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mpv/vobsub.c

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/*
* Some code freely inspired from VobSub <URL:http://vobsub.edensrising.com>,
* with kind permission from Gabest <gabest@freemail.hu>
*/
/* #define HAVE_GETLINE */
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "config.h"
#include "version.h"
#include "vobsub.h"
#include "libvo/video_out.h"
#include "spudec.h"
#include "mp_msg.h"
extern int vobsub_id;
extern int verbose;
#ifdef HAVE_GETLINE
extern ssize_t getline(char **, size_t *, FILE *);
#else
/* FIXME This should go into a general purpose library or even a
separate file. */
static ssize_t
getline (char **lineptr, size_t *n, FILE *stream)
{
size_t res = 0;
int c;
if (*lineptr == NULL) {
*lineptr = malloc(4096);
if (*lineptr)
*n = 4096;
}
else if (*n == 0) {
char *tmp = realloc(*lineptr, 4096);
if (tmp) {
*lineptr = tmp;
*n = 4096;
}
}
if (*lineptr == NULL || *n == 0)
return -1;
for (c = fgetc(stream); c != EOF; c = fgetc(stream)) {
if (res + 1 >= *n) {
char *tmp = realloc(*lineptr, *n * 2);
if (tmp == NULL)
return -1;
*lineptr = tmp;
*n *= 2;
}
(*lineptr)[res++] = c;
if (c == '\n') {
(*lineptr)[res] = 0;
return res;
}
}
if (res == 0)
return -1;
(*lineptr)[res] = 0;
return res;
}
#endif
/**********************************************************************
* MPEG parsing
**********************************************************************/
typedef struct {
FILE *stream;
unsigned int pts;
int aid;
unsigned char *packet;
unsigned int packet_reserve;
unsigned int packet_size;
} mpeg_t;
static mpeg_t *
mpeg_open(const char *filename)
{
mpeg_t *res = malloc(sizeof(mpeg_t));
int err = res == NULL;
if (!err) {
res->pts = 0;
res->aid = -1;
res->packet = NULL;
res->packet_size = 0;
res->packet_reserve = 0;
res->stream = fopen(filename, "r");
err = res->stream == NULL;
if (err)
perror("fopen Vobsub file failed");
if (err)
free(res);
}
return err ? NULL : res;
}
static void
mpeg_free(mpeg_t *mpeg)
{
if (mpeg->packet)
free(mpeg->packet);
if (mpeg->stream)
fclose(mpeg->stream);
free(mpeg);
}
static int
mpeg_eof(mpeg_t *mpeg)
{
return feof(mpeg->stream);
}
static off_t
mpeg_tell(mpeg_t *mpeg)
{
return ftell(mpeg->stream);
}
static int
mpeg_run(mpeg_t *mpeg)
{
unsigned int len, idx, version;
int c;
/* Goto start of a packet, it starts with 0x000001?? */
const unsigned char wanted[] = { 0, 0, 1 };
unsigned char buf[5];
mpeg->aid = -1;
mpeg->packet_size = 0;
if (fread(buf, 4, 1, mpeg->stream) != 1)
return -1;
while (memcmp(buf, wanted, sizeof(wanted)) != 0) {
c = getc(mpeg->stream);
if (c < 0)
return -1;
memmove(buf, buf + 1, 3);
buf[3] = c;
}
switch (buf[3]) {
case 0xb9: /* System End Code */
break;
case 0xba: /* Packet start code */
c = getc(mpeg->stream);
if (c < 0)
return -1;
if ((c & 0xc0) == 0x40)
version = 4;
else if ((c & 0xf0) == 0x20)
version = 2;
else {
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Unsupported MPEG version: 0x%02x", c);
return -1;
}
if (version == 4) {
if (fseek(mpeg->stream, 9, SEEK_CUR))
return -1;
}
else if (version == 2) {
if (fseek(mpeg->stream, 7, SEEK_CUR))
return -1;
}
else
abort();
break;
case 0xbd: /* packet */
if (fread(buf, 2, 1, mpeg->stream) != 1)
return -1;
len = buf[0] << 8 | buf[1];
idx = mpeg_tell(mpeg);
c = getc(mpeg->stream);
if (c < 0)
return -1;
if ((c & 0xC0) == 0x40) { /* skip STD scale & size */
if (getc(mpeg->stream) < 0)
return -1;
c = getc(mpeg->stream);
if (c < 0)
return -1;
