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mpv/stream/stream_bluray.c

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/*
* Copyright (C) 2010 Benjamin Zores <ben@geexbox.org>
*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Blu-ray parser/reader using libbluray
* Use 'git clone git://git.videolan.org/libbluray' to get it.
*
* TODO:
* - Add descrambled keys database support (KEYDB.cfg)
*
*/
#include <string.h>
#include <strings.h>
#include <assert.h>
#include <libbluray/bluray.h>
#include <libbluray/meta_data.h>
#include <libbluray/overlay.h>
#include <libbluray/keys.h>
#include <libbluray/bluray-version.h>
#include <libavutil/common.h>
#include "config.h"
#include "talloc.h"
#include "common/common.h"
#include "common/msg.h"
#include "options/m_option.h"
#include "options/options.h"
#include "options/path.h"
#include "stream.h"
#include "osdep/timer.h"
#include "sub/osd.h"
#include "sub/img_convert.h"
#include "video/mp_image.h"
#define BLURAY_SECTOR_SIZE 6144
#define BLURAY_DEFAULT_ANGLE 0
#define BLURAY_DEFAULT_CHAPTER 0
#define BLURAY_DEFAULT_TITLE -2
#define BLURAY_MENU_TITLE -1
// 90khz ticks
#define BD_TIMEBASE (90000)
#define BD_TIME_TO_MP(x) ((x) / (double)(BD_TIMEBASE))
#define BD_TIME_FROM_MP(x) ((uint64_t)(x * BD_TIMEBASE))
// copied from aacs.h in libaacs
#define AACS_ERROR_CORRUPTED_DISC -1 /* opening or reading of AACS files failed */
#define AACS_ERROR_NO_CONFIG -2 /* missing config file */
#define AACS_ERROR_NO_PK -3 /* no matching processing key */
#define AACS_ERROR_NO_CERT -4 /* no valid certificate */
#define AACS_ERROR_CERT_REVOKED -5 /* certificate has been revoked */
#define AACS_ERROR_MMC_OPEN -6 /* MMC open failed (no MMC drive ?) */
#define AACS_ERROR_MMC_FAILURE -7 /* MMC failed */
#define AACS_ERROR_NO_DK -8 /* no matching device key */
struct bluray_priv_s {
BLURAY *bd;
BLURAY_TITLE_INFO *title_info;
int num_titles;
int current_angle;
int current_title;
int current_playlist;
int cfg_title;
char *cfg_device;
bool use_nav;
};
static const struct bluray_priv_s bluray_stream_priv_dflts = {
.cfg_title = BLURAY_DEFAULT_TITLE,
};
static const struct bluray_priv_s bdnav_stream_priv_dflts = {
.cfg_title = BLURAY_DEFAULT_TITLE,
.use_nav = true,
};
#define OPT_BASE_STRUCT struct bluray_priv_s
static const m_option_t bluray_stream_opts_fields[] = {
OPT_CHOICE_OR_INT("title", cfg_title, 0, 0, 99999,
({"longest", BLURAY_DEFAULT_TITLE})),
OPT_STRING("device", cfg_device, 0),
{0}
};
static const m_option_t bdnav_stream_opts_fields[] = {
OPT_CHOICE_OR_INT("title", cfg_title, 0, 0, 99999,
({"menu", BLURAY_MENU_TITLE},
{"first", BLURAY_DEFAULT_TITLE})),
OPT_STRING("device", cfg_device, 0),
{0}
};
static void destruct(struct bluray_priv_s *priv)
{
if (priv->title_info)
bd_free_title_info(priv->title_info);
bd_close(priv->bd);
}
inline static int play_title(struct bluray_priv_s *priv, int title)
{
return bd_select_title(priv->bd, title);
}
static void bluray_stream_close(stream_t *s)
{
destruct(s->priv);
}
static void handle_event(stream_t *s, const BD_EVENT *ev)
{
struct bluray_priv_s *b = s->priv;
switch (ev->event) {
case BD_EVENT_MENU:
break;
case BD_EVENT_STILL:
break;
case BD_EVENT_STILL_TIME:
bd_read_skip_still(b->bd);
break;
case BD_EVENT_END_OF_TITLE:
break;
case BD_EVENT_PLAYLIST:
b->current_playlist = ev->param;
