audio.c

来自「Wine-20031016」· C语言 代码 · 共 2,103 行 · 第 1/5 页

/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
 * Wine Driver for Libaudioio
 * Derived from the Wine OSS Sample Driver
 * Copyright 1994 Martin Ayotte
 *           1999 Eric Pouech (async playing in waveOut/waveIn)
 *	     2000 Eric Pouech (loops in waveOut)
 *	     2002 Robert Lunnon (Modifications for libaudioio)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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
 *
 *
 * Note large hacks done to effectively  disable DSound altogether
 *  Also Input is not yet working (Lots more work to be done there)
  * But this does make a reasonable output driver for solaris untill the arts driver comes up to speed
 */

/*
 * FIXME:
 *	pause in waveOut does not work correctly
 *	full duplex (in/out) is not working (device is opened twice for Out
 *	and In) (OSS is known for its poor duplex capabilities, alsa is
 *	better)
 */

/*#define EMULATE_SB16*/

#include "config.h"

#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#ifdef HAVE_LIBAUDIOIO_H
#include <libaudioio.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winerror.h"
#include "wine/winuser16.h"
#include "mmddk.h"
#include "dsound.h"
#include "dsdriver.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(wave);

#ifdef HAVE_LIBAUDIOIO

/* Allow 1% deviation for sample rates (some ES137x cards) */
#define NEAR_MATCH(rate1,rate2) (((100*((int)(rate1)-(int)(rate2)))/(rate1))==0)

#define SOUND_DEV "/dev/audio"
#define DEFAULT_FRAGMENT_SIZE 4096



#define MAX_WAVEOUTDRV 	(1)
#define MAX_WAVEINDRV 	(1)

/* state diagram for waveOut writing:
 *
 * +---------+-------------+---------------+---------------------------------+
 * |  state  |  function   |     event     |            new state	     |
 * +---------+-------------+---------------+---------------------------------+
 * |	     | open()	   |		   | STOPPED		       	     |
 * | PAUSED  | write()	   | 		   | PAUSED		       	     |
 * | STOPPED | write()	   | <thrd create> | PLAYING		  	     |
 * | PLAYING | write()	   | HEADER        | PLAYING		  	     |
 * | (other) | write()	   | <error>       |		       		     |
 * | (any)   | pause()	   | PAUSING	   | PAUSED		       	     |
 * | PAUSED  | restart()   | RESTARTING    | PLAYING (if no thrd => STOPPED) |
 * | (any)   | reset()	   | RESETTING     | STOPPED		      	     |
 * | (any)   | close()	   | CLOSING	   | CLOSED		      	     |
 * +---------+-------------+---------------+---------------------------------+
 */

/* states of the playing device */
#define	WINE_WS_PLAYING		0
#define	WINE_WS_PAUSED		1
#define	WINE_WS_STOPPED		2
#define WINE_WS_CLOSED		3

/* events to be send to device */
#define WINE_WM_PAUSING		(WM_USER + 1)
#define WINE_WM_RESTARTING	(WM_USER + 2)
#define WINE_WM_RESETTING	(WM_USER + 3)
#define WINE_WM_CLOSING		(WM_USER + 4)
#define WINE_WM_HEADER		(WM_USER + 5)

#define WINE_WM_FIRST WINE_WM_PAUSING
#define WINE_WM_LAST WINE_WM_HEADER

typedef struct {
    int msg;
    DWORD param;
} WWO_MSG;

typedef struct {
    int				unixdev;
    volatile int		state;			/* one of the WINE_WS_ manifest constants */
    DWORD			dwFragmentSize;		/* size of OSS buffer fragment */
    WAVEOPENDESC		waveDesc;
    WORD			wFlags;
    PCMWAVEFORMAT		format;
    LPWAVEHDR			lpQueuePtr;		/* start of queued WAVEHDRs (waiting to be notified) */
    LPWAVEHDR			lpPlayPtr;		/* start of not yet fully played buffers */
    LPWAVEHDR			lpLoopPtr;              /* pointer of first buffer in loop, if any */
    DWORD			dwLoops;		/* private copy of loop counter */

