play_win32.c
/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* ====================================================================
* Copyright (c) 1999-2001 Carnegie Mellon University. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* This work was supported in part by funding from the Defense Advanced
* Research Projects Agency and the National Science Foundation of the
* United States of America, and the CMU Sphinx Speech Consortium.
*
* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
* NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ====================================================================
*
*/
/*
* HISTORY
*
* 17-Apr-98 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University
* Added ad_open_play_sps(), and made ad_open_play() call it.
*
* 10-Jun-96 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University
* Added ad_play_t type to all calls.
*
* 03-Jun-96 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University
* Created.
*/
#include <windows.h>
#include <mmsystem.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sphinxbase/prim_type.h"
#include "sphinxbase/ad.h"
#define WO_BUFSIZE 3200 /* Samples/buf */
#define N_WO_BUF 2 /* #Playback bufs */
/* Silvio Moioli: using OutputDebugStringW instead of OutputDebugString */
#ifdef _WIN32_WCE
#include "ckd_alloc.h"
static void
waveout_error(char *src, int32 ret)
{
TCHAR errbuf[512];
wchar_t* werrbuf;
size_t len;
waveOutGetErrorText(ret, errbuf, sizeof(errbuf));
len = mbstowcs(NULL, errbuf, 0) + 1;
werrbuf = ckd_calloc(len, sizeof(*werrbuf));
mbstowcs(werrbuf, errbuf, len);
OutputDebugStringW(werrbuf);
}
#else
static void
waveout_error(char *src, int32 ret)
{
char errbuf[1024];
waveOutGetErrorText(ret, errbuf, sizeof(errbuf));
fprintf(stderr, "%s error %d: %s\n", src, ret, errbuf);
}
#endif
static void
waveout_free_buf(ad_wbuf_t * b)
{
GlobalUnlock(b->h_whdr);
GlobalFree(b->h_whdr);
GlobalUnlock(b->h_buf);
GlobalFree(b->h_buf);
}
static int32
waveout_alloc_buf(ad_wbuf_t * b, int32 samples_per_buf)
{
HGLOBAL h_buf;
LPSTR p_buf;
HGLOBAL h_whdr;
LPWAVEHDR p_whdr;
/* Allocate data buffer */
h_buf =
GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
samples_per_buf * sizeof(int16));
if (!h_buf) {
fprintf(stderr, "GlobalAlloc failed\n");
return -1;
}
if ((p_buf = GlobalLock(h_buf)) == NULL) {
GlobalFree(h_buf);
fprintf(stderr, "GlobalLock failed\n");
return -1;
}
/* Allocate WAVEHDR structure */
h_whdr = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, sizeof(WAVEHDR));
if (h_whdr == NULL) {
GlobalUnlock(h_buf);
GlobalFree(h_buf);
fprintf(stderr, "GlobalAlloc failed\n");
return -1;
}
if ((p_whdr = GlobalLock(h_whdr)) == NULL) {
GlobalUnlock(h_buf);
GlobalFree(h_buf);
GlobalFree(h_whdr);
fprintf(stderr, "GlobalLock failed\n");
return -1;
}
b->h_buf = h_buf;
b->p_buf = p_buf;
b->h_whdr = h_whdr;
b->p_whdr = p_whdr;
p_whdr->lpData = p_buf;
p_whdr->dwBufferLength = samples_per_buf * sizeof(int16);
p_whdr->dwUser = 0L;
p_whdr->dwFlags = 0L;
p_whdr->dwLoops = 0L;
return 0;
}
static int32
waveout_enqueue_buf(HWAVEOUT h, LPWAVEHDR whdr)
{
int32 st;
if ((st = waveOutPrepareHeader(h, whdr, sizeof(WAVEHDR))) != 0) {
waveout_error("waveOutPrepareHeader", st);
return -1;
}
if ((st = waveOutWrite(h, whdr, sizeof(WAVEHDR))) != 0) {
waveout_error("waveOutWrite", st);
return -1;
}
return 0;
}
static HWAVEOUT
waveout_open(int32 samples_per_sec, int32 bytes_per_sample)
{
WAVEFORMATEX wfmt;
int32 st;
HWAVEOUT h;
if (bytes_per_sample != sizeof(int16)) {
fprintf(stderr, "bytes/sample != %d\n", sizeof(int16));
return NULL;
}
wfmt.wFormatTag = WAVE_FORMAT_PCM;
wfmt.nChannels = 1;
wfmt.nSamplesPerSec = samples_per_sec;
wfmt.nAvgBytesPerSec = samples_per_sec * bytes_per_sample;
wfmt.nBlockAlign = bytes_per_sample;
wfmt.wBitsPerSample = 8 * bytes_per_sample;
wfmt.cbSize = 0;
