feat: Support C++

include/esp32/dl_lib.h

@@ -32,6 +32,10 @@
 #include "esp32s3/rom/cache.h"
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef int padding_state;
 
 // /**
@@ -407,5 +411,8 @@ dl_matrix2d_t *dl_basic_conv_layer(const dl_matrix2d_t *in, const dl_matrix2d_t
 dl_matrix2d_t *dl_basic_conv_layer_quantised_weight(const dl_matrix2d_t *in, const dl_matrix2dq_t *weight, const dl_matrix2d_t *bias, int filter_width, int filter_height, 
                                                      const int out_channels, const int stride_x, const int stride_y,  padding_state pad, const dl_matrix2d_t* out);
 
+#ifdef __cplusplus
+}
 #endif
 
+#endif

include/esp32/dl_lib_coefgetter_if.h

@@ -19,6 +19,10 @@
 #include "dl_lib_matrixq8.h"
 #include "cJSON.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //Set this if the coefficient requested is a batch-normalization popvar matrix which needs to be preprocessed by
 //dl_batch_normalize_get_sqrtvar first.
 #define COEF_GETTER_HINT_BNVAR (1<<0)
@@ -69,4 +73,8 @@ typedef struct {
     const cJSON* (*getter_config)(void *arg);
 } model_coeff_getter_t;
 
-#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/esp32/dl_lib_conv_queue.h

@@ -16,8 +16,11 @@
 
 
 #include "dl_lib_matrix.h"
-typedef float fptp_t;
+#ifdef __cplusplus
+extern "C" {
+#endif
 
+typedef float fptp_t;
 
 //Flags for matrices
 // #define DL_MF_FOREIGNDATA (0)  /*< Matrix *item data actually points to another matrix and should not be freed */
@@ -170,4 +173,8 @@ fptp_t *dl_dilation_layer(dl_conv_queue_t *in, dl_conv_queue_t *out, int rate, i
 
 void test_atrous_conv(int size, int rate, int in_channel, int out_channel);
 
-#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/esp32/dl_lib_convq8_queue.h

@@ -20,6 +20,10 @@
 #include "dl_lib_conv_queue.h"
 #include "dl_lib_convq_queue.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //[nch, n, c]
 typedef struct {
     int n;           /*< the length of queue */
@@ -290,4 +294,9 @@ void print_convq8(dl_convq8_queue_t *cq, int offset);
 void print_convq(dl_convq_queue_t *cq, int offset);
 
 void lstmq8_free(void);
-#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/esp32/dl_lib_convq_queue.h

@@ -18,6 +18,9 @@
 #include "dl_lib_conv_queue.h"
 #include "dl_lib.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 //fixed-point convolution FIFO queue. 
 //[nch, n, c]
@@ -372,4 +375,8 @@ void test_lstm_convq(int size, int in_dim, int lstm_cell);
 void dl_nn_tanh_i162(dl_convq_queue_t **cqm, int offset, int nch);
 void dl_copy_queue_item_by_qmf(dl_convq_queue_t *cq, fptp_t* item, int m_bit, int f_bit, int offset, int ch);
 void dl_convq_queue_mc_bzero(dl_convq_queue_t **cqm, int nch);
-#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/esp32/dl_lib_matrix.h

@@ -21,6 +21,10 @@
 #include "esp_system.h"
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // #ifdef CONFIG_IDF_TARGET_ESP32S3
 // #include "dl_tie728_bzero.h"
 // #endif
@@ -249,5 +253,9 @@ inline static void dl_matrix_set(dl_matrix2d_t *m, const int x, const int y, fpt
 
 void matrix_get_range(const dl_matrix2d_t *m, fptp_t *rmin, fptp_t *rmax);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 

include/esp32/dl_lib_matrixq.h

@@ -17,6 +17,10 @@
 #include <stdint.h>
 #include "dl_lib_matrix.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef int16_t qtp_t;
 
