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mpv/stream/stream_dvdnav.c
wm4 7a7d8d50e2 dvd: try to improve seeking 
libdvdnav is garbage. Seeking by time is incredibly inexact, which is in
part due to the fact that it does not use the DVD seek tables. Instead,
it assumes CBR for certain ranges within the DVD, which makes especially
small seeks unreliable.

I have no good fix for this, other than hacking libdvdnav (I'd rather
prefer to remove mpv DVD support completely than doing this). So here's
a shitty hack that tries to workaround these problems. A basic
observation is that seeking in VLC seems to work quite well; however it
seems to be based on seeking by blocks (unless there is a subtle "trick"
I didn't see in the source code). mpv usually seeks by timestamps, so
this is not an option for us. However, we can pretend we are doing this
in the DVD layer.

The previous commit added a way to pass through relative seeks. This
commit uses the relative seek. STREAM_CTRL_SEEK_TO_TIME is backwards
compatible (there's still dvdread and bluray), so most code is about
extracing the relative seek information and turning it into a block
seek.

(Another way would have been using SEEK_FACTOR stuff, but that would
probably make for a less reliable way to handle this situation.)

Additionally, if a hr-seek is done, add an offset by 10 seconds. As long
as the error done by libdvdnav is not worse, this should help with hr-
seeks - although it makes them much slower.
2015-01-19 21:30:05 +01:00

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/*
* 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.
*/
#include <libavutil/common.h>
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <assert.h>
#include <dvdnav/dvdnav.h>
#include "osdep/io.h"
#include "options/options.h"
#include "common/msg.h"
#include "input/input.h"
#include "options/m_option.h"
#include "options/path.h"
#include "osdep/timer.h"
#include "stream.h"
#include "demux/demux.h"
#include "discnav.h"
#include "video/out/vo.h"
#include "stream_dvd_common.h"
#define TITLE_MENU -1
#define TITLE_LONGEST -2
struct priv {
dvdnav_t *dvdnav; // handle to libdvdnav stuff
char *filename; // path
unsigned int duration; // in milliseconds
int mousex, mousey;
int title;
uint32_t spu_clut[16];
bool spu_clut_valid;
dvdnav_highlight_event_t hlev;
int still_length; // still frame duration
unsigned long next_event; // bitmask of events to return to player
bool suspended_read;
bool nav_enabled;
bool had_initial_vts;
int dvd_speed;
int track;
char *device;
};
static const struct priv stream_priv_dflts = {
.track = TITLE_LONGEST,
};
#define OPT_BASE_STRUCT struct priv
static const m_option_t stream_opts_fields[] = {
OPT_CHOICE_OR_INT("title", track, 0, 0, 99,
({"menu", TITLE_MENU},
{"longest", TITLE_LONGEST})),
OPT_STRING("device", device, 0),
{0}
};
#define DNE(e) [e] = # e
static const char *const mp_dvdnav_events[] = {
DNE(DVDNAV_BLOCK_OK),
DNE(DVDNAV_NOP),
DNE(DVDNAV_STILL_FRAME),
DNE(DVDNAV_SPU_STREAM_CHANGE),
DNE(DVDNAV_AUDIO_STREAM_CHANGE),
DNE(DVDNAV_VTS_CHANGE),
DNE(DVDNAV_CELL_CHANGE),
DNE(DVDNAV_NAV_PACKET),
DNE(DVDNAV_STOP),
DNE(DVDNAV_HIGHLIGHT),
DNE(DVDNAV_SPU_CLUT_CHANGE),
DNE(DVDNAV_HOP_CHANNEL),
DNE(DVDNAV_WAIT),
};
static const char *const mp_nav_cmd_types[] = {
DNE(MP_NAV_CMD_NONE),
DNE(MP_NAV_CMD_ENABLE),
DNE(MP_NAV_CMD_DRAIN_OK),
DNE(MP_NAV_CMD_RESUME),
DNE(MP_NAV_CMD_SKIP_STILL),
DNE(MP_NAV_CMD_MENU),
DNE(MP_NAV_CMD_MOUSE_POS),
};
static const char *const mp_nav_event_types[] = {
DNE(MP_NAV_EVENT_NONE),
DNE(MP_NAV_EVENT_RESET),
DNE(MP_NAV_EVENT_RESET_CLUT),
DNE(MP_NAV_EVENT_RESET_ALL),
DNE(MP_NAV_EVENT_DRAIN),
DNE(MP_NAV_EVENT_STILL_FRAME),
DNE(MP_NAV_EVENT_HIGHLIGHT),
DNE(MP_NAV_EVENT_MENU_MODE),
DNE(MP_NAV_EVENT_EOF),
};
#define LOOKUP_NAME(array, i) \
(((i) >= 0 && (i) < MP_ARRAY_SIZE(array)) ? array[(i)] : "?")