b->current_title = bd_get_current_title(b->bd);
if (b->title_info)
bd_free_title_info(b->title_info);
b->title_info = bd_get_playlist_info(b->bd, b->current_playlist,
b->current_angle);
break;
case BD_EVENT_TITLE:
if (ev->param == BLURAY_TITLE_FIRST_PLAY) {
b->current_title = bd_get_current_title(b->bd);
} else
b->current_title = ev->param;
if (b->title_info) {
bd_free_title_info(b->title_info);
b->title_info = NULL;
}
break;
case BD_EVENT_ANGLE:
b->current_angle = ev->param;
if (b->title_info) {
bd_free_title_info(b->title_info);
b->title_info = bd_get_playlist_info(b->bd, b->current_playlist,
b->current_angle);
}
break;
case BD_EVENT_POPUP:
break;
#if BLURAY_VERSION >= BLURAY_VERSION_CODE(0, 5, 0)
case BD_EVENT_DISCONTINUITY:
break;
#endif
default:
MP_TRACE(s, "Unhandled event: %d %d\n", ev->event, ev->param);
break;
}
}
static int bluray_stream_fill_buffer(stream_t *s, char *buf, int len)
{
struct bluray_priv_s *b = s->priv;
BD_EVENT event;
while (bd_get_event(b->bd, &event))
handle_event(s, &event);
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: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (!ti)
return STREAM_UNSUPPORTED;
*((unsigned int *) arg) = ti->chapter_count;
return STREAM_OK;
}
case STREAM_CTRL_GET_CHAPTER_TIME: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (!ti)
return STREAM_UNSUPPORTED;
int chapter = *(double *)arg;
double time = MP_NOPTS_VALUE;
if (chapter >= 0 || chapter < ti->chapter_count)
time = BD_TIME_TO_MP(ti->chapters[chapter].start);
if (time == MP_NOPTS_VALUE)
return STREAM_ERROR;
*(double *)arg = time;
return STREAM_OK;
}
case STREAM_CTRL_SET_CURRENT_TITLE: {
const uint32_t title = *((unsigned int*)arg);
if (title >= b->num_titles || !play_title(b, title))
return STREAM_UNSUPPORTED;
b->current_title = title;
return STREAM_OK;
}
case STREAM_CTRL_GET_CURRENT_TITLE: {
*((unsigned int *) arg) = b->current_title;
return STREAM_OK;
}
case STREAM_CTRL_GET_NUM_TITLES: {
*((unsigned int *)arg) = b->num_titles;
return STREAM_OK;
}
case STREAM_CTRL_GET_TIME_LENGTH: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (!ti)
return STREAM_UNSUPPORTED;
*((double *) arg) = BD_TIME_TO_MP(ti->duration);
return STREAM_OK;
}
case STREAM_CTRL_GET_CURRENT_TIME: {
*((double *) arg) = BD_TIME_TO_MP(bd_tell_time(b->bd));
return STREAM_OK;
}
case STREAM_CTRL_SEEK_TO_TIME: {
double pts = *((double *) arg);
bd_seek_time(b->bd, BD_TIME_FROM_MP(pts));
stream_drop_buffers(s);
// API makes it hard to determine seeking success
return STREAM_OK;
}
case STREAM_CTRL_GET_NUM_ANGLES: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (!ti)
return STREAM_UNSUPPORTED;
*((int *) arg) = ti->angle_count;
return STREAM_OK;
}
case STREAM_CTRL_GET_ANGLE: {
*((int *) arg) = b->current_angle;
return STREAM_OK;
}
case STREAM_CTRL_SET_ANGLE: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (!ti)
return STREAM_UNSUPPORTED;
int angle = *((int *) arg);
if (angle < 0 || angle > ti->angle_count)
return STREAM_UNSUPPORTED;
b->current_angle = angle;
bd_seamless_angle_change(b->bd, angle);
return STREAM_OK;
}
case STREAM_CTRL_GET_LANG: {
const BLURAY_TITLE_INFO *ti = b->title_info;
if (ti && ti->clip_count) {
struct stream_lang_req *req = arg;
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;
}
for (int n = 0; n < count; n++) {
BLURAY_STREAM_INFO *i = &si[n];