}
if ((c & 0xf0) == 0x20) { /* System-1 stream timestamp */
/* Do we need this? */
abort();
}
else if ((c & 0xf0) == 0x30) {
/* Do we need this? */
abort();
}
else if ((c & 0xc0) == 0x80) { /* System-2 (.VOB) stream */
unsigned int pts_flags, hdrlen, dataidx;
c = getc(mpeg->stream);
if (c < 0)
return -1;
pts_flags = c;
c = getc(mpeg->stream);
if (c < 0)
return -1;
hdrlen = c;
dataidx = mpeg_tell(mpeg) + hdrlen;
if (dataidx > idx + len) {
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Invalid header length: %d (total length: %d, idx: %d, dataidx: %d)\n",
hdrlen, len, idx, dataidx);
return -1;
}
if ((pts_flags & 0xc0) == 0x80) {
if (fread(buf, 5, 1, mpeg->stream) != 1)
return -1;
if (!(((buf[0] & 0xf0) == 0x20) && (buf[0] & 1) && (buf[2] & 1) && (buf[4] & 1))) {
mp_msg(MSGT_VOBSUB,MSGL_ERR, "vobsub PTS error: 0x%02x %02x%02x %02x%02x \n",
buf[0], buf[1], buf[2], buf[3], buf[4]);
mpeg->pts = 0;
}
else
mpeg->pts = ((buf[0] & 0x0e) << 29 | buf[1] << 22 | (buf[2] & 0xfe) << 14
| buf[3] << 7 | (buf[4] >> 1));
}
else /* if ((pts_flags & 0xc0) == 0xc0) */ {
/* what's this? */
/* abort(); */
}
fseek(mpeg->stream, dataidx, SEEK_SET);
mpeg->aid = getc(mpeg->stream);
if (mpeg->aid < 0) {
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Bogus aid %d\n", mpeg->aid);
return -1;
}
mpeg->packet_size = len - ((unsigned int) mpeg_tell(mpeg) - idx);
if (mpeg->packet_reserve < mpeg->packet_size) {
if (mpeg->packet)
free(mpeg->packet);
mpeg->packet = malloc(mpeg->packet_size);
if (mpeg->packet)
mpeg->packet_reserve = mpeg->packet_size;
}
if (mpeg->packet == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_FATAL,"malloc failure");
mpeg->packet_reserve = 0;
mpeg->packet_size = 0;
return -1;
}
if (fread(mpeg->packet, mpeg->packet_size, 1, mpeg->stream) != 1) {
mp_msg(MSGT_VOBSUB,MSGL_ERR,"fread failure");
mpeg->packet_size = 0;
return -1;
}
idx = len;
}
break;
case 0xbe: /* Padding */
if (fread(buf, 2, 1, mpeg->stream) != 1)
return -1;
len = buf[0] << 8 | buf[1];
if (len > 0 && fseek(mpeg->stream, len, SEEK_CUR))
return -1;
break;
default:
if (0xc0 <= buf[3] && buf[3] < 0xf0) {
/* MPEG audio or video */
if (fread(buf, 2, 1, mpeg->stream) != 1)
return -1;
len = buf[0] << 8 | buf[1];
if (len > 0 && fseek(mpeg->stream, len, SEEK_CUR))
return -1;
}
else {
mp_msg(MSGT_VOBSUB,MSGL_ERR,"unknown header 0x%02X%02X%02X%02X\n",
buf[0], buf[1], buf[2], buf[3]);
return -1;
}
}
return 0;
}
/**********************************************************************
* Packet queue
**********************************************************************/
typedef struct {
unsigned int pts100;
off_t filepos;
unsigned int size;
unsigned char *data;
} packet_t;
typedef struct {
char *id;
packet_t *packets;
unsigned int packets_reserve;
unsigned int packets_size;
unsigned int current_index;
} packet_queue_t;
static void
packet_construct(packet_t *pkt)
{
pkt->pts100 = 0;
pkt->filepos = 0;
pkt->size = 0;
pkt->data = NULL;
}
static void
packet_destroy(packet_t *pkt)
{
if (pkt->data)
free(pkt->data);
}
static void
packet_queue_construct(packet_queue_t *queue)
{
queue->id = NULL;
queue->packets = NULL;
queue->packets_reserve = 0;
queue->packets_size = 0;
queue->current_index = 0;
}
static void
packet_queue_destroy(packet_queue_t *queue)
{
if (queue->packets) {
while (queue->packets_size--)
packet_destroy(queue->packets + queue->packets_size);
free(queue->packets);
}
return;
}
/* Make sure there is enough room for needed_size packets in the
