sndfile-play.c
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上传日期:2022-01-05
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- /*
- ** Copyright (C) 1999-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
- **
- ** All rights reserved.
- **
- ** Redistribution and use in source and binary forms, with or without
- ** modification, are permitted provided that the following conditions are
- ** met:
- **
- ** * Redistributions of source code must retain the above copyright
- ** notice, this list of conditions and the following disclaimer.
- ** * 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.
- ** * Neither the author nor the names of any contributors may be used
- ** to endorse or promote products derived from this software without
- ** specific prior written permission.
- **
- ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ** "AS IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER OR
- ** CONTRIBUTORS 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.
- */
- #include "sfconfig.h"
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <errno.h>
- #if HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #if HAVE_ALSA_ASOUNDLIB_H
- #define ALSA_PCM_NEW_HW_PARAMS_API
- #define ALSA_PCM_NEW_SW_PARAMS_API
- #include <alsa/asoundlib.h>
- #include <sys/time.h>
- #endif
- #if defined (__linux__) || defined (__FreeBSD_kernel__) || defined (__FreeBSD__)
- #include <fcntl.h>
- #include <sys/ioctl.h>
- #include <sys/soundcard.h>
- #elif (defined (__MACH__) && defined (__APPLE__))
- #include <Carbon.h>
- #include <CoreAudio/AudioHardware.h>
- #elif (defined (sun) && defined (unix))
- #include <fcntl.h>
- #include <sys/ioctl.h>
- #include <sys/audioio.h>
- #elif (OS_IS_WIN32 == 1)
- #include <windows.h>
- #include <mmsystem.h>
- #endif
- #include <sndfile.h>
- #define SIGNED_SIZEOF(x) ((int) sizeof (x))
- #define BUFFER_LEN (2048)
- /*------------------------------------------------------------------------------
- ** Linux/OSS functions for playing a sound.
- */
- #if HAVE_ALSA_ASOUNDLIB_H
- static snd_pcm_t * alsa_open (int channels, unsigned srate, int realtime) ;
- static int alsa_write_float (snd_pcm_t *alsa_dev, float *data, int frames, int channels) ;
- static void
- alsa_play (int argc, char *argv [])
- { static float buffer [BUFFER_LEN] ;
- SNDFILE *sndfile ;
- SF_INFO sfinfo ;
- snd_pcm_t * alsa_dev ;
- int k, readcount, subformat ;
- for (k = 1 ; k < argc ; k++)
- { memset (&sfinfo, 0, sizeof (sfinfo)) ;
- printf ("Playing %sn", argv [k]) ;
- if (! (sndfile = sf_open (argv [k], SFM_READ, &sfinfo)))
- { puts (sf_strerror (NULL)) ;
- continue ;
- } ;
- if (sfinfo.channels < 1 || sfinfo.channels > 2)
- { printf ("Error : channels = %d.n", sfinfo.channels) ;
- continue ;
- } ;
- if ((alsa_dev = alsa_open (sfinfo.channels, (unsigned) sfinfo.samplerate, SF_FALSE)) == NULL)
- continue ;
- subformat = sfinfo.format & SF_FORMAT_SUBMASK ;
- if (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE)
- { double scale ;
- int m ;
- sf_command (sndfile, SFC_CALC_SIGNAL_MAX, &scale, sizeof (scale)) ;
- if (scale < 1e-10)
- scale = 1.0 ;
- else
- scale = 32700.0 / scale ;
- while ((readcount = sf_read_float (sndfile, buffer, BUFFER_LEN)))
- { for (m = 0 ; m < readcount ; m++)
- buffer [m] *= scale ;
- alsa_write_float (alsa_dev, buffer, BUFFER_LEN / sfinfo.channels, sfinfo.channels) ;
- } ;
- }
- else
- { while ((readcount = sf_read_float (sndfile, buffer, BUFFER_LEN)))
