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mpv/sub/sd.h

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subtitles: add framework for subtitle decoders Add a framework for subtitle decoder modules that work more like audio/video decoders do, and change libass rendering of demuxed subtitles to use the new framework. The old subtitle code is messy, with details specific to handling particular subtitle types spread over high-level code. This should make it easier to clean things up and fix some bugs/limitations.
2011-01-16 18:03:08 +00:00
#ifndef MPLAYER_SD_H
#define MPLAYER_SD_H
VO, sub: refactor Remove VFCTRL_DRAW_OSD, VFCAP_EOSD_FILTER, VFCAP_EOSD_RGBA, VFCAP_EOSD, VOCTRL_DRAW_EOSD, VOCTRL_GET_EOSD_RES, VOCTRL_QUERY_EOSD_FORMAT. Remove draw_osd_with_eosd(), which rendered the OSD by calling VOCTRL_DRAW_EOSD. Change VOs to call osd_draw() directly, which takes a callback as argument. (This basically works like the old OSD API, except multiple OSD bitmap formats are supported and caching is possible.) Remove all mentions of "eosd". It's simply "osd" now. Make OSD size per-OSD-object, as they can be different when using vf_sub. Include display_par/video_par in resolution change detection. Fix the issue with margin borders in vo_corevideo.
2012-10-19 17:25:18 +00:00
#include "dec_sub.h"
sub: refactor Make the sub decoder stuff independent from sh_sub (except for initialization of course). Sub decoders now access a struct sd only, instead of getting access to sh_sub. The glue code in dec_sub.c is similarily independent from osd. Some simplifications are made. For example, the switch_id stuff is unneeded: the frontend code just has to make sure to call osd_changed() any time subtitles are switched. This is also preparation for introducing subtitle converters. It's much cleaner to completely separate demuxer header/renderer glue/decoders for this purpose, especially since sub converters might completely change how demuxer headers have to be interpreted. Also pass data as demux_packets. Currently, this doesn't help much, but libavcodec converters might need scary stuff like packet side data, so it's perhaps better to go with passing packets.
2013-06-01 17:44:12 +00:00
#include "demux/demux_packet.h"
struct sd {
struct MPOpts *opts;
const struct sd_functions *driver;
void *priv;
const char *codec;
// Extra header data passed from demuxer
char *extradata;
int extradata_len;
// Video resolution used for subtitle decoding. Doesn't necessarily match
// the resolution of the VO, nor does it have to be the OSD resolution.
int sub_video_w, sub_video_h;
// Make sd_ass use an existing track
struct ass_track *ass_track;
// Shared renderer for ASS - done to avoid reloading embedded fonts.
struct ass_library *ass_library;
struct ass_renderer *ass_renderer;
sub: basic subtitle converters Add a basic infrastructure for subtitle converters. These converters work sort-of like decoders, except that they produce packets instead of subtitle bitmaps. They are put in front of actual decoders. Start with sd_movtext. 4 lines of code are blown up to a 55 lines file, but fortunately this is not going to be that bad for the following converters.
2013-06-01 17:44:55 +00:00
// Set by sub converter
const char *output_codec;
char *output_extradata;
int output_extradata_len;
// Internal buffer for sd_conv_* functions
struct sd_conv_buffer *sd_conv_buffer;
sub: refactor Make the sub decoder stuff independent from sh_sub (except for initialization of course). Sub decoders now access a struct sd only, instead of getting access to sh_sub. The glue code in dec_sub.c is similarily independent from osd. Some simplifications are made. For example, the switch_id stuff is unneeded: the frontend code just has to make sure to call osd_changed() any time subtitles are switched. This is also preparation for introducing subtitle converters. It's much cleaner to completely separate demuxer header/renderer glue/decoders for this purpose, especially since sub converters might completely change how demuxer headers have to be interpreted. Also pass data as demux_packets. Currently, this doesn't help much, but libavcodec converters might need scary stuff like packet side data, so it's perhaps better to go with passing packets.
