| /* |
| * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #define LOG_TAG "platform_info" |
| #define LOG_NDDEBUG 0 |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <expat.h> |
| #include <cutils/log.h> |
| #include <cutils/str_parms.h> |
| #include <audio_hw.h> |
| #include "platform_api.h" |
| #include <platform.h> |
| #include <math.h> |
| |
| #define BUF_SIZE 1024 |
| |
| typedef enum { |
| ROOT, |
| ACDB, |
| BITWIDTH, |
| PCM_ID, |
| BACKEND_NAME, |
| INTERFACE_NAME, |
| CONFIG_PARAMS, |
| GAIN_LEVEL_MAPPING, |
| ACDB_METAINFO_KEY, |
| } section_t; |
| |
| typedef void (* section_process_fn)(const XML_Char **attr); |
| |
| static void process_acdb_id(const XML_Char **attr); |
| static void process_bit_width(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_interface_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_gain_db_to_level_map(const XML_Char **attr); |
| static void process_acdb_metainfo_key(const XML_Char **attr); |
| |
| static section_process_fn section_table[] = { |
| [ROOT] = process_root, |
| [ACDB] = process_acdb_id, |
| [BITWIDTH] = process_bit_width, |
| [PCM_ID] = process_pcm_id, |
| [BACKEND_NAME] = process_backend_name, |
| [INTERFACE_NAME] = process_interface_name, |
| [CONFIG_PARAMS] = process_config_params, |
| [GAIN_LEVEL_MAPPING] = process_gain_db_to_level_map, |
| [ACDB_METAINFO_KEY] = process_acdb_metainfo_key, |
| }; |
| |
| 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> |
| * <interface_names> |
| * <device name="Use audio device name here, not sound device name" interface="PRIMARY_I2S" codec_type="external/internal"/> |
| * ... |
| * ... |
| * </interface_names> |
| * <config_params> |
| * <param key="snd_card_name" value="msm8994-tomtom-mtp-snd-card"/> |
| * ... |
| * ... |
| * </config_params> |
| * </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 not found!", |
| __func__, attr[1]); |
| 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 type %d id %d was not set!", |
| __func__, attr[1], 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; |
| char *backend = 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 not found, no ACDB ID set!", |
| __func__, attr[1]); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "backend") != 0) { |
| if (strcmp(attr[2], "interface") == 0) |
| hw_interface = (char *)attr[3]; |
| } else { |
| backend = (char *)attr[3]; |
| } |
| |
| 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, backend, hw_interface) < 0) { |
| ALOGE("%s: Device %s backend %s was not set!", |
| __func__, attr[1], attr[3]); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| static void process_gain_db_to_level_map(const XML_Char **attr) |
| { |
| struct amp_db_and_gain_table tbl_entry; |
| |
| if ((strcmp(attr[0], "db") != 0) || |
| (strcmp(attr[2], "level") != 0)) { |
| ALOGE("%s: invalid attribute passed %s %sexpected amp db level", |
| __func__, attr[0], attr[2]); |
| goto done; |
| } |
| |
| tbl_entry.db = atof(attr[1]); |
| tbl_entry.amp = exp(tbl_entry.db * 0.115129f); |
| tbl_entry.level = atoi(attr[3]); |
| |
| ALOGV("%s: amp [%f] db [%f] level [%d]", __func__, |
| tbl_entry.amp, tbl_entry.db, tbl_entry.level); |
| platform_add_gain_level_mapping(&tbl_entry); |
| |
| 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 platform info xml not found, no ACDB ID set!", |
| __func__, attr[1]); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "acdb_id") != 0) { |
| ALOGE("%s: Device %s in platform info xml has no acdb_id, no ACDB ID set!", |
| __func__, attr[1]); |
| goto done; |
| } |
| |
| if (platform_set_snd_device_acdb_id(index, atoi((char *)attr[3])) < 0) { |
| ALOGE("%s: Device %s, ACDB ID %d was not set!", |
| __func__, attr[1], atoi((char *)attr[3])); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| static void process_bit_width(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 platform info xml not found, no ACDB ID set!", |
| __func__, attr[1]); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "bit_width") != 0) { |
| ALOGE("%s: Device %s in platform info xml has no bit_width, no ACDB ID set!", |
| __func__, attr[1]); |
