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win32audio.cc
/*************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1995,1996 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author : Richard Caley */
/* Date : August 1997 */
/*-----------------------------------------------------------------------*/
/* Optional 16bit linear support for Windows NT/95 */
/* */
/*=======================================================================*/
#include <cstdio>
#include "EST_cutils.h"
#include "EST_Wave.h"
#include "EST_Option.h"
#include "EST_io_aux.h"
#include "EST_Pathname.h"
#ifdef SUPPORT_WIN32AUDIO
#include <EST_system.h>
#ifdef SYSTEM_IS_UNIX
// Even if we think we are unix, this must be Win32 if we are asked
// to support win32 audio, presumably under cygnus gunwin32 These definitions
// aren't in the gnuwin32 headers
#undef TRUE
#undef FALSE
/* Changed for cygwin 1
#include <Windows32/BASE.h>
#define SND_MEMORY 0x0004
#define WAVE_FORMAT_PCM 1
*/
#include <windows.h>
/* This is no longer required
extern "C" {
WINBOOL STDCALL PlaySoundA(LPCSTR pszSound, HMODULE hmod, DWORD fdwSound);
};
#define PlaySound PlaySoundA
*/
#endif
int win32audio_supported = TRUE;
struct riff_header {
char riff[4];
int file_size;
char wave[4];
char fmt[4];
int header_size;
short sample_format;
short n_channels;
int sample_rate;
int bytes_per_second;
short block_align;
short bits_per_sample;
char data[4];
int data_size;
};
int play_win32audio_wave(EST_Wave &inwave, EST_Option &al)
{
char *buffer = new char[sizeof(riff_header) + inwave.length()*inwave.num_channels() * sizeof(short)];
struct riff_header *hdr = (struct riff_header *)buffer;
char *data = buffer + sizeof(struct riff_header);
strncpy(hdr->riff, "RIFF", 4);
hdr->file_size = sizeof(riff_header) + inwave.length()*sizeof(short);
strncpy(hdr->wave, "WAVE", 4);
strncpy(hdr->fmt, "fmt ", 4);
hdr->header_size = 16;
hdr->sample_format = WAVE_FORMAT_PCM;
hdr->n_channels = inwave.num_channels();
hdr->sample_rate = inwave.sample_rate();
hdr->bytes_per_second = hdr->sample_rate * hdr->n_channels * 2;
hdr->block_align = hdr->n_channels * 2;
hdr->bits_per_sample = 16;
strncpy(hdr->data, "data", 4);
hdr->data_size = hdr->n_channels * 2 * inwave.num_samples();
memcpy(data, inwave.values().memory(), hdr->n_channels * 2 * inwave.num_samples());
PlaySound( buffer,
NULL,
SND_MEMORY);
delete [] buffer;
return 1;
}
#else
int win32audio_supported = FALSE;
int play_win32audio_wave(EST_Wave &inwave, EST_Option &al)
{
(void)inwave;
(void)al;
cerr << "Windows win32 audio not supported" << endl;
return -1;
}
#endif
EST_Option
Definition EST_Option.h:50
EST_TVector::memory
const T * memory() const
Definition EST_TVector.h:241
EST_Wave
Definition EST_Wave.h:65
EST_Wave::num_channels
int num_channels() const
return the number of channels in the waveform
Definition EST_Wave.h:145
EST_Wave::length
int length() const
return the size of the waveform, i.e. the number of samples.
Definition EST_Wave.h:151
EST_Wave::sample_rate
int sample_rate() const
return the sampling rate (frequency)
Definition EST_Wave.h:147
EST_Wave::num_samples
int num_samples() const
return the number of samples in the waveform
Definition EST_Wave.h:143