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879ebe0655
mpv/stream/stream_bluray.c
wm4 9085b85729 stream: fix dvd:// + cache crashing 
The language string was dynamically allocated, which completely fails
if the cache is forked (which it usually is). Change it back to a fixed
length string, like the original code had it.
2012-11-20 18:00:15 +01:00

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/*
* Copyright (C) 2010 Benjamin Zores <ben@geexbox.org>
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* Blu-ray parser/reader using libbluray
* Use 'git clone git://git.videolan.org/libbluray' to get it.
*
* TODO:
* - Add libbdnav support for menus navigation
* - Add AACS/BD+ protection detection
* - Add descrambled keys database support (KEYDB.cfg)
*
*/
#include <libbluray/bluray.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "libavutil/common.h"
#include "demux/demux.h"
#include "talloc.h"
#include "core/mp_msg.h"
#include "core/m_struct.h"
#include "core/m_option.h"
#include "stream.h"
#define BLURAY_SECTOR_SIZE 6144
#define BLURAY_DEFAULT_ANGLE 0
#define BLURAY_DEFAULT_CHAPTER 0
#define BLURAY_DEFAULT_TITLE 0
char *bluray_device = NULL;
int bluray_angle = 0;
int bluray_chapter = 0;
struct bluray_priv_s {
BLURAY *bd;
int current_angle;
int current_chapter;
int current_title;
};
static struct stream_priv_s {
int title;
char *device;
} bluray_stream_priv_dflts = {
BLURAY_DEFAULT_TITLE,
NULL
};
#define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
static const m_option_t bluray_stream_opts_fields[] = {
{ "hostname", ST_OFF(title), CONF_TYPE_INT, M_OPT_RANGE, 0, 99999, NULL},
{ "filename", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
{ NULL, NULL, 0, 0, 0, 0, NULL }
};
static const struct m_struct_st bluray_stream_opts = {
"bluray",
sizeof(struct stream_priv_s),
&bluray_stream_priv_dflts,
bluray_stream_opts_fields
};
static void bluray_stream_close(stream_t *s)
{
struct bluray_priv_s *b = s->priv;
bd_close(b->bd);
b->bd = NULL;
free(b);
}
static int bluray_stream_seek(stream_t *s, int64_t pos)
{
struct bluray_priv_s *b = s->priv;
int64_t p;
p = bd_seek(b->bd, pos);
if (p == -1)
return 0;
s->pos = p;
return 1;
}
static int bluray_stream_fill_buffer(stream_t *s, char *buf, int len)
{
struct bluray_priv_s *b = s->priv;
return bd_read(b->bd, buf, len);
}
static int bluray_stream_control(stream_t *s, int cmd, void *arg)
{
struct bluray_priv_s *b = s->priv;
switch (cmd) {
case STREAM_CTRL_GET_NUM_CHAPTERS: {
BLURAY_TITLE_INFO *ti;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
*((unsigned int *) arg) = ti->chapter_count;
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_CURRENT_TITLE: {
*((unsigned int *) arg) = b->current_title;
return 1;
}
case STREAM_CTRL_GET_CURRENT_CHAPTER: {
*((unsigned int *) arg) = b->current_chapter;
return 1;
}
case STREAM_CTRL_SEEK_TO_CHAPTER: {
BLURAY_TITLE_INFO *ti;
int chapter = *((unsigned int *) arg);
int64_t pos;
int r;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
if (chapter < 0 || chapter > ti->chapter_count) {
bd_free_title_info(ti);
return STREAM_UNSUPPORTED;
}
pos = bd_chapter_pos(b->bd, chapter);
r = bluray_stream_seek(s, pos);
bd_free_title_info(ti);
return r ? 1 : STREAM_UNSUPPORTED;
}
case STREAM_CTRL_GET_NUM_ANGLES: {
BLURAY_TITLE_INFO *ti;
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
*((int *) arg) = ti->angle_count;
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_ANGLE: {
*((int *) arg) = b->current_angle;
return 1;
}
case STREAM_CTRL_SET_ANGLE: {
BLURAY_TITLE_INFO *ti;
int angle = *((int *) arg);
ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (!ti)
return STREAM_UNSUPPORTED;
if (angle < 0 || angle > ti->angle_count) {
bd_free_title_info(ti);
return STREAM_UNSUPPORTED;
}
b->current_angle = angle;
bd_seamless_angle_change(b->bd, angle);
bd_free_title_info(ti);
return 1;
}
case STREAM_CTRL_GET_LANG: {
struct stream_lang_req *req = arg;
BLURAY_TITLE_INFO *ti = bd_get_title_info(b->bd, b->current_title, b->current_angle);
if (ti->clip_count) {
