mirror of
https://github.com/mudita/MuditaOS.git
synced 2026-01-17 02:19:06 -05:00
67a24efb29
Fix of the issue that the device would crash when entering alarm sound selection list after deleting selected file during alarm ringing, but only when file's format was WAV.
96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
// Copyright (c) 2017-2024, Mudita Sp. z.o.o. All rights reserved.
|
|
// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
|
|
|
|
#include "DecoderWAV.hpp"
|
|
#include "DecoderCommon.hpp"
|
|
#include <log/log.hpp>
|
|
#include <memory>
|
|
|
|
#define DR_WAV_IMPLEMENTATION
|
|
#define DR_MP3_NO_STDIO
|
|
|
|
#include <src/dr_wav.h>
|
|
|
|
namespace audio
|
|
{
|
|
DecoderWAV::DecoderWAV(const std::string &filePath) : Decoder(filePath), wav(std::make_unique<drwav>())
|
|
{
|
|
if (fileSize == 0) {
|
|
return;
|
|
}
|
|
|
|
if (drwav_init(wav.get(), drwavRead, drwavSeek, this, nullptr) == DRWAV_FALSE) {
|
|
LOG_ERROR("Unable to init WAV decoder");
|
|
return;
|
|
}
|
|
|
|
/* NOTE: Always convert to S16LE as an internal format */
|
|
channelCount = wav->channels;
|
|
sampleRate = wav->sampleRate;
|
|
bitsPerSample = 16;
|
|
isInitialized = true;
|
|
}
|
|
|
|
DecoderWAV::~DecoderWAV()
|
|
{
|
|
if (isInitialized) {
|
|
drwav_uninit(wav.get());
|
|
}
|
|
}
|
|
|
|
void DecoderWAV::setPosition(float pos)
|
|
{
|
|
if (!isInitialized) {
|
|
LOG_ERROR("WAV decoder not initialized");
|
|
return;
|
|
}
|
|
drwav_seek_to_pcm_frame(wav.get(), wav->totalPCMFrameCount * pos);
|
|
|
|
/* Calculate new position */
|
|
position = static_cast<float>(wav->totalPCMFrameCount) * pos / static_cast<float>(sampleRate);
|
|
}
|
|
|
|
std::int32_t DecoderWAV::decode(std::uint32_t samplesToRead, std::int16_t *pcmData)
|
|
{
|
|
if (!isInitialized) {
|
|
LOG_ERROR("WAV decoder not initialized");
|
|
return 0;
|
|
}
|
|
|
|
const auto samplesRead = drwav_read_pcm_frames_s16(wav.get(), samplesToRead / channelCount, pcmData);
|
|
if (samplesRead > 0) {
|
|
/* Calculate frame duration in seconds */
|
|
position += static_cast<float>(samplesRead) / static_cast<float>(sampleRate);
|
|
}
|
|
else if (!fileExists(fd)) {
|
|
/* Unfortunately this second check of file existence is needed
|
|
* to verify whether lack of new samples was caused by EOF or by
|
|
* deletion of the file. */
|
|
LOG_WARN("File '%s' was deleted during playback!", filePath.c_str());
|
|
return fileDeletedRetCode;
|
|
}
|
|
return samplesRead * channelCount;
|
|
}
|
|
|
|
std::size_t DecoderWAV::drwavRead(void *pUserData, void *pBufferOut, std::size_t bytesToRead)
|
|
{
|
|
const auto decoderContext = reinterpret_cast<DecoderWAV *>(pUserData);
|
|
|
|
/* Check if the file exists - std::fread happily returns bytesToRead if
|
|
* requested to read from deleted file, what causes decoding library
|
|
* to enter infinite loop of reading. */
|
|
if (!fileExists(decoderContext->fd)) {
|
|
return 0;
|
|
}
|
|
return std::fread(pBufferOut, 1, bytesToRead, decoderContext->fd);
|
|
}
|
|
|
|
drwav_bool32 DecoderWAV::drwavSeek(void *pUserData, int offset, drwav_seek_origin origin)
|
|
{
|
|
const auto decoderContext = reinterpret_cast<DecoderWAV *>(pUserData);
|
|
const auto seekError =
|
|
std::fseek(decoderContext->fd, offset, origin == drwav_seek_origin_start ? SEEK_SET : SEEK_CUR);
|
|
return (seekError == 0) ? DRWAV_TRUE : DRWAV_FALSE;
|
|
}
|
|
} // namespace audio
|