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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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 2
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2006 Peter Schlaile
*
* Contributor(s):
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/writeframeserver.c
* \ingroup bke
*
* Frameserver
* Makes Blender accessible from TMPGenc directly using VFAPI (you can
* use firefox too ;-)
*/
#ifdef WITH_FRAMESERVER
#include <string.h>
#include <stdio.h>
#if defined(_WIN32)
#include <winsock2.h>
#include <windows.h>
#include <winbase.h>
#include <direct.h>
#else
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netdb.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/un.h>
#include <fcntl.h>
#endif
#include <stdlib.h>
#include "DNA_userdef_types.h"
#include "BLI_utildefines.h"
#include "BKE_writeframeserver.h"
#include "BKE_global.h"
#include "BKE_report.h"
#include "DNA_scene_types.h"
static int sock;
static int connsock;
static int write_ppm;
static int render_width;
static int render_height;
#if defined(_WIN32)
static int startup_socket_system(void)
{
WSADATA wsa;
return (WSAStartup(MAKEWORD(2, 0), &wsa) == 0);
}
static void shutdown_socket_system(void)
{
WSACleanup();
}
static int select_was_interrupted_by_signal(void)
{
return (WSAGetLastError() == WSAEINTR);
}
#else
static int startup_socket_system(void)
{
return 1;
}
static void shutdown_socket_system(void)
{
}
static int select_was_interrupted_by_signal(void)
{
return (errno == EINTR);
}
static int closesocket(int fd)
{
return close(fd);
}
#endif
int BKE_frameserver_start(struct Scene *scene, RenderData *UNUSED(rd), int rectx, int recty, ReportList *reports)
{
struct sockaddr_in addr;
int arg = 1;
(void)scene; /* unused */
if (!startup_socket_system()) {
BKE_report(reports, RPT_ERROR, "Cannot startup socket system");
return 0;
}
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
shutdown_socket_system();
BKE_report(reports, RPT_ERROR, "Cannot open socket");
return 0;
}
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &arg, sizeof(arg));
addr.sin_family = AF_INET;
addr.sin_port = htons(U.frameserverport);
addr.sin_addr.s_addr = INADDR_ANY;
if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
shutdown_socket_system();
BKE_report(reports, RPT_ERROR, "Cannot bind to socket");
return 0;
}
if (listen(sock, SOMAXCONN) < 0) {
shutdown_socket_system();
BKE_report(reports, RPT_ERROR, "Cannot establish listen backlog");
return 0;
}
connsock = -1;
render_width = rectx;
render_height = recty;
return 1;
}
static char index_page[] =
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><head><title>Blender Frameserver</title></head>\n"
"<body><pre>\n"
"<H2>Blender Frameserver</H2>\n"
"<A HREF=info.txt>Render Info</A><br>\n"
"<A HREF=close.txt>Stop Rendering</A><br>\n"
"\n"
"Images can be found here\n"
"\n"
"images/ppm/%d.ppm\n"
"\n"
"</pre></body></html>\n";
static char good_bye[] =
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><head><title>Blender Frameserver</title></head>\n"
"<body><pre>\n"
"Render stopped. Goodbye</pre></body></html>";
static int safe_write(char *s, int tosend)
{
int total = tosend;
do {
int got = send(connsock, s, tosend, 0);
if (got < 0) {
return got;
}
tosend -= got;
s += got;
} while (tosend > 0);
return total;
