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/* ------------------------------------------------------------------
* Copyright (C) 2017 Matthias P. Braendli
*
* 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.
* -------------------------------------------------------------------
*/
/*! \section File Input
*
* This input reads a wav or raw file.
*
* The raw input needs to be signed 16-bit per sample data, with
* the number of channels corresponding to the command line.
*
* The wav input must also correspond to the parameters on the command
* line (number of channels, rate)
*/
#pragma once
#include <stdint.h>
#include <cstdio>
#include <string>
#include "SampleQueue.h"
#include "InputInterface.h"
class FileInput : public InputInterface
{
public:
FileInput(const std::string& filename,
bool raw_input,
int sample_rate,
bool continue_after_eof,
SampleQueue<uint8_t>& queue) :
m_filename(filename),
m_raw_input(raw_input),
m_sample_rate(sample_rate),
m_continue_after_eof(continue_after_eof),
m_queue(queue) {}
~FileInput();
FileInput(const FileInput& other) = delete;
FileInput& operator=(const FileInput& other) = delete;
/*! Open the file and prepare the wav decoder. */
virtual void prepare(void) override;
virtual bool fault_detected(void) const override { return false; };
virtual bool read_source(size_t num_bytes) override;
protected:
std::string m_filename;
bool m_raw_input;
int m_sample_rate;
bool m_continue_after_eof;
SampleQueue<uint8_t>& m_queue;
/* handle to the wav reader */
void *m_wav = nullptr;
FILE* m_in_fh = nullptr;
};
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