BLURAY_STREAM_INFO *si = NULL;
int count = 0;
switch (req->type) {
case STREAM_AUDIO:
count = ti->clips[0].audio_stream_count;
si = ti->clips[0].audio_streams;
break;
case STREAM_SUB:
count = ti->clips[0].pg_stream_count;
si = ti->clips[0].pg_streams;
break;
}
while (count-- > 0) {
if (si->pid == req->id) {
snprintf(req->name, sizeof(req->name), "%.4s", si->lang);
bd_free_title_info(ti);
return STREAM_OK;
}
si++;
}
}
bd_free_title_info(ti);
return STREAM_ERROR;
}
default:
break;
}
return STREAM_UNSUPPORTED;
}
static int bluray_stream_open(stream_t *s, int mode,
void *opts, int *file_format)
{
struct stream_priv_s *p = opts;
struct bluray_priv_s *b;
BLURAY_TITLE_INFO *info = NULL;
BLURAY *bd;
int title, title_guess, title_count;
uint64_t title_size;
unsigned int chapter = 0, angle = 0;
uint64_t max_duration = 0;
int64_t chapter_pos = 0;
char *device = NULL;
int i;
/* find the requested device */
if (p->device)
device = p->device;
else if (bluray_device)
device = bluray_device;
if (!device) {
mp_tmsg(MSGT_OPEN, MSGL_ERR,
"No Blu-ray device/location was specified ...\n");
return STREAM_UNSUPPORTED;
}
/* open device */
bd = bd_open(device, NULL);
if (!bd) {
mp_tmsg(MSGT_OPEN, MSGL_ERR, "Couldn't open Blu-ray device: %s\n",
device);
return STREAM_UNSUPPORTED;
}
/* check for available titles on disc */
title_count = bd_get_titles(bd, TITLES_RELEVANT, angle);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_BLURAY_TITLES=%d\n", title_count);
if (!title_count) {
mp_msg(MSGT_OPEN, MSGL_ERR,
"Can't find any Blu-ray-compatible title here.\n");
bd_close(bd);
return STREAM_UNSUPPORTED;
}
/* parse titles information */
title_guess = BLURAY_DEFAULT_TITLE;
for (i = 0; i < title_count; i++) {
BLURAY_TITLE_INFO *ti;
int sec, msec;
ti = bd_get_title_info(bd, i, angle);
if (!ti)
continue;
sec = ti->duration / 90000;
msec = (ti->duration - sec) % 1000;
mp_msg(MSGT_IDENTIFY, MSGL_INFO,
"ID_BLURAY_TITLE_%d_CHAPTERS=%d\n", i + 1, ti->chapter_count);
mp_msg(MSGT_IDENTIFY, MSGL_INFO,
"ID_BLURAY_TITLE_%d_ANGLE=%d\n", i + 1, ti->angle_count);
mp_msg(MSGT_IDENTIFY, MSGL_V,
"ID_BLURAY_TITLE_%d_LENGTH=%d.%03d\n", i + 1, sec, msec);
/* try to guess which title may contain the main movie */
if (ti->duration > max_duration) {
max_duration = ti->duration;
title_guess = i;
}
bd_free_title_info(ti);
}
/* Select current title */
title = p->title ? p->title - 1: title_guess;
title = FFMIN(title, title_count - 1);
bd_select_title(bd, title);
title_size = bd_get_title_size(bd);
mp_msg(MSGT_IDENTIFY, MSGL_INFO,
"ID_BLURAY_CURRENT_TITLE=%d\n", title + 1);
/* Get current title information */
info = bd_get_title_info(bd, title, angle);
if (!info)
goto err_no_info;
/* Select chapter */
chapter = bluray_chapter ? bluray_chapter : BLURAY_DEFAULT_CHAPTER;
chapter = FFMIN(chapter, info->chapter_count);
if (chapter)
chapter_pos = bd_chapter_pos(bd, chapter);
mp_msg(MSGT_IDENTIFY, MSGL_INFO,
"ID_BLURAY_CURRENT_CHAPTER=%d\n", chapter + 1);
/* Select angle */
angle = bluray_angle ? bluray_angle : BLURAY_DEFAULT_ANGLE;
angle = FFMIN(angle, info->angle_count);
if (angle)
bd_select_angle(bd, angle);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_BLURAY_CURRENT_ANGLE=%d\n", angle + 1);
bd_free_title_info(info);
err_no_info:
s->fill_buffer = bluray_stream_fill_buffer;
s->seek = bluray_stream_seek;
s->close = bluray_stream_close;
s->control = bluray_stream_control;
b = calloc(1, sizeof(struct bluray_priv_s));
b->bd = bd;
b->current_angle = angle;
b->current_chapter = chapter;
b->current_title = title;
s->start_pos = chapter_pos;
s->end_pos = title_size;
s->sector_size = BLURAY_SECTOR_SIZE;
s->flags = mode | MP_STREAM_SEEK;
s->priv = b;
s->type = STREAMTYPE_BLURAY;
s->url = strdup("br://");
mp_tmsg(MSGT_OPEN, MSGL_V, "Blu-ray successfully opened.\n");
return STREAM_OK;
}
const stream_info_t stream_info_bluray = {
"Blu-ray Disc",
"bd",
"Benjamin Zores",
"Play Blu-ray discs through external libbluray",
bluray_stream_open,
{ "bd", "br", "bluray", NULL },
&bluray_stream_opts,
1
};
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