diff options
Diffstat (limited to 'drivers/alsa/hdsp.c')
| -rw-r--r-- | drivers/alsa/hdsp.c | 117 |
1 files changed, 60 insertions, 57 deletions
diff --git a/drivers/alsa/hdsp.c b/drivers/alsa/hdsp.c index cf28a91..bea357b 100644 --- a/drivers/alsa/hdsp.c +++ b/drivers/alsa/hdsp.c @@ -1,5 +1,5 @@ /* - Copyright (C) 2001 Paul Davis + Copyright (C) 2001 Paul Davis Copyright (C) 2002 Dave LaRose This program is free software; you can redistribute it and/or modify @@ -16,7 +16,7 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ + */ #include "hardware.h" #include "alsa_driver.h" @@ -29,45 +29,48 @@ static const int HDSP_UNITY_GAIN = 32768; static const int HDSP_MAX_GAIN = 65535; /* - * Use these two arrays to choose the value of the input_channel - * argument to hsdp_set_mixer_gain(). hdsp_physical_input_index[n] - * selects the nth optical/analog input. audio_stream_index[n] + * Use these two arrays to choose the value of the input_channel + * argument to hsdp_set_mixer_gain(). hdsp_physical_input_index[n] + * selects the nth optical/analog input. audio_stream_index[n] * selects the nth channel being received from the host via pci/pccard. */ static const int hdsp_num_input_channels = 52; static const int hdsp_physical_input_index[] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, - 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25}; + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,24, 25 +}; static const int hdsp_audio_stream_index[] = { - 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, - 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51}; + 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,50, 51 +}; /* - * Use this array to choose the value of the output_channel + * Use this array to choose the value of the output_channel * argument to hsdp_set_mixer_gain(). hdsp_physical_output_index[26] * and hdsp_physical_output_index[27] refer to the two "line out" * channels (1/4" phone jack on the front of digiface/multiface). */ static const int hdsp_num_output_channels = 28; static const int hdsp_physical_output_index[] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, - 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27}; + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,24, 25, 26, 27 +}; /* Function for checking argument values */ -static int clamp_int(int value, int lower_bound, int upper_bound) +static int clamp_int (int value, int lower_bound, int upper_bound) { - if(value < lower_bound) { - return lower_bound; - } - if(value > upper_bound) { - return upper_bound; - } - return value; + if (value < lower_bound) { + return lower_bound; + } + if (value > upper_bound) { + return upper_bound; + } + return value; } /* Note(XXX): Maybe should share this code with hammerfall.c? */ -static void +static void set_control_id (snd_ctl_elem_id_t *ctl, const char *name) { snd_ctl_elem_id_set_name (ctl, name); @@ -86,18 +89,18 @@ set_control_id (snd_ctl_elem_id_t *ctl, const char *name) /* gain is an int from 0 to 65535, with 0 being -inf gain, and */ /* 65535 being about +2dB. */ -static int hdsp_set_mixer_gain(jack_hardware_t *hw, int input_channel, - int output_channel, int gain) +static int hdsp_set_mixer_gain (jack_hardware_t *hw, int input_channel, + int output_channel, int gain) { - hdsp_t *h = (hdsp_t *) hw->private; + hdsp_t *h = (hdsp_t*)hw->private; snd_ctl_elem_value_t *ctl; snd_ctl_elem_id_t *ctl_id; int err; /* Check args */ - input_channel = clamp_int(input_channel, 0, hdsp_num_input_channels); - output_channel = clamp_int(output_channel, 0, hdsp_num_output_channels); - gain = clamp_int(gain, HDSP_MINUS_INFINITY_GAIN, HDSP_MAX_GAIN); + input_channel = clamp_int (input_channel, 0, hdsp_num_input_channels); + output_channel = clamp_int (output_channel, 0, hdsp_num_output_channels); + gain = clamp_int (gain, HDSP_MINUS_INFINITY_GAIN, HDSP_MAX_GAIN); /* Allocate control element and select "Mixer" control */ snd_ctl_elem_value_alloca (&ctl); @@ -106,15 +109,15 @@ static int hdsp_set_mixer_gain(jack_hardware_t *hw, int input_channel, snd_ctl_elem_value_set_id (ctl, ctl_id); /* Apparently non-standard and unstable interface for the */ - /* mixer control. */ + /* mixer control. */ snd_ctl_elem_value_set_integer (ctl, 0, input_channel); snd_ctl_elem_value_set_integer (ctl, 1, output_channel); snd_ctl_elem_value_set_integer (ctl, 2, gain); /* Commit the mixer value and check for errors */ if ((err = snd_ctl_elem_write (h->driver->ctl_handle, ctl)) != 0) { - jack_error ("ALSA/HDSP: cannot set mixer gain (%s)", snd_strerror (err)); - return -1; + jack_error ("ALSA/HDSP: cannot set mixer gain (%s)", snd_strerror (err)); + return -1; } /* Note (XXX): Perhaps we should maintain a cache of the current */ @@ -122,7 +125,7 @@ static int hdsp_set_mixer_gain(jack_hardware_t *hw, int input_channel, /* hdsp hardware. We'll leave this out until a little later. */ return 0; } - + static int hdsp_set_input_monitor_mask (jack_hardware_t *hw, unsigned long mask) { int i; @@ -130,40 +133,40 @@ static int hdsp_set_input_monitor_mask (jack_hardware_t *hw, unsigned long mask) /* For each input channel */ for (i = 0; i < 26; i++) { /* Monitoring requested for this channel? */ - if(mask & (1<<i)) { + if (mask & (1 << i)) { /* Yes. Connect physical input to output */ - if(hdsp_set_mixer_gain (hw, hdsp_physical_input_index[i], - hdsp_physical_output_index[i], - HDSP_UNITY_GAIN) != 0) { - return -1; + if (hdsp_set_mixer_gain (hw, hdsp_physical_input_index[i], + hdsp_physical_output_index[i], + HDSP_UNITY_GAIN) != 0) { + return -1; } #ifdef CANNOT_HEAR_SOFTWARE_STREAM_WHEN_MONITORING /* ...and disconnect the corresponding software */ /* channel */ - if(hdsp_set_mixer_gain (hw, hdsp_audio_stream_index[i], - hdsp_physical_output_index[i], - HDSP_MINUS_INFINITY_GAIN) != 0) { - return -1; + if (hdsp_set_mixer_gain (hw, hdsp_audio_stream_index[i], + hdsp_physical_output_index[i], + HDSP_MINUS_INFINITY_GAIN) != 0) { + return -1; } #endif } else { /* No. Disconnect physical input from output */ - if(hdsp_set_mixer_gain (hw, hdsp_physical_input_index[i], - hdsp_physical_output_index[i], - HDSP_MINUS_INFINITY_GAIN) != 0) { - return -1; + if (hdsp_set_mixer_gain (hw, hdsp_physical_input_index[i], + hdsp_physical_output_index[i], + HDSP_MINUS_INFINITY_GAIN) != 0) { + return -1; } #ifdef CANNOT_HEAR_SOFTWARE_STREAM_WHEN_MONITORING /* ...and connect the corresponding software */ /* channel */ - if(hdsp_set_mixer_gain (hw, hdsp_audio_stream_index[i], - hdsp_physical_output_index[i], - HDSP_UNITY_GAIN) != 0) { - return -1; + if (hdsp_set_mixer_gain (hw, hdsp_audio_stream_index[i], + hdsp_physical_output_index[i], + HDSP_UNITY_GAIN) != 0) { + return -1; } #endif } @@ -174,11 +177,11 @@ static int hdsp_set_input_monitor_mask (jack_hardware_t *hw, unsigned long mask) } -static int hdsp_change_sample_clock (jack_hardware_t *hw, SampleClockMode mode) +static int hdsp_change_sample_clock (jack_hardware_t *hw, SampleClockMode mode) { - // Empty for now, until Dave understands more about clock sync so - // he can test. - return -1; + // Empty for now, until Dave understands more about clock sync so + // he can test. + return -1; } static double hdsp_get_hardware_peak (jack_port_t *port, jack_nframes_t frame) @@ -194,10 +197,10 @@ static double hdsp_get_hardware_power (jack_port_t *port, jack_nframes_t frame) static void hdsp_release (jack_hardware_t *hw) { - hdsp_t *h = (hdsp_t *) hw->private; + hdsp_t *h = (hdsp_t*)hw->private; if (h != 0) { - free (h); + free (h); } } @@ -209,7 +212,7 @@ jack_alsa_hdsp_hw_new (alsa_driver_t *driver) jack_hardware_t *hw; hdsp_t *h; - hw = (jack_hardware_t *) malloc (sizeof (jack_hardware_t)); + hw = (jack_hardware_t*)malloc (sizeof(jack_hardware_t)); /* Not using clock lock-sync-whatever in home hardware setup */ /* yet. Will write this code when can test it. */ @@ -223,8 +226,8 @@ jack_alsa_hdsp_hw_new (alsa_driver_t *driver) hw->release = hdsp_release; hw->get_hardware_peak = hdsp_get_hardware_peak; hw->get_hardware_power = hdsp_get_hardware_power; - - h = (hdsp_t *) malloc (sizeof (hdsp_t)); + + h = (hdsp_t*)malloc (sizeof(hdsp_t)); h->driver = driver; hw->private = h; |