void audio_set_default_levels() { int err; snd_ctl_t *ctl; snd_ctl_elem_value_t *val; snd_ctl_elem_value_alloca(&val); if (snd_ctl_open(&ctl, ALSA_DEVICE, 0)) { fprintf(stderr, "can't open audio device"); return; } /* unmute microphone */ snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, "Mic Capture Switch"); snd_ctl_elem_value_set_integer(val, 0, 1); err = snd_ctl_elem_write(ctl, val); if (err) fprintf(stderr, "can't unmute microphone: %s\n", snd_strerror(err)); /* unmute speaker */ snd_ctl_elem_value_clear(val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, "Speaker Playback Switch"); snd_ctl_elem_value_set_integer(val, 0, 1); err = snd_ctl_elem_write(ctl, val); if (err) fprintf(stderr, "can't unmute speaker: %s\n", snd_strerror(err)); /* set mic volume */ snd_ctl_elem_value_clear(val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, "Mic Capture Volume"); snd_ctl_elem_value_set_integer(val, 0, DEFAULT_MIC_VOL); err = snd_ctl_elem_write(ctl, val); if (err) fprintf(stderr, "can't set microphone volume: %s\n", snd_strerror(err)); /* set speaker volume */ snd_ctl_elem_value_clear(val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, "Speaker Playback Volume"); snd_ctl_elem_value_set_integer(val, 0, DEFAULT_SPKR_VOL); snd_ctl_elem_value_set_integer(val, 1, DEFAULT_SPKR_VOL); err = snd_ctl_elem_write(ctl, val); if (err) fprintf(stderr, "can't set speaker volume: %s\n", snd_strerror(err)); /* set capture source */ snd_ctl_elem_value_clear(val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, "PCM Capture Source"); snd_ctl_elem_value_set_integer(val, 0, 0); err = snd_ctl_elem_write(ctl, val); if (err) fprintf(stderr, "can't set capture source: %s\n", snd_strerror(err)); snd_ctl_close(ctl); }
static int hammerfall_set_input_monitor_mask (jack_hardware_t *hw, unsigned long mask) { hammerfall_t *h = (hammerfall_t *) hw->private_hw; snd_ctl_elem_value_t *ctl; snd_ctl_elem_id_t *ctl_id; int err; int i; snd_ctl_elem_value_alloca (&ctl); snd_ctl_elem_id_alloca (&ctl_id); set_control_id (ctl_id, "Channels Thru"); snd_ctl_elem_value_set_id (ctl, ctl_id); for (i = 0; i < 26; i++) { snd_ctl_elem_value_set_integer (ctl, i, (mask & (1<<i)) ? 1 : 0); } if ((err = snd_ctl_elem_write (h->driver->ctl_handle, ctl)) != 0) { jack_error ("ALSA/Hammerfall: cannot set input monitoring (%s)", snd_strerror (err)); return -1; } hw->input_monitor_mask = mask; return 0; }
static int hammerfall_change_sample_clock (jack_hardware_t *hw, SampleClockMode mode) { hammerfall_t *h = (hammerfall_t *) hw->private_hw; snd_ctl_elem_value_t *ctl; snd_ctl_elem_id_t *ctl_id; int err; snd_ctl_elem_value_alloca (&ctl); snd_ctl_elem_id_alloca (&ctl_id); set_control_id (ctl_id, "Sync Mode"); snd_ctl_elem_value_set_id (ctl, ctl_id); switch (mode) { case AutoSync: snd_ctl_elem_value_set_enumerated (ctl, 0, 0); break; case ClockMaster: snd_ctl_elem_value_set_enumerated (ctl, 0, 1); break; case WordClock: snd_ctl_elem_value_set_enumerated (ctl, 0, 2); break; } if ((err = snd_ctl_elem_write (h->driver->ctl_handle, ctl)) < 0) { jack_error ("ALSA-Hammerfall: cannot set clock mode"); } return 0; }
static void set_routes(int stream, int idx) { int err; unsigned int out; snd_ctl_elem_value_t *val; stream--; if (stream < 0 || stream > 9) { g_print("set_routes (1)\n"); return; } if (! stream_active[stream]) return; out = 0; if (idx == 1) out = MAX_INPUT_CHANNELS + MAX_SPDIF_CHANNELS + 1; else if (idx == 2 || idx == 3) /* S/PDIF left & right */ out = idx + 7; /* 9-10 */ else if (idx >= 4) /* analog */ out = idx - 3; /* 1-8 */ snd_ctl_elem_value_alloca(&val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); if (stream >= MAX_OUTPUT_CHANNELS) { snd_ctl_elem_value_set_name(val, SPDIF_PLAYBACK_ROUTE_NAME); snd_ctl_elem_value_set_index(val, stream - MAX_OUTPUT_CHANNELS); } else { snd_ctl_elem_value_set_name(val, ANALOG_PLAYBACK_ROUTE_NAME); snd_ctl_elem_value_set_index(val, stream); } snd_ctl_elem_value_set_enumerated(val, 0, out); if ((err = snd_ctl_elem_write(ctl, val)) < 0) g_print("Multi track route write error: %s\n", snd_strerror(err)); }