static void dvdnav_get_highlight(struct priv *priv, int display_mode)
{
pci_t *pnavpci = NULL;
dvdnav_highlight_event_t *hlev = &(priv->hlev);
int btnum;
if (!priv || !priv->dvdnav)
return;
pnavpci = dvdnav_get_current_nav_pci(priv->dvdnav);
if (!pnavpci) {
hlev->display = 0;
return;
}
dvdnav_get_current_highlight(priv->dvdnav, &(hlev->buttonN));
hlev->display = display_mode; /* show */
if (hlev->buttonN > 0 && pnavpci->hli.hl_gi.btn_ns > 0 && hlev->display) {
for (btnum = 0; btnum < pnavpci->hli.hl_gi.btn_ns; btnum++) {
btni_t *btni = &(pnavpci->hli.btnit[btnum]);
if (hlev->buttonN == btnum + 1) {
hlev->sx = FFMIN(btni->x_start, btni->x_end);
hlev->ex = FFMAX(btni->x_start, btni->x_end);
hlev->sy = FFMIN(btni->y_start, btni->y_end);
hlev->ey = FFMAX(btni->y_start, btni->y_end);
hlev->palette = (btni->btn_coln == 0) ?
0 : pnavpci->hli.btn_colit.btn_coli[btni->btn_coln - 1][0];
break;
}
}
} else { /* hide button or no button */
hlev->sx = hlev->ex = 0;
hlev->sy = hlev->ey = 0;
hlev->palette = hlev->buttonN = 0;
}
}
static void handle_menu_input(stream_t *stream, const char *cmd)
{
struct priv *priv = stream->priv;
dvdnav_t *nav = priv->dvdnav;
dvdnav_status_t status = DVDNAV_STATUS_ERR;
pci_t *pci = dvdnav_get_current_nav_pci(nav);
MP_VERBOSE(stream, "DVDNAV: input '%s'\n", cmd);
if (!pci)
return;
if (strcmp(cmd, "up") == 0) {
status = dvdnav_upper_button_select(nav, pci);
} else if (strcmp(cmd, "down") == 0) {
status = dvdnav_lower_button_select(nav, pci);
} else if (strcmp(cmd, "left") == 0) {
status = dvdnav_left_button_select(nav, pci);
} else if (strcmp(cmd, "right") == 0) {
status = dvdnav_right_button_select(nav, pci);
} else if (strcmp(cmd, "menu") == 0) {
status = dvdnav_menu_call(nav, DVD_MENU_Root);
} else if (strcmp(cmd, "prev") == 0) {
int title = 0, part = 0;
dvdnav_current_title_info(nav, &title, &part);
if (title)
status = dvdnav_menu_call(nav, DVD_MENU_Part);
if (status != DVDNAV_STATUS_OK)
status = dvdnav_menu_call(nav, DVD_MENU_Title);
if (status != DVDNAV_STATUS_OK)
status = dvdnav_menu_call(nav, DVD_MENU_Root);
} else if (strcmp(cmd, "select") == 0) {
status = dvdnav_button_activate(nav, pci);
} else if (strcmp(cmd, "mouse") == 0) {
status = dvdnav_mouse_activate(nav, pci, priv->mousex, priv->mousey);
} else {
MP_VERBOSE(stream, "Unknown DVDNAV command: '%s'\n", cmd);
}
}
static void handle_mouse_pos(stream_t *stream, int x, int y)
{
struct priv *priv = stream->priv;
dvdnav_t *nav = priv->dvdnav;
pci_t *pci = dvdnav_get_current_nav_pci(nav);
if (!pci)
return;
dvdnav_mouse_select(nav, pci, x, y);
priv->mousex = x;
priv->mousey = y;
}
/**
* \brief mp_dvdnav_lang_from_aid() returns the language corresponding to audio id 'aid'