    DWORD			dwLastFragDone;		/* time in ms, when last played fragment will be actually played */
    DWORD			dwPlayedTotal;		/* number of bytes played since opening */

    /* info on current lpQueueHdr->lpWaveHdr */
    DWORD			dwOffCurrHdr;		/* offset in lpPlayPtr->lpData for fragments */
    DWORD			dwRemain;		/* number of bytes to write to end the current fragment  */

    /* synchronization stuff */
    HANDLE			hThread;
    DWORD			dwThreadID;
    HANDLE			hEvent;
#define WWO_RING_BUFFER_SIZE	30
    WWO_MSG			messages[WWO_RING_BUFFER_SIZE];
    int				msg_tosave;
    int				msg_toget;
    HANDLE			msg_event;
    CRITICAL_SECTION		msg_crst;
    WAVEOUTCAPSA		caps;

    /* DirectSound stuff */
    LPBYTE			mapping;
    DWORD			maplen;
} WINE_WAVEOUT;

typedef struct {
    int				unixdev;
    volatile int		state;
    DWORD			dwFragmentSize;		/* OpenSound '/dev/dsp' give us that size */
    WAVEOPENDESC		waveDesc;
    WORD			wFlags;
    PCMWAVEFORMAT		format;
    LPWAVEHDR			lpQueuePtr;
    DWORD			dwTotalRecorded;
    WAVEINCAPSA			caps;
    BOOL                        bTriggerSupport;

    /* synchronization stuff */
    HANDLE			hThread;
    DWORD			dwThreadID;
    HANDLE			hEvent;
} WINE_WAVEIN;

static WINE_WAVEOUT	WOutDev   [MAX_WAVEOUTDRV];
static WINE_WAVEIN	WInDev    [MAX_WAVEINDRV ];

static DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
static DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
static DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
static DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
static DWORD wodDsGuid(UINT wDevID, LPGUID pGuid);
static DWORD widDsGuid(UINT wDevID, LPGUID pGuid);

/*======================================================================*
 *                  Low level WAVE implementation			*
 *======================================================================*/
SampleSpec_t spec[2];



LONG LIBAUDIOIO_WaveInit(void)
{
    int 	audio;
    int		smplrate;
    int		samplesize = 16;
    int		dsp_stereo = 1;
    int		bytespersmpl;
    int 	caps;
    int		mask;
	int 	i;

	int audio_fd;
	int mode;
    TRACE("Init ENTERED rate = %d\n",spec[PLAYBACK].rate);
       spec[RECORD].channels=spec[PLAYBACK].channels=2;
        spec[RECORD].max_blocks=spec[PLAYBACK].max_blocks=16;
        spec[RECORD].rate=spec[PLAYBACK].rate=44100;
        spec[RECORD].encoding=spec[PLAYBACK].encoding= ENCODE_PCM;
        spec[RECORD].precision=spec[PLAYBACK].precision=16 ;
        spec[RECORD].endian=spec[PLAYBACK].endian=ENDIAN_INTEL;
        spec[RECORD].disable_threads=spec[PLAYBACK].disable_threads=1;
	spec[RECORD].type=spec[PLAYBACK].type=TYPE_SIGNED; /* in 16 bit mode this is what typical PC hardware expects */

	mode = O_WRONLY|O_NDELAY;

	/* start with output device */

	/* initialize all device handles to -1 */
	for (i = 0; i < MAX_WAVEOUTDRV; ++i)
	{
		WOutDev[i].unixdev = -1;
	}

    /* FIXME: only one device is supported */
    memset(&WOutDev[0].caps, 0, sizeof(WOutDev[0].caps));



