4bd09795a1
With the internal headers now in include/libcamera/internal/, we may have identically named headers in include/libcamera/. Their header guards would clash. Rename the header guards of internal headers to prevent any issue. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
/*
|
|
* Copyright (C) 2019, Google Inc.
|
|
*
|
|
* byte_stream_buffer.h - Byte stream buffer
|
|
*/
|
|
#ifndef __LIBCAMERA_INTERNAL_BYTE_STREAM_BUFFER_H__
|
|
#define __LIBCAMERA_INTERNAL_BYTE_STREAM_BUFFER_H__
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <type_traits>
|
|
|
|
#include <libcamera/span.h>
|
|
|
|
namespace libcamera {
|
|
|
|
class ByteStreamBuffer
|
|
{
|
|
public:
|
|
ByteStreamBuffer(const uint8_t *base, size_t size);
|
|
ByteStreamBuffer(uint8_t *base, size_t size);
|
|
ByteStreamBuffer(ByteStreamBuffer &&other);
|
|
ByteStreamBuffer &operator=(ByteStreamBuffer &&other);
|
|
|
|
const uint8_t *base() const { return base_; }
|
|
uint32_t offset() const { return (write_ ? write_ : read_) - base_; }
|
|
size_t size() const { return size_; }
|
|
bool overflow() const { return overflow_; }
|
|
|
|
ByteStreamBuffer carveOut(size_t size);
|
|
int skip(size_t size);
|
|
|
|
template<typename T>
|
|
int read(T *t)
|
|
{
|
|
return read(reinterpret_cast<uint8_t *>(t), sizeof(*t));
|
|
}
|
|
|
|
template<typename T>
|
|
int read(const Span<T> &data)
|
|
{
|
|
return read(reinterpret_cast<uint8_t *>(data.data()),
|
|
data.size_bytes());
|
|
}
|
|
|
|
template<typename T>
|
|
const std::remove_reference_t<T> *read(size_t count = 1)
|
|
{
|
|
using return_type = const std::remove_reference_t<T> *;
|
|
return reinterpret_cast<return_type>(read(sizeof(T), count));
|
|
}
|
|
|
|
template<typename T>
|
|
int write(const T *t)
|
|
{
|
|
return write(reinterpret_cast<const uint8_t *>(t), sizeof(*t));
|
|
}
|
|
|
|
template<typename T>
|
|
int write(const Span<T> &data)
|
|
{
|
|
return write(reinterpret_cast<const uint8_t *>(data.data()),
|
|
data.size_bytes());
|
|
}
|
|
|
|
private:
|
|
ByteStreamBuffer(const ByteStreamBuffer &other) = delete;
|
|
ByteStreamBuffer &operator=(const ByteStreamBuffer &other) = delete;
|
|
|
|
void setOverflow();
|
|
|
|
int read(uint8_t *data, size_t size);
|
|
const uint8_t *read(size_t size, size_t count);
|
|
int write(const uint8_t *data, size_t size);
|
|
|
|
ByteStreamBuffer *parent_;
|
|
|
|
const uint8_t *base_;
|
|
size_t size_;
|
|
bool overflow_;
|
|
|
|
const uint8_t *read_;
|
|
uint8_t *write_;
|
|
};
|
|
|
|
} /* namespace libcamera */
|
|
|
|
#endif /* __LIBCAMERA_INTERNAL_BYTE_STREAM_BUFFER_H__ */
|