Jack2 1.9.6
|
00001 /* 00002 Copyright (C) 2001 Paul Davis 00003 Copyright (C) 2004 Grame 00004 00005 This program is free software; you can redistribute it and/or modify 00006 it under the terms of the GNU General Public License as published by 00007 the Free Software Foundation; either version 2 of the License, or 00008 (at your option) any later version. 00009 00010 This program is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 GNU General Public License for more details. 00014 00015 You should have received a copy of the GNU General Public License 00016 along with this program; if not, write to the Free Software 00017 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 00019 */ 00020 00021 #ifndef __JackAlsaDriver__ 00022 #define __JackAlsaDriver__ 00023 00024 #include "JackAudioDriver.h" 00025 #include "JackThreadedDriver.h" 00026 #include "JackTime.h" 00027 00028 #include "alsa_driver.h" 00029 00030 namespace Jack 00031 { 00032 00037 class JackAlsaDriver : public JackAudioDriver 00038 { 00039 00040 private: 00041 00042 jack_driver_t* fDriver; 00043 int fReservedCaptureDevice; 00044 int fReservedPlaybackDevice; 00045 00046 void alsa_driver_release_channel_dependent_memory(alsa_driver_t *driver); 00047 int alsa_driver_check_capabilities(alsa_driver_t *driver); 00048 int alsa_driver_check_card_type(alsa_driver_t *driver); 00049 int alsa_driver_hammerfall_hardware(alsa_driver_t *driver); 00050 int alsa_driver_hdsp_hardware(alsa_driver_t *driver); 00051 int alsa_driver_ice1712_hardware(alsa_driver_t *driver); 00052 int alsa_driver_usx2y_hardware(alsa_driver_t *driver); 00053 int alsa_driver_generic_hardware(alsa_driver_t *driver); 00054 int alsa_driver_hw_specific(alsa_driver_t *driver, int hw_monitoring, 00055 int hw_metering); 00056 int alsa_driver_setup_io_function_pointers (alsa_driver_t *driver); 00057 int alsa_driver_configure_stream(alsa_driver_t *driver, char *device_name, 00058 const char *stream_name, 00059 snd_pcm_t *handle, 00060 snd_pcm_hw_params_t *hw_params, 00061 snd_pcm_sw_params_t *sw_params, 00062 unsigned int *nperiodsp, 00063 unsigned long *nchns, 00064 unsigned long sample_width); 00065 00066 int alsa_driver_set_parameters(alsa_driver_t *driver, 00067 jack_nframes_t frames_per_cycle, 00068 jack_nframes_t user_nperiods, 00069 jack_nframes_t rate); 00070 00071 int alsa_driver_reset_parameters(alsa_driver_t *driver, 00072 jack_nframes_t frames_per_cycle, 00073 jack_nframes_t user_nperiods, 00074 jack_nframes_t rate); 00075 00076 int alsa_driver_get_channel_addresses(alsa_driver_t *driver, 00077 snd_pcm_uframes_t *capture_avail, 00078 snd_pcm_uframes_t *playback_avail, 00079 snd_pcm_uframes_t *capture_offset, 00080 snd_pcm_uframes_t *playback_offset); 00081 00082 jack_driver_t * alsa_driver_new(const char *name, char *playback_alsa_device, 00083 char *capture_alsa_device, 00084 jack_client_t *client, 00085 jack_nframes_t frames_per_cycle, 00086 jack_nframes_t user_nperiods, 00087 jack_nframes_t rate, 00088 int hw_monitoring, 00089 int hw_metering, 00090 int capturing, 00091 int playing, 00092 DitherAlgorithm dither, 00093 int soft_mode, 00094 int monitor, 00095 int user_capture_nchnls, 00096 int user_playback_nchnls, 00097 int shorts_first, 00098 jack_nframes_t capture_latency, 00099 jack_nframes_t playback_latency, 00100 alsa_midi_t *midi); 00101 00102 void alsa_driver_delete(alsa_driver_t *driver); 00103 int alsa_driver_start(alsa_driver_t *driver); 00104 int alsa_driver_stop(alsa_driver_t *driver); 00105 int alsa_driver_read(alsa_driver_t *driver, jack_nframes_t nframes); 00106 int alsa_driver_write(alsa_driver_t *driver, jack_nframes_t nframes); 00107 00108 jack_nframes_t alsa_driver_wait(alsa_driver_t *driver, int extra_fd, int *status, float 00109 *delayed_usecs); 00110 00111 void alsa_driver_silence_untouched_channels(alsa_driver_t *driver, 00112 jack_nframes_t nframes); 00113 00114 int alsa_driver_restart(alsa_driver_t *driver); 00115 int alsa_driver_xrun_recovery(alsa_driver_t *driver, float *delayed_usecs); 00116 void jack_driver_init(jack_driver_t *driver); 00117 void jack_driver_nt_init(jack_driver_nt_t * driver); 00118 00119 public: 00120 00121 JackAlsaDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table) 00122 : JackAudioDriver(name, alias, engine, table) 00123 ,fDriver(NULL) 00124 ,fReservedCaptureDevice(-1) 00125 ,fReservedPlaybackDevice(-1) 00126 {} 00127 virtual ~JackAlsaDriver() 00128 {} 00129 00130 int Open(jack_nframes_t buffer_size, 00131 jack_nframes_t user_nperiods, 00132 jack_nframes_t samplerate, 00133 bool hw_monitoring, 00134 bool hw_metering, 00135 bool capturing, 00136 bool playing, 00137 DitherAlgorithm dither, 00138 bool soft_mode, 00139 bool monitor, 00140 int inchannels, 00141 int outchannels, 00142 bool shorts_first, 00143 const char* capture_driver_name, 00144 const char* playback_driver_name, 00145 jack_nframes_t capture_latency, 00146 jack_nframes_t playback_latency, 00147 const char* midi_driver_name); 00148 00149 int Close(); 00150 int Attach(); 00151 int Detach(); 00152 00153 int Start(); 00154 int Stop(); 00155 00156 int Read(); 00157 int Write(); 00158 00159 // BufferSize can be changed 00160 bool IsFixedBufferSize() 00161 { 00162 return false; 00163 } 00164 00165 int SetBufferSize(jack_nframes_t buffer_size); 00166 00167 // jack api emulation for the midi driver 00168 int is_realtime() const; 00169 int create_thread(pthread_t *thread, int prio, int rt, void *(*start_func)(void*), void *arg); 00170 00171 jack_port_id_t port_register(const char *port_name, const char *port_type, unsigned long flags, unsigned long buffer_size); 00172 int port_unregister(jack_port_id_t port_index); 00173 void* port_get_buffer(int port, jack_nframes_t nframes); 00174 int port_set_alias(int port, const char* name); 00175 00176 jack_nframes_t get_sample_rate() const; 00177 jack_nframes_t frame_time() const; 00178 jack_nframes_t last_frame_time() const; 00179 }; 00180 00181 } // end of namespace 00182 00183 #endif