* \param stream: - stream pointer
* \param sid: physical subtitle id
* \return 0 on error, otherwise language id
*/
static int mp_dvdnav_lang_from_aid(stream_t *stream, int aid)
{
uint8_t lg;
uint16_t lang;
struct priv *priv = stream->priv;
if (aid < 0)
return 0;
lg = dvdnav_get_audio_logical_stream(priv->dvdnav, aid & 0x7);
if (lg == 0xff)
return 0;
lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
if (lang == 0xffff)
return 0;
return lang;
}
/**
* \brief mp_dvdnav_lang_from_sid() returns the language corresponding to subtitle id 'sid'
* \param stream: - stream pointer
* \param sid: physical subtitle id
* \return 0 on error, otherwise language id
*/
static int mp_dvdnav_lang_from_sid(stream_t *stream, int sid)
{
uint8_t k;
uint16_t lang;
struct priv *priv = stream->priv;
if (sid < 0)
return 0;
for (k = 0; k < 32; k++)
if (dvdnav_get_spu_logical_stream(priv->dvdnav, k) == sid)
break;
if (k == 32)
return 0;
lang = dvdnav_spu_stream_to_lang(priv->dvdnav, k);
if (lang == 0xffff)
return 0;
return lang;
}
/**
* \brief mp_dvdnav_number_of_subs() returns the count of available subtitles
* \param stream: - stream pointer
* \return 0 on error, something meaningful otherwise
*/
static int mp_dvdnav_number_of_subs(stream_t *stream)
{
struct priv *priv = stream->priv;
uint8_t lg, k, n = 0;
for (k = 0; k < 32; k++) {
lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
if (lg == 0xff)
continue;
if (lg >= n)
n = lg + 1;
}
return n;
}
static void handle_cmd(stream_t *s, struct mp_nav_cmd *ev)
{
struct priv *priv = s->priv;
MP_VERBOSE(s, "DVDNAV: input '%s'\n",
LOOKUP_NAME(mp_nav_cmd_types, ev->event));
switch (ev->event) {
case MP_NAV_CMD_ENABLE:
priv->nav_enabled = true;
break;
case MP_NAV_CMD_DRAIN_OK:
dvdnav_wait_skip(priv->dvdnav);
break;
case MP_NAV_CMD_RESUME:
priv->suspended_read = false;
break;
case MP_NAV_CMD_SKIP_STILL:
dvdnav_still_skip(priv->dvdnav);
break;
case MP_NAV_CMD_MENU:
handle_menu_input(s, ev->u.menu.action);
break;
case MP_NAV_CMD_MOUSE_POS:
handle_mouse_pos(s, ev->u.mouse_pos.x, ev->u.mouse_pos.y);
break;
}
}
static inline bool set_event_type(struct priv *priv, int type,
struct mp_nav_event *event)
{
if (!(priv->next_event & (1 << type)))
return false;
priv->next_event &= ~(1 << type);
event->event = type;
return true;
}
static void fill_next_event(stream_t *s, struct mp_nav_event **ret)
{
struct priv *priv = s->priv;
struct mp_nav_event e = {0};
if (!set_event_type(priv, MP_NAV_EVENT_RESET_ALL, &e))
for (int n = 0; n < 30 && !set_event_type(priv, n, &e); n++) ;
switch (e.event) {
case MP_NAV_EVENT_NONE:
return;
case MP_NAV_EVENT_HIGHLIGHT: {
