mirror of
https://github.com/mpv-player/mpv
synced 2024-12-13 10:26:00 +00:00
ce183a3fd0
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4115 b3059339-0415-0410-9bf9-f77b7e298cf2
786 lines
19 KiB
C
786 lines
19 KiB
C
/*
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* Some code freely inspired from VobSub <URL:http://vobsub.edensrising.com>,
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* with kind permission from Gabest <gabest@freemail.hu>
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*/
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/* #define HAVE_GETLINE */
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "config.h"
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#include "stream.h"
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#include "vobsub.h"
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#include "spudec.h"
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#include "mp_msg.h"
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extern int vobsub_id;
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extern int verbose;
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#ifdef HAVE_GETLINE
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extern ssize_t getline(char **, size_t *, FILE *);
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#else
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/* FIXME This should go into a general purpose library or even a
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separate file. */
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static ssize_t
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getline (char **lineptr, size_t *n, FILE *stream)
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{
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size_t res = 0;
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int c;
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if (*lineptr == NULL) {
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*lineptr = malloc(4096);
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if (*lineptr)
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*n = 4096;
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}
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else if (*n == 0) {
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char *tmp = realloc(*lineptr, 4096);
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if (tmp) {
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*lineptr = tmp;
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*n = 4096;
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}
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}
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if (*lineptr == NULL || *n == 0)
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return -1;
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for (c = fgetc(stream); c != EOF; c = fgetc(stream)) {
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if (res + 1 >= *n) {
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char *tmp = realloc(*lineptr, *n * 2);
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if (tmp == NULL)
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return -1;
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*lineptr = tmp;
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*n *= 2;
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}
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(*lineptr)[res++] = c;
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if (c == '\n') {
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(*lineptr)[res] = 0;
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return res;
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}
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}
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if (res == 0)
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return -1;
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(*lineptr)[res] = 0;
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return res;
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}
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#endif
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/**********************************************************************
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* MPEG parsing
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**********************************************************************/
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typedef struct {
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stream_t *stream;
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unsigned int pts;
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int aid;
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unsigned char *packet;
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unsigned int packet_reserve;
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unsigned int packet_size;
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} mpeg_t;
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static mpeg_t *
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mpeg_open(const char *filename)
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{
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mpeg_t *res = malloc(sizeof(mpeg_t));
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int err = res == NULL;
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if (!err) {
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int fd;
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res->pts = 0;
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res->aid = -1;
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res->packet = NULL;
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res->packet_size = 0;
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res->packet_reserve = 0;
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fd = open(filename, O_RDONLY);
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err = fd < 0;
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if (!err) {
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res->stream = new_stream(fd, STREAMTYPE_FILE);
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err = res->stream == NULL;
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if (err)
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close(fd);
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}
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if (err)
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free(res);
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}
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return err ? NULL : res;
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}
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static void
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mpeg_free(mpeg_t *mpeg)
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{
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int fd;
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if (mpeg->packet)
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free(mpeg->packet);
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fd = mpeg->stream->fd;
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free_stream(mpeg->stream);
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close(fd);
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free(mpeg);
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}
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static int
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mpeg_eof(mpeg_t *mpeg)
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{
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return stream_eof(mpeg->stream);