- alsa_write_float (alsa_dev, buffer, BUFFER_LEN / sfinfo.channels, sfinfo.channels) ;
- } ;
- snd_pcm_drain (alsa_dev) ;
- snd_pcm_close (alsa_dev) ;
- sf_close (sndfile) ;
- } ;
- return ;
- } /* alsa_play */
- static snd_pcm_t *
- alsa_open (int channels, unsigned samplerate, int realtime)
- { const char * device = "default" ;
- snd_pcm_t *alsa_dev = NULL ;
- snd_pcm_hw_params_t *hw_params ;
- snd_pcm_uframes_t buffer_size ;
- snd_pcm_uframes_t alsa_period_size, alsa_buffer_frames ;
- snd_pcm_sw_params_t *sw_params ;
- int err ;
- if (realtime)
- { alsa_period_size = 256 ;
- alsa_buffer_frames = 3 * alsa_period_size ;
- }
- else
- { alsa_period_size = 1024 ;
- alsa_buffer_frames = 4 * alsa_period_size ;
- } ;
- if ((err = snd_pcm_open (&alsa_dev, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0)
- { fprintf (stderr, "cannot open audio device "%s" (%s)n", device, snd_strerror (err)) ;
- goto catch_error ;
- } ;
- snd_pcm_nonblock (alsa_dev, 0) ;
- if ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0)
- { fprintf (stderr, "cannot allocate hardware parameter structure (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_any (alsa_dev, hw_params)) < 0)
- { fprintf (stderr, "cannot initialize hardware parameter structure (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_access (alsa_dev, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
- { fprintf (stderr, "cannot set access type (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_format (alsa_dev, hw_params, SND_PCM_FORMAT_FLOAT)) < 0)
- { fprintf (stderr, "cannot set sample format (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_rate_near (alsa_dev, hw_params, &samplerate, 0)) < 0)
- { fprintf (stderr, "cannot set sample rate (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_channels (alsa_dev, hw_params, channels)) < 0)
- { fprintf (stderr, "cannot set channel count (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_buffer_size_near (alsa_dev, hw_params, &alsa_buffer_frames)) < 0)
- { fprintf (stderr, "cannot set buffer size (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params_set_period_size_near (alsa_dev, hw_params, &alsa_period_size, 0)) < 0)
- { fprintf (stderr, "cannot set period size (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_hw_params (alsa_dev, hw_params)) < 0)
- { fprintf (stderr, "cannot set parameters (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- /* extra check: if we have only one period, this code won't work */
- snd_pcm_hw_params_get_period_size (hw_params, &alsa_period_size, 0) ;
- snd_pcm_hw_params_get_buffer_size (hw_params, &buffer_size) ;
- if (alsa_period_size == buffer_size)
- { fprintf (stderr, "Can't use period equal to buffer size (%lu == %lu)", alsa_period_size, buffer_size) ;
- goto catch_error ;
- } ;
- snd_pcm_hw_params_free (hw_params) ;
- if ((err = snd_pcm_sw_params_malloc (&sw_params)) != 0)
- { fprintf (stderr, "%s: snd_pcm_sw_params_malloc: %s", __func__, snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_sw_params_current (alsa_dev, sw_params)) != 0)
- { fprintf (stderr, "%s: snd_pcm_sw_params_current: %s", __func__, snd_strerror (err)) ;
- goto catch_error ;
- } ;
- /* note: set start threshold to delay start until the ring buffer is full */
- snd_pcm_sw_params_current (alsa_dev, sw_params) ;
- if ((err = snd_pcm_sw_params_set_start_threshold (alsa_dev, sw_params, buffer_size)) < 0)
- { fprintf (stderr, "cannot set start threshold (%s)n", snd_strerror (err)) ;