dvdnav_highlight_event_t hlev = priv->hlev;
e.u.highlight.display = hlev.display;
e.u.highlight.sx = hlev.sx;
e.u.highlight.sy = hlev.sy;
e.u.highlight.ex = hlev.ex;
e.u.highlight.ey = hlev.ey;
e.u.highlight.palette = hlev.palette;
break;
}
case MP_NAV_EVENT_MENU_MODE:
e.u.menu_mode.enable = !dvdnav_is_domain_vts(priv->dvdnav);
break;
case MP_NAV_EVENT_STILL_FRAME:
e.u.still_frame.seconds = priv->still_length;
break;
}
*ret = talloc(NULL, struct mp_nav_event);
**ret = e;
MP_VERBOSE(s, "DVDNAV: player event '%s'\n",
LOOKUP_NAME(mp_nav_event_types, e.event));
}
static int fill_buffer(stream_t *s, char *buf, int max_len)
{
struct priv *priv = s->priv;
dvdnav_t *dvdnav = priv->dvdnav;
if (max_len < 2048)
return -1;
while (1) {
if (priv->suspended_read)
return -1;
int len = -1;
int event = DVDNAV_NOP;
if (dvdnav_get_next_block(dvdnav, buf, &event, &len) != DVDNAV_STATUS_OK)
{
MP_ERR(s, "Error getting next block from DVD %d (%s)\n",
event, dvdnav_err_to_string(dvdnav));
return 0;
}
if (event != DVDNAV_BLOCK_OK) {
const char *name = LOOKUP_NAME(mp_dvdnav_events, event);
MP_VERBOSE(s, "DVDNAV: event %s (%d).\n", name, event);
dvdnav_get_highlight(priv, 1);
}
switch (event) {
case DVDNAV_BLOCK_OK:
return len;
case DVDNAV_STOP: {
priv->next_event |= 1 << MP_NAV_EVENT_EOF;
return 0;
}
case DVDNAV_NAV_PACKET: {
pci_t *pnavpci = dvdnav_get_current_nav_pci(dvdnav);
uint32_t start_pts = pnavpci->pci_gi.vobu_s_ptm;
MP_TRACE(s, "start pts = %"PRIu32"\n", start_pts);
break;
}
case DVDNAV_STILL_FRAME: {
dvdnav_still_event_t *still_event = (dvdnav_still_event_t *) buf;
priv->still_length = still_event->length;
if (priv->still_length == 255)
priv->still_length = -1;
MP_VERBOSE(s, "len=%d\n", priv->still_length);
/* set still frame duration */
if (priv->still_length <= 1) {
pci_t *pnavpci = dvdnav_get_current_nav_pci(dvdnav);
priv->duration = mp_dvdtimetomsec(&pnavpci->pci_gi.e_eltm);
}
if (priv->nav_enabled) {
priv->next_event |= 1 << MP_NAV_EVENT_STILL_FRAME;
} else {
dvdnav_still_skip(dvdnav);
}
return 0;
}
case DVDNAV_WAIT: {
if (priv->nav_enabled) {
priv->next_event |= 1 << MP_NAV_EVENT_DRAIN;
} else {
dvdnav_wait_skip(dvdnav);
}
return 0;
}
case DVDNAV_HIGHLIGHT: {
dvdnav_get_highlight(priv, 1);
priv->next_event |= 1 << MP_NAV_EVENT_HIGHLIGHT;
break;
}
case DVDNAV_VTS_CHANGE: {
int tit = 0, part = 0;
dvdnav_vts_change_event_t *vts_event =
(dvdnav_vts_change_event_t *)s->buffer;
MP_INFO(s, "DVDNAV, switched to title: %d\n",
vts_event->new_vtsN);
if (!priv->had_initial_vts) {
// dvdnav sends an initial VTS change before any data; don't
// cause a blocking wait for the player, because the player in
// turn can't initialize the demuxer without data.
