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Diffstat (limited to 'ahl-binding/ahl-json.c')
| -rw-r--r-- | ahl-binding/ahl-json.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/ahl-binding/ahl-json.c b/ahl-binding/ahl-json.c new file mode 100644 index 0000000..5e8bf97 --- /dev/null +++ b/ahl-binding/ahl-json.c @@ -0,0 +1,296 @@ +/* + * 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 AFB_BINDING_VERSION 2 +#include <afb/afb-binding.h> +#include "wrap-json.h" +#include <json-c/json.h> +#include <glib.h> +#include "ahl-binding.h" + +static char * DeviceURITypeEnumToStr(DeviceURITypeT in_eDeviceURIType) { + switch(in_eDeviceURIType) { + case DEVICEURITYPE_ALSA_HW: // Alsa hardware device URI + return AHL_DEVICEURITYPE_ALSA_HW; + case DEVICEURITYPE_ALSA_DMIX: // Alsa Dmix device URI (only for playback devices) + return AHL_DEVICEURITYPE_ALSA_DMIX; + case DEVICEURITYPE_ALSA_DSNOOP: // Alsa DSnoop device URI (only for capture devices) + return AHL_DEVICEURITYPE_ALSA_DSNOOP; + case DEVICEURITYPE_ALSA_SOFTVOL: // Alsa softvol device URI + return AHL_DEVICEURITYPE_ALSA_SOFTVOL; + case DEVICEURITYPE_ALSA_PLUG: // Alsa plug device URI + return AHL_DEVICEURITYPE_ALSA_PLUG; + case DEVICEURITYPE_ALSA_OTHER: // Alsa domain URI device of unspecified type + return AHL_DEVICEURITYPE_ALSA_OTHER; + case DEVICEURITYPE_NOT_ALSA: // Unknown (not ALSA domain) + return AHL_DEVICEURITYPE_NOT_ALSA; + default: + return "Unknown"; + } +} + +static char * StreamStateEnumToStr(StreamStateT in_eStreamState) { + switch(in_eStreamState) { + case STREAM_STATE_IDLE: + return AHL_STREAM_STATE_IDLE; + case STREAM_STATE_RUNNING: + return AHL_STREAM_STATE_RUNNING; + case STREAM_STATE_PAUSED: + return AHL_STREAM_STATE_PAUSED; + default: + return "Unknown"; + } +} + +static char * StreamMuteEnumToStr(StreamMuteT in_eStreamMute) { + switch(in_eStreamMute) { + case STREAM_UNMUTED: + return AHL_STREAM_UNMUTED; + case STREAM_MUTED: + return AHL_STREAM_MUTED; + default: + return "Unknown"; + } +} + +static int EndpointPropTableToJSON(GHashTable * pPropTable, json_object **ppProptableJ) +{ + if(pPropTable == NULL) + { + AFB_ERROR("Invalid EndpointPropTableToJSON arguments"); + return AHL_FAIL; + } + + // Create json object for PropTable + *ppProptableJ = json_object_new_array(); + GHashTableIter iter; + gpointer key, value; + g_hash_table_iter_init (&iter, pPropTable); + while (g_hash_table_iter_next (&iter, &key, &value)) + { + if ( key != NULL && value != NULL) { + json_object *pPropertyJ = NULL; + json_object_get(value); + int err = wrap_json_pack(&pPropertyJ, "{s:s,s:o}", + "property_name", (char*)key, + "property_value", value + ); + if(err) + { + AFB_ERROR("Unable to pack JSON endpoint, =%s", wrap_json_get_error_string(err)); + return AHL_FAIL; + } + json_object_array_add(*ppProptableJ, pPropertyJ); + } + } + + return AHL_SUCCESS; +} + +int EndpointInfoToJSON(EndpointInfoT * pEndpointInfo, json_object **ppEndpointInfoJ) +{ + if(pEndpointInfo == NULL || pEndpointInfo->pPropTable == NULL) + { + AFB_ERROR("Invalid EndpointInfoToJSON arguments"); + return AHL_FAIL; + } + + json_object * pPropTableJ = NULL; + int err = EndpointPropTableToJSON(pEndpointInfo->pPropTable,&pPropTableJ); + if (err) { + return AHL_FAIL; + } + + // Create json object for EndpointInfo + err = wrap_json_pack(ppEndpointInfoJ, "{s:i,s:i,s:s,s:s,s:s,s:s,s:s,s:i,s:s,s:i,s:i,s:i,s:i,s:i,s:i,s:i,s:o}", + "endpoint_id", pEndpointInfo->endpointID, + "endpoint_type", pEndpointInfo->type, + "device_name", pEndpointInfo->gsDeviceName, + "display_name", pEndpointInfo->gsDisplayName, + "device_uri", pEndpointInfo->gsDeviceURI, + "device_domain", pEndpointInfo->gsDeviceDomain, + "audio_role",pEndpointInfo->pRoleName, + "device_uri_type", pEndpointInfo->deviceURIType, + "hal_api_name", pEndpointInfo->gsHALAPIName, + "alsa_cardNum", pEndpointInfo->alsaInfo.cardNum, + "alsa_deviceNum", pEndpointInfo->alsaInfo.deviceNum, + "alsa_subDeviceNum", pEndpointInfo->alsaInfo.subDeviceNum, + "format_samplerate", pEndpointInfo->format.sampleRate, + "format_numchannels", pEndpointInfo->format.numChannels, + "format_sampletype",pEndpointInfo->format.sampleType, + "volume", pEndpointInfo->iVolume, + "property_table", pPropTableJ + ); + if (err) { + AFB_ERROR("Unable to pack JSON endpoint, =%s", wrap_json_get_error_string(err)); + return AHL_FAIL; + } + + return AHL_SUCCESS; +} + +int StreamInfoToJSON(StreamInfoT * pStreamInfo, json_object **ppStreamInfoJ) +{ + if(pStreamInfo == NULL) + { + AFB_ERROR("Invalid arguments to StreamInfoToJSON"); + return AHL_FAIL; + } + + json_object * pEndpointInfoJ = NULL; + int err = EndpointInfoToJSON(pStreamInfo->pEndpointInfo, &pEndpointInfoJ); + if (err) { + return AHL_FAIL; + } + + // Create json object for stream + err = wrap_json_pack(ppStreamInfoJ, "{s:i,s:i,s:i,s:I,s:i,s:s,s:i,s:i,s:o}", + "stream_id", pStreamInfo->streamID, + "stream_state", pStreamInfo->streamState, + "stream_mute", pStreamInfo->streamMute, + "stream_state_event", &pStreamInfo->streamStateEvent, + "endpoint_sel_mod", pStreamInfo->endpointSelMode, + "role_name", pStreamInfo->pRoleName, + "priority", pStreamInfo->iPriority, + "interrupt_behavior", pStreamInfo->eInterruptBehavior, + "endpoint_info", pEndpointInfoJ + ); + if (err) { + AFB_ERROR("Unable to pack JSON endpoint, =%s", wrap_json_get_error_string(err)); + return AHL_FAIL; + } + + return AHL_SUCCESS; +} + +static int UpdatePropertyList(GHashTable * pPropTable, json_object * pPropTableJ) { + if (pPropTable == NULL || pPropTableJ == NULL) { + AFB_ERROR("Invalid arguments to UpdatePropertyList"); + return AHL_FAIL; + } + // Unpack prop table + int nbProperties = json_object_array_length(pPropTableJ); + for(int i = 0; i < nbProperties; i++) + { + json_object * propJ = json_object_array_get_idx(pPropTableJ,i); + if (propJ) { + char * pPropertyName = NULL; + json_object * pPropertyValueJ = NULL; + int err = wrap_json_unpack(propJ, "{s:s,s:o}", + "property_name", &pPropertyName, + "property_value", &pPropertyValueJ); + if (err) { + AFB_ERROR("Unable to unpack JSON property, = %s", wrap_json_get_error_string(err)); + return AHL_FAIL; + } + + // Object type detection for property value (string = state, numeric = property) + json_type jType = json_object_get_type(pPropertyValueJ); + switch (jType) { + case json_type_double: + g_hash_table_insert(pPropTable, pPropertyName, json_object_new_double(json_object_get_double(pPropertyValueJ))); + break; + case json_type_int: + g_hash_table_insert(pPropTable, pPropertyName, json_object_new_int(json_object_get_int(pPropertyValueJ))); + break; + case json_type_string: + g_hash_table_insert(pPropTable, pPropertyName, json_object_new_string(json_object_get_string(pPropertyValueJ))); + break; + default: + AFB_ERROR("Invalid property argument Property value not a valid json object query=%s", json_object_get_string(pPropertyValueJ)); + return AHL_FAIL; + } + } + } + + return AHL_SUCCESS; +} + +int UpdateEndpointInfo(EndpointInfoT * pEndpoint, json_object * pEndpointInfoJ) { + + if(pEndpoint == NULL || pEndpointInfoJ == NULL) + { + AFB_ERROR("Invalid arguments to UpdateEndpointInfo"); + return AHL_FAIL; + } + + // Push information to endpoint info struct + json_object * pPropTableJ = NULL; + char * pDisplayName = NULL; + char * pHALName = NULL; + int err = wrap_json_unpack(pEndpointInfoJ,"{s:i,s:s,s:s,s:o}", + "init_volume",&pEndpoint->iVolume, + "display_name",&pDisplayName, + "hal_name", &pHALName, + "property_table",&pPropTableJ); + if (err) { + AFB_ERROR("Unable to create Endpoint Json object error:%s ",wrap_json_get_error_string(err)); + return AHL_FAIL; + } + g_strlcpy(pEndpoint->gsDisplayName,pDisplayName,AHL_STR_MAX_LENGTH); + g_strlcpy(pEndpoint->gsHALAPIName,pHALName,AHL_STR_MAX_LENGTH); + + if (pEndpoint->pPropTable && pPropTableJ) { + err = UpdatePropertyList(pEndpoint->pPropTable,pPropTableJ); + if (err) { + AFB_ERROR("Unable to update property table Json object error:%s ",wrap_json_get_error_string(err)); + return AHL_FAIL; + } + } + + return AHL_SUCCESS; +} + +static void AudioFormatStructToJSON(json_object **audioFormatJ, AudioFormatT * pAudioFormat) +{ + wrap_json_pack(audioFormatJ, "{s:i,s:i,s:i}", + "sample_rate", pAudioFormat->sampleRate, + "num_channels", pAudioFormat->numChannels, + "sample_type", pAudioFormat->sampleType); +} + +// Package only information that can useful to application clients when selecting endpoint +void JSONPublicPackageEndpoint(EndpointInfoT * pEndpointInfo,json_object **endpointInfoJ) +{ + json_object *formatInfoJ = NULL; + wrap_json_pack(endpointInfoJ, "{s:i,s:s,s:s,s:s,s:s,s:s,s:s}", + "endpoint_id", pEndpointInfo->endpointID, + "endpoint_type", (pEndpointInfo->type == ENDPOINTTYPE_SOURCE) ? AHL_ENDPOINTTYPE_SOURCE : AHL_ENDPOINTTYPE_SINK, + "device_name", pEndpointInfo->gsDeviceName, + "display_name", pEndpointInfo->gsDisplayName, + "audio_role", pEndpointInfo->pRoleName, + "device_domain",pEndpointInfo->gsDeviceDomain, + "device_uri_type", DeviceURITypeEnumToStr(pEndpointInfo->deviceURIType)); + AudioFormatStructToJSON(&formatInfoJ,&pEndpointInfo->format); + json_object_object_add(*endpointInfoJ,"format",formatInfoJ); + + json_object *pPropTableJ = NULL; + EndpointPropTableToJSON(pEndpointInfo->pPropTable,&pPropTableJ); + json_object_object_add(*endpointInfoJ,"properties",pPropTableJ); +} + +// Package only information that can useful to application clients when opening a stream +void JSONPublicPackageStream(StreamInfoT * pStreamInfo,json_object **streamInfoJ) +{ + json_object *endpointInfoJ = NULL; + JSONPublicPackageEndpoint(pStreamInfo->pEndpointInfo,&endpointInfoJ); + wrap_json_pack(streamInfoJ, "{s:i,s:s,s:s,s:s}", + "stream_id", pStreamInfo->streamID, + "state", StreamStateEnumToStr(pStreamInfo->streamState), + "mute", StreamMuteEnumToStr(pStreamInfo->streamMute), + "device_uri",pStreamInfo->pEndpointInfo->gsDeviceURI); // Need to open a stream to have access to the device URI + json_object_object_add(*streamInfoJ,"endpoint_info",endpointInfoJ); +}
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