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dvdnav: block when libdvdnav requests draining buffers 

Not sure how this should work. Using libdvdnav with a large FIFO doesn't
make sense either: data and control commands use the same stream, so if
you want to send input to libdvdnav, you just have to read from
libdvdnav all the time to get a reaction, which is not compatible with
maintaining a buffer that could remain full for a long time.

I have no idea either whether this improves or worsens anything, though
it might be more correct.
This commit is contained in:
wm4 2013-12-14 01:11:38 +01:00
parent df4d7fd072
commit 6002520906
1 changed files with 13 additions and 5 deletions
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18
mpvcore/player/dvdnav.c
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@ -38,6 +38,7 @@ struct mp_nav_state {
bool nav_still_frame;
bool nav_eof;
bool nav_menu;
bool nav_draining;
int hi_visible;
int highlight[4]; // x0 y0 x1 y1
int subsize[2];
@ -79,10 +80,11 @@ void mp_nav_reset(struct MPContext *mpctx)
stream_control(mpctx->stream, STREAM_CTRL_NAV_CMD, &inp);
nav->hi_visible = 0;
nav->nav_menu = false;
nav->nav_draining = false;
mp_input_disable_section(mpctx->input, "dvdnav-menu");
// Prevent demuxer init code to seek to the "start"
if (mpctx->stream)
mpctx->stream->start_pos = stream_tell(mpctx->stream);
mpctx->stream->start_pos = stream_tell(mpctx->stream);
stream_control(mpctx->stream, STREAM_CTRL_RESUME_CACHE, NULL);
}
void mp_nav_destroy(struct MPContext *mpctx)
@ -130,9 +132,8 @@ void mp_handle_nav(struct MPContext *mpctx)
break;
switch (ev->event) {
case MP_NAV_EVENT_DRAIN: {
struct mp_nav_cmd inp = {MP_NAV_CMD_DRAIN_OK};
stream_control(mpctx->stream, STREAM_CTRL_NAV_CMD, &inp);
MP_VERBOSE(nav, "drain\n");
nav->nav_draining = true;
MP_VERBOSE(nav, "drain requested\n");
break;
}
case MP_NAV_EVENT_RESET_ALL: {
@ -168,6 +169,13 @@ void mp_handle_nav(struct MPContext *mpctx)
}
talloc_free(ev);
}
if (nav->nav_draining && mpctx->stop_play == AT_END_OF_FILE) {
MP_VERBOSE(nav, "execute drain\n");
struct mp_nav_cmd inp = {MP_NAV_CMD_DRAIN_OK};
stream_control(mpctx->stream, STREAM_CTRL_NAV_CMD, &inp);
nav->nav_draining = false;
stream_control(mpctx->stream, STREAM_CTRL_RESUME_CACHE, NULL);
}
// E.g. keep displaying still frames
if (mpctx->stop_play == AT_END_OF_FILE && !nav->nav_eof)
mpctx->stop_play = KEEP_PLAYING;