/** * \brief Set value for an HCTL element * \param elem HCTL element * \param value HCTL element value * \retval 0 on success * \retval >1 on success when value was changed * \retval <0 a negative error code on failure */ int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value) { assert(elem); assert(elem->hctl); assert(value); value->id = elem->id; return snd_ctl_elem_write(elem->hctl->ctl, value); }
void adc_sense_toggled(GtkWidget *togglebutton, gpointer data) { int idx = (long)data >> 8; int state = (long)data & 0xff; snd_ctl_elem_value_t *val; int err; snd_ctl_elem_value_alloca(&val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, ADC_SENSE_NAME); snd_ctl_elem_value_set_index(val, idx); snd_ctl_elem_value_set_enumerated(val, 0, state); if ((err = snd_ctl_elem_write(ctl, val)) < 0) g_print("Unable to write adc sense: %s\n", snd_strerror(err)); }
static int execute_cset(snd_ctl_t *ctl, const char *cset) { const char *pos; int err; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *value; snd_ctl_elem_info_t *info; snd_ctl_elem_id_malloc(&id); snd_ctl_elem_value_malloc(&value); snd_ctl_elem_info_malloc(&info); err = __snd_ctl_ascii_elem_id_parse(id, cset, &pos); if (err < 0) goto __fail; while (*pos && isspace(*pos)) pos++; if (!*pos) { uc_error("undefined value for cset >%s<", cset); err = -EINVAL; goto __fail; } snd_ctl_elem_value_set_id(value, id); snd_ctl_elem_info_set_id(info, id); err = snd_ctl_elem_read(ctl, value); if (err < 0) goto __fail; err = snd_ctl_elem_info(ctl, info); if (err < 0) goto __fail; err = snd_ctl_ascii_value_parse(ctl, value, info, pos); if (err < 0) goto __fail; err = snd_ctl_elem_write(ctl, value); if (err < 0) goto __fail; err = 0; __fail: if (id != NULL) free(id); if (value != NULL) free(value); if (info != NULL) free(info); return err; }
void ipga_volume_adjust(GtkAdjustment *adj, gpointer data) { int idx = (int)(long)data; snd_ctl_elem_value_t *val; int err, ival = -(int)adj->value; char text[16]; snd_ctl_elem_value_alloca(&val); snd_ctl_elem_value_set_interface(val, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(val, IPGA_VOLUME_NAME); snd_ctl_elem_value_set_index(val, idx); snd_ctl_elem_value_set_integer(val, 0, ival); sprintf(text, "%03i", ival); gtk_label_set_text(av_ipga_volume_label[idx], text); if ((err = snd_ctl_elem_write(ctl, val)) < 0) g_print("Unable to write ipga volume: %s\n", snd_strerror(err)); }
int configure_T2_DAC2_AnalogR_Playback_Volume(snd_ctl_t *ctl,char on_off_status) { snd_ctl_elem_value_t *value; snd_ctl_elem_value_alloca(&value); snd_ctl_elem_value_set_interface(value, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(value, control_elements_of_interest[6]); if (on_off_status) { g_t2_default_dac2_analogr = snd_ctl_elem_value_get_enumerated(value,0); snd_ctl_elem_value_set_enumerated(value,0, on_off_status); } else { snd_ctl_elem_value_set_enumerated(value,0, g_t2_default_dac2_analogr); } return(snd_ctl_elem_write(ctl, value)); }
int set_gain(int idx, int src, int dst, int val) { int err; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *ctl; snd_ctl_t *handle; if(idx >= HDSPMM_MAX_CARDS || idx < 0) return HDSPMM_ERROR_WRONG_IDX; snd_ctl_elem_value_alloca(&ctl); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_id_set_name(id, "Mixer"); snd_ctl_elem_id_set_numid(id, 0); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP); snd_ctl_elem_id_set_device(id, 0); snd_ctl_elem_id_set_subdevice(id, 0); snd_ctl_elem_id_set_index(id, 0); snd_ctl_elem_value_set_id(ctl, id); if ((err = snd_ctl_open(&handle, card_name[idx], SND_CTL_NONBLOCK)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_OPEN; } snd_ctl_elem_value_set_integer(ctl, 0, src); snd_ctl_elem_value_set_integer(ctl, 1, dst); snd_ctl_elem_value_set_integer(ctl, 2, val); if ((err = snd_ctl_elem_write(handle, ctl)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_WRITE; } val = snd_ctl_elem_value_get_integer(ctl, 2); snd_ctl_close(handle); return val; }