    /* FIXME: some programs compare this string against the content of the registry
     * for MM drivers. The names have to match in order for the program to work
     * (e.g. MS win9x mplayer.exe)
     */
#ifdef EMULATE_SB16
    WOutDev[0].caps.wMid = 0x0002;
    WOutDev[0].caps.wPid = 0x0104;
    strcpy(WOutDev[0].caps.szPname, "SB16 Wave Out");
#else
    WOutDev[0].caps.wMid = 0x00FF; 	/* Manufac ID */
    WOutDev[0].caps.wPid = 0x0001; 	/* Product ID */
    /*    strcpy(WOutDev[0].caps.szPname, "OpenSoundSystem WAVOUT Driver");*/
    strcpy(WOutDev[0].caps.szPname, "CS4236/37/38");
#endif
    WOutDev[0].caps.vDriverVersion = 0x0100;
    WOutDev[0].caps.dwFormats = 0x00000000;
    WOutDev[0].caps.dwSupport = WAVECAPS_VOLUME;

    /*
     * Libaudioio works differently, you tell it what spec audio you want to write and it
     * Guarantees to match it by converting to the final format on the fly
     *So we dont need to read  back and compare
     */

    bytespersmpl = spec[PLAYBACK].precision/8;

    WOutDev[0].caps.wChannels = spec[PLAYBACK].channels;


/* Fixme: Libaudioio 0.2 doesn't support balance yet (Libaudioio 0.3 does so this must be fixed later)*/

/*    if (WOutDev[0].caps.wChannels > 1) WOutDev[0].caps.dwSupport |= WAVECAPS_LRVOLUME;*/
    TRACE("Init sammplerate= %d\n",spec[PLAYBACK].rate);

    smplrate = spec[PLAYBACK].rate;
/*
 * We have set up the data format to be 16 bit signed in intel format
 * For Big Endian machines libaudioio will convert the data to bigendian for us
 */

	    WOutDev[0].caps.dwFormats |= WAVE_FORMAT_4M16;
	    if (WOutDev[0].caps.wChannels > 1)
		WOutDev[0].caps.dwFormats |= WAVE_FORMAT_4S16;

/* Don't understand this yet, but I dont think this functionality is portable, leave here for future evaluation
 *   if (IOCTL(audio, SNDCTL_DSP_GETCAPS, caps) == 0) {
 *	TRACE("OSS dsp out caps=%08X\n", caps);
 *	if ((caps & DSP_CAP_REALTIME) && !(caps & DSP_CAP_BATCH)) {
 *	    WOutDev[0].caps.dwSupport |= WAVECAPS_SAMPLEACCURATE;
 *	}
 */	/* well, might as well use the DirectSound cap flag for something */
/*	if ((caps & DSP_CAP_TRIGGER) && (caps & DSP_CAP_MMAP) &&
 *	    !(caps & DSP_CAP_BATCH))
 *	    WOutDev[0].caps.dwSupport |= WAVECAPS_DIRECTSOUND;
 *   }
 */


/*
 * Note that libaudioio audio capture is not proven yet, in our open call
 * set the spec for input audio the same as for output
 */
    TRACE("out dwFormats = %08lX, dwSupport = %08lX\n",
	  WOutDev[0].caps.dwFormats, WOutDev[0].caps.dwSupport);

	for (i = 0; i < MAX_WAVEINDRV; ++i)
	{
		WInDev[i].unixdev = -1;
	}

	memset(&WInDev[0].caps, 0, sizeof(WInDev[0].caps));



#ifdef EMULATE_SB16
    WInDev[0].caps.wMid = 0x0002;
    WInDev[0].caps.wPid = 0x0004;
    strcpy(WInDev[0].caps.szPname, "SB16 Wave In");
#else
    WInDev[0].caps.wMid = 0x00FF; 	/* Manufac ID */
    WInDev[0].caps.wPid = 0x0001; 	/* Product ID */
    strcpy(WInDev[0].caps.szPname, "OpenSoundSystem WAVIN Driver");
#endif
    WInDev[0].caps.dwFormats = 0x00000000;
    WInDev[0].caps.wChannels = spec[RECORD].channels;

