82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001-2011 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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/////////////////////////////////////////////////////////////////////////
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// Josef Drexler coded the original version of the lowlevel sound support
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// for Linux using OSS. The current version also supports OSS on FreeBSD and
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// ALSA PCM output on Linux.
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#if (defined(linux) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__))
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#define BX_SOUND_LINUX_BUFSIZE BX_SOUND_OUTPUT_WAVEPACKETSIZE * 2
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#if BX_HAVE_ALSASOUND
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#include <alsa/asoundlib.h>
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#endif
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class bx_sound_linux_c : public bx_sound_output_c {
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public:
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bx_sound_linux_c(logfunctions *dev);
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virtual ~bx_sound_linux_c();
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virtual int waveready();
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virtual int midiready();
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virtual int openmidioutput(const char *mididev);
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virtual int sendmidicommand(int delta, int command, int length, Bit8u data[]);
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virtual int closemidioutput();
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virtual int openwaveoutput(const char *wavedev);
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virtual int startwaveplayback(int frequency, int bits, int stereo, int format);
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virtual int sendwavepacket(int length, Bit8u data[]);
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virtual int stopwaveplayback();
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virtual int closewaveoutput();
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private:
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#if BX_HAVE_ALSASOUND
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int alsa_seq_open(const char *alsadev);
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int alsa_seq_output(int delta, int command, int length, Bit8u data[]);
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int alsa_pcm_open(int frequency, int bits, int stereo, int format);
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int alsa_pcm_write();
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bx_bool use_alsa_seq;
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bx_bool use_alsa_pcm;
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struct {
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snd_seq_t *handle;
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int source_port;
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} alsa_seq;
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struct {
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snd_pcm_t *handle;
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snd_pcm_uframes_t frames;
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} alsa_pcm;
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int dir, alsa_bufsize, audio_bufsize;
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char *alsa_buffer;
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#endif
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FILE *midi;
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char *wavedevice;
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int wave;
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Bit8u audio_buffer[BX_SOUND_LINUX_BUFSIZE];
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int oldfreq,oldbits,oldstereo,oldformat;
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};
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#endif
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