2013-06-01 17:44:12 +00:00
};
subtitles: add framework for subtitle decoders Add a framework for subtitle decoder modules that work more like audio/video decoders do, and change libass rendering of demuxed subtitles to use the new framework. The old subtitle code is messy, with details specific to handling particular subtitle types spread over high-level code. This should make it easier to clean things up and fix some bugs/limitations.
2011-01-16 18:03:08 +00:00
struct sd_functions {
sub: redo how -no-ass is handled The -no-ass switch used to disable any use of libass for text subtitles. This is not really the case anymore, because libass is now always involved when rendering text. The only remaining use of -no-ass is disabling styling or showing subtitles on the terminal. On the other hand, the old subtitle rendering path is a big reason why the subtitle code is still a big mess with an awful number of obscure special cases. In order to simplify it, remove the old subtitle rendering code, and always go through sd_ass.c. Basically, we use ASS_Track as central data structure for storing text subtitles instead of struct sub_data. This also makes libass mandatory for all text subs, even if they are printed to the terminal in -no-video mode. (We could add something like sd_text to avoid this, but it's not worth the trouble.) struct sub_data and subreader.c are still around, even its ASS/SSA reader. But struct sub_data is freed right after converting it to ASS_Track. The internal ASS reader actually can handle some obscure cases libass can't, like files encoded in UTF-16.
2013-04-28 19:12:11 +00:00
bool accept_packets_in_advance;
bool (*supports_format)(const char *format);
sub: refactor Make the sub decoder stuff independent from sh_sub (except for initialization of course). Sub decoders now access a struct sd only, instead of getting access to sh_sub. The glue code in dec_sub.c is similarily independent from osd. Some simplifications are made. For example, the switch_id stuff is unneeded: the frontend code just has to make sure to call osd_changed() any time subtitles are switched. This is also preparation for introducing subtitle converters. It's much cleaner to completely separate demuxer header/renderer glue/decoders for this purpose, especially since sub converters might completely change how demuxer headers have to be interpreted. Also pass data as demux_packets. Currently, this doesn't help much, but libavcodec converters might need scary stuff like packet side data, so it's perhaps better to go with passing packets.
2013-06-01 17:44:12 +00:00
int (*init)(struct sd *sd);
void (*decode)(struct sd *sd, struct demux_packet *packet);
sub: basic subtitle converters Add a basic infrastructure for subtitle converters. These converters work sort-of like decoders, except that they produce packets instead of subtitle bitmaps. They are put in front of actual decoders. Start with sd_movtext. 4 lines of code are blown up to a 55 lines file, but fortunately this is not going to be that bad for the following converters.
2013-06-01 17:44:55 +00:00
void (*reset)(struct sd *sd);
void (*uninit)(struct sd *sd);
// decoder
sub: refactor Make the sub decoder stuff independent from sh_sub (except for initialization of course). Sub decoders now access a struct sd only, instead of getting access to sh_sub. The glue code in dec_sub.c is similarily independent from osd. Some simplifications are made. For example, the switch_id stuff is unneeded: the frontend code just has to make sure to call osd_changed() any time subtitles are switched. This is also preparation for introducing subtitle converters. It's much cleaner to completely separate demuxer header/renderer glue/decoders for this purpose, especially since sub converters might completely change how demuxer headers have to be interpreted. Also pass data as demux_packets. Currently, this doesn't help much, but libavcodec converters might need scary stuff like packet side data, so it's perhaps better to go with passing packets.