    WInDev[0].bTriggerSupport = TRUE;    /* Maybe :-) */

    bytespersmpl = spec[RECORD].precision/8;
    smplrate = spec[RECORD].rate;

	    WInDev[0].caps.dwFormats |= WAVE_FORMAT_4M16;
	    if (WInDev[0].caps.wChannels > 1)
		WInDev[0].caps.dwFormats |= WAVE_FORMAT_4S16;


    TRACE("in dwFormats = %08lX\n", WInDev[0].caps.dwFormats);

    return 0;
}

/**************************************************************************
 * 			LIBAUDIOIO_NotifyClient			[internal]
 */
static DWORD LIBAUDIOIO_NotifyClient(UINT wDevID, WORD wMsg, DWORD dwParam1, DWORD dwParam2)
{
    TRACE("wDevID = %04X wMsg = 0x%04x dwParm1 = %04lX dwParam2 = %04lX\n",wDevID, wMsg, dwParam1, dwParam2);

    switch (wMsg) {
    case WOM_OPEN:
    case WOM_CLOSE:
    case WOM_DONE:
	if (wDevID >= MAX_WAVEOUTDRV) return MCIERR_INTERNAL;

	if (WOutDev[wDevID].wFlags != DCB_NULL &&
	    !DriverCallback(WOutDev[wDevID].waveDesc.dwCallback,
			    WOutDev[wDevID].wFlags,
			    WOutDev[wDevID].waveDesc.hWave,
			    wMsg,
			    WOutDev[wDevID].waveDesc.dwInstance,
			    dwParam1,
			    dwParam2)) {
	    WARN("can't notify client !\n");
	    return MMSYSERR_NOERROR;
	}
	break;

    case WIM_OPEN:
    case WIM_CLOSE:
    case WIM_DATA:
	if (wDevID >= MAX_WAVEINDRV) return MCIERR_INTERNAL;

	if (WInDev[wDevID].wFlags != DCB_NULL &&
	    !DriverCallback(WInDev[wDevID].waveDesc.dwCallback,
			    WInDev[wDevID].wFlags,
			    WInDev[wDevID].waveDesc.hWave,
			    wMsg,
			    WInDev[wDevID].waveDesc.dwInstance,
			    dwParam1,
			    dwParam2)) {
	    WARN("can't notify client !\n");
	    return MMSYSERR_NOERROR;
	}
	break;
    default:
	FIXME("Unknown CB message %u\n", wMsg);
	break;
    }
    return 0;
}

/*======================================================================*
 *                  Low level WAVE OUT implementation			*
 *======================================================================*/

/**************************************************************************
 * 				wodPlayer_WriteFragments	[internal]
 *
 * wodPlayer helper. Writes as many fragments as it can to unixdev.
 * Returns TRUE in case of buffer underrun.
 */
static	BOOL	wodPlayer_WriteFragments(WINE_WAVEOUT* wwo)
{
    LPWAVEHDR		lpWaveHdr;
    LPBYTE		lpData;
    int			count;

TRACE("wodPlayer_WriteFragments sammplerate= %d\n",spec[PLAYBACK].rate);
    for (;;) {


/*
 * Libaudioio doesn't buffer the same way as linux, you can write data is any block size
 *And libaudioio just tracks the number of blocks in the streams queue to control latency
 */

	if (!AudioIOCheckWriteReady()) return FALSE;   /*  Returns false if you have execeeded your specified latency (No space left)*/

	lpWaveHdr = wwo->lpPlayPtr;
	if (!lpWaveHdr) {
	    if (wwo->dwRemain > 0 &&		/* still data to send to complete current fragment */
		wwo->dwLastFragDone &&  	/* first fragment has been played */
		AudioIOCheckUnderrun()) {   /* done with all waveOutWrite()' fragments */
		/* FIXME: should do better handling here */
		WARN("Oooch, buffer underrun !\n");
		return TRUE; /* force resetting of waveOut device */
	    }
	    return FALSE;	/* wait a bit */
	}