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/*
* Copyright (C) 2013 Paul Kocialkowski
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <malloc.h>
#include <ctype.h>
#define LOG_TAG "exynos_utils"
#include <utils/Log.h>
#include "exynos_camera.h"
int list_head_insert(struct list_head *list, struct list_head *prev,
struct list_head *next)
{
if (list == NULL)
return -EINVAL;
list->prev = prev;
list->next = next;
if(prev != NULL)
prev->next = list;
if(next != NULL)
next->prev = list;
return 0;
}
void list_head_remove(struct list_head *list)
{
if(list == NULL)
return;
if(list->next != NULL)
list->next->prev = list->prev;
if(list->prev != NULL)
list->prev->next = list->next;
}
int exynos_camera_buffer_length(int width, int height, int format)
{
float bpp;
int buffer_length;
switch (format) {
case V4L2_PIX_FMT_RGB32:
bpp = 4.0f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_VYUY:
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_YUV422P:
case V4L2_PIX_FMT_NV16:
case V4L2_PIX_FMT_NV61:
bpp = 2.0f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12T:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
bpp = 1.5f;
buffer_length = EXYNOS_CAMERA_ALIGN(width * height);
buffer_length += EXYNOS_CAMERA_ALIGN(width * height / 2);
break;
case V4L2_PIX_FMT_NV21:
bpp = 1.5f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_JPEG:
case V4L2_PIX_FMT_INTERLEAVED:
default:
buffer_length = -1;
bpp = 0;
break;
}
return buffer_length;
}
void exynos_camera_yuv_planes(int width, int height, int format, int address, int *address_y, int *address_cb, int *address_cr)
{
switch (format) {
case V4L2_PIX_FMT_RGB32:
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_VYUY:
case V4L2_PIX_FMT_YVYU:
if (address_y != NULL)
*address_y = address;
break;
case V4L2_PIX_FMT_YUV420:
if (address_y != NULL)
*address_y = address;
address += EXYNOS_CAMERA_ALIGN(width * height);
if (address_cb != NULL)
*address_cb = address;
address += EXYNOS_CAMERA_ALIGN(width * height / 4);
if (address_cr != NULL)
*address_cr = address;
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12T:
if (address_y != NULL)
*address_y = address;
address += EXYNOS_CAMERA_ALIGN(width * height);
if (address_cb != NULL)
*address_cb = address;
if (address_cr != NULL)
*address_cr = address;
break;
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV16:
case V4L2_PIX_FMT_NV61:
default:
if (address_y != NULL)
*address_y = address;
address += width * height;
if (address_cb != NULL)
*address_cb = address;
if (address_cr != NULL)
*address_cr = address;
break;
}
}
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