- goto catch_error ;
- } ;
- if ((err = snd_pcm_sw_params (alsa_dev, sw_params)) != 0)
- { fprintf (stderr, "%s: snd_pcm_sw_params: %s", __func__, snd_strerror (err)) ;
- goto catch_error ;
- } ;
- snd_pcm_sw_params_free (sw_params) ;
- snd_pcm_reset (alsa_dev) ;
- catch_error :
- if (err < 0 && alsa_dev != NULL)
- { snd_pcm_close (alsa_dev) ;
- return NULL ;
- } ;
- return alsa_dev ;
- } /* alsa_open */
- static int
- alsa_write_float (snd_pcm_t *alsa_dev, float *data, int frames, int channels)
- { static int epipe_count = 0 ;
- int total = 0 ;
- int retval ;
- if (epipe_count > 0)
- epipe_count -- ;
- while (total < frames)
- { retval = snd_pcm_writei (alsa_dev, data + total * channels, frames - total) ;
- if (retval >= 0)
- { total += retval ;
- if (total == frames)
- return total ;
- continue ;
- } ;
- switch (retval)
- { case -EAGAIN :
- puts ("alsa_write_float: EAGAIN") ;
- continue ;
- break ;
- case -EPIPE :
- if (epipe_count > 0)
- { printf ("alsa_write_float: EPIPE %dn", epipe_count) ;
- if (epipe_count > 140)
- return retval ;
- } ;
- epipe_count += 100 ;
- #if 0
- if (0)
- { snd_pcm_status_t *status ;
- snd_pcm_status_alloca (&status) ;
- if ((retval = snd_pcm_status (alsa_dev, status)) < 0)
- fprintf (stderr, "alsa_out: xrun. can't determine lengthn") ;
- else if (snd_pcm_status_get_state (status) == SND_PCM_STATE_XRUN)
- { struct timeval now, diff, tstamp ;
- gettimeofday (&now, 0) ;
- snd_pcm_status_get_trigger_tstamp (status, &tstamp) ;
- timersub (&now, &tstamp, &diff) ;
- fprintf (stderr, "alsa_write_float xrun: of at least %.3f msecs. resetting streamn",
- diff.tv_sec * 1000 + diff.tv_usec / 1000.0) ;
- }
- else
- fprintf (stderr, "alsa_write_float: xrun. can't determine lengthn") ;
- } ;
- #endif
- snd_pcm_prepare (alsa_dev) ;
- break ;
- case -EBADFD :
- fprintf (stderr, "alsa_write_float: Bad PCM state.n") ;
- return 0 ;
- break ;
- case -ESTRPIPE :
- fprintf (stderr, "alsa_write_float: Suspend event.n") ;
- return 0 ;
- break ;
- case -EIO :
- puts ("alsa_write_float: EIO") ;
- return 0 ;
- default :
- fprintf (stderr, "alsa_write_float: retval = %dn", retval) ;
- return 0 ;
- break ;
- } ; /* switch */
- } ; /* while */
- return total ;
- } /* alsa_write_float */
- #endif /* HAVE_ALSA_ASOUNDLIB_H */
- /*------------------------------------------------------------------------------
- ** Linux/OSS functions for playing a sound.
- */
- #if defined (__linux__) || defined (__FreeBSD_kernel__) || defined (__FreeBSD__)
- static int opensoundsys_open_device (int channels, int srate) ;
- static void
- opensoundsys_play (int argc, char *argv [])
- { static short buffer [BUFFER_LEN] ;
- SNDFILE *sndfile ;
- SF_INFO sfinfo ;
- int k, audio_device, readcount, writecount, subformat ;
- for (k = 1 ; k < argc ; k++)
- { memset (&sfinfo, 0, sizeof (sfinfo)) ;
- printf ("Playing %sn", argv [k]) ;
- if (! (sndfile = sf_open (argv [k], SFM_READ, &sfinfo)))
- { puts (sf_strerror (NULL)) ;
- continue ;
- } ;
- if (sfinfo.channels < 1 || sfinfo.channels > 2)
- { printf ("Error : channels = %d.n", sfinfo.channels) ;
- continue ;
- } ;
- audio_device = opensoundsys_open_device (sfinfo.channels, sfinfo.samplerate) ;
- subformat = sfinfo.format & SF_FORMAT_SUBMASK ;
- if (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE)
- { static float float_buffer [BUFFER_LEN] ;
- double scale ;
- int m ;
- sf_command (sndfile, SFC_CALC_SIGNAL_MAX, &scale, sizeof (scale)) ;
- if (scale < 1e-10)
- scale = 1.0 ;