}
static int safe_puts(char *s)
{
return safe_write(s, strlen(s));
}
static int handle_request(RenderData *rd, char *req)
{
char *p;
char *path;
int pathlen;
if (memcmp(req, "GET ", 4) != 0) {
return -1;
}
p = req + 4;
path = p;
while (*p != ' ' && *p) p++;
*p = 0;
if (strcmp(path, "/index.html") == 0 || strcmp(path, "/") == 0) {
safe_puts(index_page);
return -1;
}
write_ppm = 0;
pathlen = strlen(path);
if (pathlen > 12 && memcmp(path, "/images/ppm/", 12) == 0) {
write_ppm = 1;
return atoi(path + 12);
}
if (strcmp(path, "/info.txt") == 0) {
char buf[4096];
sprintf(buf,
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"start %d\n"
"end %d\n"
"width %d\n"
"height %d\n"
"rate %d\n"
"ratescale %d\n",
rd->sfra,
rd->efra,
render_width,
render_height,
rd->frs_sec,
1
);
safe_puts(buf);
return -1;
}
if (strcmp(path, "/close.txt") == 0) {
safe_puts(good_bye);
G.is_break = true; /* Abort render */
return -1;
}
return -1;
}
int BKE_frameserver_loop(RenderData *rd, ReportList *UNUSED(reports))
{
fd_set readfds;
struct timeval tv;
struct sockaddr_in addr;
int len, rval;
#ifdef FREE_WINDOWS
int socklen;
#else
unsigned int socklen;
#endif
char buf[4096];
if (connsock != -1) {
closesocket(connsock);
connsock = -1;
}
tv.tv_sec = 1;
tv.tv_usec = 0;
FD_ZERO(&readfds);
FD_SET(sock, &readfds);
rval = select(sock + 1, &readfds, NULL, NULL, &tv);
if (rval < 0) {
return -1;
}
if (rval == 0) { /* nothing to be done */
return -1;
}
socklen = sizeof(addr);
if ((connsock = accept(sock, (struct sockaddr *)&addr, &socklen)) < 0) {
return -1;
}
FD_ZERO(&readfds);
FD_SET(connsock, &readfds);
for (;;) {
/* give 10 seconds for telnet testing... */
tv.tv_sec = 10;
tv.tv_usec = 0;
rval = select(connsock + 1, &readfds, NULL, NULL, &tv);
if (rval > 0) {
break;
}
else if (rval == 0) {
return -1;
}
else if (rval < 0) {
if (!select_was_interrupted_by_signal()) {
return -1;
}
}
}
len = recv(connsock, buf, sizeof(buf) - 1, 0);
if (len < 0) {
return -1;
}
buf[len] = 0;
return handle_request(rd, buf);
}
static void serve_ppm(int *pixels, int rectx, int recty)
{
unsigned char *rendered_frame;
unsigned char *row = (unsigned char *) malloc(render_width * 3);
int y;
char header[1024];
sprintf(header,
"HTTP/1.1 200 OK\r\n"
"Content-Type: image/ppm\r\n"
"Connection: close\r\n"
"\r\n"
"P6\n"
"# Creator: blender frameserver v0.0.1\n"
"%d %d\n"
"255\n",
rectx, recty);
safe_puts(header);
rendered_frame = (unsigned char *)pixels;
for (y = recty - 1; y >= 0; y--) {
unsigned char *target = row;
unsigned char *src = rendered_frame + rectx * 4 * y;
unsigned char *end = src + rectx * 4;
while (src != end) {
target[2] = src[2];
target[1] = src[1];
target[0] = src[0];
target += 3;
src += 4;
}
safe_write((char *)row, 3 * rectx);
}
free(row);
closesocket(connsock);
connsock = -1;
}
int BKE_frameserver_append(RenderData *UNUSED(rd), int UNUSED(start_frame), int frame, int *pixels,
int rectx, int recty, ReportList *UNUSED(reports))
{
fprintf(stderr, "Serving frame: %d\n", frame);
if (write_ppm) {
serve_ppm(pixels, rectx, recty);
}
if (connsock != -1) {
closesocket(connsock);
connsock = -1;
}
return 1;
}
void BKE_frameserver_end(void)
{
if (connsock != -1) {
closesocket(connsock);
connsock = -1;
}
closesocket(sock);
shutdown_socket_system();
}
#endif /* WITH_FRAMESERVER */
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