| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * 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 LOG_TAG "platform_info" |
| #define LOG_NDDEBUG 0 |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <expat.h> |
| #include <cutils/log.h> |
| #include <audio_hw.h> |
| #include "platform_api.h" |
| #include <platform.h> |
| |
| #define PLATFORM_INFO_XML_PATH "/system/etc/audio_platform_info.xml" |
| |
| typedef enum { |
| ROOT, |
| ACDB, |
| PCM_ID, |
| BACKEND_NAME, |
| CONFIG_PARAMS, |
| OPERATOR_SPECIFIC, |
| } section_t; |
| |
| typedef void (* section_process_fn)(const XML_Char **attr); |
| |
| static void process_acdb_id(const XML_Char **attr); |
| static void process_pcm_id(const XML_Char **attr); |
| static void process_backend_name(const XML_Char **attr); |
| static void process_config_params(const XML_Char **attr); |
| static void process_root(const XML_Char **attr); |
| static void process_operator_specific(const XML_Char **attr); |
| |
| static section_process_fn section_table[] = { |
| [ROOT] = process_root, |
| [ACDB] = process_acdb_id, |
| [PCM_ID] = process_pcm_id, |
| [BACKEND_NAME] = process_backend_name, |
| [CONFIG_PARAMS] = process_config_params, |
| [OPERATOR_SPECIFIC] = process_operator_specific, |
| }; |
| |
| static section_t section; |
| |
| struct platform_info { |
| void *platform; |
| struct str_parms *kvpairs; |
| }; |
| |
| static struct platform_info my_data; |
| |
| /* |
| * <audio_platform_info> |
| * <acdb_ids> |
| * <device name="???" acdb_id="???"/> |
| * ... |
| * ... |
| * </acdb_ids> |
| * <backend_names> |
| * <device name="???" backend="???"/> |
| * ... |
| * ... |
| * </backend_names> |
| * <pcm_ids> |
| * <usecase name="???" type="in/out" id="???"/> |
| * ... |
| * ... |
| * </pcm_ids> |
| * <config_params> |
| * <param key="snd_card_name" value="msm8994-tomtom-mtp-snd-card"/> |
| * <param key="operator_info" value="tmus;aa;bb;cc"/> |
| * <param key="operator_info" value="sprint;xx;yy;zz"/> |
| * ... |
| * ... |
| * </config_params> |
| * |
| * <operator_specific> |
| * <device name="???" operator="???" mixer_path="???" acdb_id="???"/> |
| * ... |
| * ... |
| * </operator_specific> |
| * |
| * </audio_platform_info> |
| */ |
| |
| static void process_root(const XML_Char **attr __unused) |
| { |
| } |
| |
| /* mapping from usecase to pcm dev id */ |
| static void process_pcm_id(const XML_Char **attr) |
| { |
| int index; |
| |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found, no pcm_id set!", __func__); |
| goto done; |
| } |
| |
| index = platform_get_usecase_index((char *)attr[1]); |
| if (index < 0) { |
| ALOGE("%s: usecase %s in %s not found!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "type") != 0) { |
| ALOGE("%s: usecase type not mentioned", __func__); |
| goto done; |
| } |
| |
| int type = -1; |
| |
| if (!strcasecmp((char *)attr[3], "in")) { |
| type = 1; |
| } else if (!strcasecmp((char *)attr[3], "out")) { |
| type = 0; |
| } else { |
| ALOGE("%s: type must be IN or OUT", __func__); |
| goto done; |
| } |
| |
| if (strcmp(attr[4], "id") != 0) { |
| ALOGE("%s: usecase id not mentioned", __func__); |
| goto done; |
| } |
| |
| int id = atoi((char *)attr[5]); |
| |
| if (platform_set_usecase_pcm_id(index, type, id) < 0) { |
| ALOGE("%s: usecase %s in %s, type %d id %d was not set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH, type, id); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| /* backend to be used for a device */ |
| static void process_backend_name(const XML_Char **attr) |
| { |
| int index; |
| char *hw_interface = NULL; |
| |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found, no ACDB ID set!", __func__); |
| goto done; |
| } |
| |
| index = platform_get_snd_device_index((char *)attr[1]); |
| if (index < 0) { |
| ALOGE("%s: Device %s in %s not found, no ACDB ID set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "backend") != 0) { |
| ALOGE("%s: Device %s in %s has no backed set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (attr[4] != NULL) { |
| if (strcmp(attr[4], "interface") != 0) { |
| hw_interface = NULL; |
| } else { |
| hw_interface = (char *)attr[5]; |
| } |
| } |
| |
| if (platform_set_snd_device_backend(index, attr[3], hw_interface) < 0) { |
| ALOGE("%s: Device %s in %s, backend %s was not set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH, attr[3]); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| static void process_acdb_id(const XML_Char **attr) |
| { |
| int index; |
| |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found, no ACDB ID set!", __func__); |
| goto done; |
| } |
| |
| index = platform_get_snd_device_index((char *)attr[1]); |
| if (index < 0) { |
| ALOGE("%s: Device %s in %s not found, no ACDB ID set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "acdb_id") != 0) { |
| ALOGE("%s: Device %s in %s has no acdb_id, no ACDB ID set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (platform_set_snd_device_acdb_id(index, atoi((char *)attr[3])) < 0) { |