- else
- scale = 32700.0 / scale ;
- while ((readcount = sf_read_float (sndfile, float_buffer, BUFFER_LEN)))
- { for (m = 0 ; m < readcount ; m++)
- buffer [m] = scale * float_buffer [m] ;
- writecount = write (audio_device, buffer, readcount * sizeof (short)) ;
- } ;
- }
- else
- { while ((readcount = sf_read_short (sndfile, buffer, BUFFER_LEN)))
- writecount = write (audio_device, buffer, readcount * sizeof (short)) ;
- } ;
- if (ioctl (audio_device, SNDCTL_DSP_POST, 0) == -1)
- perror ("ioctl (SNDCTL_DSP_POST) ") ;
- if (ioctl (audio_device, SNDCTL_DSP_SYNC, 0) == -1)
- perror ("ioctl (SNDCTL_DSP_SYNC) ") ;
- close (audio_device) ;
- sf_close (sndfile) ;
- } ;
- return ;
- } /* opensoundsys_play */
- static int
- opensoundsys_open_device (int channels, int srate)
- { int fd, stereo, fmt ;
- if ((fd = open ("/dev/dsp", O_WRONLY, 0)) == -1 &&
- (fd = open ("/dev/sound/dsp", O_WRONLY, 0)) == -1)
- { perror ("opensoundsys_open_device : open ") ;
- exit (1) ;
- } ;
- stereo = 0 ;
- if (ioctl (fd, SNDCTL_DSP_STEREO, &stereo) == -1)
- { /* Fatal error */
- perror ("opensoundsys_open_device : stereo ") ;
- exit (1) ;
- } ;
- if (ioctl (fd, SNDCTL_DSP_RESET, 0))
- { perror ("opensoundsys_open_device : reset ") ;
- exit (1) ;
- } ;
- fmt = CPU_IS_BIG_ENDIAN ? AFMT_S16_BE : AFMT_S16_LE ;
- if (ioctl (fd, SNDCTL_DSP_SETFMT, &fmt) != 0)
- { perror ("opensoundsys_open_device : set format ") ;
- exit (1) ;
- } ;
- if (ioctl (fd, SNDCTL_DSP_CHANNELS, &channels) != 0)
- { perror ("opensoundsys_open_device : channels ") ;
- exit (1) ;
- } ;
- if (ioctl (fd, SNDCTL_DSP_SPEED, &srate) != 0)
- { perror ("opensoundsys_open_device : sample rate ") ;
- exit (1) ;
- } ;
- if (ioctl (fd, SNDCTL_DSP_SYNC, 0) != 0)
- { perror ("opensoundsys_open_device : sync ") ;
- exit (1) ;
- } ;
- return fd ;
- } /* opensoundsys_open_device */
- #endif /* __linux__ */
- /*------------------------------------------------------------------------------
- ** Mac OS X functions for playing a sound.
- */
- #if (defined (__MACH__) && defined (__APPLE__)) /* MacOSX */
- typedef struct
- { AudioStreamBasicDescription format ;
- UInt32 buf_size ;
- AudioDeviceID device ;
- SNDFILE *sndfile ;
- SF_INFO sfinfo ;
- int fake_stereo ;
- int done_playing ;
- } MacOSXAudioData ;
- #include <math.h>
- static OSStatus
- macosx_audio_out_callback (AudioDeviceID device, const AudioTimeStamp* current_time,
- const AudioBufferList* data_in, const AudioTimeStamp* time_in,
- AudioBufferList* data_out, const AudioTimeStamp* time_out,
- void* client_data)
- { MacOSXAudioData *audio_data ;
- int size, sample_count, read_count, k ;
- float *buffer ;
- /* Prevent compiler warnings. */
- device = device ;
- current_time = current_time ;
- data_in = data_in ;
- time_in = time_in ;
- time_out = time_out ;
- audio_data = (MacOSXAudioData*) client_data ;
- size = data_out->mBuffers [0].mDataByteSize ;
- sample_count = size / sizeof (float) ;
- buffer = (float*) data_out->mBuffers [0].mData ;
- if (audio_data->fake_stereo != 0)
- { read_count = sf_read_float (audio_data->sndfile, buffer, sample_count / 2) ;
- for (k = read_count - 1 ; k >= 0 ; k--)
- { buffer [2 * k ] = buffer [k] ;
- buffer [2 * k + 1] = buffer [k] ;
- } ;
- read_count *= 2 ;
- }
- else
- read_count = sf_read_float (audio_data->sndfile, buffer, sample_count) ;
- /* Fill the remainder with zeroes. */
- if (read_count < sample_count)
- { if (audio_data->fake_stereo == 0)
