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Diffstat (limited to 'src/ahl-deviceenum.c')
| -rw-r--r-- | src/ahl-deviceenum.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/src/ahl-deviceenum.c b/src/ahl-deviceenum.c deleted file mode 100644 index 7e67d7a..0000000 --- a/src/ahl-deviceenum.c +++ /dev/null @@ -1,331 +0,0 @@ -/* - * Copyright (C) 2017 "Audiokinetic Inc" - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define _GNU_SOURCE -#include <stdio.h> -#include <string.h> -#include <alsa/asoundlib.h> -#include <alsa/pcm.h> -#include <json-c/json.h> -#include "wrap-json.h" - -#include "ahl-binding.h" -#include "ahl-policy.h" - -extern AHLCtxT g_AHLCtx; - -// TODO: Hash from endpoint ID information instead -static endpointID_t CreateNewSourceID() -{ - endpointID_t newID = g_AHLCtx.nextSourceEndpointID; - g_AHLCtx.nextSourceEndpointID++; - return newID; -} - -// TODO: Hash from endpoint ID information instead -static endpointID_t CreateNewSinkID() -{ - endpointID_t newID = g_AHLCtx.nextSinkEndpointID; - g_AHLCtx.nextSinkEndpointID++; - return newID; -} - -// Watchout: This function uses strtok and is destructive on the input string (use a copy) -static int SeparateDomainFromDeviceURI( char * in_pDeviceURI, char ** out_pDomain, char ** out_pDevice) -{ - *out_pDomain = strtok(in_pDeviceURI, "."); - if (*out_pDomain == NULL) - { - AFB_ERROR("Error tokenizing device URI -> %s",in_pDeviceURI); - return 1; - } - // TODO: Validate domain is known string (e.g. ALSA,Pulse,GStreamer) - *out_pDevice = strtok(NULL, "."); - if (*out_pDevice == NULL) - { - AFB_ERROR("Error tokenizing device URI -> %s",in_pDeviceURI); - return 1; - } - return 0; -} - -static int IsAlsaDomain(const char * in_pDomainStr) -{ - return (int) (strcasecmp(in_pDomainStr,AHL_DOMAIN_ALSA) == 0); -} - -static int IsPulseDomain(const char * in_pDomainStr) -{ - return (int) (strcasecmp(in_pDomainStr,AHL_DOMAIN_PULSE) == 0); -} - -static int IsGStreamerDomain(const char * in_pDomainStr) -{ - return (int) (strcasecmp(in_pDomainStr,AHL_DOMAIN_GSTREAMER) == 0); -} - -static int IsExternalDomain(const char * in_pDomainStr) -{ - return (int) (strcasecmp(in_pDomainStr,AHL_DOMAIN_EXTERNAL) == 0); -} - -static int FillALSAPCMInfo( snd_pcm_t * in_pPcmHandle, EndpointInfoT * out_pEndpointInfo ) -{ - g_assert_nonnull(in_pPcmHandle); - g_assert_nonnull(out_pEndpointInfo); - snd_pcm_type_t pcmType = 0; - snd_pcm_info_t * pPcmInfo = NULL; - int iAlsaRet = 0; - const char * pCardName = NULL; - int retVal = 0; - snd_ctl_t * ctlHandle = NULL; - snd_ctl_card_info_t * ctlInfo = NULL; - - snd_pcm_info_alloca(&pPcmInfo); - snd_ctl_card_info_alloca(&ctlInfo); - - // retrieve PCM type - pcmType = snd_pcm_type(in_pPcmHandle); - switch (pcmType) { - case SND_PCM_TYPE_HW: - out_pEndpointInfo->deviceURIType = DEVICEURITYPE_ALSA_HW; - break; - case SND_PCM_TYPE_DMIX: - out_pEndpointInfo->deviceURIType = DEVICEURITYPE_ALSA_DMIX; - break; - case SND_PCM_TYPE_SOFTVOL: - out_pEndpointInfo->deviceURIType = DEVICEURITYPE_ALSA_SOFTVOL; - break; - case SND_PCM_TYPE_PLUG: - out_pEndpointInfo->deviceURIType = DEVICEURITYPE_ALSA_PLUG; - break; - default: - out_pEndpointInfo->deviceURIType = DEVICEURITYPE_ALSA_OTHER; - break; - } - - iAlsaRet = snd_pcm_info(in_pPcmHandle,pPcmInfo); - if (iAlsaRet < 0) - { - AFB_WARNING("Error retrieving PCM device info"); - return 1; - } - - // get card number - out_pEndpointInfo->alsaInfo.cardNum = snd_pcm_info_get_card(pPcmInfo); - if ( out_pEndpointInfo->alsaInfo.cardNum < 0 ) - { - AFB_WARNING("No Alsa card number