packet queue. */
static int
packet_queue_ensure(packet_queue_t *queue, unsigned int needed_size)
{
if (queue->packets_reserve < needed_size) {
if (queue->packets) {
packet_t *tmp = realloc(queue->packets, 2 * queue->packets_reserve * sizeof(packet_t));
if (tmp == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_FATAL,"realloc failure");
return -1;
}
queue->packets = tmp;
queue->packets_reserve *= 2;
}
else {
queue->packets = malloc(sizeof(packet_t));
if (queue->packets == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_FATAL,"malloc failure");
return -1;
}
queue->packets_reserve = 1;
}
}
return 0;
}
/* add one more packet */
static int
packet_queue_grow(packet_queue_t *queue)
{
if (packet_queue_ensure(queue, queue->packets_size + 1) < 0)
return -1;
packet_construct(queue->packets + queue->packets_size);
++queue->packets_size;
return 0;
}
/* insert a new packet, duplicating pts from the current one */
static int
packet_queue_insert(packet_queue_t *queue)
{
packet_t *pkts;
if (packet_queue_ensure(queue, queue->packets_size + 1) < 0)
return -1;
/* XXX packet_size does not reflect the real thing here, it will be updated a bit later */
memmove(queue->packets + queue->current_index + 2,
queue->packets + queue->current_index + 1,
sizeof(packet_t) * (queue->packets_size - queue->current_index - 1));
pkts = queue->packets + queue->current_index;
++queue->packets_size;
++queue->current_index;
packet_construct(pkts + 1);
pkts[1].pts100 = pkts[0].pts100;
pkts[1].filepos = pkts[0].filepos;
return 0;
}
/**********************************************************************
* Vobsub
**********************************************************************/
typedef struct {
unsigned int palette[16];
unsigned int cuspal[4];
int delay;
unsigned int custom;
unsigned int have_palette;
unsigned int orig_frame_width, orig_frame_height;
unsigned int origin_x, origin_y;
/* index */
packet_queue_t *spu_streams;
unsigned int spu_streams_size;
unsigned int spu_streams_current;
} vobsub_t;
/* Make sure that the spu stream idx exists. */
static int
vobsub_ensure_spu_stream(vobsub_t *vob, unsigned int index)
{
if (index >= vob->spu_streams_size) {
/* This is a new stream */
if (vob->spu_streams) {
packet_queue_t *tmp = realloc(vob->spu_streams, (index + 1) * sizeof(packet_queue_t));
if (tmp == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_ERR,"vobsub_ensure_spu_stream: realloc failure");
return -1;
}
vob->spu_streams = tmp;
}
else {
vob->spu_streams = malloc((index + 1) * sizeof(packet_queue_t));
if (vob->spu_streams == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_ERR,"vobsub_ensure_spu_stream: malloc failure");
return -1;
}
}
while (vob->spu_streams_size <= index) {
packet_queue_construct(vob->spu_streams + vob->spu_streams_size);
++vob->spu_streams_size;
}
}
return 0;
}
static int
vobsub_add_id(vobsub_t *vob, const char *id, size_t idlen, const unsigned int index)
{
if (vobsub_ensure_spu_stream(vob, index) < 0)
return -1;
if (id && idlen) {
if (vob->spu_streams[index].id)
free(vob->spu_streams[index].id);
vob->spu_streams[index].id = malloc(idlen + 1);
if (vob->spu_streams[index].id == NULL) {
mp_msg(MSGT_VOBSUB,MSGL_FATAL,"vobsub_add_id: malloc failure");
return -1;
}
vob->spu_streams[index].id[idlen] = 0;
memcpy(vob->spu_streams[index].id, id, idlen);
}
vob->spu_streams_current = index;
if (verbose)
mp_msg(MSGT_VOBSUB,MSGL_V,"[vobsub] subtitle (vobsubid): %d language %s\n",
index, vob->spu_streams[index].id);
return 0;
