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/********************************************************
* Copyright (C) 2016 All rights reserved.
*
* Filename:myserver_convert.c
* Author :Lematin
* Date :2017-2-17
* Describe:
*
********************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <jpeglib.h>
#include <pthread.h>
#include "myserver_convert.h"
static short radj[] = {
-175, -174, -172, -171, -169, -168, -167, -165,
-164, -163, -161, -160, -159, -157, -156, -154,
-153, -152, -150, -149, -148, -146, -145, -143,
-142, -141, -139, -138, -137, -135, -134, -132,
-131, -130, -128, -127, -126, -124, -123, -121,
-120, -119, -117, -116, -115, -113, -112, -111,
-109, -108, -106, -105, -104, -102, -101, -100,
-98, -97, -95, -94, -93, -91, -90, -89,
-87, -86, -84, -83, -82, -80, -79, -78,
-76, -75, -74, -72, -71, -69, -68, -67,
-65, -64, -63, -61, -60, -58, -57, -56,
-54, -53, -52, -50, -49, -47, -46, -45,
-43, -42, -41, -39, -38, -37, -35, -34,
-32, -31, -30, -28, -27, -26, -24, -23,
-21, -20, -19, -17, -16, -15, -13, -12,
-10, -9, -8, -6, -5, -4, -2, -1,
0, 1, 2, 4, 5, 6, 8, 9,
10, 12, 13, 15, 16, 17, 19, 20,
21, 23, 24, 26, 27, 28, 30, 31,
32, 34, 35, 37, 38, 39, 41, 42,
43, 45, 46, 47, 49, 50, 52, 53,
54, 56, 57, 58, 60, 61, 63, 64,
65, 67, 68, 69, 71, 72, 74, 75,
76, 78, 79, 80, 82, 83, 84, 86,
87, 89, 90, 91, 93, 94, 95, 97,
98, 100, 101, 102, 104, 105, 106, 108,
109, 111, 112, 113, 115, 116, 117, 119,
120, 121, 123, 124, 126, 127, 128, 130,
131, 132, 134, 135, 137, 138, 139, 141,
142, 143, 145, 146, 148, 149, 150, 152,
153, 154, 156, 157, 159, 160, 161, 163,
164, 165, 167, 168, 169, 171, 172, 174,
};
static short gadj1[] = {
-89, -88, -87, -87, -86, -85, -85, -84,
-83, -83, -82, -81, -80, -80, -79, -78,
-78, -77, -76, -76, -75, -74, -73, -73,
-72, -71, -71, -70, -69, -69, -68, -67,
-67, -66, -65, -64, -64, -63, -62, -62,
-61, -60, -60, -59, -58, -57, -57, -56,
-55, -55, -54, -53, -53, -52, -51, -50,
-50, -49, -48, -48, -47, -46, -46, -45,
-44, -43, -43, -42, -41, -41, -40, -39,
-39, -38, -37, -36, -36, -35, -34, -34,
-33, -32, -32, -31, -30, -30, -29, -28,
-27, -27, -26, -25, -25, -24, -23, -23,
-22, -21, -20, -20, -19, -18, -18, -17,
-16, -16, -15, -14, -13, -13, -12, -11,
-11, -10, -9, -9, -8, -7, -6, -6,
-5, -4, -4, -3, -2, -2, -1, 0,
0, 0, 1, 2, 2, 3, 4, 4,
5, 6, 6, 7, 8, 9, 9, 10,
11, 11, 12, 13, 13, 14, 15, 16,
16, 17, 18, 18, 19, 20, 20, 21,
22, 23, 23, 24, 25, 25, 26, 27,
27, 28, 29, 30, 30, 31, 32, 32,
33, 34, 34, 35, 36, 36, 37, 38,
39, 39, 40, 41, 41, 42, 43, 43,
44, 45, 46, 46, 47, 48, 48, 49,
50, 50, 51, 52, 53, 53, 54, 55,
55, 56, 57, 57, 58, 59, 60, 60,
61, 62, 62, 63, 64, 64, 65, 66,
67, 67, 68, 69, 69, 70, 71, 71,
72, 73, 73, 74, 75, 76, 76, 77,
78, 78, 79, 80, 80, 81, 82, 83,
83, 84, 85, 85, 86, 87, 87, 88,
};
static short gadj2[] = {
-43, -42, -42, -42, -41, -41, -41, -40,
-40, -40, -39, -39, -39, -38, -38, -38,
-37, -37, -37, -36, -36, -36, -35, -35,
-35, -34, -34, -34, -33, -33, -33, -32,
-32, -32, -31, -31, -31, -30, -30, -30,
-29, -29, -29, -28, -28, -28, -27, -27,
-27, -26, -26, -25, -25, -25, -24, -24,
-24, -23, -23, -23, -22, -22, -22, -21,
-21, -21, -20, -20, -20, -19, -19, -19,
-18, -18, -18, -17, -17, -17, -16, -16,
-16, -15, -15, -15, -14, -14, -14, -13,
-13, -13, -12, -12, -12, -11, -11, -11,
-10, -10, -10, -9, -9, -9, -8, -8,
-8, -7, -7, -7, -6, -6, -6, -5,
-5, -5, -4, -4, -4, -3, -3, -3,
-2, -2, -2, -1, -1, -1, 0, 0,
0, 0, 0, 1, 1, 1, 2, 2,
2, 3, 3, 3, 4, 4, 4, 5,
5, 5, 6, 6, 6, 7, 7, 7,
8, 8, 8, 9, 9, 9, 10, 10,
10, 11, 11, 11, 12, 12, 12, 13,
13, 13, 14, 14, 14, 15, 15, 15,
16, 16, 16, 17, 17, 17, 18, 18,
18, 19, 19, 19, 20, 20, 20, 21,