| goto done; |
| } |
| |
| if (platform_set_snd_device_bit_width(index, atoi((char *)attr[3])) < 0) { |
| ALOGE("%s: Device %s, ACDB ID %d was not set!", |
| __func__, attr[1], atoi((char *)attr[3])); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| static void process_interface_name(const XML_Char **attr) |
| { |
| int ret; |
| |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found, no Audio Interface set!", __func__); |
| |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "interface") != 0) { |
| ALOGE("%s: Device %s has no Audio Interface set!", |
| __func__, attr[1]); |
| |
| goto done; |
| } |
| |
| if (strcmp(attr[4], "codec_type") != 0) { |
| ALOGE("%s: Device %s has no codec type set!", |
| __func__, attr[1]); |
| |
| goto done; |
| } |
| |
| ret = platform_set_audio_device_interface((char *)attr[1], (char *)attr[3], |
| (char *)attr[5]); |
| if (ret < 0) { |
| ALOGE("%s: Audio Interface not set!", __func__); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| 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]); |
| done: |
| return; |
| } |
| |
| /* process acdb meta info key value */ |
| static void process_acdb_metainfo_key(const XML_Char **attr) |
| { |
| if (strcmp(attr[0], "name") != 0) { |
| ALOGE("%s: 'name' not found", __func__); |
| goto done; |
| } |
| |
| if (strcmp(attr[2], "value") != 0) { |
| ALOGE("%s: 'value' not found", __func__); |
| goto done; |
| } |
| |
| int key = atoi((char *)attr[3]); |
| if (platform_set_acdb_metainfo_key(my_data.platform, (char*)attr[1], key) < 0) { |
| ALOGE("%s: key %d was not set!", __func__, key); |
| goto done; |
| } |
| |
| done: |
| return; |
| } |
| |
| static void start_tag(void *userdata __unused, const XML_Char *tag_name, |
| const XML_Char **attr) |
| { |
| if (strcmp(tag_name, "bit_width_configs") == 0) { |
| section = BITWIDTH; |
| } else 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, "interface_names") == 0) { |
| section = INTERFACE_NAME; |
| } else if (strcmp(tag_name, "gain_db_to_level_mapping") == 0) { |
| section = GAIN_LEVEL_MAPPING; |
| } else if(strcmp(tag_name, "acdb_metainfo_key") == 0) { |
| section = ACDB_METAINFO_KEY; |
| } else if (strcmp(tag_name, "device") == 0) { |
| if ((section != ACDB) && (section != BACKEND_NAME) && (section != BITWIDTH) && |
| (section != INTERFACE_NAME)) { |
| ALOGE("device tag only supported for acdb/backend names/bitwitdh/interface names"); |
| return; |
| } |
| |
| /* call into process function for the current section */ |
| section_process_fn fn = section_table[section]; |
| fn(attr); |
| } else if (strcmp(tag_name, "gain_level_map") == 0) { |
| if (section != GAIN_LEVEL_MAPPING) { |
| ALOGE("usecase tag only supported with GAIN_LEVEL_MAPPING section"); |
| return; |
| } |
| |
| section_process_fn fn = section_table[GAIN_LEVEL_MAPPING]; |
| 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) && (section != ACDB_METAINFO_KEY)) { |
| 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, "bit_width_configs") == 0) { |
| section = ROOT; |
| } else 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; |
| platform_set_parameters(my_data.platform, my_data.kvpairs); |
| } else if (strcmp(tag_name, "interface_names") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "gain_db_to_level_mapping") == 0) { |
| section = ROOT; |
| } else if (strcmp(tag_name, "acdb_metainfo_key") == 0) { |
| section = ROOT; |
| } |
| } |
| |
| int platform_info_init(const char *filename, void *platform) |
| { |
| XML_Parser parser; |
| FILE *file; |
| int ret = 0; |
| int bytes_read; |
| void *buf; |
| |
| file = fopen(filename, "r"); |
| section = ROOT; |
| |
| if (!file) { |
| ALOGD("%s: Failed to open %s, using defaults.", |
| __func__, filename); |
| 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, BUF_SIZE); |
| if (buf == NULL) { |
| ALOGE("%s: XML_GetBuffer failed", __func__); |
| ret = -ENOMEM; |
| goto err_free_parser; |
| } |
| |
| bytes_read = fread(buf, 1, BUF_SIZE, 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__, filename); |
| 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; |
| } |