static int check_elems(struct elem_set_trial *trial) { snd_ctl_elem_value_t *data; unsigned int numid; unsigned int index; unsigned int i; int err; snd_ctl_elem_value_alloca(&data); snd_ctl_elem_value_set_id(data, trial->id); numid = snd_ctl_elem_id_get_numid(trial->id); index = snd_ctl_elem_id_get_index(trial->id); for (i = 0; i < trial->element_count; ++i) { snd_ctl_elem_value_set_index(data, index + i); /* * In Linux 4.0 or former, ioctl(SNDRV_CTL_IOCTL_ELEM_ADD) * doesn't fill all of fields for identification. */ if (numid > 0) snd_ctl_elem_value_set_numid(data, numid + i); err = snd_ctl_elem_read(trial->handle, data); if (err < 0) return err; /* Change members of an element in this element set. */ trial->change_elem_members(trial, data); err = snd_ctl_elem_write(trial->handle, data); if (err < 0) return err; } return 0; }
bool LegacyAmixerControl::accessHW(bool receive, string &error) { CAutoLog autoLog(getConfigurableElement(), "ALSA", isDebugEnabled()); #ifdef SIMULATION if (receive) { memset(getBlackboardLocation(), 0, getSize()); } log_info("%s ALSA Element Instance: %s\t\t(Control Element: %s)", receive ? "Reading" : "Writing", getConfigurableElement()->getPath().c_str(), getControlName().c_str()); return true; #endif int ret; // Mixer handle snd_ctl_t *sndCtrl; uint32_t value; uint32_t index; uint32_t elementCount; snd_ctl_elem_id_t *id; snd_ctl_elem_info_t *info; snd_ctl_elem_value_t *control; logControlInfo(receive); // Check parameter type is ok (deferred error, no exceptions available :-() if (!isTypeSupported()) { error = "Parameter type not supported."; return false; } int cardNumber = getCardNumber(); if (cardNumber < 0) { error = "Card " + getCardName() + " not found. Error: " + strerror(cardNumber); return false; } #ifdef ANDROID if ((ret = snd_ctl_hw_open(&sndCtrl, NULL, cardNumber, 0)) < 0) { error = snd_strerror(ret); return false; } #else // Create device name ostringstream deviceName; deviceName << "hw:" << cardNumber; // Open sound control if ((ret = snd_ctl_open(&sndCtrl, deviceName.str().c_str(), 0)) < 0) { error = snd_strerror(ret); return false; } #endif // Allocate in stack snd_ctl_elem_id_alloca(&id); snd_ctl_elem_info_alloca(&info); snd_ctl_elem_value_alloca(&control); // Set interface snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); string controlName = getControlName(); // Set name or id if (isdigit(controlName[0])) { snd_ctl_elem_id_set_numid(id, asInteger(controlName)); } else { snd_ctl_elem_id_set_name(id, controlName.c_str()); } // Init info id snd_ctl_elem_info_set_id(info, id); // Get info if ((ret = snd_ctl_elem_info(sndCtrl, info)) < 0) { error = "ALSA: Unable to get element info " + controlName + ": " + snd_strerror(ret); // Close sound control snd_ctl_close(sndCtrl); return false; } // Get type snd_ctl_elem_type_t eType = snd_ctl_elem_info_get_type(info); // Get element count elementCount = snd_ctl_elem_info_get_count(info); uint32_t scalarSize = getScalarSize(); // If size defined in the PFW different from alsa mixer control size, return an error if (elementCount * scalarSize != getSize()) { error = "ALSA: Control element count (" + asString(elementCount) + ") and configurable scalar element count (" + asString(getSize() / scalarSize) + ") mismatch"; // Close sound control snd_ctl_close(sndCtrl); return false; } // Set value id snd_ctl_elem_value_set_id(control, id); if (receive) { // Read element if ((ret = snd_ctl_elem_read(sndCtrl, control)) < 0) { error = "ALSA: Unable to read element " + controlName + ": " + snd_strerror(ret); // Close sound control snd_ctl_close(sndCtrl); return false; } // Go through all indexes for (index = 0; index < elementCount; index++) { switch (eType) { case SND_CTL_ELEM_TYPE_BOOLEAN: value = snd_ctl_elem_value_get_boolean(control, index); break; case SND_CTL_ELEM_TYPE_INTEGER: value = snd_ctl_elem_value_get_integer(control, index); break; case SND_CTL_ELEM_TYPE_INTEGER64: value = snd_ctl_elem_value_get_integer64(control, index); break; case SND_CTL_ELEM_TYPE_ENUMERATED: value = snd_ctl_elem_value_get_enumerated(control, index); break; case SND_CTL_ELEM_TYPE_BYTES: value = snd_ctl_elem_value_get_byte(control, index); break; default: error = "ALSA: Unknown control element type while reading alsa element " + controlName; return false; } if (isDebugEnabled()) { log_info("Reading alsa element %s, index %u with value %u", controlName.c_str(), index, value); } // Write data to blackboard (beware this code is OK on Little Endian machines only) toBlackboard(value); } } else { // Go through all indexes for (index = 0; index < elementCount; index++) { // Read data from blackboard (beware this code is OK on Little Endian machines only) value = fromBlackboard(); if (isDebugEnabled()) { log_info("Writing alsa element %s, index %u with value %u", controlName.c_str(), index, value); } switch (eType) { case SND_CTL_ELEM_TYPE_BOOLEAN: snd_ctl_elem_value_set_boolean(control, index, value); break; case SND_CTL_ELEM_TYPE_INTEGER: snd_ctl_elem_value_set_integer(control, index, value); break; case SND_CTL_ELEM_TYPE_INTEGER64: snd_ctl_elem_value_set_integer64(control, index, value); break; case SND_CTL_ELEM_TYPE_ENUMERATED: snd_ctl_elem_value_set_enumerated(control, index, value); break; case SND_CTL_ELEM_TYPE_BYTES: snd_ctl_elem_value_set_byte(control, index, value); break; default: error = "ALSA: Unknown control element type while writing alsa element " + controlName; return false; } } // Write element if ((ret = snd_ctl_elem_write(sndCtrl, control)) < 0) { error = "ALSA: Unable to write element " + controlName + ": " + snd_strerror(ret); // Close sound control snd_ctl_close(sndCtrl); return false; } } // Close sound control snd_ctl_close(sndCtrl); return true; }
static int cset(int argc, char *argv[], int roflag, int keep_handle) { int err; static snd_ctl_t *handle = NULL; snd_ctl_elem_info_t *info; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *control; char *ptr; unsigned int idx, count; long tmp; snd_ctl_elem_type_t type; snd_ctl_elem_info_alloca(&info); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_value_alloca(&control); if (argc < 1) return -EINVAL; if (parse_control_id(argv[0], id)) return -EINVAL; if (handle == NULL && (err = snd_ctl_open(&handle, card, 0)) < 0) return err; snd_ctl_elem_info_set_id(info, id); if ((err = snd_ctl_elem_info(handle, info)) < 0) { if (!keep_handle) { snd_ctl_close(handle); handle = NULL; } return err; } snd_ctl_elem_info_get_id(info, id); type = snd_ctl_elem_info_get_type(info); count = snd_ctl_elem_info_get_count(info); snd_ctl_elem_value_set_id(control, id); if (!roflag) { ptr = argv[1]; for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++) { switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: tmp = 0; if (!strncasecmp(ptr, "on", 2) || !strncasecmp(ptr, "up", 2)) { tmp = 1; ptr += 2; } else if (!strncasecmp(ptr, "yes", 3)) { tmp = 1; ptr += 3; } else if (!strncasecmp(ptr, "toggle", 6)) { tmp = snd_ctl_elem_value_get_boolean(control, idx); tmp = tmp > 0 ? 0 : 1; ptr += 6; } else if (isdigit(*ptr)) { tmp = atoi(ptr) > 0 ? 1 : 0; while (isdigit(*ptr)) ptr++; } else { while (*ptr && *ptr != ',') ptr++; } snd_ctl_elem_value_set_boolean(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = get_integer(&ptr, snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_INTEGER64: tmp = get_integer64(&ptr, snd_ctl_elem_info_get_min64(info), snd_ctl_elem_info_get_max64(info)); snd_ctl_elem_value_set_integer64(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = get_ctl_enum_item_index(handle, info, &ptr); if (tmp < 0) tmp = get_integer(&ptr, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_BYTES: tmp = get_integer(&ptr, 0, 255); snd_ctl_elem_value_set_byte(control, idx, tmp); break; default: break; } if (!strchr(argv[1], ',')) ptr = argv[1]; else if (*ptr == ',') ptr++; } if ((err = snd_ctl_elem_write(handle, control)) < 0) { if (!keep_handle) { snd_ctl_close(handle); handle = NULL; } return err; } } if (! keep_handle) { snd_ctl_close(handle); handle = NULL; } if (!quiet) { snd_hctl_t *hctl; snd_hctl_elem_t *elem; if ((err = snd_hctl_open(&hctl, card, 0)) < 0) return err; if ((err = snd_hctl_load(hctl)) < 0) return err; elem = snd_hctl_find_elem(hctl, id); if (elem) show_control(" ", elem, LEVEL_BASIC | LEVEL_ID); snd_hctl_close(hctl); } return 0; }