if (i->pid == req->id) {
snprintf(req->name, sizeof(req->name), "%.4s", i->lang);
return STREAM_OK;
}
}
}
return STREAM_ERROR;
}
case STREAM_CTRL_GET_DISC_NAME: {
const struct meta_dl *meta = bd_get_meta(b->bd);
if (!meta || !meta->di_name || !meta->di_name[0])
break;
*(char**)arg = talloc_strdup(NULL, meta->di_name);
return STREAM_OK;
}
case STREAM_CTRL_GET_SIZE:
*(int64_t *)arg = bd_get_title_size(b->bd);
return STREAM_OK;
default:
break;
}
return STREAM_UNSUPPORTED;
}
static const char *aacs_strerr(int err)
{
switch (err) {
case AACS_ERROR_CORRUPTED_DISC: return "opening or reading of AACS files failed";
case AACS_ERROR_NO_CONFIG: return "missing config file";
case AACS_ERROR_NO_PK: return "no matching processing key";
case AACS_ERROR_NO_CERT: return "no valid certificate";
case AACS_ERROR_CERT_REVOKED: return "certificate has been revoked";
case AACS_ERROR_MMC_OPEN: return "MMC open failed (maybe no MMC drive?)";
case AACS_ERROR_MMC_FAILURE: return "MMC failed";
case AACS_ERROR_NO_DK: return "no matching device key";
default: return "unknown error";
}
}
static bool check_disc_info(stream_t *s)
{
struct bluray_priv_s *b = s->priv;
const BLURAY_DISC_INFO *info = bd_get_disc_info(b->bd);
// check Blu-ray
if (!info->bluray_detected) {
MP_ERR(s, "Given stream is not a Blu-ray.\n");
return false;
}
// check AACS
if (info->aacs_detected) {
if (!info->libaacs_detected) {
MP_ERR(s, "AACS encryption detected but cannot find libaacs.\n");
return false;
}
if (!info->aacs_handled) {
MP_ERR(s, "AACS error: %s\n", aacs_strerr(info->aacs_error_code));
return false;
}
}
// check BD+
if (info->bdplus_detected) {
if (!info->libbdplus_detected) {
MP_ERR(s, "BD+ encryption detected but cannot find libbdplus.\n");
return false;
}
if (!info->bdplus_handled) {
MP_ERR(s, "Cannot decrypt BD+ encryption.\n");
return false;
}
}
return true;
}
static void select_initial_title(stream_t *s, int title_guess) {
struct bluray_priv_s *b = s->priv;
int title = -1;
if (b->cfg_title != BLURAY_DEFAULT_TITLE )
title = b->cfg_title;
else
title = title_guess;
if (title < 0)
return;
if (play_title(b, title))
b->current_title = title;
else {
MP_WARN(s, "Couldn't start title '%d'.\n", title);
b->current_title = bd_get_current_title(b->bd);
}
}
static int bluray_stream_open(stream_t *s)
{
struct bluray_priv_s *b = s->priv;
const char *device = NULL;
/* find the requested device */
if (b->cfg_device && b->cfg_device[0])
device = b->cfg_device;
else if (s->opts->bluray_device && s->opts->bluray_device[0])
device = s->opts->bluray_device;
if (!device) {
MP_ERR(s, "No Blu-ray device/location was specified ...\n");
return STREAM_UNSUPPORTED;
}
/* open device */
BLURAY *bd = bd_open(device, NULL);
if (!bd) {
MP_ERR(s, "Couldn't open Blu-ray device: %s\n", device);
return STREAM_UNSUPPORTED;
}
b->bd = bd;
if (!check_disc_info(s)) {
destruct(b);
return STREAM_UNSUPPORTED;
}
int title_guess = BLURAY_DEFAULT_TITLE;
if (b->use_nav) {
MP_FATAL(s, "BluRay menu support has been removed.\n");
return STREAM_ERROR;
} else {
/* check for available titles on disc */
b->num_titles = bd_get_titles(bd, TITLES_RELEVANT, 0);
if (!b->num_titles) {
MP_ERR(s, "Can't find any Blu-ray-compatible title here.\n");
destruct(b);
return STREAM_UNSUPPORTED;
}
/* parse titles information */
uint64_t max_duration = 0;