- memset (&(buffer [read_count]), 0, (sample_count - read_count) * sizeof (float)) ;
- /* Tell the main application to terminate. */
- audio_data->done_playing = SF_TRUE ;
- } ;
- return noErr ;
- } /* macosx_audio_out_callback */
- static void
- macosx_play (int argc, char *argv [])
- { MacOSXAudioData audio_data ;
- OSStatus err ;
- UInt32 count, buffer_size ;
- int k ;
- audio_data.fake_stereo = 0 ;
- audio_data.device = kAudioDeviceUnknown ;
- /* get the default output device for the HAL */
- count = sizeof (AudioDeviceID) ;
- if ((err = AudioHardwareGetProperty (kAudioHardwarePropertyDefaultOutputDevice,
- &count, (void *) &(audio_data.device))) != noErr)
- { printf ("AudioHardwareGetProperty (kAudioDevicePropertyDefaultOutputDevice) failed.n") ;
- return ;
- } ;
- /* get the buffersize that the default device uses for IO */
- count = sizeof (UInt32) ;
- if ((err = AudioDeviceGetProperty (audio_data.device, 0, false, kAudioDevicePropertyBufferSize,
- &count, &buffer_size)) != noErr)
- { printf ("AudioDeviceGetProperty (kAudioDevicePropertyBufferSize) failed.n") ;
- return ;
- } ;
- /* get a description of the data format used by the default device */
- count = sizeof (AudioStreamBasicDescription) ;
- if ((err = AudioDeviceGetProperty (audio_data.device, 0, false, kAudioDevicePropertyStreamFormat,
- &count, &(audio_data.format))) != noErr)
- { printf ("AudioDeviceGetProperty (kAudioDevicePropertyStreamFormat) failed.n") ;
- return ;
- } ;
- /* Base setup completed. Now play files. */
- for (k = 1 ; k < argc ; k++)
- { printf ("Playing %sn", argv [k]) ;
- if (! (audio_data.sndfile = sf_open (argv [k], SFM_READ, &(audio_data.sfinfo))))
- { puts (sf_strerror (NULL)) ;
- continue ;
- } ;
- if (audio_data.sfinfo.channels < 1 || audio_data.sfinfo.channels > 2)
- { printf ("Error : channels = %d.n", audio_data.sfinfo.channels) ;
- continue ;
- } ;
- audio_data.format.mSampleRate = audio_data.sfinfo.samplerate ;
- if (audio_data.sfinfo.channels == 1)
- { audio_data.format.mChannelsPerFrame = 2 ;
- audio_data.fake_stereo = 1 ;
- }
- else
- audio_data.format.mChannelsPerFrame = audio_data.sfinfo.channels ;
- if ((err = AudioDeviceSetProperty (audio_data.device, NULL, 0, false, kAudioDevicePropertyStreamFormat,
- sizeof (AudioStreamBasicDescription), &(audio_data.format))) != noErr)
- { printf ("AudioDeviceSetProperty (kAudioDevicePropertyStreamFormat) failed.n") ;
- return ;
- } ;
- /* we want linear pcm */
- if (audio_data.format.mFormatID != kAudioFormatLinearPCM)
- return ;
- /* Fire off the device. */
- if ((err = AudioDeviceAddIOProc (audio_data.device, macosx_audio_out_callback,
- (void *) &audio_data)) != noErr)
- { printf ("AudioDeviceAddIOProc failed.n") ;
- return ;
- } ;
- err = AudioDeviceStart (audio_data.device, macosx_audio_out_callback) ;
- if (err != noErr)
- return ;
- audio_data.done_playing = SF_FALSE ;
- while (audio_data.done_playing == SF_FALSE)
- usleep (10 * 1000) ; /* 10 000 milliseconds. */
- if ((err = AudioDeviceStop (audio_data.device, macosx_audio_out_callback)) != noErr)
- { printf ("AudioDeviceStop failed.n") ;
- return ;
- } ;
- err = AudioDeviceRemoveIOProc (audio_data.device, macosx_audio_out_callback) ;
- if (err != noErr)
- { printf ("AudioDeviceRemoveIOProc failed.n") ;
- return ;
- } ;
- sf_close (audio_data.sndfile) ;
- } ;
- return ;
- } /* macosx_play */
- #endif /* MacOSX */
- /*------------------------------------------------------------------------------
- ** Win32 functions for playing a sound.
