Contributors: 2
Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
Radoslav Tsvetkov |
147 |
54.65% |
2 |
25.00% |
Todor Tomov |
122 |
45.35% |
6 |
75.00% |
Total |
269 |
|
8 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* camss-format.c
*
* Qualcomm MSM Camera Subsystem - Format helpers
*
* Copyright (c) 2023, The Linux Foundation. All rights reserved.
* Copyright (c) 2023 Qualcomm Technologies, Inc.
*/
#include <linux/bug.h>
#include <linux/errno.h>
#include "camss-format.h"
/*
* camss_format_get_bpp - Map media bus format to bits per pixel
* @formats: supported media bus formats array
* @nformats: size of @formats array
* @code: media bus format code
*
* Return number of bits per pixel
*/
u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code)
{
unsigned int i;
for (i = 0; i < nformats; i++)
if (code == formats[i].code)
return formats[i].mbus_bpp;
WARN(1, "Unknown format\n");
return formats[0].mbus_bpp;
}
/*
* camss_format_find_code - Find a format code in an array
* @code: a pointer to media bus format codes array
* @n_code: size of @code array
* @index: index of code in the array
* @req_code: required code
*
* Return media bus format code
*/
u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code)
{
unsigned int i;
if (!req_code && index >= n_code)
return 0;
for (i = 0; i < n_code; i++) {
if (req_code) {
if (req_code == code[i])
return req_code;
} else {
if (i == index)
return code[i];
}
}
return code[0];
}
/*
* camss_format_find_format - Find a format in an array
* @code: media bus format code
* @pixelformat: V4L2 pixel format FCC identifier
* @formats: a pointer to formats array
* @nformats: size of @formats array
*
* Return index of a format or a negative error code otherwise
*/
int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
unsigned int nformats)
{
unsigned int i;
for (i = 0; i < nformats; i++) {
if (formats[i].code == code &&
formats[i].pixelformat == pixelformat)
return i;
}
for (i = 0; i < nformats; i++) {
if (formats[i].code == code)
return i;
}
return -EINVAL;
}