home *** CD-ROM | disk | FTP | other *** search
- /* sparc_obuffer.h
-
- Output buffer for Sun SPARC systems written by
- Tobias Bading (bading@cs.tu-berlin.de)
-
- Idea and first implementation for u-law output with fast downsampling by
- Jim Boucher (jboucher@flash.bu.edu)
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef SPARC_OBUFFER_H
- #define SPARC_OBUFFER_H
-
- #ifdef SPARC
-
- #include "all.h"
- #include "args.h"
- #include "obuffer.h"
-
- // a class for direct sound output on SPARC 10 machines (dbri device)
- // or if ULAW is defined:
- // a class for direct sound output on SPARCs using a 8 kHz
- // 8-bit u-law audio device: (audioamd)
- class SparcObuffer : public Obuffer
- {
- private:
- #ifdef ULAW
- ulawsample buffer[OBUFFERSIZE >> 1]; // mono only
- ulawsample *bufferp;
- #else
- int16 buffer[OBUFFERSIZE];
- int16 *bufferp[MAXCHANNELS];
- uint32 channels;
- #endif
- static int audio_fd;
-
- static int open_audio_device (void);
- #ifdef Solaris
- static void get_device_type (int fd, audio_device *);
- #else
- static int get_device_type (int fd);
- #endif
-
- public:
- #ifdef ULAW
- SparcObuffer (MPEG_Args *maplay_args);
- #else
- SparcObuffer (uint32 number_of_channels, MPEG_ARGS *maplay_args);
- #endif
- ~SparcObuffer (void);
- void append (uint32 channel, int16 value);
- void write_buffer (int dummy);
-
- #ifdef SEEK_STOP
- void clear_buffer(void);
- void set_stop_flag(void);
- #endif // SEEK_STOP
-
- #ifdef ULAW
- static BOOL class_suitable (uint32 number_of_channels, BOOL force_amd);
- // returnvalue == False: no u-law output possible (class unsuitable)
- #else
- static BOOL class_suitable (void);
- // returnvalue == False: no 16-bit output possible (class unsuitable)
- #endif
- };
- #endif // SPARC
-
- #endif // SPARC_OBUFFER_H
-