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mpv/libvo/vo_bl.c

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/*
* vo_bl.c - playback using the Blinkenlights UPD protocol (and to files)
*
* UDP socket handling copied from bsender.c part of blib-0.6:
* http://sven.gimp.org/blinkenlights/
* Copyright (c) 2001-2001 The Blinkenlights Crew:
* Sven Neumann <sven@gimp.org>
* Michael Natterer <mitch@gimp.org>
* Daniel Mack <daniel@yoobay.net>
* (these portions are licensed under GNU GPL v2 or "(at your option)
* any later version")
*
* Other stuff: Copyright (C) Rik Snel 2002, License GNU GPL v2
*
* patch from Stefan Schuermans <1stein@schuermans.info>:
* - correction of "maxval" in Blinkenlights UDP protcol
* - new scheme for new HDL
* - new scheme for grayscale in arbitrary size
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "config.h"
#ifndef HAVE_WINSOCK2
#define closesocket close
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#else
#include <winsock2.h>
#endif
#include "video_out.h"
#include "video_out_internal.h"
#include "mp_msg.h"
#include "m_option.h"
#include "fastmemcpy.h"
static vo_info_t info =
{
"Blinkenlights driver: http://www.blinkenlights.de",
"bl",
"Rik Snel <snel@phys.uu.nl>",
""
};
LIBVO_EXTERN (bl)
/* General variables */
static unsigned char *image = NULL;
static unsigned char *tmp = NULL;
static int framenum, yoff, stride;
static char *bl_subdevice = NULL;
static int prevpts = -1;
typedef struct {
char *name; /* filename */
FILE *fp;
int header_written; /* if header was written already */
} bl_file_t;
typedef struct {
char *name; /* hostname */
int port;
int fd; /* file descriptor */
} bl_host_t;
typedef struct {
char *name;
int img_format;
int channels;
int width;
int height;
int bpc; /* bits per component: bpc = 3, channels = 3 => bpp = 24*/
/* file output functions */
int (*init_file)(bl_file_t *file);
void (*write_frame)(bl_file_t *file, unsigned char *i, int duration);
void (*close_file)(bl_file_t *file);
/* network output functions */
int (*init_connection)(bl_host_t *host);
void (*send_frame)(bl_host_t *host);
void (*close_connection)(bl_host_t *host);
} bl_properties_t;
static bl_properties_t *bl = NULL;
/* arbitrary limit because I am too lazy to do proper memory management */
#define BL_MAX_FILES 16
#define BL_MAX_HOSTS 16
static bl_file_t bl_files[BL_MAX_FILES];
static bl_host_t bl_hosts[BL_MAX_HOSTS];
static int no_bl_files = 0;
static int no_bl_hosts = 0;
typedef struct {
uint32_t magic;
uint16_t height;
uint16_t width;
uint16_t channels;
uint16_t maxval;
unsigned char data[0];
} bl_packet_t;
static bl_packet_t *bl_packet = NULL;
static int bl_size;
/* bml output functions */
static int bml_init(bl_file_t *f) {
f->fp = fopen(f->name, "w");
if (!f->fp) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: error opening %s\n", f->name);
return 1;
}
f->header_written = 0;
return 0;
}
static void bml_write_frame(bl_file_t *f, unsigned char *i, int duration) {
int j, k;
if( ! f->header_written )
{
fprintf(f->fp,
"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
"<blm width=\"%d\" height=\"%d\" bits=\"%d\" channels=\"%d\">\n"
" <header>\n"
" <title>Movie autogenerated by MPlayer</title>\n"
" <url>http://www.mplayerhq.hu</url>\n"
" </header>\n", bl->width, bl->height, bl->bpc, bl->channels);
f->header_written = 1;
}
fprintf(f->fp, " <frame duration=\"%d\">\n", duration);
for (j = 0; j < bl->height; j++) {
fprintf(f->fp, " <row>");
for (k = 0; k < bl->width; k++)
fprintf(f->fp, "%02x", *(i + j * bl->width + k));
fprintf(f->fp, "</row>\n");
}
fprintf(f->fp, " </frame>\n");
}
static void bml_close(bl_file_t *f) {
fprintf(f->fp, "</blm>\n");
fclose(f->fp);
}
/* Blinkenlights UDP protocol */
static int udp_init(bl_host_t *h) {
struct sockaddr_in addr;
struct hostent *dest;
dest = gethostbyname(h->name);
if (!dest) {
mp_msg(MSGT_VO, MSGL_ERR,
"unable to resolve host %s\n", h->name);
return 1;
}
h->fd = -1;
addr.sin_family = AF_INET;
addr.sin_port = htons(h->port);