priv->had_initial_vts = true;
break;
}
// clear all previous events
priv->next_event = 0;
priv->next_event |= 1 << MP_NAV_EVENT_RESET;
priv->next_event |= 1 << MP_NAV_EVENT_RESET_ALL;
if (dvdnav_current_title_info(dvdnav, &tit, &part) == DVDNAV_STATUS_OK)
{
MP_VERBOSE(s, "DVDNAV, NEW TITLE %d\n", tit);
dvdnav_get_highlight(priv, 0);
if (priv->title > 0 && tit != priv->title) {
priv->next_event |= 1 << MP_NAV_EVENT_EOF;;
MP_WARN(s, "Requested title not found\n");
}
}
if (priv->nav_enabled)
priv->suspended_read = true;
break;
}
case DVDNAV_CELL_CHANGE: {
dvdnav_cell_change_event_t *ev = (dvdnav_cell_change_event_t *)buf;
priv->next_event |= 1 << MP_NAV_EVENT_RESET;
priv->next_event |= 1 << MP_NAV_EVENT_MENU_MODE;
if (ev->pgc_length)
priv->duration = ev->pgc_length / 90;
dvdnav_get_highlight(priv, 1);
break;
}
case DVDNAV_SPU_CLUT_CHANGE: {
memcpy(priv->spu_clut, buf, 16 * sizeof(uint32_t));
priv->spu_clut_valid = true;
priv->next_event |= 1 << MP_NAV_EVENT_RESET_CLUT;
break;
}
}
}
return 0;
}
static int control(stream_t *stream, int cmd, void *arg)
{
struct priv *priv = stream->priv;
dvdnav_t *dvdnav = priv->dvdnav;
int tit, part;
switch (cmd) {
case STREAM_CTRL_GET_NUM_CHAPTERS: {
if (dvdnav_current_title_info(dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
break;
if (dvdnav_get_number_of_parts(dvdnav, tit, &part) != DVDNAV_STATUS_OK)
break;
if (!part)
break;
*(unsigned int *)arg = part;
return 1;
}
case STREAM_CTRL_GET_CHAPTER_TIME: {
double *ch = arg;
int chapter = *ch;
if (dvdnav_current_title_info(dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
break;
uint64_t *parts = NULL, duration = 0;
int n = dvdnav_describe_title_chapters(dvdnav, tit, &parts, &duration);
if (!parts)
break;
if (chapter < 0 || chapter + 1 > n)
break;
*ch = chapter > 0 ? parts[chapter - 1] / 90000.0 : 0;
free(parts);
return 1;
}
case STREAM_CTRL_GET_TIME_LENGTH: {
if (priv->duration) {
*(double *)arg = (double)priv->duration / 1000.0;
return 1;
}
break;
}
case STREAM_CTRL_GET_ASPECT_RATIO: {
uint8_t ar = dvdnav_get_video_aspect(dvdnav);
*(double *)arg = !ar ? 4.0 / 3.0 : 16.0 / 9.0;
return 1;
}
case STREAM_CTRL_GET_CURRENT_TIME: {
double tm;
tm = dvdnav_get_current_time(dvdnav) / 90000.0f;
if (tm != -1) {
*(double *)arg = tm;
return 1;
}
break;
}
case STREAM_CTRL_GET_NUM_TITLES: {
int32_t num_titles = 0;
if (dvdnav_get_number_of_titles(dvdnav, &num_titles) != DVDNAV_STATUS_OK)
break;
*((unsigned int*)arg)= num_titles;
return STREAM_OK;
}
