mirror of
https://github.com/mudita/MuditaOS.git
synced 2026-01-25 06:18:18 -05:00
871b250d86
Refactor audio data path to fix several synchronization issues and excessive copy operations on large memory blocks. Introduce audio::Stream data structure to allow connecting audio source and sink with a zero-copy capability. Introduce system mechanisms: - critical section guard lock needed for stream synchronization - non-cacheable memory allocator to allocate memory for DMA safe buffers Update the Googletest CMake template to match the capabilities of the Catch2 template. Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com> Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@mudita.com>
62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
// Copyright (c) 2017-2020, Mudita Sp. z.o.o. All rights reserved.
|
|
// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
|
|
|
|
#pragma once
|
|
|
|
#include "Decoder.hpp"
|
|
#include "dr_flac.h"
|
|
|
|
namespace audio
|
|
{
|
|
|
|
class decoderFLAC : public Decoder
|
|
{
|
|
|
|
public:
|
|
decoderFLAC(const char *fileName);
|
|
|
|
~decoderFLAC();
|
|
|
|
uint32_t decode(uint32_t samplesToRead, int16_t *pcmData) override;
|
|
|
|
void setPosition(float pos) override;
|
|
|
|
private:
|
|
drflac *flac = nullptr;
|
|
|
|
uint32_t totalSamplesCount = 0;
|
|
|
|
/* Data encoded in UTF-8 */
|
|
void flac_parse_text(uint8_t *in, uint32_t taglen, uint32_t datalen, uint8_t *out, uint32_t outlen);
|
|
|
|
// Callback for when data needs to be read from the client.
|
|
//
|
|
// pUserData [in] The user data that was passed to drflac_open() and family.
|
|
// pBufferOut [out] The output buffer.
|
|
// bytesToRead [in] The number of bytes to read.
|
|
//
|
|
// Returns the number of bytes actually read.
|
|
//
|
|
// A return value of less than bytesToRead indicates the end of the stream. Do _not_ return from this callback
|
|
// until either the entire bytesToRead is filled or you have reached the end of the stream.
|
|
static size_t drflac_read(void *pUserData, void *pBufferOut, size_t bytesToRead);
|
|
|
|
// Callback for when data needs to be seeked.
|
|
//
|
|
// pUserData [in] The user data that was passed to drflac_open() and family.
|
|
// offset [in] The number of bytes to move, relative to the origin. Will never be negative.
|
|
// origin [in] The origin of the seek - the current position or the start of the stream.
|
|
//
|
|
// Returns whether or not the seek was successful.
|
|
//
|
|
// The offset will never be negative. Whether or not it is relative to the beginning or current position is
|
|
// determined by the "origin" parameter which will be either drflac_seek_origin_start or
|
|
// drflac_seek_origin_current.
|
|
static drflac_bool32 drflac_seek(void *pUserData, int offset, drflac_seek_origin origin);
|
|
|
|
// Use pMetadata->type to determine which metadata block is being handled and how to read the data.
|
|
static void drflac_meta(void *pUserData, drflac_metadata *pMetadata);
|
|
};
|
|
|
|
} // namespace audio
|