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/*
* Copyright (C) 2013 DENSO CORPORATION
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "bitmap.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <stdbool.h>
#include <arpa/inet.h>
#include "ivi-wm-client-protocol.h"
#include <endian.h>
struct __attribute__ ((__packed__)) BITMAPFILEHEADER {
char bfType[2];
uint32_t bfSize;
uint16_t bfReserved1;
uint16_t bfReserved2;
uint32_t bfOffBits;
};
struct __attribute__ ((__packed__)) BITMAPINFOHEADER {
uint32_t biSize;
uint32_t biWidth;
uint32_t biHeight;
uint16_t biPlanes;
uint16_t biBitCount;
uint32_t biCompression;
uint32_t biSizeImage;
uint32_t biXPixPerMeter;
uint32_t biYPixPerMeter;
uint32_t biClrUsed;
uint32_t biClrImporant;
};
static void
create_file_header(struct BITMAPFILEHEADER *file_header, int32_t image_size)
{
file_header->bfType[0] = 'B';
file_header->bfType[1] = 'M';
file_header->bfSize = htole32(sizeof(struct BITMAPFILEHEADER) +
sizeof(struct BITMAPINFOHEADER) +
image_size);
file_header->bfOffBits = htole32(sizeof(struct BITMAPFILEHEADER) +
sizeof(struct BITMAPINFOHEADER));
}
static void
create_info_header(struct BITMAPINFOHEADER *info_header, int32_t image_size, int32_t width, int32_t height, int16_t bpp)
{
info_header->biSize = htole32(sizeof(struct BITMAPINFOHEADER));
info_header->biWidth = htole32(width);
info_header->biHeight = htole32(height);
info_header->biPlanes = htole16(1);
info_header->biBitCount = htole16(bpp);
info_header->biSizeImage = htole32(image_size);
}
static int
write_bitmap(const char *filename,
const struct BITMAPFILEHEADER *file_header,
const struct BITMAPINFOHEADER *info_header,
const char *buffer)
{
FILE *fp = fopen(filename, "w");
if (fp == NULL) {
return -1;
}
fwrite(file_header, sizeof(struct BITMAPFILEHEADER), 1, fp);
fwrite(info_header, sizeof(struct BITMAPINFOHEADER), 1, fp);
fwrite(buffer, info_header->biSizeImage, 1, fp);
fclose(fp);
return 0;
}
int
save_as_bitmap(const char *filename,
const char *buffer,
int32_t width,
int32_t height,
uint32_t format)
{
int32_t image_stride = 0;
int32_t image_size = 0;
char *image_buffer = NULL;
int32_t row = 0;
int32_t col = 0;
int32_t image_offset = 0;
int32_t offset = 0;
int32_t i = 0;
int32_t j = 0;
int bytes_per_pixel;
bool flip_order;
bool has_alpha;
if ((filename == NULL) || (buffer == NULL)) {
return -1;
}
switch (format) {
case WL_SHM_FORMAT_ARGB8888:
flip_order = true;
has_alpha = true;
break;
case WL_SHM_FORMAT_XRGB8888:
flip_order = true;
has_alpha = false;
break;
case WL_SHM_FORMAT_ABGR8888:
flip_order = false;
has_alpha = true;
break;
case WL_SHM_FORMAT_XBGR8888:
flip_order = false;
has_alpha = false;
break;
default:
fprintf(stderr, "unsupported pixelformat 0x%x\n", format);
return -1;
}
bytes_per_pixel = has_alpha ? 4 : 3;
image_stride = (((width * bytes_per_pixel) + 3) & ~3);
image_size = image_stride * height;
image_buffer = malloc(image_size);
if (image_buffer == NULL) {
fprintf(stderr, "failed to allocate %d bytes for image buffer: %m\n",
image_size);
return -1;
}
// Store the image in image_buffer in the follwing order B, G, R, [A](B at the lowest address)
for (row = 0; row < height; ++row) {
for (col = 0; col < width; ++col) {
offset = (height - row - 1) * width + col;
uint32_t pixel = htonl(((uint32_t*)buffer)[offset]);
char * pixel_p = (char*) &pixel;
image_offset = row * image_stride + col * bytes_per_pixel;
for (i = 0; i < 3; ++i) {
j = flip_order ? 2 - i : i;
image_buffer[image_offset + i] = pixel_p[1 + j];
}
if (has_alpha) {
image_buffer[image_offset + 3] = pixel_p[0];
}
}
}
struct BITMAPFILEHEADER file_header = {};
struct BITMAPINFOHEADER info_header = {};
create_file_header(&file_header, image_size);
create_info_header(&info_header, image_size, width, height, bytes_per_pixel * 8);
if (write_bitmap(filename, &file_header, &info_header, image_buffer) != 0) {
free(image_buffer);
return -1;
}
free(image_buffer);
return 0;
}
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