case STREAM_CTRL_GET_TITLE_LENGTH: {
int t = *(double *)arg;
int32_t num_titles = 0;
if (dvdnav_get_number_of_titles(dvdnav, &num_titles) != DVDNAV_STATUS_OK)
break;
if (t < 0 || t >= num_titles)
break;
uint64_t duration = 0;
uint64_t *parts = NULL;
dvdnav_describe_title_chapters(dvdnav, t + 1, &parts, &duration);
if (!parts)
break;
free(parts);
*(double *)arg = duration / 90000.0;
return STREAM_OK;
}
case STREAM_CTRL_GET_CURRENT_TITLE: {
if (dvdnav_current_title_info(dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
break;
*((unsigned int *) arg) = tit - 1;
return STREAM_OK;
}
case STREAM_CTRL_SET_CURRENT_TITLE: {
int title = *((unsigned int *) arg);
if (dvdnav_title_play(priv->dvdnav, title + 1) != DVDNAV_STATUS_OK)
break;
stream_drop_buffers(stream);
return STREAM_OK;
}
case STREAM_CTRL_SEEK_TO_TIME: {
double *args = arg;
double d = args[0]; // absolute target timestamp
double r = args[1]; // if not SEEK_ABSOLUTE, the base time for d
int flags = args[2]; // from SEEK_* flags (demux.h)
if (flags & SEEK_HR)
d -= 10; // fudge offset; it's a hack, because fuck libdvd*
int64_t tm = (int64_t)(d * 90000);
if (tm < 0)
tm = 0;
if (priv->duration && tm >= (priv->duration * 90))
tm = priv->duration * 90 - 1;
uint32_t pos, len;
if (dvdnav_get_position(dvdnav, &pos, &len) != DVDNAV_STATUS_OK)
break;
// The following is convoluted, because we have to translate between
// dvdnav's block/CBR-based seeking bullshit, and the player's
// timestamp-based high-level machinery.
if (!(flags & SEEK_ABSOLUTE) && !(flags & SEEK_HR) && priv->duration > 0)
{
int dir = (flags & SEEK_BACKWARD) ? -1 : 1;
// The user is making a relative seek (translated to absolute),
// and we try not to get the user stuck on "boundaries". So try
// to do block based seeks, which should workaround libdvdnav's
// terrible CBR-based seeking.
d -= r; // relative seek amount in seconds
d = d / (priv->duration / 1000.0) * len; // d is now in blocks
d += pos; // absolute target in blocks
if (dir > 0)
d = MPMAX(d, pos + 1.0);
if (dir < 0)
d = MPMIN(d, pos - 1.0);
d += 0.5; // round
uint32_t target = MPCLAMP(d, 0, len);
MP_VERBOSE(stream, "seek from block %lu to %lu, dir=%d\n",
(unsigned long)pos, (unsigned long)target, dir);
if (dvdnav_sector_search(dvdnav, target, SEEK_SET) != DVDNAV_STATUS_OK)
break;
} else {
// "old" method, should be good enough for large seeks. Used for
// hr-seeks (with fudge offset), because I fear that block-based
// seeking might be off too far for large jumps.