void main( int argc, char *argv[] ) { struct structArgs cmdArgs; int errNum; // ************************************************************************ // ALSA control elements. // ************************************************************************ snd_ctl_t *ctl; // Simple control handle. snd_ctl_elem_id_t *id; // Simple control element id. snd_ctl_elem_value_t *control; // Simple control element value. snd_ctl_elem_type_t type; // Simple control element type. snd_ctl_elem_info_t *info; // Simple control info container. // ************************************************************************ // Get command line parameters. // ************************************************************************ argp_parse( &argp, argc, argv, 0, 0, &cmdArgs ); printf( "Card = %i\n", cmdArgs.card ); printf( "Control = %i\n", cmdArgs.control ); printf( "Value 1 = %i\n", cmdArgs.value1 ); printf( "Value 2 = %i\n", cmdArgs.value2 ); // ************************************************************************ // Set up ALSA control. // ************************************************************************ sprintf( cmdArgs.deviceID, "hw:%i", cmdArgs.card ); printf( "Device ID = %s.\n", cmdArgs.deviceID ); if ( snd_ctl_open( &ctl, cmdArgs.deviceID, 1 ) < 0 ) { printf( "Error opening control.\n" ); return; } // Initialise a simple control element id structure. snd_ctl_elem_id_alloca( &id ); snd_ctl_elem_id_set_numid( id, cmdArgs.control ); // Initialise info element. snd_ctl_elem_info_alloca( &info ); snd_ctl_elem_info_set_numid( info, cmdArgs.control ); // Is the control valid? if ( snd_ctl_elem_info( ctl, info ) < 0 ) { printf( "Error getting control element info.\n" ); return; } // Find type of control. // either: // SND_CTL_ELEM_TYPE_INTEGER, // SND_CTL_ELEM_TYPE_INTEGER64, // SND_CTL_ELEM_TYPE_ENUMERATED, etc. // Only interested in INTEGER. type = snd_ctl_elem_info_get_type( info ); if ( type != SND_CTL_ELEM_TYPE_INTEGER ) { printf( "Control type is not integer.\n" ); printf( "Type = %s\n", type ); return; } // ************************************************************************ // Get some information for selected control. // ************************************************************************ printf( "Min value for control = %d\n", snd_ctl_elem_info_get_min( info )); printf( "Max value for control = %d\n", snd_ctl_elem_info_get_max( info )); printf( "Step value for control = %d\n", snd_ctl_elem_info_get_step( info )); // Initialise the control element value container. snd_ctl_elem_value_alloca( &control ); snd_ctl_elem_value_set_id( control, id ); // ************************************************************************ // Set values for selected control. // ************************************************************************ snd_ctl_elem_value_set_integer( control, 0, cmdArgs.value1 ); if ( snd_ctl_elem_write( ctl, control ) < 0 ) printf( "Error setting L volume" ); else printf( "Set L volume to %d.\n", cmdArgs.value1 ); snd_ctl_elem_value_set_integer( control, 1, cmdArgs.value2 ); if ( snd_ctl_elem_write( ctl, control ) < 0 ) printf( "Error setting R volume" ); else printf( "Set R volume to %d.\n", cmdArgs.value2 ); // ************************************************************************ // Clean up. // ************************************************************************ snd_ctl_close( ctl ); return; }