- **
- ** This API sucks. Its needlessly complicated and is *WAY* too loose with
- ** passing pointers arounf in integers and and using char* pointers to
- ** point to data instead of short*. It plain sucks!
- */
- #if (OS_IS_WIN32 == 1)
- #define WIN32_BUFFER_LEN (1<<15)
- typedef struct
- { HWAVEOUT hwave ;
- WAVEHDR whdr [2] ;
- CRITICAL_SECTION mutex ; /* to control access to BuffersInUSe */
- HANDLE Event ; /* signal that a buffer is free */
- short buffer [WIN32_BUFFER_LEN / sizeof (short)] ;
- int current, bufferlen ;
- int BuffersInUse ;
- SNDFILE *sndfile ;
- SF_INFO sfinfo ;
- sf_count_t remaining ;
- } Win32_Audio_Data ;
- static void
- win32_play_data (Win32_Audio_Data *audio_data)
- { int thisread, readcount ;
- /* fill a buffer if there is more data and we can read it sucessfully */
- readcount = (audio_data->remaining > audio_data->bufferlen) ? audio_data->bufferlen : (int) audio_data->remaining ;
- thisread = (int) sf_read_short (audio_data->sndfile, (short *) (audio_data->whdr [audio_data->current].lpData), readcount) ;
- audio_data->remaining -= thisread ;
- if (thisread > 0)
- { /* Fix buffer length if this is only a partial block. */
- if (thisread < audio_data->bufferlen)
- audio_data->whdr [audio_data->current].dwBufferLength = thisread * sizeof (short) ;
- /* Queue the WAVEHDR */
- waveOutWrite (audio_data->hwave, (LPWAVEHDR) &(audio_data->whdr [audio_data->current]), sizeof (WAVEHDR)) ;
- /* count another buffer in use */
- EnterCriticalSection (&audio_data->mutex) ;
- audio_data->BuffersInUse ++ ;
- LeaveCriticalSection (&audio_data->mutex) ;
- /* use the other buffer next time */
- audio_data->current = (audio_data->current + 1) % 2 ;
- } ;
- return ;
- } /* win32_play_data */
- static void CALLBACK
- win32_audio_out_callback (HWAVEOUT hwave, UINT msg, DWORD_PTR data, DWORD param1, DWORD param2)
- { Win32_Audio_Data *audio_data ;
- /* Prevent compiler warnings. */
- hwave = hwave ;
- param1 = param2 ;
- if (data == 0)
- return ;
- /*
- ** I consider this technique of passing a pointer via an integer as
- ** fundamentally broken but thats the way microsoft has defined the
- ** interface.