}
static int
vobsub_add_timestamp(vobsub_t *vob, off_t filepos, unsigned int ms)
{
packet_queue_t *queue;
packet_t *pkt;
if (vob->spu_streams == 0) {
mp_msg(MSGT_VOBSUB,MSGL_WARN,"[vobsub] warning, binning some index entries. Check your index file\n");
return -1;
}
queue = vob->spu_streams + vob->spu_streams_current;
if (packet_queue_grow(queue) >= 0) {
pkt = queue->packets + (queue->packets_size - 1);
pkt->filepos = filepos;
pkt->pts100 = ms * 90;
return 0;
}
return -1;
}
static int
vobsub_parse_id(vobsub_t *vob, const char *line)
{
// id: xx, index: n
size_t idlen;
const char *p, *q;
p = line;
while (isspace(*p))
++p;
q = p;
while (isalpha(*q))
++q;
idlen = q - p;
if (idlen == 0)
return -1;
++q;
while (isspace(*q))
++q;
if (strncmp("index:", q, 6))
return -1;
q += 6;
while (isspace(*q))
++q;
if (!isdigit(*q))
return -1;
return vobsub_add_id(vob, p, idlen, atoi(q));
}
static int
vobsub_parse_timestamp(vobsub_t *vob, const char *line)
{
// timestamp: HH:MM:SS.mmm, filepos: 0nnnnnnnnn
const char *p;
int h, m, s, ms;
off_t filepos;
while (isspace(*line))
++line;
p = line;
while (isdigit(*p))
++p;
if (p - line != 2)
return -1;
h = atoi(line);
if (*p != ':')
return -1;
line = ++p;
while (isdigit(*p))
++p;
if (p - line != 2)
return -1;
m = atoi(line);
if (*p != ':')
return -1;
line = ++p;
while (isdigit(*p))
++p;
if (p - line != 2)
return -1;
s = atoi(line);
if (*p != ':')
return -1;
line = ++p;
while (isdigit(*p))
++p;
if (p - line != 3)
return -1;
ms = atoi(line);
if (*p != ',')
return -1;
line = p + 1;
while (isspace(*line))
++line;
if (strncmp("filepos:", line, 8))
return -1;
line += 8;
while (isspace(*line))
++line;
if (! isxdigit(*line))
return -1;
filepos = strtol(line, NULL, 16);
return vobsub_add_timestamp(vob, filepos, vob->delay + ms + 1000 * (s + 60 * (m + 60 * h)));
}
static int
vobsub_parse_size(vobsub_t *vob, const char *line)
{
// size: WWWxHHH
char *p;
while (isspace(*line))
++line;
if (!isdigit(*line))
return -1;
vob->orig_frame_width = strtoul(line, &p, 10);
if (*p != 'x')
return -1;
++p;
vob->orig_frame_height = strtoul(p, NULL, 10);
return 0;
}
static int
vobsub_parse_origin(vobsub_t *vob, const char *line)
{
// org: X,Y
char *p;
while (isspace(*line))
++line;
if (!isdigit(*line))
return -1;
vob->origin_x = strtoul(line, &p, 10);
if (*p != ',')
return -1;
++p;
vob->origin_y = strtoul(p, NULL, 10);
return 0;
}
static int
vobsub_parse_palette(vobsub_t *vob, const char *line)
{
// palette: XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX, XXXXXX
unsigned int n;
n = 0;
while (1) {
const char *p;
while (isspace(*line))
++line;
p = line;
while (isxdigit(*p))
++p;
if (p - line != 6)
return -1;
vob->palette[n++] = strtoul(line, NULL, 16);
if (n == 16)
break;
if (*p == ',')
++p;
line = p;
}
vob->have_palette = 1;
return 0;
}
static int
vobsub_parse_custom(vobsub_t *vob, const char *line)
{
//custom colors: OFF/ON(0/1)
if ((strncmp("ON", line + 15, 2) == 0)||strncmp("1", line + 15, 1) == 0)
vob->custom=1;
else if ((strncmp("OFF", line + 15, 3) == 0)||strncmp("0", line + 15, 1) == 0)
vob->custom=0;
else
return -1;
return 0;
}
static int
vobsub_parse_cuspal(vobsub_t *vob, const char *line)
{
//colors: XXXXXX, XXXXXX, XXXXXX, XXXXXX
unsigned int n;
n = 0;
line += 40;
while(1){
const char *p;
while (isspace(*line))
++line;
p=line;
while (isxdigit(*p))
++p;
if (p - line !=6)
return -1;
vob->cuspal[n++] = strtoul(line, NULL,16);
if (n==4)
break;
if(*p == ',')
++p;
line = p;
}
return 0;
}