MP_VERBOSE(stream, "seek to PTS %f (%"PRId64")\n", d, tm);
if (dvdnav_time_search(dvdnav, tm) != DVDNAV_STATUS_OK)
break;
}
stream_drop_buffers(stream);
d = dvdnav_get_current_time(dvdnav) / 90000.0f;
MP_VERBOSE(stream, "landed at: %f\n", d);
if (dvdnav_get_position(dvdnav, &pos, &len) == DVDNAV_STATUS_OK)
MP_VERBOSE(stream, "block: %lu\n", (unsigned long)pos);
return STREAM_OK;
}
case STREAM_CTRL_GET_NUM_ANGLES: {
uint32_t curr, angles;
if (dvdnav_get_angle_info(dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
break;
*(int *)arg = angles;
return 1;
}
case STREAM_CTRL_GET_ANGLE: {
uint32_t curr, angles;
if (dvdnav_get_angle_info(dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
break;
*(int *)arg = curr;
return 1;
}
case STREAM_CTRL_SET_ANGLE: {
uint32_t curr, angles;
int new_angle = *(int *)arg;
if (dvdnav_get_angle_info(dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
break;
if (new_angle > angles || new_angle < 1)
break;
if (dvdnav_angle_change(dvdnav, new_angle) != DVDNAV_STATUS_OK)
return 1;
}
case STREAM_CTRL_GET_LANG: {
struct stream_lang_req *req = arg;
int lang = 0;
switch (req->type) {
case STREAM_AUDIO:
lang = mp_dvdnav_lang_from_aid(stream, req->id);
break;
case STREAM_SUB:
lang = mp_dvdnav_lang_from_sid(stream, req->id);
break;
}
if (!lang)
break;
snprintf(req->name, sizeof(req->name), "%c%c", lang >> 8, lang);
return STREAM_OK;
}
case STREAM_CTRL_GET_DVD_INFO: {
struct stream_dvd_info_req *req = arg;
memset(req, 0, sizeof(*req));
req->num_subs = mp_dvdnav_number_of_subs(stream);
assert(sizeof(uint32_t) == sizeof(unsigned int));
memcpy(req->palette, priv->spu_clut, sizeof(req->palette));
return STREAM_OK;
}
case STREAM_CTRL_GET_NAV_EVENT: {
struct mp_nav_event **ev = arg;
if (ev)
fill_next_event(stream, ev);
return STREAM_OK;
}
case STREAM_CTRL_NAV_CMD: {
handle_cmd(stream, (struct mp_nav_cmd *)arg);
return STREAM_OK;
}
case STREAM_CTRL_GET_DISC_NAME: {
const char *volume = NULL;
if (dvdnav_get_title_string(dvdnav, &volume) != DVDNAV_STATUS_OK)
break;
if (!volume || !volume[0])
break;
*(char**)arg = talloc_strdup(NULL, volume);
return STREAM_OK;
}
}
return STREAM_UNSUPPORTED;
}
static void stream_dvdnav_close(stream_t *s)
{
struct priv *priv = s->priv;
dvdnav_close(priv->dvdnav);
priv->dvdnav = NULL;
if (priv->dvd_speed)
dvd_set_speed(s, priv->filename, -1);
if (priv->filename)
free(priv->filename);
}
static struct priv *new_dvdnav_stream(stream_t *stream, char *filename)
{
struct priv *priv = stream->priv;
const char *title_str;
if (!filename)
return NULL;
if (!(priv->filename = strdup(filename)))
return NULL;
priv->dvd_speed = stream->opts->dvd_speed;
dvd_set_speed(stream, priv->filename, priv->dvd_speed);
if (dvdnav_open(&(priv->dvdnav), priv->filename) != DVDNAV_STATUS_OK) {
free(priv->filename);
priv->filename = NULL;
return NULL;
}
if (!priv->dvdnav)
return NULL;
dvdnav_set_readahead_flag(priv->dvdnav, 1);
if (dvdnav_set_PGC_positioning_flag(priv->dvdnav, 1) != DVDNAV_STATUS_OK)
MP_ERR(stream, "stream_dvdnav, failed to set PGC positioning\n");
/* report the title?! */
dvdnav_get_title_string(priv->dvdnav, &title_str);
return priv;
}
static int open_s(stream_t *stream)
{