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}
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static off_t
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mpeg_tell(mpeg_t *mpeg)
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{
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return stream_tell(mpeg->stream);
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}
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static int
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mpeg_run(mpeg_t *mpeg)
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{
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unsigned int len, idx, version;
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int c;
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/* Goto start of a packet, it starts with 0x000001?? */
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const unsigned char wanted[] = { 0, 0, 1 };
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unsigned char buf[5];
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mpeg->aid = -1;
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mpeg->packet_size = 0;
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if (stream_read(mpeg->stream, buf, 4) != 4)
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return -1;
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while (memcmp(buf, wanted, sizeof(wanted)) != 0) {
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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memmove(buf, buf + 1, 3);
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buf[3] = c;
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}
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switch (buf[3]) {
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case 0xb9: /* System End Code */
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break;
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case 0xba: /* Packet start code */
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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if ((c & 0xc0) == 0x40)
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version = 4;
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else if ((c & 0xf0) == 0x20)
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version = 2;
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else {
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fprintf(stderr, "Unsupported MPEG version: 0x%02x", c);
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return -1;
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}
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if (version == 4) {
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if (!stream_skip(mpeg->stream, 9))
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return -1;
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}
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else if (version == 2) {
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if (!stream_skip(mpeg->stream, 7))
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return -1;
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}
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else
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abort();
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break;
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case 0xbd: /* packet */
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if (stream_read(mpeg->stream, buf, 2) != 2)
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return -1;
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len = buf[0] << 8 | buf[1];
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idx = mpeg_tell(mpeg);
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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if ((c & 0xC0) == 0x40) { /* skip STD scale & size */
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if (stream_read_char(mpeg->stream) < 0)
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return -1;
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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}
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if ((c & 0xf0) == 0x20) { /* System-1 stream timestamp */
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/* Do we need this? */
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abort();
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}
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else if ((c & 0xf0) == 0x30) {
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/* Do we need this? */
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abort();
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}
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else if ((c & 0xc0) == 0x80) { /* System-2 (.VOB) stream */
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unsigned int pts_flags, hdrlen, dataidx;
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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pts_flags = c;
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c = stream_read_char(mpeg->stream);
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if (c < 0)
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return -1;
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hdrlen = c;
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dataidx = mpeg_tell(mpeg) + hdrlen;
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if (dataidx > idx + len) {
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fprintf(stderr, "Invalid header length: %d (total length: %d, idx: %d, dataidx: %d)\n",
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hdrlen, len, idx, dataidx);
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return -1;
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}
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if ((pts_flags & 0xc0) == 0x80) {
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if (stream_read(mpeg->stream, buf, 5) != 5)
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return -1;
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if (!(((buf[0] & 0xf0) == 0x20) && (buf[0] & 1) && (buf[2] & 1) && (buf[4] & 1))) {
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fprintf(stderr, "vobsub PTS error: 0x%02x %02x%02x %02x%02x \n",
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buf[0], buf[1], buf[2], buf[3], buf[4]);
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mpeg->pts = 0;
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}
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else
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mpeg->pts = ((buf[0] & 0x0e) << 29 | buf[1] << 22 | (buf[2] & 0xfe) << 14
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| buf[3] << 7 | (buf[4] >> 1)) / 900;
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}
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else /* if ((pts_flags & 0xc0) == 0xc0) */ {
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/* what's this? */
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/* abort(); */
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}
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stream_seek(mpeg->stream, dataidx);
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mpeg->aid = stream_read_char(mpeg->stream);
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if (mpeg->aid < 0) {
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fprintf(stderr, "Bogus aid %d\n", mpeg->aid);
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return -1;
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}
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mpeg->packet_size = len - ((unsigned int) mpeg_tell(mpeg) - idx);