 //Quantized matrix. Uses fixed numbers and has the storage for the rows/columns inverted 
@@ -375,4 +379,9 @@ fptp_t dl_matrixq_get(const dl_matrix2dq_t *m, const int x, const int y);
  */
 void dl_matrixq_set(dl_matrix2dq_t *m, const int x, const int y, fptp_t val);
 
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif

include/esp32/dl_lib_matrixq8.h

@@ -19,6 +19,10 @@
 #include "dl_lib.h"
 #include "dl_lib_matrixq.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef int8_t q8tp_t;
 
 typedef struct {
@@ -68,4 +72,9 @@ dl_matrix2dq8_t *dl_matrixq8_copy_to_psram(const dl_matrix2dq8_t *m);
  */
 dl_matrix2dq8_t *dl_matrixq8_from_matrix2d(const dl_matrix2d_t *m, dl_matrix2dq8_t *out);
 
-#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

include/esp32/esp_afe_config.h

@@ -4,6 +4,10 @@
 #include "esp_wn_models.h"
 #include "esp_vad.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //AFE: Audio Front-End 
 //SR:  Speech Recognition
 //afe_sr/AFE_SR: the audio front-end for speech recognition
@@ -135,4 +139,8 @@ typedef struct {
     .debug_init = false, \
     .debug_hook = {{AFE_DEBUG_HOOK_MASE_TASK_IN, NULL}, {AFE_DEBUG_HOOK_FETCH_TASK_IN, NULL}}, \
 }
+#endif
+
+#ifdef __cplusplus
+}
 #endif

include/esp32/esp_afe_sr_iface.h

@@ -2,6 +2,10 @@
 #include "stdint.h"
 #include "esp_afe_config.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //AFE: Audio Front-End 
 //SR:  Speech Recognition
 //afe_sr/AFE_SR: the audio front-end for speech recognition
@@ -200,3 +204,7 @@ typedef struct {
     esp_afe_sr_iface_op_enable_se_t enable_se;
     esp_afe_sr_iface_op_destroy_t destroy;
 } esp_afe_sr_iface_t;
+
+#ifdef __cplusplus
+}
+#endif

include/esp32/esp_afe_sr_models.h

@@ -1,5 +1,9 @@
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if defined CONFIG_USE_AFE
 #include "esp_afe_sr_iface.h"
 
@@ -24,4 +28,8 @@ extern const esp_afe_sr_iface_t esp_afe_vc_v1;
 #define ESP_AFE_SR_HANDLE esp_afe_sr_v1
 #define ESP_AFE_VC_HANDLE esp_afe_vc_v1
 
+#endif
+
+#ifdef __cplusplus
+}
 #endif

include/esp32/esp_agc.h

@@ -14,6 +14,10 @@
 #ifndef _ESP_AGC_H_
 #define _ESP_AGC_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 ////all positive value is valid, negective is error
 typedef enum {
     ESP_AGC_SUCCESS = 0,   ////success
@@ -28,4 +32,9 @@ void set_agc_config(void *agc_handle, int gain_dB, int limiter_enable, int targe
 int esp_agc_process(void *agc_handle, short *in_pcm, short *out_pcm, int frame_size, int sample_rate);
 void esp_agc_close(void *agc_handle);
 
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif // _ESP_AGC_H_

include/esp32/esp_mase.h

@@ -11,6 +11,12 @@
 // 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
+#ifndef _ESP_MASE_H_
+#define _ESP_MASE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define MASE_SAMPLE_RATE 16000        // Supports 16kHz only
 #define MASE_FRAME_SIZE 16            // Supports 16ms only
@@ -78,4 +84,10 @@ void mase_process(mase_handle_t st, int16_t *in, int16_t *dsp_out);
  * @return None
  *
  */
-void mase_destory(mase_handle_t st);
+void mase_destory(mase_handle_t st);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/esp32/esp_mn_iface.h