memcpy(&addr.sin_addr.s_addr, dest->h_addr_list[0], dest->h_length);
h->fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (h->fd < 0) {
mp_msg(MSGT_VO, MSGL_ERR,
"couldn't create socket for %s\n", h->name);
return 1;
}
if (connect(h->fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
mp_msg(MSGT_VO, MSGL_ERR, "couldn't connect socket for %s\n",
h->name);
closesocket(h->fd);
return 1;
}
return 0;
}
static void udp_send(bl_host_t *h) {
if (send(h->fd, bl_packet, bl_size, 0) != bl_size)
mp_msg(MSGT_VO, MSGL_ERR, "unable to send to %s\n", h->name);
}
static void udp_close(bl_host_t *h) {
closesocket(h->fd);
}
#define NO_BLS 3
static bl_properties_t bls[NO_BLS] = {
{ "hdl", IMGFMT_YV12, 1, 18, 8, 8,
&bml_init, &bml_write_frame, &bml_close,
&udp_init, &udp_send, &udp_close },
{ "arcade", IMGFMT_YV12, 1, 26, 20, 8,
&bml_init, &bml_write_frame, &bml_close,
&udp_init, &udp_send, &udp_close },
{ "grayscale", IMGFMT_YV12, 1, -1, -1, 8, /* use width and height of movie */
&bml_init, &bml_write_frame, &bml_close,
&udp_init, &udp_send, &udp_close } };
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width,
uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format)
{
void * ptr;
/* adapt size of Blinkenlights UDP stream to size of movie */
if (bl->width < 0 || bl->height < 0) {
if (bl->width < 0) /* use width of movie */
bl->width = width;
if (bl->height < 0) /* use height of movie */
bl->height = height;
/* check for maximum size of UDP packet */
if (12 + bl->width*bl->height*bl->channels > 65507) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: %dx%d-%d does not fit into an UDP packet\n",
bl->width, bl->height, bl->channels);
return 1;
}
/* resize frame and tmp buffers */
bl_size = 12 + bl->width*bl->height*bl->channels;
ptr = realloc(bl_packet, 12 + bl->width*bl->height*3); /* space for header and image data */
if (ptr)
bl_packet = (bl_packet_t*)ptr;
else {
mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
return 1;
}
image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
ptr = realloc(tmp, bl->width*bl->height*3); /* space for image data only */
if (ptr)
tmp = (unsigned char*)ptr;
else {
mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
return 1;
}
}
framenum = 0;
if (format != IMGFMT_YV12) {
mp_msg(MSGT_VO, MSGL_ERR, "vo_bl called with wrong format");
return 1;
}
if (width > bl->width) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: width of movie too large %d > %d\n", width, bl->width);
return 1;
}
if (height > bl->height) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: height of movie too large %d > %d\n", height, bl->height);
return 1;
}
if (!image) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: image should be initialized, internal error\n");
return 1;
}
memset(image, 0, bl->width*bl->height*3); /* blank the image */
mp_msg(MSGT_VO, MSGL_V, "vo_config bl called\n");
return 0;
}
static void draw_osd(void) {
}
static void flip_page (void) {
int i;
if (prevpts >= 0) for (i = 0; i < no_bl_files; i++)
bl->write_frame(&bl_files[i], tmp, (vo_pts - prevpts)/90);
memcpy(tmp, image, bl->width*bl->height*bl->channels);
prevpts = vo_pts;
for (i = 0; i < no_bl_hosts; i++) bl->send_frame(&bl_hosts[i]);
framenum++;
return;
}
static uint32_t draw_frame(uint8_t * src[]) {
return 0;
}
static uint32_t query_format(uint32_t format) {
if (format == bl->img_format)
return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
return 0;
}
static void uninit(void) {
int i;
mp_msg(MSGT_VO, MSGL_V, "bl: uninit called\n");
free(bl_packet);
bl_packet = NULL;
free(bl_subdevice);
bl_subdevice = NULL;
for (i = 0; i < no_bl_files; i++) bl->close_file(&bl_files[i]);
for (i = 0; i < no_bl_hosts; i++) bl->close_connection(&bl_hosts[i]);
no_bl_files = 0;
no_bl_hosts = 0;
bl = NULL;
}
static void check_events(void) {
}
static uint32_t draw_slice(uint8_t *srcimg[], int stride[],
int wf, int hf, int xf, int yf) {
int i, j, w, h, x, y;
uint8_t *dst;
uint8_t *src=srcimg[0];
uint8_t *src1=srcimg[1];
uint8_t *src2=srcimg[2];