struct priv *priv, *p;
priv = p = stream->priv;
char *filename;
if (p->device && p->device[0])
filename = p->device;
else if (stream->opts->dvd_device && stream->opts->dvd_device[0])
filename = stream->opts->dvd_device;
else
filename = DEFAULT_DVD_DEVICE;
if (!new_dvdnav_stream(stream, filename)) {
MP_ERR(stream, "Couldn't open DVD device: %s\n",
filename);
return STREAM_UNSUPPORTED;
}
if (p->track == TITLE_LONGEST) { // longest
dvdnav_t *dvdnav = priv->dvdnav;
uint64_t best_length = 0;
int best_title = -1;
int32_t num_titles;
if (dvdnav_get_number_of_titles(dvdnav, &num_titles) == DVDNAV_STATUS_OK) {
for (int n = 1; n <= num_titles; n++) {
uint64_t *parts = NULL, duration = 0;
dvdnav_describe_title_chapters(dvdnav, n, &parts, &duration);
if (parts) {
if (duration > best_length) {
best_length = duration;
best_title = n;
}
free(parts);
}
}
}
p->track = best_title - 1;
MP_INFO(stream, "Selecting title %d.\n", p->track);
}
if (p->track >= 0) {
priv->title = p->track;
if (dvdnav_title_play(priv->dvdnav, p->track + 1) != DVDNAV_STATUS_OK) {
MP_FATAL(stream, "dvdnav_stream, couldn't select title %d, error '%s'\n",
p->track, dvdnav_err_to_string(priv->dvdnav));
return STREAM_UNSUPPORTED;
}
} else {
if (dvdnav_menu_call(priv->dvdnav, DVD_MENU_Root) != DVDNAV_STATUS_OK)
dvdnav_menu_call(priv->dvdnav, DVD_MENU_Title);
}
if (stream->opts->dvd_angle > 1)
dvdnav_angle_change(priv->dvdnav, stream->opts->dvd_angle);
stream->sector_size = 2048;
stream->fill_buffer = fill_buffer;
stream->control = control;
stream->close = stream_dvdnav_close;
stream->type = STREAMTYPE_DVD;
stream->demuxer = "+disc";
stream->lavf_type = "mpeg";
stream->allow_caching = false;
return STREAM_OK;
}
const stream_info_t stream_info_dvdnav = {
.name = "dvdnav",
.open = open_s,
.protocols = (const char*const[]){ "dvd", "dvdnav", NULL },
.priv_size = sizeof(struct priv),
.priv_defaults = &stream_priv_dflts,
.options = stream_opts_fields,
.url_options = (const char*const[]){
"hostname=title",
"filename=device",
NULL
},
};
static bool check_ifo(const char *path)
{
if (strcasecmp(mp_basename(path), "video_ts.ifo"))
return false;
return dvd_probe(path, ".ifo", "DVDVIDEO-VMG");
}
static int ifo_dvdnav_stream_open(stream_t *stream)
{
struct priv *priv = talloc_ptrtype(stream, priv);
stream->priv = priv;
*priv = 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 VIDEO_TS/, a
// directory containing VIDEO_TS.IFO, or that file itself.
if (!check_ifo(path)) {
// On UNIX, just assume the filename is always uppercase.
char *npath = mp_path_join(priv, bstr0(path), bstr0("VIDEO_TS.IFO"));
if (!check_ifo(npath)) {
npath = mp_path_join(priv, bstr0(path), bstr0("VIDEO_TS/VIDEO_TS.IFO"));
if (!check_ifo(npath))
goto unsupported;
}
path = npath;
}
priv->device = bstrto0(priv, mp_dirname(path));
MP_INFO(stream, ".IFO detected. Redirecting to dvd://\n");
return open_s(stream);
unsupported:
talloc_free(priv);
stream->priv = NULL;
return STREAM_UNSUPPORTED;
}
const stream_info_t stream_info_ifo_dvdnav = {
.name = "ifo/dvdnav",
.open = ifo_dvdnav_stream_open,
.protocols = (const char*const[]){ "file", "", NULL },
};
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