1da0ca88e8
* create TFLite library * add TFLite hello_world example * add TFLite micro_speech example --------- Co-authored-by: Sanket Wadekar <67091512+sanketwadekar@users.noreply.github.com>
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_LITE_MICRO_EXAMPLES_MICRO_SPEECH_ESP_RINGBUF_H_
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#define TENSORFLOW_LITE_MICRO_EXAMPLES_MICRO_SPEECH_ESP_RINGBUF_H_
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#include <freertos/FreeRTOS.h>
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#include <freertos/semphr.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RB_FAIL ESP_FAIL
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#define RB_ABORT -1
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#define RB_WRITER_FINISHED -2
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#define RB_READER_UNBLOCK -3
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#if __has_include("esp_idf_version.h")
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#include "esp_idf_version.h"
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#else
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#define ESP_IDF_VERSION_VAL(major, minor, patch) 0
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#endif
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#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0))
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#if !(configENABLE_BACKWARD_COMPATIBILITY == 1)
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#define xSemaphoreHandle SemaphoreHandle_t
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#endif
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#endif
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typedef struct ringbuf {
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char* name;
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uint8_t* base; /**< Original pointer */
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/* XXX: these need to be volatile? */
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uint8_t* volatile readptr; /**< Read pointer */
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uint8_t* volatile writeptr; /**< Write pointer */
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volatile ssize_t fill_cnt; /**< Number of filled slots */
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ssize_t size; /**< Buffer size */
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xSemaphoreHandle can_read;
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xSemaphoreHandle can_write;
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xSemaphoreHandle lock;
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int abort_read;
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int abort_write;
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int writer_finished; // to prevent infinite blocking for buffer read
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int reader_unblock;
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} ringbuf_t;
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ringbuf_t* rb_init(const char* rb_name, uint32_t size);
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void rb_abort_read(ringbuf_t* rb);
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void rb_abort_write(ringbuf_t* rb);
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void rb_abort(ringbuf_t* rb);
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void rb_reset(ringbuf_t* rb);
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/**
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* @brief Special function to reset the buffer while keeping rb_write aborted.
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* This rb needs to be reset again before being useful.
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*/
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void rb_reset_and_abort_write(ringbuf_t* rb);
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void rb_stat(ringbuf_t* rb);
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ssize_t rb_filled(ringbuf_t* rb);
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ssize_t rb_available(ringbuf_t* rb);
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int rb_read(ringbuf_t* rb, uint8_t* buf, int len, uint32_t ticks_to_wait);
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int rb_write(ringbuf_t* rb, const uint8_t* buf, int len,
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uint32_t ticks_to_wait);
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void rb_cleanup(ringbuf_t* rb);
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void rb_signal_writer_finished(ringbuf_t* rb);
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void rb_wakeup_reader(ringbuf_t* rb);
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int rb_is_writer_finished(ringbuf_t* rb);
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#ifdef __cplusplus
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}
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#endif
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#endif // TENSORFLOW_LITE_MICRO_EXAMPLES_MICRO_SPEECH_ESP_RINGBUF_H_
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