21, 21, 22, 22, 22, 23, 23, 23,
24, 24, 24, 25, 25, 25, 26, 26,
27, 27, 27, 28, 28, 28, 29, 29,
29, 30, 30, 30, 31, 31, 31, 32,
32, 32, 33, 33, 33, 34, 34, 34,
35, 35, 35, 36, 36, 36, 37, 37,
37, 38, 38, 38, 39, 39, 39, 40,
40, 40, 41, 41, 41, 42, 42, 42,
};
static short badj[] = {
-221, -220, -218, -216, -214, -213, -211, -209,
-207, -206, -204, -202, -200, -199, -197, -195,
-194, -192, -190, -188, -187, -185, -183, -181,
-180, -178, -176, -174, -173, -171, -169, -168,
-166, -164, -162, -161, -159, -157, -155, -154,
-152, -150, -148, -147, -145, -143, -142, -140,
-138, -136, -135, -133, -131, -129, -128, -126,
-124, -123, -121, -119, -117, -116, -114, -112,
-110, -109, -107, -105, -103, -102, -100, -98,
-97, -95, -93, -91, -90, -88, -86, -84,
-83, -81, -79, -77, -76, -74, -72, -71,
-69, -67, -65, -64, -62, -60, -58, -57,
-55, -53, -51, -50, -48, -46, -45, -43,
-41, -39, -38, -36, -34, -32, -31, -29,
-27, -25, -24, -22, -20, -19, -17, -15,
-13, -12, -10, -8, -6, -5, -3, -1,
0, 1, 3, 5, 6, 8, 10, 12,
13, 15, 17, 19, 20, 22, 24, 25,
27, 29, 31, 32, 34, 36, 38, 39,
41, 43, 45, 46, 48, 50, 51, 53,
55, 57, 58, 60, 62, 64, 65, 67,
69, 71, 72, 74, 76, 77, 79, 81,
83, 84, 86, 88, 90, 91, 93, 95,
97, 98, 100, 102, 103, 105, 107, 109,
110, 112, 114, 116, 117, 119, 121, 123,
124, 126, 128, 129, 131, 133, 135, 136,
138, 140, 142, 143, 145, 147, 148, 150,
152, 154, 155, 157, 159, 161, 162, 164,
166, 168, 169, 171, 173, 174, 176, 178,
180, 181, 183, 185, 187, 188, 190, 192,
194, 195, 197, 199, 200, 202, 204, 206,
207, 209, 211, 213, 214, 216, 218, 220,
};
typedef struct {
struct jpeg_destination_mgr pub;
JOCTET *buffer;
unsigned char *outbuffer;
int outbuffer_size;
unsigned char *outbuffer_cursor;
int *written;
} jpeg_dest_mgr, *jpeg_dest_mgr_ptr;
struct jpeg_mgr_info {
unsigned long written;
JSAMPROW row_pointer[1];
struct jpeg_error_mgr jerr;
struct jpeg_compress_struct cinfo;
};
static struct jpeg_mgr_info jinfo;
void convert_yuv_to_rgb(void *yuv, void *rgb, unsigned int width, unsigned int height, unsigned int bps)
{
unsigned int i;
int y1, y2, u, v;
unsigned char *src = (unsigned char *)yuv;
unsigned char *dst = (unsigned char *)rgb;
unsigned int count = width * height / 2;
switch (bps) {
case 24:
for (i = 0; i < count; i++) {
y1 = *src++;
u = *src++;
y2 = *src++;
v = *src++;
*dst++ = ROUND_0_255(y1 + radj[v]);
*dst++ = ROUND_0_255(y1 - gadj1[u] - gadj2[v]);
*dst++ = ROUND_0_255(y1 + badj[u]);
*dst++ = ROUND_0_255(y2 + radj[v]);
*dst++ = ROUND_0_255(y2 - gadj1[u] - gadj2[v]);
*dst++ = ROUND_0_255(y2 + badj[u]);
}
break;
}
}
void convert_rgb_to_jpg_init(void)
{
memset(&jinfo, 0, sizeof(struct jpeg_mgr_info));
jinfo.cinfo.err = jpeg_std_error(&jinfo.jerr);
jpeg_create_compress(&jinfo.cinfo);
}
int convert_rgb_to_jpg_work(void *rgb, void *jpeg, unsigned int width, unsigned int height, unsigned int bpp, int quality)
{
jinfo.written = width * height * bpp / 3;
jpeg_mem_dest(&jinfo.cinfo, (unsigned char **)&jpeg, &jinfo.written);
jinfo.cinfo.image_width = width;
jinfo.cinfo.image_height = height;
jinfo.cinfo.input_components = bpp / 8;
jinfo.cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&jinfo.cinfo);
jpeg_set_quality(&jinfo.cinfo, quality, TRUE);
jpeg_start_compress(&jinfo.cinfo, TRUE);
while(jinfo.cinfo.next_scanline < height) {
jinfo.row_pointer[0] = (unsigned char *)rgb + jinfo.cinfo.next_scanline * width * bpp / 8;
jpeg_write_scanlines(&jinfo.cinfo, jinfo.row_pointer, 1);
}
jpeg_finish_compress(&jinfo.cinfo);
return (jinfo.written);
}
void convert_rgb_to_jpg_exit(void)
{
jpeg_destroy_compress(&jinfo.cinfo);
}
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