- */
- audio_data = (Win32_Audio_Data*) data ;
- /* let main loop know a buffer is free */
- if (msg == MM_WOM_DONE)
- { EnterCriticalSection (&audio_data->mutex) ;
- audio_data->BuffersInUse -- ;
- LeaveCriticalSection (&audio_data->mutex) ;
- SetEvent (audio_data->Event) ;
- } ;
- return ;
- } /* win32_audio_out_callback */
- static void
- win32_play (int argc, char *argv [])
- { Win32_Audio_Data audio_data ;
- WAVEFORMATEX wf ;
- int k, error ;
- audio_data.sndfile = NULL ;
- audio_data.hwave = 0 ;
- for (k = 1 ; k < argc ; k++)
- { printf ("Playing %sn", argv [k]) ;
- if (! (audio_data.sndfile = sf_open (argv [k], SFM_READ, &(audio_data.sfinfo))))
- { puts (sf_strerror (NULL)) ;
- continue ;
- } ;
- audio_data.remaining = audio_data.sfinfo.frames * audio_data.sfinfo.channels ;
- audio_data.current = 0 ;
- InitializeCriticalSection (&audio_data.mutex) ;
- audio_data.Event = CreateEvent (0, FALSE, FALSE, 0) ;
- wf.nChannels = audio_data.sfinfo.channels ;
- wf.wFormatTag = WAVE_FORMAT_PCM ;
- wf.cbSize = 0 ;
- wf.wBitsPerSample = 16 ;
- wf.nSamplesPerSec = audio_data.sfinfo.samplerate ;
- wf.nBlockAlign = audio_data.sfinfo.channels * sizeof (short) ;
- wf.nAvgBytesPerSec = wf.nBlockAlign * wf.nSamplesPerSec ;
- error = waveOutOpen (&(audio_data.hwave), WAVE_MAPPER, &wf, (DWORD_PTR) win32_audio_out_callback,
- (DWORD_PTR) &audio_data, CALLBACK_FUNCTION) ;
- if (error)
- { puts ("waveOutOpen failed.") ;
- audio_data.hwave = 0 ;
- continue ;
- } ;
- audio_data.whdr [0].lpData = (char*) audio_data.buffer ;
- audio_data.whdr [1].lpData = ((char*) audio_data.buffer) + sizeof (audio_data.buffer) / 2 ;
- audio_data.whdr [0].dwBufferLength = sizeof (audio_data.buffer) / 2 ;
- audio_data.whdr [1].dwBufferLength = sizeof (audio_data.buffer) / 2 ;
- audio_data.whdr [0].dwFlags = 0 ;
- audio_data.whdr [1].dwFlags = 0 ;
- /* length of each audio buffer in samples */
- audio_data.bufferlen = sizeof (audio_data.buffer) / 2 / sizeof (short) ;
- /* Prepare the WAVEHDRs */
- if ((error = waveOutPrepareHeader (audio_data.hwave, &(audio_data.whdr [0]), sizeof (WAVEHDR))))
- { printf ("waveOutPrepareHeader [0] failed : %08Xn", error) ;
- waveOutClose (audio_data.hwave) ;
- continue ;
- } ;
- if ((error = waveOutPrepareHeader (audio_data.hwave, &(audio_data.whdr [1]), sizeof (WAVEHDR))))
- { printf ("waveOutPrepareHeader [1] failed : %08Xn", error) ;
- waveOutUnprepareHeader (audio_data.hwave, &(audio_data.whdr [0]), sizeof (WAVEHDR)) ;
- waveOutClose (audio_data.hwave) ;
- continue ;
- } ;
- /* Fill up both buffers with audio data */
- audio_data.BuffersInUse = 0 ;
- win32_play_data (&audio_data) ;
- win32_play_data (&audio_data) ;
- /* loop until both buffers are released */
- while (audio_data.BuffersInUse > 0)
- {
- /* wait for buffer to be released */
- WaitForSingleObject (audio_data.Event, INFINITE) ;
- /* refill the buffer if there is more data to play */
- win32_play_data (&audio_data) ;
- } ;
- waveOutUnprepareHeader (audio_data.hwave, &(audio_data.whdr [0]), sizeof (WAVEHDR)) ;
- waveOutUnprepareHeader (audio_data.hwave, &(audio_data.whdr [1]), sizeof (WAVEHDR)) ;
- waveOutClose (audio_data.hwave) ;
- audio_data.hwave = 0 ;
- DeleteCriticalSection (&audio_data.mutex) ;
- sf_close (audio_data.sndfile) ;
- } ;
- } /* win32_play */
- #endif /* Win32 */
- /*------------------------------------------------------------------------------
- ** Solaris.