static int check_audio_route() { int err, idx, i; snd_ctl_t *handle; const char *route_ctrl_name = "Speaker Function"; snd_ctl_elem_value_t * elem_value; snd_ctl_elem_info_t *info; snd_ctl_elem_list_t elist; snd_ctl_elem_id_t *eid; snd_ctl_elem_value_alloca(&elem_value); snd_ctl_elem_info_alloca(&info); //snd_ctl_elem_value_set_numid(elem_value, 54); if ((err = snd_ctl_open(&handle, "hw:0", 0)) < 0) { db_msg("Open control error: %s\n", snd_strerror(err)); goto check_audio_route_err; } db_msg("card=%d\n", handle->card); memset(&elist, 0, sizeof(elist)); if (snd_ctl_elem_list(handle, &elist) < 0) { db_msg("snd_ctl_elem_list 1 failed\n"); goto check_audio_route_err; } eid = calloc(elist.count, sizeof(snd_ctl_elem_id_t)); elist.space = elist.count; elist.pids = eid; if (snd_ctl_elem_list(handle, &elist) < 0) { db_msg("snd_ctl_elem_list 2 failed\n"); goto check_audio_route_err; } for (i = 0; i < elist.count; ++i) { info->id.numid = eid[i].numid; if ((err = snd_ctl_elem_info(handle, info)) < 0) { db_msg("Cannot find the given element from control\n"); goto check_audio_route_err; } //db_msg("name[%d]=%s\n", i, snd_ctl_elem_info_get_name(info)); if (!strcmp(snd_ctl_elem_info_get_name(info), route_ctrl_name)) { db_msg("route ctrl found!!!\n"); break; } } snd_ctl_elem_value_set_numid(elem_value, info->id.numid); if ((err = snd_ctl_elem_read(handle,elem_value)) < 0) { db_msg("snd_ctl_elem_read error: %s\n", snd_strerror(err)); goto check_audio_route_err; } db_msg("numid=%d\n", snd_ctl_elem_value_get_numid(elem_value)); db_msg("name=%s\n", snd_ctl_elem_value_get_name(elem_value)); //to set the new value snd_ctl_elem_value_set_enumerated(elem_value,0, 1); if ((err = snd_ctl_elem_write(handle,elem_value)) < 0) { db_msg("snd_ctl_elem_write error: %s\n", snd_strerror(err)); goto check_audio_route_err; } //read it out again to check if we did set the registers. if ((err = snd_ctl_elem_read(handle,elem_value)) < 0) { db_msg("snd_ctl_elem_read error: %s\n", snd_strerror(err)); goto check_audio_route_err; } db_msg("after: %d\n", snd_ctl_elem_value_get_enumerated(elem_value, 0)); snd_ctl_close(handle); return 0; check_audio_route_err: snd_ctl_close(handle); return -1; }
int hw_audio_set(const char *name, int value) { static snd_ctl_t *handle = NULL; int err; snd_ctl_elem_id_t *id; snd_ctl_elem_info_t *info; snd_ctl_elem_value_t *control; snd_ctl_elem_id_alloca(&id); snd_ctl_elem_info_alloca(&info); snd_ctl_elem_value_alloca(&control); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_id_set_name(id, name); snd_ctl_elem_info_set_id(info, id); if (handle == NULL && (err = snd_ctl_open(&handle, "default", 0)) < 0) { LOGE("Control default open error: %s\n", snd_strerror(err)); return 0; } int ret = snd_ctl_elem_info(handle, info); if (ret < 0) { LOGE("Cannot find the given element from control default ret=%d %s ", ret, snd_strerror(ret)); return 0; } snd_ctl_elem_type_t type = snd_ctl_elem_info_get_type(info); snd_ctl_elem_info_get_id(info, id); snd_ctl_elem_value_set_id(control, id); switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: snd_ctl_elem_value_set_boolean(control, 0, value); break; case SND_CTL_ELEM_TYPE_INTEGER: snd_ctl_elem_value_set_integer(control, 0, value); break; case SND_CTL_ELEM_TYPE_INTEGER64: snd_ctl_elem_value_set_integer64(control, 0, value); break; case SND_CTL_ELEM_TYPE_ENUMERATED: snd_ctl_elem_value_set_enumerated(control, 0, value); break; case SND_CTL_ELEM_TYPE_BYTES: snd_ctl_elem_value_set_byte(control, 0, value); break; default: break; } ret = snd_ctl_elem_write(handle, control); if(ret <0) { LOGE("Control default load error: %s\n", snd_strerror(ret)); } return 1; }
void V4LRadioControl::callAmixer(const QString& target, const QString& value) { int err; long tmp; unsigned int count; static snd_ctl_t *handle = NULL; QString card("hw:0"); snd_ctl_elem_info_t *info; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *control; snd_ctl_elem_type_t type; snd_ctl_elem_info_alloca(&info); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_value_alloca(&control); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); /* MIXER */ // in amixer parse func // char target[64]; // e.g. PGA CAPTure Switch snd_ctl_elem_id_set_name(id, target.toAscii()); if (handle == NULL && (err = snd_ctl_open(&handle, card.toAscii(), 0)) < 0) { return; } snd_ctl_elem_info_set_id(info, id); if ((err = snd_ctl_elem_info(handle, info)) < 0) { snd_ctl_close(handle); handle = NULL; return; } snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */ type = snd_ctl_elem_info_get_type(info); count = snd_ctl_elem_info_get_count(info); snd_ctl_elem_value_set_id(control, id); tmp = 0; for (uint idx = 0; idx < count && idx < 128; idx++) { switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: #ifdef MULTIMEDIA_MAEMO_DEBUG qDebug() << "SND_CTL_ELEM_TYPE_BOOLEAN" << SND_CTL_ELEM_TYPE_BOOLEAN; #endif if ((value == "on") ||(value == "1")) { tmp = 1; } snd_ctl_elem_value_set_boolean(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = getEnumItemIndex(handle, info, value); snd_ctl_elem_value_set_enumerated(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_INTEGER: #ifdef MULTIMEDIA_MAEMO_DEBUG qDebug() << "SND_CTL_ELEM_TYPE_INTEGER" << SND_CTL_ELEM_TYPE_INTEGER; #endif tmp = atoi(value.toAscii()); if (tmp < snd_ctl_elem_info_get_min(info)) tmp = snd_ctl_elem_info_get_min(info); else if (tmp > snd_ctl_elem_info_get_max(info)) tmp = snd_ctl_elem_info_get_max(info); snd_ctl_elem_value_set_integer(control, idx, tmp); break; default: break; } } if ((err = snd_ctl_elem_write(handle, control)) < 0) { snd_ctl_close(handle); handle = NULL; return; } snd_ctl_close(handle); handle = NULL; }
static int amixer_control(t_amixer *x, int argc, t_atom *argv, int roflag) { int err; snd_ctl_t *handle; snd_ctl_elem_info_t *info; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *control; char *ptr; unsigned int idx, count; long tmp; snd_ctl_elem_type_t type; snd_ctl_elem_info_alloca(&info); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_value_alloca(&control); if (argc < 1) { error("Specify a full control identifier: [[iface=<iface>,][name='name',][index=<index>,][device=<device>,][subdevice=<subdevice>]]|[numid=<numid>]\n"); return -EINVAL; } if(A_FLOAT==argv->a_type){ snd_ctl_elem_id_set_numid(id, atom_getint(argv)); if(0) { error("Wrong control identifier: %d\n", atom_getint(argv)); return -EINVAL; } } else { if (parse_control_id(atom_getsymbol(argv)->s_name, id)) { error("Wrong control identifier: %s\n", atom_getsymbol(argv)->s_name); return -EINVAL; } } if ((err = snd_ctl_open(&handle, x->card, 0)) < 0) { error("Control %s open error: %s\n", x->card, snd_strerror(err)); return err; } snd_ctl_elem_info_set_id(info, id); if ((err = snd_ctl_elem_info(handle, info)) < 0) { error("Control %s cinfo error: %s\n", x->card, snd_strerror(err)); return err; } snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */ type = snd_ctl_elem_info_get_type(info); count = snd_ctl_elem_info_get_count(info); snd_ctl_elem_value_set_id(control, id); if (!roflag) { t_float atom_float = atom_getfloat(argv+1); int atom_isfloat = (A_FLOAT==(argv+1)->a_type); post("now setting"); ptr = atom_getsymbol(argv+1)->s_name; for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++) { switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: tmp = 0; if(atom_isfloat){ tmp=(atom_float>0)?1:0; } else if (!strncasecmp(ptr, "on", 2) || !strncasecmp(ptr, "up", 2)) { tmp = 1; ptr += 2; } else if (!strncasecmp(ptr, "yes", 3)) { tmp = 1; ptr += 3; } else if (!strncasecmp(ptr, "toggle", 6)) { tmp = snd_ctl_elem_value_get_boolean(control, idx); tmp = tmp > 0 ? 0 : 1; ptr += 6; } else if (isdigit(*ptr)) { tmp = atoi(ptr) > 0 ? 1 : 0; while (isdigit(*ptr)) ptr++; } else { while (*ptr && *ptr != ',') ptr++; } snd_ctl_elem_value_set_boolean(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = atom_isfloat?((int)atom_float):get_integer(&ptr, snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_INTEGER64: tmp = atom_isfloat?((int)atom_float):get_integer64(&ptr, snd_ctl_elem_info_get_min64(info), snd_ctl_elem_info_get_max64(info)); snd_ctl_elem_value_set_integer64(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = atom_isfloat?