/* don't know how to use tridx */
static int
vobsub_parse_tridx(const char *line)
{
//tridx: XXXX
int tridx;
tridx = strtoul((line + 26), NULL, 16);
tridx = ((tridx&0x1000)>>12) | ((tridx&0x100)>>7) | ((tridx&0x10)>>2) | ((tridx&1)<<3);
return tridx;
}
static int
vobsub_parse_delay(vobsub_t *vob, const char *line)
{
int h, m, s, ms;
int forward = 1;
if (*(line + 7) == '+'){
forward = 1;
line++;
}
else if (*(line + 7) == '-'){
forward = -1;
line++;
}
mp_msg(MSGT_SPUDEC,MSGL_V, "forward=%d", forward);
h = atoi(line + 7);
mp_msg(MSGT_VOBSUB,MSGL_V, "h=%d," ,h);
m = atoi(line + 10);
mp_msg(MSGT_VOBSUB,MSGL_V, "m=%d,", m);
s = atoi(line + 13);
mp_msg(MSGT_VOBSUB,MSGL_V, "s=%d,", s);
ms = atoi(line + 16);
mp_msg(MSGT_VOBSUB,MSGL_V, "ms=%d", ms);
vob->delay = ms + 1000 * (s + 60 * (m + 60 * h)) * forward;
return 0;
}
static int
vobsub_set_lang(const char *line)
{
if (vobsub_id == -1)
vobsub_id = atoi(line + 8);
return 0;
}
static int
vobsub_parse_one_line(vobsub_t *vob, FILE *fd)
{
ssize_t line_size;
int res = -1;
do {
size_t line_reserve = 0;
char *line = NULL;
line_size = getline(&line, &line_reserve, fd);
if (line_size < 0) {
if (line)
free(line);
break;
}
if (*line == 0 || *line == '\r' || *line == '\n' || *line == '#')
continue;
else if (strncmp("langidx:", line, 8) == 0)
res = vobsub_set_lang(line);
else if (strncmp("delay:", line, 6) == 0)
res = vobsub_parse_delay(vob, line);
else if (strncmp("id:", line, 3) == 0)
res = vobsub_parse_id(vob, line + 3);
else if (strncmp("palette:", line, 8) == 0)
res = vobsub_parse_palette(vob, line + 8);
else if (strncmp("size:", line, 5) == 0)
res = vobsub_parse_size(vob, line + 5);
else if (strncmp("org:", line, 4) == 0)
res = vobsub_parse_origin(vob, line + 4);
else if (strncmp("timestamp:", line, 10) == 0)
res = vobsub_parse_timestamp(vob, line + 10);
else if (strncmp("custom colors:", line, 14) == 0)
//custom colors: ON/OFF, tridx: XXXX, colors: XXXXXX, XXXXXX, XXXXXX,XXXXXX
res = vobsub_parse_cuspal(vob, line) + vobsub_parse_tridx(line) + vobsub_parse_custom(vob, line);
else {
if (verbose)
mp_msg(MSGT_VOBSUB,MSGL_V, "vobsub: ignoring %s", line);
continue;
}
if (res < 0)
mp_msg(MSGT_VOBSUB,MSGL_ERR, "ERROR in %s", line);
break;
} while (1);
return res;
}
int
vobsub_parse_ifo(void* this, const char *const name, unsigned int *palette, unsigned int *width, unsigned int *height, int force,
int sid, char *langid)
{
vobsub_t *vob = (vobsub_t*)this;
int res = -1;
FILE *fd = fopen(name, "rb");
if (fd == NULL) {
if (force)
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Can't open IFO file");
} else {
// parse IFO header
unsigned char block[0x800];
const char *const ifo_magic = "DVDVIDEO-VTS";
if (fread(block, sizeof(block), 1, fd) != 1) {
if (force)
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Can't read IFO header");
} else if (memcmp(block, ifo_magic, strlen(ifo_magic) + 1))
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Bad magic in IFO header\n");
else {
unsigned long pgci_sector = block[0xcc] << 24 | block[0xcd] << 16
| block[0xce] << 8 | block[0xcf];
int standard = (block[0x200] & 0x30) >> 4;
int resolution = (block[0x201] & 0x0c) >> 2;
*height = standard ? 576 : 480;
*width = 0;
switch (resolution) {
case 0x0:
*width = 720;
break;
case 0x1:
*width = 704;
break;
case 0x2:
*width = 352;
break;
case 0x3:
*width = 352;
*height /= 2;
break;
default:
mp_msg(MSGT_VOBSUB,MSGL_WARN,"Vobsub: Unknown resolution %d \n", resolution);
}
if (langid && 0 <= sid && sid < 32) {