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if (mpeg->packet_reserve < mpeg->packet_size) {
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if (mpeg->packet)
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free(mpeg->packet);
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mpeg->packet = malloc(mpeg->packet_size);
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if (mpeg->packet)
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mpeg->packet_reserve = mpeg->packet_size;
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}
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if (mpeg->packet == NULL) {
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perror("malloc failure");
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mpeg->packet_reserve = 0;
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mpeg->packet_size = 0;
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return -1;
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}
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if (stream_read(mpeg->stream, mpeg->packet, mpeg->packet_size) != mpeg->packet_size) {
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perror("stream_read failure");
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mpeg->packet_size = 0;
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return -1;
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}
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idx = len;
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}
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break;
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case 0xbe: /* Padding */
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if (stream_read(mpeg->stream, buf, 2) != 2)
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return -1;
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len = buf[0] << 8 | buf[1];
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if (len > 0 && !stream_skip(mpeg->stream, len))
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return -1;
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break;
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default:
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return -1;
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}
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return 0;
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}
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/**********************************************************************
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* Packet queue
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**********************************************************************/
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typedef struct {
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unsigned int pts100;
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off_t filepos;
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unsigned int size;
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unsigned char *data;
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} packet_t;
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typedef struct {
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char *id;
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packet_t *packets;
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unsigned int packets_reserve;
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unsigned int packets_size;
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unsigned int current_index;
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} packet_queue_t;
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static void
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packet_construct(packet_t *pkt)
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{
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pkt->pts100 = 0;
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pkt->filepos = 0;
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pkt->size = 0;
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pkt->data = NULL;
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}
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static void
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packet_destroy(packet_t *pkt)
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{
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if (pkt->data)
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free(pkt->data);
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}
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static void
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packet_queue_construct(packet_queue_t *queue)
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{
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queue->id = NULL;
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queue->packets = NULL;
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queue->packets_reserve = 0;
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queue->packets_size = 0;
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queue->current_index = 0;
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}
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static void
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packet_queue_destroy(packet_queue_t *queue)
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{
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if (queue->packets) {
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while (queue->packets_size--)
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packet_destroy(queue->packets + queue->packets_size);
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free(queue->packets);
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}
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return;
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}
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/* Make sure there is enough room for needed_size packets in the
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packet queue. */
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static int
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packet_queue_ensure(packet_queue_t *queue, unsigned int needed_size)
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{
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if (queue->packets_reserve < needed_size) {
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if (queue->packets) {
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packet_t *tmp = realloc(queue->packets, 2 * queue->packets_reserve * sizeof(packet_t));
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if (tmp == NULL) {
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perror("realloc failure");
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return -1;
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}
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queue->packets = tmp;
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queue->packets_reserve *= 2;
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}
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else {
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queue->packets = malloc(sizeof(packet_t));
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if (queue->packets == NULL) {
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perror("malloc failure");
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return -1;
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}
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queue->packets_reserve = 1;
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}
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}
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return 0;