| ALOGE("%s: Device %s in %s, ACDB ID %d was not set!", |
| __func__, attr[1], PLATFORM_INFO_XML_PATH, atoi((char *)attr[3])); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| |
| static void process_operator_specific(const XML_Char **attr) |
| { |
| snd_device_t snd_device = SND_DEVICE_NONE; |
| |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found", __func__); |
| goto done; |
| } |
| |
| snd_device = platform_get_snd_device_index((char *)attr[1]); |
| if (snd_device < 0) { |
| ALOGE("%s: Device %s in %s not found, no ACDB ID set!", |
| __func__, (char *)attr[3], PLATFORM_INFO_XML_PATH); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "operator") != 0) { |
| ALOGE("%s: 'operator' not found", __func__); |
| goto done; |
| } |
| |
| if (strcmp(attr[4], "mixer_path") != 0) { |
| ALOGE("%s: 'mixer_path' not found", __func__); |
| goto done; |
| } |
| |
| if (strcmp(attr[6], "acdb_id") != 0) { |
| ALOGE("%s: 'acdb_id' not found", __func__); |
| goto done; |
| } |
| |
| platform_add_operator_specific_device(snd_device, (char *)attr[3], (char *)attr[5], atoi((char *)attr[7])); |
| |
| done: |
| return; |
| } |
| |
| /* platform specific configuration key-value pairs */ |
| static void process_config_params(const XML_Char **attr) |
| { |
| if (strcmp(attr[0], "key") != 0) { |
| ALOGE("%s: 'key' not found", __func__); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "value") != 0) { |
| ALOGE("%s: 'value' not found", __func__); |
| goto done; |
| } |
| |
| str_parms_add_str(my_data.kvpairs, (char*)attr[1], (char*)attr[3]); |
| platform_set_parameters(my_data.platform, my_data.kvpairs); |
| done: |
| return; |
| } |
| |
| static void start_tag(void *userdata __unused, const XML_Char *tag_name, |
| const XML_Char **attr) |
| { |
| const XML_Char *attr_name = NULL; |
| const XML_Char *attr_value = NULL; |
| unsigned int i; |
| |
| if (strcmp(tag_name, "acdb_ids") == 0) { |
| section = ACDB; |
| } else if (strcmp(tag_name, "pcm_ids") == 0) { |
| section = PCM_ID; |
| } else if (strcmp(tag_name, "backend_names") == 0) { |
| section = BACKEND_NAME; |
| } else if (strcmp(tag_name, "config_params") == 0) { |
| section = CONFIG_PARAMS; |
| } else if (strcmp(tag_name, "operator_specific") == 0) { |
| section = OPERATOR_SPECIFIC; |
| } else if (strcmp(tag_name, "device") == 0) { |
| if ((section != ACDB) && (section != BACKEND_NAME) && (section != OPERATOR_SPECIFIC)) { |
| ALOGE("device tag only supported for acdb/backend names"); |
| return; |
| } |
| |
| /* call into process function for the current section */ |
| section_process_fn fn = section_table[section]; |
| fn(attr); |
| } else if (strcmp(tag_name, "usecase") == 0) { |
| if (section != PCM_ID) { |
| ALOGE("usecase tag only supported with PCM_ID section"); |
| return; |
| } |
| |
| section_process_fn fn = section_table[PCM_ID]; |
| fn(attr); |
| } else if (strcmp(tag_name, "param") == 0) { |
| if (section != CONFIG_PARAMS) { |
| ALOGE("param tag only supported with CONFIG_PARAMS section"); |
| return; |
| } |
| |
| section_process_fn fn = section_table[section]; |
| fn(attr); |
| } |
| |
| return; |
| } |
| |
| static void end_tag(void *userdata __unused, const XML_Char *tag_name) |
| { |
| if (strcmp(tag_name, "acdb_ids") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "pcm_ids") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "backend_names") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "config_params") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "operator_specific") == 0) { |
| section = ROOT; |
| } |
| } |
| |
| int platform_info_init(void *platform) |
| { |
| XML_Parser parser; |
| FILE *file; |
| int ret = 0; |
| int bytes_read; |
| void *buf; |
| static const uint32_t kBufSize = 1024; |
| |
| section = ROOT; |
| |
| file = fopen(PLATFORM_INFO_XML_PATH, "r"); |
| if (!file) { |
| ALOGD("%s: Failed to open %s, using defaults.", |
| __func__, PLATFORM_INFO_XML_PATH); |
| ret = -ENODEV; |
| goto done; |
| } |
| |
| parser = XML_ParserCreate(NULL); |
| if (!parser) { |
| ALOGE("%s: Failed to create XML parser!", __func__); |
| ret = -ENODEV; |
| goto err_close_file; |
| } |
| |
| my_data.platform = platform; |
| my_data.kvpairs = str_parms_create(); |
| |
| XML_SetElementHandler(parser, start_tag, end_tag); |
| |
| while (1) { |
| buf = XML_GetBuffer(parser, kBufSize); |
| if (buf == NULL) { |
| ALOGE("%s: XML_GetBuffer failed", __func__); |
| ret = -ENOMEM; |
| goto err_free_parser; |
| } |
| |
| bytes_read = fread(buf, 1, kBufSize, file); |
| if (bytes_read < 0) { |
| ALOGE("%s: fread failed, bytes read = %d", __func__, bytes_read); |
| ret = bytes_read; |
| goto err_free_parser; |
| } |
| |
| if (XML_ParseBuffer(parser, bytes_read, |
| bytes_read == 0) == XML_STATUS_ERROR) { |
| ALOGE("%s: XML_ParseBuffer failed, for %s", |
| __func__, PLATFORM_INFO_XML_PATH); |
| ret = -EINVAL; |
| goto err_free_parser; |
| } |
| |
| if (bytes_read == 0) |
| break; |
| } |
| |
| err_free_parser: |
| XML_ParserFree(parser); |
| err_close_file: |
| fclose(file); |
| done: |
| return ret; |
| } |
