b1e8a6369c
- Added the capability to load up to 4 sound drivers and added methods to get pointers to the waveout, wavein and midiout services of a driver. - Rewrite of the SB16 midi file output code. In midimode 2 and 3 the midiout service of the 'file' driver is used. Removed obsolete midi file handling. - Re-implemented the closemidioutput() method to make runtime changes of the midi setup work with the new code.
99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2013-2015 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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// ALSA PCM input/output and MIDI output support written by Volker Ruppert
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#if BX_HAVE_ALSASOUND
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#define BX_SOUND_ALSA_BUFSIZE BX_SOUNDLOW_WAVEPACKETSIZE * 2
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#include <alsa/asoundlib.h>
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typedef struct {
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snd_pcm_t *handle;
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snd_pcm_uframes_t frames;
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int alsa_bufsize, audio_bufsize;
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char *buffer;
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} alsa_pcm_t;
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class bx_soundlow_waveout_alsa_c : public bx_soundlow_waveout_c {
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public:
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bx_soundlow_waveout_alsa_c();
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virtual ~bx_soundlow_waveout_alsa_c();
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virtual int openwaveoutput(const char *wavedev);
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virtual int set_pcm_params(bx_pcm_param_t *param);
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virtual int get_packetsize();
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virtual int output(int length, Bit8u data[]);
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private:
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alsa_pcm_t alsa_waveout;
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};
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class bx_soundlow_wavein_alsa_c : public bx_soundlow_wavein_c {
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public:
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bx_soundlow_wavein_alsa_c();
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virtual ~bx_soundlow_wavein_alsa_c();
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virtual int openwaveinput(const char *wavedev, sound_record_handler_t rh);
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virtual int startwaverecord(bx_pcm_param_t *param);
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virtual int getwavepacket(int length, Bit8u data[]);
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virtual int stopwaverecord();
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static void record_timer_handler(void *);
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void record_timer(void);
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private:
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alsa_pcm_t alsa_wavein;
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bx_pcm_param_t wavein_param;
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Bit8u audio_buffer[BX_SOUND_ALSA_BUFSIZE];
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};
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class bx_soundlow_midiout_alsa_c : public bx_soundlow_midiout_c {
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public:
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bx_soundlow_midiout_alsa_c();
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virtual ~bx_soundlow_midiout_alsa_c();
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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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private:
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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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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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};
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class bx_sound_alsa_c : public bx_sound_lowlevel_c {
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public:
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bx_sound_alsa_c();
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virtual ~bx_sound_alsa_c() {}
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virtual bx_soundlow_waveout_c* get_waveout();
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virtual bx_soundlow_wavein_c* get_wavein();
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virtual bx_soundlow_midiout_c* get_midiout();
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};
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#endif
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