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05b2cd08dc
Subtitles can be preloaded, which means they're fully read and copied
into ASS_Track. This in turn is mainly for the sake of being able to do
subtitle seeking (when it comes down to it, subtitle seeking is the
cause for most trouble here).
Commit a714f8e92 broke preloaded subtitles which have events with
unknown duration, such as some MicroDVD samples. The event list gets
cleared on every seek, so the property of being preloaded obviously gets
lost.
Fix this by moving most of the preloading logic to dec_sub.c. If the
subtitle list gets cleared, they are not considered preloaded anymore,
and the logic for demuxed subtitles is used.
As another minor thing, preloadeding subtitles did neither disable the
demux stream, nor did it discard packets. Thus you could get queue
overflows in theory (harmless, but annoying). Fix this by explicitly
discarding packets in preloaded mode.
In summary, now the only difference between preloaded and normal
demuxing are:
1. a seek is issued, and all packets are read on start
2. during playback, discard the packets instead of feeding them to the
subtitle decoder
This is still petty annoying. It would be nice if maintaining the
subtitle index (and maybe a subtitle packet cache for instant subtitle
presentation when seeking back) could be maintained in the demuxer
instead. Half of all file formats with interleaved subtitles have
this anyway (mp4, mkv muxed with newer mkvmerge).
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#ifndef MPLAYER_DEC_SUB_H
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#define MPLAYER_DEC_SUB_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "osd.h"
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struct sh_stream;
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struct mpv_global;
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struct demux_packet;
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struct dec_sub;
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struct sd;
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enum sd_ctrl {
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SD_CTRL_SUB_STEP,
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SD_CTRL_SET_VIDEO_PARAMS,
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SD_CTRL_GET_RESOLUTION,
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SD_CTRL_SET_TOP,
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SD_CTRL_SET_VIDEO_DEF_FPS,
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};
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struct attachment_list {
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struct demux_attachment *entries;
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int num_entries;
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};
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struct dec_sub *sub_create(struct mpv_global *global, struct sh_stream *sh,
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struct attachment_list *attachments);
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void sub_destroy(struct dec_sub *sub);
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void sub_lock(struct dec_sub *sub);
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void sub_unlock(struct dec_sub *sub);
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bool sub_can_preload(struct dec_sub *sub);
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void sub_preload(struct dec_sub *sub);
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bool sub_read_packets(struct dec_sub *sub, double video_pts);
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void sub_get_bitmaps(struct dec_sub *sub, struct mp_osd_res dim, double pts,
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struct sub_bitmaps *res);
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char *sub_get_text(struct dec_sub *sub, double pts);
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void sub_reset(struct dec_sub *sub);
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void sub_select(struct dec_sub *sub, bool selected);
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int sub_control(struct dec_sub *sub, enum sd_ctrl cmd, void *arg);
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#endif
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