/* There should be a check here for a device of the desired type; later... */
st = waveOutOpen((LPHWAVEOUT) & h, WAVE_MAPPER,
(LPWAVEFORMATEX) & wfmt, (DWORD) 0L, 0L,
(DWORD) CALLBACK_NULL);
if (st != 0) {
waveout_error("waveOutOpen", st);
return NULL;
}
return h;
}
static void
waveout_mem_cleanup(ad_play_t * p, int32 n_buf)
{
int32 i;
for (i = 0; i < n_buf; i++)
waveout_free_buf(&(p->wo_buf[i]));
if (p->wo_buf)
free(p->wo_buf);
if (p->busy)
free(p->busy);
}
static int32
waveout_close(ad_play_t * p)
{
int32 st;
waveout_mem_cleanup(p, N_WO_BUF);
if ((st = waveOutClose(p->h_waveout)) != 0) {
waveout_error("waveOutClose", st);
return -1;
}
free(p);
return 0;
}
ad_play_t *
ad_open_play_sps(int32 sps)
{
ad_play_t *p;
int32 i;
HWAVEOUT h;
if ((h = waveout_open(sps, sizeof(int16))) == NULL)
return NULL;
if ((p = (ad_play_t *) calloc(1, sizeof(ad_play_t))) == NULL) {
fprintf(stderr, "calloc(1,%d) failed\n", sizeof(ad_play_t));
waveOutClose(h);
return NULL;
}
if ((p->wo_buf =
(ad_wbuf_t *) calloc(N_WO_BUF, sizeof(ad_wbuf_t))) == NULL) {
fprintf(stderr, "calloc(%d,%d) failed\n", N_WO_BUF,
sizeof(ad_wbuf_t));
free(p);
waveOutClose(h);
return NULL;
}
if ((p->busy = (char *) calloc(N_WO_BUF, sizeof(char))) == NULL) {
fprintf(stderr, "calloc(%d,%d) failed\n", N_WO_BUF, sizeof(char));
waveout_mem_cleanup(p, 0);
free(p);
waveOutClose(h);
return NULL;
}
for (i = 0; i < N_WO_BUF; i++) {
if (waveout_alloc_buf(&(p->wo_buf[i]), WO_BUFSIZE) < 0) {
waveout_mem_cleanup(p, i);
free(p);
waveOutClose(h);
return NULL;
}
}
p->h_waveout = h;
p->playing = 0;
p->opened = 1;
p->nxtbuf = 0;
p->sps = sps;
p->bps = sizeof(int16); /* HACK!! Hardwired value for bytes/sec */
return p;
}
ad_play_t *
ad_open_play(void)
{
return (ad_open_play_sps(DEFAULT_SAMPLES_PER_SEC));
}
int32
ad_close_play(ad_play_t * p)
{
if (!p->opened)
return 0;
if (p->playing)
if (ad_stop_play(p) < 0)
return -1;
if (waveout_close(p) < 0)
return -1;
return 0;
}
int32
ad_start_play(ad_play_t * p)
{
int32 i;
if ((!p->opened) || p->playing)
return -1;
for (i = 0; i < N_WO_BUF; i++)
p->busy[i] = 0;
p->nxtbuf = 0;
p->playing = 1;
return 0;
}
int32
ad_stop_play(ad_play_t * p)
{
int32 i, st;
LPWAVEHDR whdr;
if ((!p->opened) || (!p->playing))
return -1;
#if 0
whdr->dwUser = (plen <= 0) ? 1 : 0;
#endif
/* Wait for all buffers to be emptied and unprepare them */
for (i = 0; i < N_WO_BUF; i++) {
whdr = p->wo_buf[i].p_whdr;
while (p->busy[i] && (!(whdr->dwFlags & WHDR_DONE)))
Sleep(100);
st = waveOutUnprepareHeader(p->h_waveout, whdr, sizeof(WAVEHDR));
if (st != 0) {
waveout_error("waveOutUnprepareHeader", st);
return -1;
}
p->busy[i] = 0;
}
return 0;
}
int32
ad_write(ad_play_t * p, int16 * buf, int32 size)
{
int32 i, k, len, st;
LPWAVEHDR whdr;
if ((!p->opened) || (!p->playing))
return -1;
len = 0;
for (i = 0; (i < N_WO_BUF) && (size > 0); i++) {
whdr = p->wo_buf[p->nxtbuf].p_whdr;
if (p->busy[p->nxtbuf]) {
if (!(whdr->dwFlags & WHDR_DONE))
return len;
st = waveOutUnprepareHeader(p->h_waveout, whdr,
sizeof(WAVEHDR));
if (st != 0) {
waveout_error("waveOutUnprepareHeader", st);
return -1;
}
p->busy[p->nxtbuf] = 0;
}
k = (size > WO_BUFSIZE) ? WO_BUFSIZE : size;
whdr->dwBufferLength = k * sizeof(int16);
memcpy(whdr->lpData, (LPSTR) buf, k * sizeof(int16));
if (waveout_enqueue_buf(p->h_waveout, whdr) < 0)
return -1;
buf += k;
size -= k;
len += k;
p->busy[(p->nxtbuf)++] = 1;
if (p->nxtbuf >= N_WO_BUF)
p->nxtbuf = 0;
}
return len;
}
ckd_calloc
#define ckd_calloc(n, sz)
Macros to simplify the use of above functions.
Definition: ckd_alloc.h:248
ckd_alloc.h
Sphinx&#39;s memory allocation/deallocation routines.
prim_type.h
Basic type definitions used in Sphinx.
ad.h
generic live audio interface for recording and playback
ad_play_t
Definition: ad.h:346
ad_write
SPHINXBASE_EXPORT int32 ad_write(ad_play_t *, int16 *buf, int32 len)
Queue a block of audio samples for playback.
Definition: play_win32.c:373