2013-06-01 17:44:12 +00:00
void (*get_bitmaps)(struct sd *sd, struct mp_osd_res dim, double pts,
subs: always use sub decoder framework for libass rendering Remove subtitle selection code setting osd->ass_track directly and vf_ass/vf_vo code rendering the track directly with libass. Instead, do track selection and rendering with dec_sub.c functions. Before, mpctx->set_of_ass_tracks[] contained bare libass tracks generated from external subtitle files. For use with dec_sub.c, it now contains struct sh_sub instances with decoder already initialized. This commit breaks the sub_step command ('g' and 'y' keys) for libass-rendered subtitles. It could be fixed, but it's so useless - especially as with the existing implementation there's no practical way to get subtitle delay back to normal after using it - that I didn't bother. Conflicts: command.c mp_core.h mplayer.c
2012-08-25 18:22:39 +00:00
struct sub_bitmaps *res);
sub: refactor Make the sub decoder stuff independent from sh_sub (except for initialization of course). Sub decoders now access a struct sd only, instead of getting access to sh_sub. The glue code in dec_sub.c is similarily independent from osd. Some simplifications are made. For example, the switch_id stuff is unneeded: the frontend code just has to make sure to call osd_changed() any time subtitles are switched. This is also preparation for introducing subtitle converters. It's much cleaner to completely separate demuxer header/renderer glue/decoders for this purpose, especially since sub converters might completely change how demuxer headers have to be interpreted. Also pass data as demux_packets. Currently, this doesn't help much, but libavcodec converters might need scary stuff like packet side data, so it's perhaps better to go with passing packets.
2013-06-01 17:44:12 +00:00
char *(*get_text)(struct sd *sd, double pts);
sub: basic subtitle converters Add a basic infrastructure for subtitle converters. These converters work sort-of like decoders, except that they produce packets instead of subtitle bitmaps. They are put in front of actual decoders. Start with sd_movtext. 4 lines of code are blown up to a 55 lines file, but fortunately this is not going to be that bad for the following converters.
2013-06-01 17:44:55 +00:00
// converter
struct demux_packet *(*get_converted)(struct sd *sd);
subtitles: add framework for subtitle decoders Add a framework for subtitle decoder modules that work more like audio/video decoders do, and change libass rendering of demuxed subtitles to use the new framework. The old subtitle code is messy, with details specific to handling particular subtitle types spread over high-level code. This should make it easier to clean things up and fix some bugs/limitations.
2011-01-16 18:03:08 +00:00
};
sub: basic subtitle converters Add a basic infrastructure for subtitle converters. These converters work sort-of like decoders, except that they produce packets instead of subtitle bitmaps. They are put in front of actual decoders. Start with sd_movtext. 4 lines of code are blown up to a 55 lines file, but fortunately this is not going to be that bad for the following converters.
2013-06-01 17:44:55 +00:00
void sd_conv_add_packet(struct sd *sd, void *data, int data_len, double pts,
double duration);
struct demux_packet *sd_conv_def_get_converted(struct sd *sd);
void sd_conv_def_reset(struct sd *sd);
void sd_conv_def_uninit(struct sd *sd);
sub: turn subassconvert_ functions into sub converters This means subassconvert.c is split in sd_srt.c and sd_microdvd.c. Now this code is involved in the sub conversion chain like sd_movtext is. The invocation of the converter in sd_ass.c is removed. This requires some other changes to make the new sub converter code work with loading external subtitles. Until now, subtitles loaded via subreader.c was assumed to be in plaintext, or for some formats, in ASS (except in -no-ass mode). Then these were added to an ASS_Track. Change this so that subtitles are always in their original format (as far as decoders/converters for them are available), and turn every sub event read by subreader.c as packet to the dec_sub.c subtitle chain. This removes differences between external/demuxed and -ass/-no-ass code paths further.
2013-06-01 17:54:18 +00:00
#define SD_MAX_LINE_LEN 1000
subtitles: add framework for subtitle decoders Add a framework for subtitle decoder modules that work more like audio/video decoders do, and change libass rendering of demuxed subtitles to use the new framework. The old subtitle code is messy, with details specific to handling particular subtitle types spread over high-level code. This should make it easier to clean things up and fix some bugs/limitations.
2011-01-16 18:03:08 +00:00
#endif