unsigned char *tmp = block + 0x256 + sid * 6 + 2;
langid[0] = tmp[0];
langid[1] = tmp[1];
langid[2] = 0;
}
if (fseek(fd, pgci_sector * sizeof(block), SEEK_SET)
|| fread(block, sizeof(block), 1, fd) != 1)
mp_msg(MSGT_VOBSUB,MSGL_ERR, "Can't read IFO PGCI");
else {
unsigned long idx;
unsigned long pgc_offset = block[0xc] << 24 | block[0xd] << 16
| block[0xe] << 8 | block[0xf];
for (idx = 0; idx < 16; ++idx) {
unsigned char *p = block + pgc_offset + 0xa4 + 4 * idx;
palette[idx] = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
}
if(vob)
vob->have_palette = 1;
res = 0;
}
}
fclose(fd);
}
return res;
}
void *
vobsub_open(const char *const name,const char *const ifo,const int force,void** spu)
{
vobsub_t *vob = malloc(sizeof(vobsub_t));
if(spu)
*spu = NULL;
if (vob) {
char *buf;
vob->custom = 0;
vob->have_palette = 0;
vob->orig_frame_width = 0;
vob->orig_frame_height = 0;
vob->spu_streams = NULL;
vob->spu_streams_size = 0;
vob->spu_streams_current = 0;
vob->delay = 0;
buf = malloc((strlen(name) + 5) * sizeof(char));
if (buf) {
FILE *fd;
mpeg_t *mpg;
/* read in the info file */
if(!ifo) {
strcpy(buf, name);
strcat(buf, ".ifo");
vobsub_parse_ifo(vob,buf, vob->palette, &vob->orig_frame_width, &vob->orig_frame_height, force, -1, NULL);
} else
vobsub_parse_ifo(vob,ifo, vob->palette, &vob->orig_frame_width, &vob->orig_frame_height, force, -1, NULL);
/* read in the index */
strcpy(buf, name);
strcat(buf, ".idx");
fd = fopen(buf, "rb");
if (fd == NULL) {
if(force)
mp_msg(MSGT_VOBSUB,MSGL_ERR,"VobSub: Can't open IDX file");
else {
free(buf);
free(vob);
return NULL;
}
} else {
while (vobsub_parse_one_line(vob, fd) >= 0)
/* NOOP */ ;
fclose(fd);
}
/* if no palette in .idx then use custom colors */
if ((vob->custom == 0)&&(vob->have_palette!=1))
vob->custom = 1;
if (spu && vob->orig_frame_width && vob->orig_frame_height)
*spu = spudec_new_scaled_vobsub(vob->palette, vob->cuspal, vob->custom, vob->orig_frame_width, vob->orig_frame_height);
/* read the indexed mpeg_stream */
strcpy(buf, name);
strcat(buf, ".sub");
mpg = mpeg_open(buf);
if (mpg == NULL) {
if(force)
mp_msg(MSGT_VOBSUB,MSGL_ERR,"VobSub: Can't open SUB file");
else {
free(buf);
free(vob);
return NULL;
}
} else {
long last_pts_diff = 0;
while (!mpeg_eof(mpg)) {
off_t pos = mpeg_tell(mpg);
if (mpeg_run(mpg) < 0) {
if (!mpeg_eof(mpg))
mp_msg(MSGT_VOBSUB,MSGL_ERR,"mpeg_run error");
break;
}
if (mpg->packet_size) {
if ((mpg->aid & 0xe0) == 0x20) {
unsigned int sid = mpg->aid & 0x1f;
if (vobsub_ensure_spu_stream(vob, sid) >= 0) {
packet_queue_t *queue = vob->spu_streams + sid;
/* get the packet to fill */
if (queue->packets_size == 0 && packet_queue_grow(queue) < 0)
abort();
while (queue->current_index + 1 < queue->packets_size
&& queue->packets[queue->current_index + 1].filepos <= pos)
++queue->current_index;
if (queue->current_index < queue->packets_size) {
packet_t *pkt;
if (queue->packets[queue->current_index].data) {
/* insert a new packet and fix the PTS ! */
packet_queue_insert(queue);
queue->packets[queue->current_index].pts100 =
mpg->pts + last_pts_diff;
}
pkt = queue->packets + queue->current_index;
if (queue->packets_size > 1)
last_pts_diff = pkt->pts100 - mpg->pts;
else
pkt->pts100 = mpg->pts;
/* FIXME: should not use mpg_sub internal informations, make a copy */
pkt->data = mpg->packet;
pkt->size = mpg->packet_size;
mpg->packet = NULL;
mpg->packet_reserve = 0;
mpg->packet_size = 0;
}
}
else
mp_msg(MSGT_VOBSUB,MSGL_WARN, "don't know what to do with subtitle #%u\n", sid);
