void framebuffer_service(int fd, void *cookie)
{
struct fbinfo fbinfo;
unsigned int i;
char buf[640];
int fd_screencap,fb;
int w, h, f;
int fds[2];
if (pipe(fds) < 0) goto done;
pid_t pid = fork();
if (pid < 0) goto done;
if (pid == 0) {
dup2(fds[1], STDOUT_FILENO);
close(fds[0]);
close(fds[1]);
#if (0 == LCDC_CAPTURE)
const char* command = "screencap";
const char *args[2] = {command, NULL};
execvp(command, (char**)args);
exit(1);
#else // #if (LCDC_CAPTURE)
if ((fb=open("/system/bin/lcdc_screen_cap",O_RDONLY)) >= 0){
close(fb);
const char * command = "lcdc_screen_cap";
const char *args[2] = {command, NULL};
execvp(command, (char**)args);
exit(1);
}
else{
lcdc_screen_cap();
exit(0);
}
#endif
}
fd_screencap = fds[0];
/* read w, h & format */
if(readx(fd_screencap, &w, 4)) goto error;
if(readx(fd_screencap, &h, 4)) goto error;
if(readx(fd_screencap, &f, 4)) goto error;
fbinfo.version = DDMS_RAWIMAGE_VERSION;
/* see hardware/hardware.h */
switch (f) {
case 1: /* RGBA_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 8;
break;
case 2: /* RGBX_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 0;
break;
case 3: /* RGB_888 */
fbinfo.bpp = 24;
fbinfo.size = w * h * 3;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 0;
break;
case 4: /* RGB_565 */
fbinfo.bpp = 16;
fbinfo.size = w * h * 2;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 11;
fbinfo.red_length = 5;
fbinfo.green_offset = 5;
fbinfo.green_length = 6;
fbinfo.blue_offset = 0;
fbinfo.blue_length = 5;
fbinfo.alpha_offset = 0;
fbinfo.alpha_length = 0;
break;
case 5: /* BGRA_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 16;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 0;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 8;
break;
default:
goto done;
}
/* write header */
if(writex(fd, &fbinfo, sizeof(fbinfo))) goto error;
/* write data */
for(i = 0; i < fbinfo.size; i += sizeof(buf)) {
if ((fbinfo.size - i) < sizeof(buf)) {
break;
}
if(readx(fd_screencap, buf, sizeof(buf))) goto error;
if(writex(fd, buf, sizeof(buf))) goto error;
}
if(readx(fd_screencap, buf, fbinfo.size % sizeof(buf))) goto error;
if(writex(fd, buf, fbinfo.size % sizeof(buf))) goto error;
done:
TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));
goto close_fd;
error:
/*Alternatively, closes fds should also assure lcdc_screen_cap not block by wrting pipe*/
if(0 == kill(pid, SIGTERM)){
XLOGI("[ADB] Sent SIGTERM to process %d\n", pid);
}else{
XLOGE("[ADB] Failed to send SIGTERM to process %d, errno=%s\n",pid, strerror(errno));
/*Note that even parent process failed to send signal,
child process(lcdc_screen_cap) should still exit normally*/
}
goto close_fd;
close_fd:
close(fds[0]);
close(fds[1]);
close(fd);
}
void framebuffer_service(int fd, void *cookie)
{
struct fbinfo fbinfo;
unsigned int i;
char buf[640];
int fd_screencap,fb;
int w, h, f;
int fds[2];
if (pipe(fds) < 0) goto done;
pid_t pid = fork();
if (pid < 0) goto done;
if (pid == 0) {
dup2(fds[1], STDOUT_FILENO);
close(fds[0]);
close(fds[1]);
#if (0 == LCDC_CAPTURE)
const char* command = "screencap";
const char *args[2] = {command, NULL};
execvp(command, (char**)args);
exit(1);
#else // #if (LCDC_CAPTURE)
if ((fb=open("/system/bin/lcdc_screen_cap",O_RDONLY)) >= 0){
close(fb);
const char * command = "lcdc_screen_cap";
const char *args[2] = {command, NULL};
execvp(command, (char**)args);
exit(1);
}
else{
lcdc_screen_cap();
exit(0);
}
#endif
}
fd_screencap = fds[0];
/* read w, h & format */
if(readx(fd_screencap, &w, 4)) goto done;
if(readx(fd_screencap, &h, 4)) goto done;
if(readx(fd_screencap, &f, 4)) goto done;
fbinfo.version = DDMS_RAWIMAGE_VERSION;
/* see hardware/hardware.h */
switch (f) {
case 1: /* RGBA_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 8;
break;
case 2: /* RGBX_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 0;
break;
case 3: /* RGB_888 */
fbinfo.bpp = 24;
fbinfo.size = w * h * 3;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 0;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 16;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 0;
break;
case 4: /* RGB_565 */
fbinfo.bpp = 16;
fbinfo.size = w * h * 2;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 11;
fbinfo.red_length = 5;
fbinfo.green_offset = 5;
fbinfo.green_length = 6;
fbinfo.blue_offset = 0;
fbinfo.blue_length = 5;
fbinfo.alpha_offset = 0;
fbinfo.alpha_length = 0;
break;
case 5: /* BGRA_8888 */
fbinfo.bpp = 32;
fbinfo.size = w * h * 4;
fbinfo.width = w;
fbinfo.height = h;
fbinfo.red_offset = 16;
fbinfo.red_length = 8;
fbinfo.green_offset = 8;
fbinfo.green_length = 8;
fbinfo.blue_offset = 0;
fbinfo.blue_length = 8;
fbinfo.alpha_offset = 24;
fbinfo.alpha_length = 8;
break;
default:
goto done;
}
/* write header */
if(writex(fd, &fbinfo, sizeof(fbinfo))) goto done;
/* write data */
for(i = 0; i < fbinfo.size; i += sizeof(buf)) {
if(readx(fd_screencap, buf, sizeof(buf))) goto done;
if(writex(fd, buf, sizeof(buf))) goto done;
}
if(readx(fd_screencap, buf, fbinfo.size % sizeof(buf))) goto done;
if(writex(fd, buf, fbinfo.size % sizeof(buf))) goto done;
done:
TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));
close(fds[0]);
close(fds[1]);
close(fd);
}
