+		waveOutUnprepareHeader(internal->m_hWaveOut,&internal->m_waveHeader[internal->currentb],sizeof(WAVEHDR));
+	
+	// Prepare internal->buffer[n] to be inteserted int WaveOut buffer.
+	memcpy(internal->buffer[internal->currentb], output_samples, num_bytes);
+
+	internal->m_waveHeader[internal->currentb].lpData = (char*)internal->buffer[internal->currentb];
+	internal->m_waveHeader[internal->currentb].dwBufferLength = (unsigned long)num_bytes;
+	waveOutPrepareHeader(internal->m_hWaveOut,&internal->m_waveHeader[internal->currentb],sizeof(WAVEHDR));
+
+	// Send internal->buffer[n] to the WaveOut device buffer.
+	waveOutWrite(internal->m_hWaveOut,&internal->m_waveHeader[internal->currentb],sizeof(WAVEHDR));
+	WaitForSingleObject(notdone, INFINITE);
+
+	internal->currentb++;
+	if(internal->currentb >= 2) internal->currentb = 0;
+
+	return 1;
+}
+
+int ao_plugin_close(ao_device *device)
+{
+	ao_mmsound_internal *internal = (ao_mmsound_internal *) device->internal;
+
+	CloseHandle(notdone);
+	free(internal->buffer[0]);
+	free(internal->buffer[1]);
+	
+	waveOutReset(internal->m_hWaveOut);
+	waveOutClose(internal->m_hWaveOut);
+
+	return 1;
+}
+
+
+void ao_plugin_device_clear(ao_device *device)
+{
+	ao_mmsound_internal *internal = (ao_mmsound_internal *) device->internal;
+
+	free(internal);
+}
\ No newline at end of file

src/plugins/mmsound/mmsound.def

+LIBRARY
+; Don't explicitly name DLL here, let the linker do it.
+;
+DESCRIPTION "Entry points for mmsound.dll"
+;
+EXPORTS
+
+ao_plugin_test
+ao_plugin_driver_info
+ao_plugin_device_init
+ao_plugin_set_option
+ao_plugin_open
+ao_plugin_play
+ao_plugin_close
+ao_plugin_device_clear
\ No newline at end of file

src/plugins/mmsound/mmsound.dsp

+# Microsoft Developer Studio Project File - Name="mmsound" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=mmsound - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "mmsound.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "mmsound.mak" CFG="mmsound - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "mmsound - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "mmsound - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "mmsound - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "MMSOUND_EXPORTS" /YX /FD /c
+# ADD CPP /nologo /MT /W3 /GX /O2 /I "..\..\..\include" /I "..\..\..\win32\include" /I "." /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "MMSOUND_EXPORTS" /FD /c
+# SUBTRACT CPP /YX /Yc /Yu
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /machine:I386
+
+!ELSEIF  "$(CFG)" == "mmsound - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "MMSOUND_EXPORTS" /YX /FD /GZ /c
+# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "..\..\..\include" /I "..\..\..\win32\include" /I "." /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "MMSOUND_EXPORTS" /FD /GZ /c
+# SUBTRACT CPP /YX
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "mmsound - Win32 Release"
+# Name "mmsound - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=.\mmsound.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mmsound.def
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project