43 void draw_rgba(char *buffer, int width, int height) {  in draw_rgba()  argument
45        for (int j = 0; j < width/4; j++) {  in draw_rgba()
46            buffer[(i*width*4) + j*4 + 0] = 0xff;   //R  in draw_rgba()
47            buffer[(i*width*4) + j*4 + 1] = 0x00;   //G  in draw_rgba()
48            buffer[(i*width*4) + j*4 + 2] = 0x00;   //B  in draw_rgba()
49            buffer[(i*width*4) + j*4 + 3] = 0xff;   //A  in draw_rgba()
51        for (int j = width/4; j < width/4*2; j++) {  in draw_rgba()
52            buffer[(i*width*4) + j*4 + 0] = 0x00;  in draw_rgba()
53            buffer[(i*width*4) + j*4 + 1] = 0xff;  in draw_rgba()
54            buffer[(i*width*4) + j*4 + 2] = 0x00;  in draw_rgba()
55            buffer[(i*width*4) + j*4 + 3] = 0xff;  in draw_rgba()
57        for (int j = width/4*2; j < width/4*3; j++) {  in draw_rgba()
58            buffer[(i*width*4) + j*4 + 0] = 0x00;  in draw_rgba()
59            buffer[(i*width*4) + j*4 + 1] = 0x00;  in draw_rgba()
60            buffer[(i*width*4) + j*4 + 2] = 0xff;  in draw_rgba()
61            buffer[(i*width*4) + j*4 + 3] = 0xff;  in draw_rgba()
63        for (int j = width/4*3; j < width; j++) {  in draw_rgba()
64            buffer[(i*width*4) + j*4 + 0] = 0xff;  in draw_rgba()
65            buffer[(i*width*4) + j*4 + 1] = 0xff;  in draw_rgba()
66            buffer[(i*width*4) + j*4 + 2] = 0xff;  in draw_rgba()
67            buffer[(i*width*4) + j*4 + 3] = 0xff;  in draw_rgba()
72 void draw_YUV420(char *buffer, int width, int height) {  in draw_YUV420()  argument
74     memset(buffer, 0xa8, width * height / 2);  in draw_YUV420()
75     memset(buffer + width * height / 2, 0x54, width * height / 2);  in draw_YUV420()
77     memset(buffer + width * height, 0x80, width * height / 4);  in draw_YUV420()
78     memset(buffer + (int)(width * height * 1.25), 0x30, width * height / 4);  in draw_YUV420()
81 void draw_YUV422(char *buffer, int width, int height) {  in draw_YUV422()  argument
83     memset(buffer, 0xa8, width * height / 2);  in draw_YUV422()
84     memset(buffer + width * height / 2, 0x54, width * height / 2);  in draw_YUV422()
86     memset(buffer + width * height, 0x80, width * height / 2);  in draw_YUV422()
87     memset(buffer + (int)(width * height * 1.5), 0x30, width * height / 2);  in draw_YUV422()
90 void draw_gray256(char *buffer, int width, int height) {  in draw_gray256()  argument
92        for (int j = 0; j < width/4; j++) {  in draw_gray256()
93             buffer[(i*width*4) + j*4] = 0xa8;  in draw_gray256()
95        for (int j = width/4; j < width/4*2; j++) {  in draw_gray256()
96            buffer[(i*width*4) + j*4] = 0x80;  in draw_gray256()
98        for (int j = width/4*2; j < width/4*3; j++) {  in draw_gray256()
99            buffer[(i*width*4) + j*4] = 0x54;  in draw_gray256()
101        for (int j = width/4*3; j < width; j++) {  in draw_gray256()
102            buffer[(i*width*4) + j*4] = 0x30;  in draw_gray256()