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}
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/* add one more packet */
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static int
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packet_queue_grow(packet_queue_t *queue)
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{
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if (packet_queue_ensure(queue, queue->packets_size + 1) < 0)
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return -1;
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packet_construct(queue->packets + queue->packets_size);
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++queue->packets_size;
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return 0;
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}
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/* insert a new packet, duplicating pts from the current one */
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static int
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packet_queue_insert(packet_queue_t *queue)
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{
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packet_t *pkts;
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if (packet_queue_ensure(queue, queue->packets_size + 1) < 0)
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return -1;
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/* XXX packet_size does not reflect the real thing here, it will be updated a bit later */
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memmove(queue->packets + queue->current_index + 2,
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queue->packets + queue->current_index + 1,
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sizeof(packet_t) * (queue->packets_size - queue->current_index - 1));
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pkts = queue->packets + queue->current_index;
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++queue->packets_size;
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++queue->current_index;
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packet_construct(pkts + 1);
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pkts[1].pts100 = pkts[0].pts100;
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pkts[1].filepos = pkts[0].filepos;
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return 0;
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}
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/**********************************************************************
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* Vosub
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**********************************************************************/
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typedef struct {
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void *spudec;
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unsigned int palette[16];
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/* index */
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packet_queue_t *spu_streams;
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unsigned int spu_streams_size;
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unsigned int spu_streams_current;
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} vobsub_t;
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/* Make sure that the spu stream idx exists. */
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static int
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vobsub_ensure_spu_stream(vobsub_t *vob, unsigned int index)
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{
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if (index >= vob->spu_streams_size) {
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/* This is a new stream */
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if (vob->spu_streams) {
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packet_queue_t *tmp = realloc(vob->spu_streams, (index + 1) * sizeof(packet_queue_t));
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if (tmp == NULL) {
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perror("vobsub_ensure_spu_stream: realloc failure");
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return -1;
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}
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vob->spu_streams = tmp;
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}
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else {
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vob->spu_streams = malloc((index + 1) * sizeof(packet_queue_t));
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if (vob->spu_streams == NULL) {
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perror("vobsub_ensure_spu_stream: malloc failure");
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return -1;
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}
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}
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while (vob->spu_streams_size <= index) {
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packet_queue_construct(vob->spu_streams + vob->spu_streams_size);
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++vob->spu_streams_size;
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}
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}
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return 0;
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}
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static int
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vobsub_add_id(vobsub_t *vob, const char *id, size_t idlen, const unsigned int index)
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{
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if (vobsub_ensure_spu_stream(vob, index) < 0)
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return -1;
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if (id && idlen) {
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if (vob->spu_streams[index].id)
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free(vob->spu_streams[index].id);
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vob->spu_streams[index].id = malloc(idlen + 1);
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if (vob->spu_streams[index].id == NULL) {
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perror("vobsub_add_id: malloc failure");
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return -1;
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}
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vob->spu_streams[index].id[idlen] = 0;
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memcpy(vob->spu_streams[index].id, id, idlen);
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}
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vob->spu_streams_current = index;
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if (verbose)
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fprintf(stderr, "[vobsub] subtitle (vobsubid): %d language %s\n",
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index, vob->spu_streams[index].id);
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return 0;
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}
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static int
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vobsub_add_timestamp(vobsub_t *vob, off_t filepos, unsigned int ms)
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{
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packet_queue_t *queue;
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packet_t *pkt;
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if (vob->spu_streams == 0) {