((int)atom_float):get_integer(&ptr, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(control, idx, tmp); break; case SND_CTL_ELEM_TYPE_BYTES: tmp = atom_isfloat?((int)atom_float):get_integer(&ptr, 0, 255); snd_ctl_elem_value_set_byte(control, idx, tmp); break; default: break; } if (!strchr(atom_getsymbol(argv+1)->s_name, ',')) ptr = atom_getsymbol(argv+1)->s_name; else if (*ptr == ',') ptr++; } if ((err = snd_ctl_elem_write(handle, control)) < 0) { error("Control %s element write error: %s\n", x->card, snd_strerror(err)); return err; } } snd_ctl_close(handle); if (1) { snd_hctl_t *hctl; snd_hctl_elem_t *elem; if ((err = snd_hctl_open(&hctl, x->card, 0)) < 0) { error("Control %s open error: %s\n", x->card, snd_strerror(err)); return err; } if ((err = snd_hctl_load(hctl)) < 0) { error("Control %s load error: %s\n", x->card, snd_strerror(err)); return err; } elem = snd_hctl_find_elem(hctl, id); if (elem) show_control(x->card, " ", elem, LEVEL_BASIC | LEVEL_ID); else printf("Could not find the specified element\n"); snd_hctl_close(hctl); } }
status_t ALSAControl::set(const char *name, unsigned int value, int index) { if (!mHandle) { ALOGE("Control not initialized"); return NO_INIT; } snd_ctl_elem_id_t *id; snd_ctl_elem_info_t *info; snd_ctl_elem_id_alloca(&id); snd_ctl_elem_info_alloca(&info); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_id_set_name(id, name); snd_ctl_elem_info_set_id(info, id); int ret = snd_ctl_elem_info(mHandle, info); if (ret < 0) { ALOGE("Control '%s' cannot get element info: %d", name, ret); return BAD_VALUE; } int count = snd_ctl_elem_info_get_count(info); if (index >= count) { ALOGE("Control '%s' index is out of range (%d >= %d)", name, index, count); return BAD_VALUE; } if (index == -1) index = 0; // Range over all of them else count = index + 1; // Just do the one specified snd_ctl_elem_type_t type = snd_ctl_elem_info_get_type(info); snd_ctl_elem_value_t *control; snd_ctl_elem_value_alloca(&control); snd_ctl_elem_info_get_id(info, id); snd_ctl_elem_value_set_id(control, id); for (int i = index; i < count; i++) switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: snd_ctl_elem_value_set_boolean(control, i, value); break; case SND_CTL_ELEM_TYPE_INTEGER: snd_ctl_elem_value_set_integer(control, i, value); break; case SND_CTL_ELEM_TYPE_INTEGER64: snd_ctl_elem_value_set_integer64(control, i, value); break; case SND_CTL_ELEM_TYPE_ENUMERATED: snd_ctl_elem_value_set_enumerated(control, i, value); break; case SND_CTL_ELEM_TYPE_BYTES: snd_ctl_elem_value_set_byte(control, i, value); break; default: break; } ret = snd_ctl_elem_write(mHandle, control); return (ret < 0) ? BAD_VALUE : NO_ERROR; }
static int execute_cset(snd_ctl_t *ctl, const char *cset, unsigned int type) { const char *pos; int err; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *value; snd_ctl_elem_info_t *info; unsigned int *res = NULL; snd_ctl_elem_id_malloc(&id); snd_ctl_elem_value_malloc(&value); snd_ctl_elem_info_malloc(&info); err = __snd_ctl_ascii_elem_id_parse(id, cset, &pos); if (err < 0) goto __fail; while (*pos && isspace(*pos)) pos++; if (!*pos) { uc_error("undefined value for cset >%s<", cset); err = -EINVAL; goto __fail; } snd_ctl_elem_info_set_id(info, id); err = snd_ctl_elem_info(ctl, info); if (err < 0) goto __fail; if (type == SEQUENCE_ELEMENT_TYPE_CSET_TLV) { if (!snd_ctl_elem_info_is_tlv_writable(info)) { err = -EINVAL; goto __fail; } err = read_tlv_file(&res, pos); if (err < 0) goto __fail; err = snd_ctl_elem_tlv_write(ctl, id, res); if (err < 0) goto __fail; } else { snd_ctl_elem_value_set_id(value, id); err = snd_ctl_elem_read(ctl, value); if (err < 0) goto __fail; if (type == SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE) err = binary_file_parse(value, info, pos); else err = snd_ctl_ascii_value_parse(ctl, value, info, pos); if (err < 0) goto __fail; err = snd_ctl_elem_write(ctl, value); if (err < 0) goto __fail; } err = 0; __fail: if (id != NULL) free(id); if (value != NULL) free(value); if (info != NULL) free(info); if (res != NULL) free(res); return err; }