for (int i = 0; i < b->num_titles; i++) {
BLURAY_TITLE_INFO *ti = bd_get_title_info(bd, i, 0);
if (!ti)
continue;
/* 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);
}
}
// these should be set before any callback
b->current_angle = -1;
b->current_title = -1;
// initialize libbluray event queue
bd_get_event(bd, NULL);
select_initial_title(s, title_guess);
s->fill_buffer = bluray_stream_fill_buffer;
s->close = bluray_stream_close;
s->control = bluray_stream_control;
s->type = STREAMTYPE_BLURAY;
s->sector_size = BLURAY_SECTOR_SIZE;
s->priv = b;
s->demuxer = "+disc";
MP_VERBOSE(s, "Blu-ray successfully opened.\n");
return STREAM_OK;
}
const stream_info_t stream_info_bluray = {
.name = "bd",
.open = bluray_stream_open,
.protocols = (const char*const[]){ "bd", "br", "bluray", NULL },
.priv_defaults = &bluray_stream_priv_dflts,
.priv_size = sizeof(struct bluray_priv_s),
.options = bluray_stream_opts_fields,
.url_options = (const char*const[]){
"hostname=title",
"filename=device",
NULL
},
};
const stream_info_t stream_info_bdnav = {
.name = "bdnav",
.open = bluray_stream_open,
.protocols = (const char*const[]){ "bdnav", "brnav", "bluraynav", NULL },
.priv_defaults = &bdnav_stream_priv_dflts,
.priv_size = sizeof(struct bluray_priv_s),
.options = bdnav_stream_opts_fields,
.url_options = (const char*const[]){
"hostname=title",
"filename=device",
NULL
},
};
static bool check_bdmv(const char *path)
{
if (strcasecmp(mp_basename(path), "MovieObject.bdmv"))
return false;
FILE *temp = fopen(path, "rb");
if (!temp)
return false;
bool r = false;
const char *sig1 = "MOBJ020";
const char *sig2 = "MOBJ0100";
char data[50];
if (fread(data, 50, 1, temp) == 1) {
r = memcmp(data, sig1, strlen(sig1)) == 0 ||
memcmp(data, sig2, strlen(sig2)) == 0;
}
fclose(temp);
return r;
}
// Destructively remove the current trailing path component.
static void remove_prefix(char *path)
{
size_t len = strlen(path);
#if HAVE_DOS_PATHS
const char *seps = "/\\";
#else
const char *seps = "/";
#endif
while (len > 0 && !strchr(seps, path[len - 1]))
len--;
while (len > 0 && strchr(seps, path[len - 1]))
len--;
path[len] = '\0';
}
static int bdmv_dir_stream_open(stream_t *stream)
{
struct bluray_priv_s *priv = talloc_ptrtype(stream, priv);
stream->priv = priv;
*priv = bluray_stream_priv_dflts;
char *path = mp_file_get_path(priv, bstr0(stream->url));
if (!path)
goto unsupported;
// We allow the path to point to a directory containing BDMV/, a
// directory containing MovieObject.bdmv, or that file itself.
if (!check_bdmv(path)) {
// On UNIX, just assume the filename has always this case.
char *npath = mp_path_join(priv, path, "MovieObject.bdmv");
if (!check_bdmv(npath)) {
npath = mp_path_join(priv, path, "BDMV/MovieObject.bdmv");
if (!check_bdmv(npath))
goto unsupported;
}
path = npath;
}
// Go up by 2 levels.
remove_prefix(path);
remove_prefix(path);
priv->cfg_device = path;
if (strlen(priv->cfg_device) <= 1)
goto unsupported;
MP_INFO(stream, "BDMV detected. Redirecting to bluray://\n");
return bluray_stream_open(stream);
unsupported:
talloc_free(priv);
stream->priv = NULL;
return STREAM_UNSUPPORTED;
}
const stream_info_t stream_info_bdmv_dir = {
.name = "bdmv/bluray",
.open = bdmv_dir_stream_open,
.protocols = (const char*const[]){ "file", "", NULL },
};
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