available"); - return 1; - } - - // get device number - out_pEndpointInfo->alsaInfo.deviceNum = snd_pcm_info_get_device(pPcmInfo); - if ( out_pEndpointInfo->alsaInfo.deviceNum < 0 ) - { - AFB_WARNING("No Alsa device number available"); - return 1; - } - - // get sub-device number - out_pEndpointInfo->alsaInfo.subDeviceNum = snd_pcm_info_get_subdevice(pPcmInfo); - if ( out_pEndpointInfo->alsaInfo.subDeviceNum < 0 ) - { - AFB_WARNING("No Alsa subdevice number available"); - return 1; - } - - char cardName[32]; - sprintf(cardName, "hw:%d", out_pEndpointInfo->alsaInfo.cardNum); - iAlsaRet = snd_ctl_open(&ctlHandle, cardName, 0); - if ( iAlsaRet < 0 ) - { - AFB_WARNING("Could not open ALSA card control"); - return 1; - } - - iAlsaRet = snd_ctl_card_info(ctlHandle, ctlInfo); - if ( iAlsaRet < 0 ) - { - AFB_WARNING("Could not retrieve ALSA card info"); - snd_ctl_close(ctlHandle); - return 1; - } - - // Populate unique target card name - pCardName = snd_ctl_card_info_get_id(ctlInfo); - if (pCardName == NULL) - { - AFB_WARNING("No Alsa card name available"); - snd_ctl_close(ctlHandle); - return 1; - } - out_pEndpointInfo->gsDeviceName = g_strdup(pCardName); - - snd_ctl_close(ctlHandle); - - return retVal; -} - -EndpointInfoT * InitEndpointInfo() -{ - EndpointInfoT * pEndpointInfo = (EndpointInfoT*) malloc(sizeof(EndpointInfoT)); - memset(pEndpointInfo,0,sizeof(EndpointInfoT)); - pEndpointInfo->endpointID = AHL_UNDEFINED; - pEndpointInfo->type = ENDPOINTTYPE_MAXVALUE; - pEndpointInfo->deviceURIType = DEVICEURITYPE_MAXVALUE; - pEndpointInfo->alsaInfo.cardNum = AHL_UNDEFINED; - pEndpointInfo->alsaInfo.deviceNum = AHL_UNDEFINED; - pEndpointInfo->alsaInfo.subDeviceNum = AHL_UNDEFINED; - pEndpointInfo->format.sampleRate = AHL_UNDEFINED; - pEndpointInfo->format.numChannels = AHL_UNDEFINED; - pEndpointInfo->format.sampleType = AHL_FORMAT_UNKNOWN; - pEndpointInfo->pPropTable = g_hash_table_new(g_str_hash, g_str_equal); - return pEndpointInfo; -} - -void TermEndpointInfo( EndpointInfoT * out_pEndpointInfo ) -{ - #define SAFE_FREE(__ptr__) if(__ptr__) g_free(__ptr__); __ptr__ = NULL; - SAFE_FREE(out_pEndpointInfo->gsDeviceName); - SAFE_FREE(out_pEndpointInfo->gsDisplayName); - SAFE_FREE(out_pEndpointInfo->gsDeviceDomain); - SAFE_FREE(out_pEndpointInfo->pRoleName); - SAFE_FREE(out_pEndpointInfo->gsDeviceURI); - SAFE_FREE(out_pEndpointInfo->gsHALAPIName); - - if (out_pEndpointInfo->pPropTable) { - // Free json_object for all property values - GHashTableIter iter; - gpointer key, value; - g_hash_table_iter_init (&iter, out_pEndpointInfo->pPropTable); - while (g_hash_table_iter_next (&iter, &key, &value)) - { - if (value) - json_object_put(value); - } - g_hash_table_remove_all(out_pEndpointInfo->pPropTable); - g_hash_table_destroy(out_pEndpointInfo->pPropTable); - out_pEndpointInfo->pPropTable = NULL; - } - // GLib automatically frees item when removed from the array -} - -// For a given audio role -int EnumerateDevices(json_object * in_jDeviceArray, char * in_pAudioRole, EndpointTypeT in_deviceType, GPtrArray * out_pEndpointArray) { - - g_assert_nonnull(in_jDeviceArray); - int iNumberDevices = json_object_array_length(in_jDeviceArray); - - // Parse and validate list of available devices - for (int i = 0; i < iNumberDevices; i++) - { - char * pDeviceURIDomain = NULL; - char * pFullDeviceURI = NULL; - char * pDeviceURIPCM = NULL; - int err = 0; - - json_object * jDevice = json_object_array_get_idx(in_jDeviceArray,i); - if (jDevice == NULL) { - AFB_WARNING("Invalid device array -> %s",json_object_to_json_string(in_jDeviceArray)); - continue; - } - // strip domain name from URI - pFullDeviceURI = (char *)json_object_get_string(jDevice); - char * pFullDeviceURICopy = g_strdup(pFullDeviceURI); // strtok is destructive - err = SeparateDomainFromDeviceURI(pFullDeviceURICopy,&pDeviceURIDomain,&pDeviceURIPCM); - if (err) - { - AFB_WARNING("Invalid device URI string -> %s",pFullDeviceURICopy); - continue; - } - - EndpointInfoT * pEndpointInfo = InitEndpointInfo(); - g_assert_nonnull(pEndpointInfo); - - // non ALSA URI are simply passed to application (no validation) at this time - // In Non ALSA case devices in config are assumed to be available, if not application can fallback on explicit device selection - pEndpointInfo->gsDeviceName = g_strdup(pDeviceURIPCM); - pEndpointInfo->gsDeviceDomain = g_strdup(pDeviceURIDomain); - pEndpointInfo->gsDeviceURI = g_strdup(pDeviceURIPCM); - pEndpointInfo->pRoleName = g_strdup(in_pAudioRole); - - g_free(pFullDeviceURICopy); - pFullDeviceURICopy = NULL; - pDeviceURIDomain = NULL; //Derived from above mem - pDeviceURIPCM = NULL; //Derived from above mem - - if (IsAlsaDomain(pEndpointInfo->gsDeviceDomain)) - { - // TODO: Missing support for loose name matching - // This will require using ALSA hints to get PCM names - // And would iterate over all available devices matching string (possibly all if no filtering is desired for a certain role) - - // Get PCM handle - snd_pcm_t * pPcmHandle = NULL; - snd_pcm_stream_t streamType = in_deviceType == ENDPOINTTYPE_SOURCE ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK; - err = snd_pcm_open(&pPcmHandle, pEndpointInfo->gsDeviceURI, streamType, 0); - if (err < 0) - { - AFB_NOTICE("Alsa PCM device was not found -> %s", pEndpointInfo->gsDeviceURI); - continue; - } - - err = FillALSAPCMInfo(pPcmHandle,pEndpointInfo); - if (err) { - AFB_WARNING("Unable to retrieve PCM information for PCM -> %s",pEndpointInfo->gsDeviceURI); - snd_pcm_close(pPcmHandle); - continue; - } - - snd_pcm_close(pPcmHandle); - } - else if (IsPulseDomain(pEndpointInfo->gsDeviceDomain)) { - // Pulse domain - // For now display name is device URI directly, could extrapolated using more heuristics or even usins Pulse API later on - pEndpointInfo->deviceURIType = DEVICEURITYPE_NOT_ALSA; - } - else if (IsGStreamerDomain(pEndpointInfo->gsDeviceDomain)){ - // GStreamer domain - // For now display name is device URI directly, could extrapolated using more heuristics or even usins GStreamer API later on - pEndpointInfo->deviceURIType = DEVICEURITYPE_NOT_ALSA; - } - else if (IsExternalDomain(pEndpointInfo->gsDeviceDomain)){ - // External domain - pEndpointInfo->deviceURIType = DEVICEURITYPE_NOT_ALSA; - } - else { - // Unknown domain - AFB_WARNING("Unknown domain in device URI string -> %s",pFullDeviceURI); - continue; - } - - pEndpointInfo->endpointID = in_deviceType == ENDPOINTTYPE_SOURCE ? CreateNewSourceID() : CreateNewSinkID(); - pEndpointInfo->type = in_deviceType; - // Assigned by policy initialization - pEndpointInfo->gsDisplayName = malloc(AHL_STR_MAX_LENGTH*sizeof(char)); - memset(pEndpointInfo->gsDisplayName,0,AHL_STR_MAX_LENGTH*sizeof(char)); - pEndpointInfo->gsHALAPIName = malloc(AHL_STR_MAX_LENGTH*sizeof(char)); - memset(pEndpointInfo->gsDisplayName,0,AHL_STR_MAX_LENGTH*sizeof(char)); - - // add to structure to list of available devices - g_ptr_array_add(out_pEndpointArray, pEndpointInfo); - - } // for all devices - - AFB_DEBUG ("Audio high-level - Enumerate devices done"); - return 0; -}
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