}
}
}
vob->spu_streams_current = vob->spu_streams_size;
while (vob->spu_streams_current-- > 0)
vob->spu_streams[vob->spu_streams_current].current_index = 0;
mpeg_free(mpg);
}
free(buf);
}
}
return vob;
}
void
vobsub_close(void *this)
{
vobsub_t *vob = (vobsub_t *)this;
if (vob->spu_streams) {
while (vob->spu_streams_size--)
packet_queue_destroy(vob->spu_streams + vob->spu_streams_size);
free(vob->spu_streams);
}
free(vob);
}
int
vobsub_get_packet(void *vobhandle, float pts,void** data, int* timestamp) {
vobsub_t *vob = (vobsub_t *)vobhandle;
unsigned int pts100 = 90000 * pts;
if (vob->spu_streams && 0 <= vobsub_id && (unsigned) vobsub_id < vob->spu_streams_size) {
packet_queue_t *queue = vob->spu_streams + vobsub_id;
while (queue->current_index < queue->packets_size) {
packet_t *pkt = queue->packets + queue->current_index;
if (pkt->pts100 <= pts100) {
++queue->current_index;
*data = pkt->data;
*timestamp = pkt->pts100;
return pkt->size;
} else break;
}
}
return -1;
}
void
vobsub_reset(void *vobhandle)
{
vobsub_t *vob = (vobsub_t *)vobhandle;
if (vob->spu_streams) {
unsigned int n = vob->spu_streams_size;
while (n-- > 0)
vob->spu_streams[n].current_index = 0;
}
}
/**********************************************************************
* Vobsub output
**********************************************************************/
typedef struct {
FILE *fsub;
FILE *fidx;
unsigned int aid;
} vobsub_out_t;
static void
create_idx(vobsub_out_t *me, const unsigned int *palette, unsigned int orig_width, unsigned int orig_height)
{
int i;
fprintf(me->fidx,
"# VobSub index file, v7 (do not modify this line!)\n"
"#\n"
"# Generated by MPlayer " VERSION "\n"
"# See <URL:http://www.mplayerhq.hu/> for more information about MPlayer\n"
"# See <URL:http://vobsub.edensrising.com/> for more information about Vobsub\n"
"#\n"
"size: %ux%u\n",
orig_width, orig_height);
if (palette) {
fputs("palette:", me->fidx);
for (i = 0; i < 16; ++i) {
if (i)
putc(',', me->fidx);
fprintf(me->fidx, " %06x", palette[i] & 0x00ffffff);
}
putc('\n', me->fidx);
}
}
void *
vobsub_out_open(const char *basename, const unsigned int *palette,
unsigned int orig_width, unsigned int orig_height,
const char *id, unsigned int index)
{
vobsub_out_t *result = NULL;
char *filename;
filename = malloc(strlen(basename) + 5);
if (filename) {
result = malloc(sizeof(vobsub_out_t));
result->fsub = NULL;
result->fidx = NULL;
result->aid = 0;
if (result) {
result->aid = index;
strcpy(filename, basename);
strcat(filename, ".sub");
result->fsub = fopen(filename, "a");
if (result->fsub == NULL)
perror("Error: vobsub_out_open subtitle file open failed");
strcpy(filename, basename);
strcat(filename, ".idx");
result->fidx = fopen(filename, "a");
if (result->fidx) {
if (ftell(result->fidx) == 0)
create_idx(result, palette, orig_width, orig_height);
fprintf(result->fidx, "\nid: %s, index: %u\n", id ? id : "xx", index);
/* So that we can check the file now */
fflush(result->fidx);
}
else
perror("Error: vobsub_out_open index file open failed");
free(filename);
}
}
return result;
}
void
vobsub_out_close(void *me)
{
vobsub_out_t *vob = (vobsub_out_t*)me;
if (vob->fidx)
fclose(vob->fidx);
if (vob->fsub)
fclose(vob->fsub);
free(vob);
}
void
vobsub_out_output(void *me, const unsigned char *packet, int len, double pts)
{
static double last_pts;
static int last_pts_set = 0;
vobsub_out_t *vob = (vobsub_out_t*)me;
if (vob->fsub) {
