sndfile-play-beos.cpp
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上传日期:2022-01-05
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- /*
- ** Copyright (C) 2001 Marcus Overhagen <marcus@overhagen.de>
- **
- ** This program 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 of the License, or
- ** (at your option) any later version.
- **
- ** This program 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 this program; if not, write to the Free Software
- ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #include <stdio.h>
- #include <Application.h>
- #include <SoundPlayer.h>
- #include <string.h>
- #include <sndfile.h>
- #define BUFFER_LEN 1024
- /*------------------------------------------------------------------------------
- ** BeOS functions for playing a sound.
- */
- #if defined (__BEOS__)
- struct shared_data
- {
- BSoundPlayer *player;
- SNDFILE *sndfile;
- SF_INFO sfinfo;
- sem_id finished;
- };
- static void
- buffer_callback(void *theCookie, void *buf, size_t size, const media_raw_audio_format &format)
- {
- shared_data *data = (shared_data *)theCookie;
- short *buffer = (short *)buf;
- int count = size / sizeof(short);
- int m, readcount;
- if (!data->player->HasData())
- return;
- readcount = sf_read_short(data->sndfile, buffer, count);
- if (readcount == 0)
- { data->player->SetHasData(false);
- release_sem(data->finished);
- }
- if (readcount < count)
- { for (m = readcount ; m < count ; m++)
- buffer [m] = 0 ;
- }
- if (data->sfinfo.pcmbitwidth < 16)
- { for (m = 0 ; m < count ; m++)
- buffer [m] *= 256 ;
- }
- }
- static void
- beos_play (int argc, char *argv [])
- {
- shared_data data;
- status_t status;
- int k;
- /* BSoundPlayer requires a BApplication object */
- BApplication app("application/x-vnd.MarcusOverhagen-sfplay");
- for (k = 1 ; k < argc ; k++)
- { printf ("Playing %sn", argv [k]) ;
- if (! (data.sndfile = sf_open_read (argv [k], &data.sfinfo)))
- { sf_perror (NULL) ;
- continue ;
- } ;
-
- if (data.sfinfo.channels < 1 || data.sfinfo.channels > 2)
- { printf ("Error : channels = %d.n", data.sfinfo.channels) ;
- sf_close (data.sndfile) ;
- continue ;
- } ;
- data.finished = create_sem(0,"finished");
- media_raw_audio_format format =
- { data.sfinfo.samplerate,
- data.sfinfo.channels,
- media_raw_audio_format::B_AUDIO_SHORT,
- B_HOST_IS_LENDIAN ? B_MEDIA_LITTLE_ENDIAN : B_MEDIA_BIG_ENDIAN,
- BUFFER_LEN * sizeof(short)
- };
- BSoundPlayer player(&format,"player",buffer_callback,NULL,&data);
- data.player = &player;
-
- if ((status = player.InitCheck()) != B_OK)
- {
- printf ("Error : BSoundPlayer init failed, %s.n", strerror(status)) ;
- delete_sem(data.finished);
- sf_close (data.sndfile) ;
- continue ;
- }
- player.SetVolume(1.0);
- player.Start();
- player.SetHasData(true);
- acquire_sem(data.finished);
- player.Stop();
- delete_sem(data.finished);
-
- sf_close (data.sndfile) ;
- } ;
- } /* beos_play */
- #endif
- /*==============================================================================
- ** Main function.
- */
- int
- main (int argc, char *argv [])
- {
- if (argc < 2)
- { printf ("Usage : %s <input sound file>nn", argv [0]) ;
- return 1 ;
- } ;
-
- beos_play (argc, argv) ;
- return 0 ;
- } /* main */
-