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fprintf(stderr, "[vobsub] warning, binning some index entries. Check your index file\n");
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return -1;
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}
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queue = vob->spu_streams + vob->spu_streams_current;
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if (packet_queue_grow(queue) >= 0) {
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pkt = queue->packets + (queue->packets_size - 1);
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pkt->filepos = filepos;
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pkt->pts100 = ms / 10;
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return 0;
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}
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return -1;
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}
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static int
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vobsub_parse_id(vobsub_t *vob, const char *line)
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{
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// id: xx, index: n
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size_t idlen;
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const char *p, *q;
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p = line;
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while (isspace(*p))
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++p;
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q = p;
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while (isalpha(*q))
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++q;
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idlen = q - p;
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if (idlen == 0)
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return -1;
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++q;
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while (isspace(*q))
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++q;
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if (strncmp("index:", q, 6))
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return -1;
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q += 6;
|
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while (isspace(*q))
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++q;
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if (!isdigit(*q))
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return -1;
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return vobsub_add_id(vob, p, idlen, atoi(q));
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}
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|
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static int
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vobsub_parse_timestamp(vobsub_t *vob, const char *line)
|
|
{
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// timestamp: HH:MM:SS.mmm, filepos: 0nnnnnnnnn
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const char *p;
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int h, m, s, ms;
|
|
off_t filepos;
|
|
while (isspace(*line))
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|
++line;
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p = line;
|
|
while (isdigit(*p))
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++p;
|
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if (p - line != 2)
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return -1;
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h = atoi(line);
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if (*p != ':')
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return -1;
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line = ++p;
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|
while (isdigit(*p))
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|
++p;
|
|
if (p - line != 2)
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|
return -1;
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|
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, ms + 1000 * (s + 60 * (m + 60 * h)));
|
|
}
|
|
|
|
static int
|
|
vobsub_parse_one_line(vobsub_t *vob, FILE *fd)
|
|
{
|
|
ssize_t line_size;
|
|
int res = -1;
|
|
do {
|
|
int 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("id:", line, 3) == 0)
|
|
res = vobsub_parse_id(vob, line + 3);
|
|
else if (strncmp("timestamp:", line, 10) == 0)
|
|
res = vobsub_parse_timestamp(vob, line + 10);
|
|
else {
|
|
if (verbose)
|
|
fprintf(stderr, "vobsub: ignoring %s", line);
|
|
continue;
|
|
}
|
|
if (res < 0)
|
|
fprintf(stderr, "ERROR in %s", line);
|
|
break;
|
|
} while (1);
|
|
return res;
|
|
}
|
|
|
|
void *
|
|
vobsub_open(const char *const name)
|
|
{
|
|
vobsub_t *vob = malloc(sizeof(vobsub_t));
|
|
if (vob) {
|
|
char *buf;
|
|
vob->spudec = NULL;
|
|
vob->spu_streams = NULL;
|
|
vob->spu_streams_size = 0;
|
|
vob->spu_streams_current = 0;
|
|
buf = malloc((strlen(name) + 5) * sizeof(char));
|
|
if (buf) {
|
|
FILE *fd;
|
|
mpeg_t *mpg;
|
|
strcpy(buf, name);
|
|
strcat(buf, ".ifo");
|
|
fd = fopen(buf, "rb");
|
|
if (fd == NULL)
|
|
perror("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)
|
|
perror("Can't read IFO header");
|
|
else if (memcmp(block, ifo_magic, strlen(ifo_magic) + 1))
|
|
fprintf(stderr, "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;
|
|
unsigned int orig_frame_y = standard ? 576 : 480;
|
|
unsigned int orig_frame_x = 0;
|
|
switch (resolution) {
|
|
case 0x0:
|
|
orig_frame_x = 720;
|
|
break;
|
|
case 0x1:
|
|
orig_frame_x = 704;
|
|
break;
|
|
case 0x2:
|
|
orig_frame_x = 352;
|
|
break;
|
|
case 0x3:
|
|
orig_frame_x = 352;
|
|
orig_frame_y /= 2;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown resolution %d \n", resolution);
|
|
}
|
|
if (fseek(fd, pgci_sector * sizeof(block), SEEK_SET)
|
|
|| fread(block, sizeof(block), 1, fd) != 1)
|
|
perror("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;
|
|
vob->palette[idx] = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
|
|
}
|
|
}
|
|
vob->spudec = spudec_new_scaled(vob->palette, orig_frame_x, orig_frame_y);
|
|
}
|
|
fclose(fd);
|
|
}
|
|
|
|
/* read in the index */
|
|
strcpy(buf, name);
|
|
strcat(buf, ".idx");
|
|
fd = fopen(buf, "rb");
|
|
if (fd == NULL)
|
|
perror("Can't open IDX file");
|
|
else {
|
|
while (vobsub_parse_one_line(vob, fd) >= 0)
|
|
/* NOOP */ ;
|
|
fclose(fd);
|
|
}
|
|
|
|
/* read the indexed mpeg_stream */
|
|
strcpy(buf, name);
|
|
strcat(buf, ".sub");
|
|
mpg = mpeg_open(buf);
|
|
if (mpg == NULL)
|
|
perror("Can't open SUB file");
|
|
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))
|
|
perror("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;
|
|
last_pts_diff = 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
|
|
fprintf(stderr, "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->spudec)
|
|
spudec_free(vob->spudec);
|
|
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);
|
|
}
|
|
|
|
void vobsub_draw(void *this, int dxs, int dys, void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))
|
|
{
|
|
vobsub_t *vob = (vobsub_t *)this;
|
|
if (vob->spudec)
|
|
spudec_draw_scaled(vob->spudec, dxs, dys, draw_alpha);
|
|
}
|
|
|
|
void
|
|
vobsub_process(void *vobhandle, float pts)
|
|
{
|
|
vobsub_t *vob = (vobsub_t *)vobhandle;
|
|
unsigned int pts100 = 100 * pts;
|
|
if (vob->spudec) {
|
|
spudec_heartbeat(vob->spudec, pts100);
|
|
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) {
|
|
spudec_assemble(vob->spudec, pkt->data, pkt->size, pkt->pts100);
|
|
++queue->current_index;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (vob->spudec)
|
|
spudec_reset(vob->spudec);
|
|
}
|