mirror of
https://github.com/mpv-player/mpv
synced 2024-12-29 02:22:19 +00:00
a4eb8f75c0
Works as ad-filter. I had some more plans, for example replacing matching text with different text, but for now it's dropping matches only. There's a big warning in the manpage that I might change semantics. For example, I might turn it into a primitive sed. In a sane world, you'd probably write a simple script that processes downloaded subtitles before giving them to mpv, and avoid all this complexity. But we don't live in a sane world, and the sooner you learn this, the happier you will be. (But I also want to run this on muxed subtitles.) This is pretty straightforward. We use POSIX regexes, which are readily available without additional pain or dependencies. This also means it's (apparently) not available on win32 (MinGW). The regex list is because I hate big monolithic regexes, and this makes it slightly better. Very superficially tested.
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
#ifndef MPLAYER_SD_H
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#define MPLAYER_SD_H
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#include "dec_sub.h"
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#include "demux/packet.h"
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#include "misc/bstr.h"
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// up to 210 ms overlaps or gaps are removed
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#define SUB_GAP_THRESHOLD 0.210
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// don't change timings if durations are smaller
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#define SUB_GAP_KEEP 0.4
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struct sd {
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struct mpv_global *global;
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struct mp_log *log;
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struct mp_subtitle_opts *opts;
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const struct sd_functions *driver;
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void *priv;
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struct attachment_list *attachments;
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struct mp_codec_params *codec;
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// Set to false as soon as the decoder discards old subtitle events.
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// (only needed if sd_functions.accept_packets_in_advance == false)
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bool preload_ok;
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};
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struct sd_functions {
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const char *name;
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bool accept_packets_in_advance;
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int (*init)(struct sd *sd);
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void (*decode)(struct sd *sd, struct demux_packet *packet);
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void (*reset)(struct sd *sd);
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void (*select)(struct sd *sd, bool selected);
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void (*uninit)(struct sd *sd);
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bool (*accepts_packet)(struct sd *sd, double pts); // implicit default if NULL: true
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int (*control)(struct sd *sd, enum sd_ctrl cmd, void *arg);
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void (*get_bitmaps)(struct sd *sd, struct mp_osd_res dim, int format,
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double pts, struct sub_bitmaps *res);
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char *(*get_text)(struct sd *sd, double pts);
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struct sd_times (*get_times)(struct sd *sd, double pts);
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};
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// lavc_conv.c
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struct lavc_conv;
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struct lavc_conv *lavc_conv_create(struct mp_log *log, const char *codec_name,
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char *extradata, int extradata_len);
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char *lavc_conv_get_extradata(struct lavc_conv *priv);
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char **lavc_conv_decode(struct lavc_conv *priv, struct demux_packet *packet,
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double *sub_pts, double *sub_duration);
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void lavc_conv_reset(struct lavc_conv *priv);
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void lavc_conv_uninit(struct lavc_conv *priv);
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struct sd_filter {
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struct mpv_global *global;
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struct mp_log *log;
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struct mp_sub_filter_opts *opts;
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const struct sd_filter_functions *driver;
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void *priv;
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// Static codec parameters. Set by sd; cannot be changed by filter.
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char *codec;
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char *event_format;
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};
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struct sd_filter_functions {
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bool (*init)(struct sd_filter *ft);
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// Filter an ASS event (usually in the Matroska format, but event_format
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// can be used to determine details).
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// Returning NULL is interpreted as dropping the event completely.
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// Returning pkt makes it no-op.
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// If the returned packet is not pkt or NULL, it must have been properly
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// allocated.
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// pkt is owned by the caller (and freed by the caller when needed).
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// Note: as by normal demux_packet rules, you must not modify any fields in
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// it, or the data referenced by it. You must create a new demux_packet
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// when modifying data.
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struct demux_packet *(*filter)(struct sd_filter *ft,
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struct demux_packet *pkt);
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void (*uninit)(struct sd_filter *ft);
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};
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extern const struct sd_filter_functions sd_filter_sdh;
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extern const struct sd_filter_functions sd_filter_regex;
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#endif
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