w = wf; h = hf; x = xf; y = yf;
dst=image; /* + zr->off_y + zr->image_width*(y/zr->vdec)+x;*/
// copy Y:
for (i = 0; i < h; i++) {
memcpy(dst,src,w);
dst+=bl->width;
src+=stride[0];
}
return 0;
}
static uint32_t preinit(const char *arg) {
char *p, *q;
int end = 0, i;
char txt[256];
if (!arg || strlen(arg) == 0) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must be given, example: -vo bl:arcade:host=localhost:2323\n");
return 1;
}
bl_subdevice = malloc(strlen(arg) + 1);
if (!bl_subdevice) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
return 1;
}
p = bl_subdevice;
strcpy(p, arg);
mp_msg(MSGT_VO, MSGL_V, "bl: preinit called with %s\n", arg);
for (i = 0; i < NO_BLS; i++) {
if (!strncmp(p, bls[i].name, strlen(bls[i].name)))
break;
}
if (i >= NO_BLS) {
txt[0] = 0;
for (i = 0; i < NO_BLS; i++)
if (strlen( txt ) + 4 + strlen( bls[i].name ) + 1 < sizeof(txt))
sprintf( txt + strlen( txt ), "%s%s",
txt[0] == 0 ? "" : i == NO_BLS - 1 ? " or " : ", ", bls[i].name );
mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must start with %s\nbl: i.e. -vo bl:arcade:host=localhost:2323\n", txt);
return 1;
}
bl = &bls[i];
p += strlen(bls[i].name);
if (*p == '\0') {
no_bl_hosts = 1;
bl_hosts[0].name = "localhost";
bl_hosts[0].port = 2323;
mp_msg(MSGT_VO, MSGL_V, "bl: no hosts/files specified, using localhost:2323\n");
end = 1;
} else if (*p != ':') {
mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in subdevice\n");
return 1;
}
p++;
while (!end) {
q = p + 5;
if (!strncmp(p, "file=", 5)) {
if (no_bl_files == BL_MAX_FILES) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of files reached (%d)\n", BL_MAX_FILES);
return 1;
}
p += 5;
while (*q != ',' && *q != '\0') q++;
if (*q == '\0') end = 1;
*q = '\0';
bl_files[no_bl_files].name = p;
mp_msg(MSGT_VO, MSGL_V, "blfile[%d]: %s\n",
no_bl_files, p);
no_bl_files++;
} else if (!strncmp(p, "host=", 5)) {
if (no_bl_hosts == BL_MAX_HOSTS) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of hosts reached (%d)\n", BL_MAX_HOSTS);
return 1;
}
p += 5;
while (*q != ',' && *q != '\0' && *q != ':') q++;
if (*q == ':') {
*q++ = '\0';
bl_hosts[no_bl_hosts].name = p;
bl_hosts[no_bl_hosts].port = atoi(q);
while (*q != ',' && *q != '\0') q++;
if (*q == '\0') end = 1;
} else {
/* use default port */
if (*q == '\0') end = 1;
*q = '\0';
bl_hosts[no_bl_hosts].name = p;
bl_hosts[no_bl_hosts].port = 2323;
}
mp_msg(MSGT_VO, MSGL_V,
"blhost[%d]: %s:%d\n",
no_bl_hosts, p,
bl_hosts[no_bl_hosts].port);
no_bl_hosts++;
} else {
mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in entry %d in subdevice %s, should be a comma seperated\nlist of host=name:port and file=foo.bml\n", no_bl_hosts, no_bl_files, arg);
return 1;
}
p = ++q;
}
if (bl->width >= 0 && bl->height >= 0) { /* size already known */
bl_size = 12 + bl->width*bl->height*bl->channels;
bl_packet = malloc(12 + bl->width*bl->height*3); /* space for header and image data */
image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
tmp = malloc(bl->width*bl->height*3); /* space for image data only */
}
else { /* size unknown yet */
bl_size = 12;
bl_packet = malloc(12 + 3); /* space for header and a pixel */
image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
tmp = malloc(3); /* space for a pixel only */
}
if (!bl_packet || !tmp) {
mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
return 1;
}
bl_packet->magic = htonl(0x23542666);
bl_packet->width = htons(bl->width);
bl_packet->height = htons(bl->height);
bl_packet->channels = htons(bl->channels);
bl_packet->maxval = htons((1 << bl->bpc) - 1);
/* open all files */
for (i = 0; i < no_bl_files; i++)
if (bl->init_file(&bl_files[i])) return 1;
/* open all sockets */
for (i = 0; i < no_bl_hosts; i++)
if (bl->init_connection(&bl_hosts[i])) return 1;
return 0;
}
static uint32_t control(uint32_t request, void *data, ...) {
switch (request) {
case VOCTRL_QUERY_FORMAT:
return query_format(*((uint32_t*)data));
}
return VO_NOTIMPL;
}
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