/* Windows' Vobsub require that every packet is exactly 2kB long */
unsigned char buffer[2048];
unsigned char *p;
int remain = 2048;
/* Do not output twice a line with the same timestamp, this
breaks Windows' Vobsub */
if (vob->fidx && (!last_pts_set || last_pts != pts)) {
static unsigned int last_h = 9999, last_m = 9999, last_s = 9999, last_ms = 9999;
unsigned int h, m, ms;
double s;
s = pts;
h = s / 3600;
s -= h * 3600;
m = s / 60;
s -= m * 60;
ms = (s - (unsigned int) s) * 1000;
if (ms >= 1000) /* prevent overfolws or bad float stuff */
ms = 0;
if (h != last_h || m != last_m || (unsigned int) s != last_s || ms != last_ms) {
fprintf(vob->fidx, "timestamp: %02u:%02u:%02u:%03u, filepos: %09lx\n",
h, m, (unsigned int) s, ms, ftell(vob->fsub));
last_h = h;
last_m = m;
last_s = (unsigned int) s;
last_ms = ms;
}
}
last_pts = pts;
last_pts_set = 1;
/* Packet start code: Windows' Vobsub needs this */
p = buffer;
*p++ = 0; /* 0x00 */
*p++ = 0;
*p++ = 1;
*p++ = 0xba;
*p++ = 0x40;
memset(p, 0, 9);
p += 9;
{ /* Packet */
static unsigned char last_pts[5] = { 0, 0, 0, 0, 0};
unsigned char now_pts[5];
int pts_len, pad_len, datalen = len;
pts *= 90000;
now_pts[0] = 0x21 | (((unsigned long)pts >> 29) & 0x0e);
now_pts[1] = ((unsigned long)pts >> 22) & 0xff;
now_pts[2] = 0x01 | (((unsigned long)pts >> 14) & 0xfe);
now_pts[3] = ((unsigned long)pts >> 7) & 0xff;
now_pts[4] = 0x01 | (((unsigned long)pts << 1) & 0xfe);
pts_len = memcmp(last_pts, now_pts, sizeof(now_pts)) ? sizeof(now_pts) : 0;
memcpy(last_pts, now_pts, sizeof(now_pts));
datalen += 3; /* Version, PTS_flags, pts_len */
datalen += pts_len;
datalen += 1; /* AID */
pad_len = 2048 - (p - buffer) - 4 /* MPEG ID */ - 2 /* payload len */ - datalen;
/* XXX - Go figure what should go here! In any case the
packet has to be completly filled. If I can fill it
with padding (0x000001be) latter I'll do that. But if
there is only room for 6 bytes then I can not write a
padding packet. So I add some padding in the PTS
field. This looks like a dirty kludge. Oh well... */
if (pad_len < 0) {
/* Packet is too big. Let's try ommiting the PTS field */
datalen -= pts_len;
pts_len = 0;
pad_len = 0;
}
else if (pad_len > 6)
pad_len = 0;
datalen += pad_len;
*p++ = 0; /* 0x0e */
*p++ = 0;
*p++ = 1;
*p++ = 0xbd;
*p++ = (datalen >> 8) & 0xff; /* length of payload */
*p++ = datalen & 0xff;
*p++ = 0x80; /* System-2 (.VOB) stream */
*p++ = pts_len ? 0x80 : 0x00; /* pts_flags */
*p++ = pts_len + pad_len;
memcpy(p, now_pts, pts_len);
p += pts_len;
memset(p, 0, pad_len);
p += pad_len;
}
*p++ = 0x20 | vob->aid; /* aid */
if (fwrite(buffer, p - buffer, 1, vob->fsub) != 1
|| fwrite(packet, len, 1, vob->fsub) != 1)
perror("ERROR: vobsub write failed");
else
remain -= p - buffer + len;
/* Padding */
if (remain >= 6) {
p = buffer;
*p++ = 0x00;
*p++ = 0x00;
*p++ = 0x01;
*p++ = 0xbe;
*p++ = (remain - 6) >> 8;
*p++ = (remain - 6) & 0xff;
/* for better compression, blank this */
memset(buffer + 6, 0, remain - (p - buffer));
if (fwrite(buffer, remain, 1, vob->fsub) != 1)
perror("ERROR: vobsub padding write failed");
}
else if (remain > 0) {
/* I don't know what to output. But anyway the block
needs to be 2KB big */
memset(buffer, 0, remain);
if (fwrite(buffer, remain, 1, vob->fsub) != 1)
perror("ERROR: vobsub blank padding write failed");
}
else if (remain < 0)
fprintf(stderr,
"\nERROR: wrong thing happenned...\n"
" I wrote a %i data bytes spu packet and that's too long\n", len);
}
}
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