@@ -1,6 +1,9 @@
 #pragma once
 #include "stdint.h"
 #include "esp_wn_iface.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define ESP_MN_RESULT_MAX_NUM 5
 #define ESP_MN_MAX_PHRASE_NUM 400
@@ -213,3 +216,7 @@ typedef struct {
     esp_mn_iface_op_print_active_speech_commands print_active_speech_commands;
     esp_mn_iface_op_check_speech_command check_speech_command;
 } esp_mn_iface_t;
+
+#ifdef __cplusplus
+}
+#endif

include/esp32/esp_mn_models.h

@@ -4,7 +4,9 @@
 //Contains declarations of all available speech recognion models. Pair this up with the right coefficients and you have a model that can recognize
 //a specific phrase or word.
 
-
+#ifdef __cplusplus
+extern "C" {
+#endif
 /**
  * @brief Get the multinet handle from model name
  *
@@ -59,3 +61,6 @@ if (r>0) {
 model->destroy(model_data)
 
 */
+#ifdef __cplusplus
+}
+#endif

include/esp32/esp_wn_iface.h

@@ -1,6 +1,10 @@
 #pragma once
 #include "stdint.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //Opaque model data container
 typedef struct model_iface_data_t model_iface_data_t;
 
@@ -183,3 +187,7 @@ typedef struct {
     esp_wn_iface_op_clean_t clean;
     esp_wn_iface_op_destroy_t destroy;
 } esp_wn_iface_t;
+
+#ifdef __cplusplus
+}
+#endif

include/esp32/esp_wn_models.h

@@ -1,6 +1,9 @@
 #pragma once
 #include "esp_wn_iface.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 // The prefix of wakenet model name is used to filter all wakenet from availabel models.
 #define ESP_WN_PREFIX "wn"
@@ -98,6 +101,10 @@ char* esp_wn_wakeword_from_name(const char *model_name);
 #define WAKENET_COEFF "COEFF_NULL"
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 /*
 
 static const sr_model_iface_t *model = esp_wn_handle_from_name(model_name);

include/esp32s3/esp_afe_config.h

@@ -139,7 +139,8 @@ typedef struct {
     .debug_init = false, \
     .debug_hook = {{AFE_DEBUG_HOOK_MASE_TASK_IN, NULL}, {AFE_DEBUG_HOOK_FETCH_TASK_IN, NULL}}, \
 }
+#endif
 
 #ifdef __cplusplus
 }
-#endif
+#endif

src/include/esp_mn_speech_commands.h

@@ -15,6 +15,10 @@
 #include "esp_err.h"
 #include "esp_mn_iface.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
 esp_mn_node_t is a singly linked list which is used to manage speech commands. 
 It is easy to add one speech command into linked list and remove one speech command from linked list.
@@ -170,4 +174,8 @@ void esp_mn_commands_print(void);
 /**
  * @brief Print all active commands.
  */
-void esp_mn_active_commands_print(void);
+void esp_mn_active_commands_print(void);
+
+#ifdef __cplusplus
+}
+#endif

src/include/esp_process_sdkconfig.h

@@ -2,6 +2,10 @@
 #include "esp_err.h"
 #include "esp_mn_iface.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * @brief Check chip config to ensure optimum performance
  */
@@ -21,3 +25,7 @@ void check_chip_config(void);
  *     - ESP_ERR_INVALID_STATE   Fail
  */
 esp_mn_error_t* esp_mn_commands_update_from_sdkconfig(const esp_mn_iface_t *multinet, model_iface_data_t *model_data);
+
+#ifdef __cplusplus
+}
+#endif

src/include/model_path.h

@@ -5,7 +5,9 @@
 #include "esp_partition.h"
 #endif
 
-#define ESP_SR_IDF_V5
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 typedef struct {
     int num;                 // the number of files
@@ -119,4 +121,9 @@ srmodel_list_t *get_static_srmodels(void);
  * @return model_coeff_getter_t pointer or NULL
  */
 model_coeff_getter_t *srmodel_get_model_coeff(char *model_name);
+#endif
+
+
+#ifdef __cplusplus
+}
 #endif