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- /*
- Copyright (C) 2001 Paul Davis
- Copyright (C) 2004 Grame
-
- 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 __JackAlsaDriver__
- #define __JackAlsaDriver__
-
- #include "JackAudioDriver.h"
- #include "JackThreadedDriver.h"
- #include "JackTime.h"
-
- #include "alsa_driver.h"
-
- namespace Jack
- {
-
- /*!
- \brief The ALSA driver.
- */
-
- class JackAlsaDriver : public JackAudioDriver
- {
-
- private:
-
- jack_driver_t* fDriver;
- int fReservedCaptureDevice;
- int fReservedPlaybackDevice;
-
- void alsa_driver_release_channel_dependent_memory(alsa_driver_t *driver);
- int alsa_driver_check_capabilities(alsa_driver_t *driver);
- int alsa_driver_check_card_type(alsa_driver_t *driver);
- int alsa_driver_hammerfall_hardware(alsa_driver_t *driver);
- int alsa_driver_hdsp_hardware(alsa_driver_t *driver);
- int alsa_driver_ice1712_hardware(alsa_driver_t *driver);
- int alsa_driver_usx2y_hardware(alsa_driver_t *driver);
- int alsa_driver_generic_hardware(alsa_driver_t *driver);
- int alsa_driver_hw_specific(alsa_driver_t *driver, int hw_monitoring,
- int hw_metering);
- int alsa_driver_setup_io_function_pointers (alsa_driver_t *driver);
- int alsa_driver_configure_stream(alsa_driver_t *driver, char *device_name,
- const char *stream_name,
- snd_pcm_t *handle,
- snd_pcm_hw_params_t *hw_params,
- snd_pcm_sw_params_t *sw_params,
- unsigned int *nperiodsp,
- unsigned long *nchns,
- unsigned long sample_width);
-
- int alsa_driver_set_parameters(alsa_driver_t *driver,
- jack_nframes_t frames_per_cycle,
- jack_nframes_t user_nperiods,
- jack_nframes_t rate);
-
- int alsa_driver_reset_parameters(alsa_driver_t *driver,
- jack_nframes_t frames_per_cycle,
- jack_nframes_t user_nperiods,
- jack_nframes_t rate);
-
- int alsa_driver_get_channel_addresses(alsa_driver_t *driver,
- snd_pcm_uframes_t *capture_avail,
- snd_pcm_uframes_t *playback_avail,
- snd_pcm_uframes_t *capture_offset,
- snd_pcm_uframes_t *playback_offset);
-
- jack_driver_t * alsa_driver_new(const char *name, char *playback_alsa_device,
- char *capture_alsa_device,
- jack_client_t *client,
- jack_nframes_t frames_per_cycle,
- jack_nframes_t user_nperiods,
- jack_nframes_t rate,
- int hw_monitoring,
- int hw_metering,
- int capturing,
- int playing,
- DitherAlgorithm dither,
- int soft_mode,
- int monitor,
- int user_capture_nchnls,
- int user_playback_nchnls,
- int shorts_first,
- jack_nframes_t capture_latency,
- jack_nframes_t playback_latency,
- alsa_midi_t *midi);
-
- void alsa_driver_delete(alsa_driver_t *driver);
- int alsa_driver_start(alsa_driver_t *driver);
- int alsa_driver_stop(alsa_driver_t *driver);
- int alsa_driver_read(alsa_driver_t *driver, jack_nframes_t nframes);
- int alsa_driver_write(alsa_driver_t *driver, jack_nframes_t nframes);
-
- jack_nframes_t alsa_driver_wait(alsa_driver_t *driver, int extra_fd, int *status, float
- *delayed_usecs);
-
- void alsa_driver_silence_untouched_channels(alsa_driver_t *driver,
- jack_nframes_t nframes);
-
- int alsa_driver_restart(alsa_driver_t *driver);
- int alsa_driver_xrun_recovery(alsa_driver_t *driver, float *delayed_usecs);
- void jack_driver_init(jack_driver_t *driver);
- void jack_driver_nt_init(jack_driver_nt_t * driver);
-
- public:
-
- JackAlsaDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
- : JackAudioDriver(name, alias, engine, table)
- ,fDriver(NULL)
- ,fReservedCaptureDevice(-1)
- ,fReservedPlaybackDevice(-1)
- {}
- virtual ~JackAlsaDriver()
- {}
-
- int Open(jack_nframes_t buffer_size,
- jack_nframes_t user_nperiods,
- jack_nframes_t samplerate,
- bool hw_monitoring,
- bool hw_metering,
- bool capturing,
- bool playing,
- DitherAlgorithm dither,
- bool soft_mode,
- bool monitor,
- int inchannels,
- int outchannels,
- bool shorts_first,
- const char* capture_driver_name,
- const char* playback_driver_name,
- jack_nframes_t capture_latency,
- jack_nframes_t playback_latency,
- const char* midi_driver_name);
-
- int Close();
- int Attach();
- int Detach();
-
- int Start();
- int Stop();
-
- int Read();
- int Write();
-
- // BufferSize can be changed
- bool IsFixedBufferSize()
- {
- return false;
- }
-
- int SetBufferSize(jack_nframes_t buffer_size);
-
- // jack api emulation for the midi driver
- int is_realtime() const;
- int create_thread(pthread_t *thread, int prio, int rt, void *(*start_func)(void*), void *arg);
-
- jack_port_id_t port_register(const char *port_name, const char *port_type, unsigned long flags, unsigned long buffer_size);
- int port_unregister(jack_port_id_t port_index);
- void* port_get_buffer(int port, jack_nframes_t nframes);
- int port_set_alias(int port, const char* name);
-
- jack_nframes_t get_sample_rate() const;
- jack_nframes_t frame_time() const;
- jack_nframes_t last_frame_time() const;
- };
-
- } // end of namespace
-
- #endif
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