- */
- #if (defined (sun) && defined (unix)) /* ie Solaris */
- static void
- solaris_play (int argc, char *argv [])
- { static short buffer [BUFFER_LEN] ;
- audio_info_t audio_info ;
- SNDFILE *sndfile ;
- SF_INFO sfinfo ;
- unsigned long delay_time ;
- long k, start_count, output_count, write_count, read_count ;
- int audio_fd, error, done ;
- for (k = 1 ; k < argc ; k++)
- { printf ("Playing %sn", argv [k]) ;
- if (! (sndfile = sf_open (argv [k], SFM_READ, &sfinfo)))
- { puts (sf_strerror (NULL)) ;
- continue ;
- } ;
- if (sfinfo.channels < 1 || sfinfo.channels > 2)
- { printf ("Error : channels = %d.n", sfinfo.channels) ;
- continue ;
- } ;
- /* open the audio device - write only, non-blocking */
- if ((audio_fd = open ("/dev/audio", O_WRONLY | O_NONBLOCK)) < 0)
- { perror ("open (/dev/audio) failed") ;
- return ;
- } ;
- /* Retrive standard values. */
- AUDIO_INITINFO (&audio_info) ;
- audio_info.play.sample_rate = sfinfo.samplerate ;
- audio_info.play.channels = sfinfo.channels ;
- audio_info.play.precision = 16 ;
- audio_info.play.encoding = AUDIO_ENCODING_LINEAR ;
- audio_info.play.gain = AUDIO_MAX_GAIN ;
- audio_info.play.balance = AUDIO_MID_BALANCE ;
- if ((error = ioctl (audio_fd, AUDIO_SETINFO, &audio_info)))
- { perror ("ioctl (AUDIO_SETINFO) failed") ;
- return ;
- } ;
- /* Delay time equal to 1/4 of a buffer in microseconds. */
- delay_time = (BUFFER_LEN * 1000000) / (audio_info.play.sample_rate * 4) ;
- done = 0 ;
- while (! done)
- { read_count = sf_read_short (sndfile, buffer, BUFFER_LEN) ;
- if (read_count < BUFFER_LEN)
- { memset (&(buffer [read_count]), 0, (BUFFER_LEN - read_count) * sizeof (short)) ;
- /* Tell the main application to terminate. */
- done = SF_TRUE ;
- } ;
- start_count = 0 ;
- output_count = BUFFER_LEN * sizeof (short) ;
- while (output_count > 0)
- { /* write as much data as possible */
- write_count = write (audio_fd, &(buffer [start_count]), output_count) ;
- if (write_count > 0)
- { output_count -= write_count ;
- start_count += write_count ;
- }
- else
- { /* Give the audio output time to catch up. */
- usleep (delay_time) ;
- } ;
- } ; /* while (outpur_count > 0) */
- } ; /* while (! done) */
- close (audio_fd) ;
- } ;
- return ;
- } /* solaris_play */
- #endif /* Solaris */
- /*==============================================================================
- ** Main function.
- */
- int
- main (int argc, char *argv [])
- {
- if (argc < 2)
- {
- printf ("nUsage : %s <input sound file>nn", argv [0]) ;
- #if (OS_IS_WIN32 == 1)
- printf ("This is a Unix style command line application whichn"
- "should be run in a MSDOS box or Command Shell window.nn") ;
- printf ("Sleeping for 5 seconds before exiting.nn") ;
- /* This is the officially blessed by microsoft way but I can't get
- ** it to link.
- ** Sleep (15) ;
- ** Instead, use this:
- */
- Sleep (5 * 1000) ;
- #endif
- return 1 ;
- } ;
- #if defined (__linux__)
- #if HAVE_ALSA_ASOUNDLIB_H
- if (access ("/proc/asound/cards", R_OK) == 0)
- alsa_play (argc, argv) ;
- else
- #endif
- opensoundsys_play (argc, argv) ;
- #elif defined (__FreeBSD_kernel__) || defined (__FreeBSD__)
- opensoundsys_play (argc, argv) ;
- #elif (defined (__MACH__) && defined (__APPLE__))
- macosx_play (argc, argv) ;
- #elif (defined (sun) && defined (unix))
- solaris_play (argc, argv) ;
- #elif (OS_IS_WIN32 == 1)
- win32_play (argc, argv) ;
- #elif defined (__BEOS__)
- printf ("This program cannot be compiled on BeOS.n") ;
- printf ("Instead, compile the file sfplay_beos.cpp.n") ;
- return 1 ;
- #else
- puts ("*** Playing sound not yet supported on this platform.") ;
- puts ("*** Please feel free to submit a patch.") ;
- return 1 ;
- #endif
- return 0 ;
- } /* main */