summaryrefslogtreecommitdiff
path: root/src/qcam/viewfinder.h
blob: e33dc4525224e88e2942c325b8240753c737b892 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * viewfinder.h - qcam - Viewfinder base class
 */
#ifndef __QCAM_VIEWFINDER_H__
#define __QCAM_VIEWFINDER_H__

#include <QImage>
#include <QList>
#include <QSize>

#include <libcamera/buffer.h>
#include <libcamera/formats.h>

struct MappedBuffer {
	void *memory;
	size_t size;
};

class ViewFinder
{
public:
	virtual ~ViewFinder() = default;

	virtual const QList<libcamera::PixelFormat> &nativeFormats() const = 0;

	virtual int setFormat(const libcamera::PixelFormat &format, const QSize &size) = 0;
	virtual void render(libcamera::FrameBuffer *buffer, MappedBuffer *map) = 0;
	virtual void stop() = 0;

	virtual QImage getCurrentImage() = 0;
};

#endif /* __QCAM_VIEWFINDER_H__ */
span> *argv[]) { int in_fd; int out_fd; int ret; if (argc != 3) { usage(argv[0]); return 1; } in_fd = open(argv[1], O_RDONLY); if (in_fd == -1) { fprintf(stderr, "Failed to open input file '%s': %s\n", argv[1], strerror(errno)); return 1; } out_fd = open(argv[2], O_WRONLY | O_TRUNC | O_CREAT, 0644); if (out_fd == -1) { fprintf(stderr, "Failed to open output file '%s': %s\n", argv[2], strerror(errno)); return 1; } while (1) { uint8_t in_data[32]; uint8_t out_data[50]; unsigned int i; ret = read(in_fd, in_data, 32); if (ret == -1) { fprintf(stderr, "Failed to read input data: %s\n", strerror(errno)); goto done; } if (ret < 32) { if (ret != 0) fprintf(stderr, "%u bytes of stray data at end of input\n", ret); break; } for (i = 0; i < 25; ++i) { unsigned int index = (i * 10) / 8; unsigned int lsb_shift = (i * 10) % 8; unsigned int msb_shift = 8 - lsb_shift; uint16_t pixel; pixel = ((in_data[index+1] << msb_shift) & 0x3ff) | ((in_data[index+0] >> lsb_shift) & 0x3ff); out_data[i*2+0] = (pixel >> 0) & 0xff; out_data[i*2+1] = (pixel >> 8) & 0xff; } ret = write(out_fd, out_data, 50); if (ret < -1) { fprintf(stderr, "Failed to write output data: %s\n", strerror(errno)); goto done; } } done: close(in_fd); close(out_fd); return ret ? 1 : 0; }