mirror of https://github.com/mpv-player/mpv
210 lines
6.1 KiB
C
210 lines
6.1 KiB
C
// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
|
|
// vim:ts=8:sw=8:noet:ai:
|
|
/*
|
|
Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef ASS_H
|
|
#define ASS_H
|
|
|
|
#include "ass_types.h"
|
|
|
|
/// Libass renderer object. Contents are private.
|
|
typedef struct ass_renderer_s ass_renderer_t;
|
|
|
|
/// a linked list of images produced by ass renderer
|
|
typedef struct ass_image_s {
|
|
int w, h; // bitmap width/height
|
|
int stride; // bitmap stride
|
|
unsigned char* bitmap; // 1bpp stride*h alpha buffer
|
|
uint32_t color; // RGBA
|
|
int dst_x, dst_y; // bitmap placement inside the video frame
|
|
|
|
struct ass_image_s* next; // linked list
|
|
} ass_image_t;
|
|
|
|
/// Hinting type
|
|
typedef enum {ASS_HINTING_NONE = 0,
|
|
ASS_HINTING_LIGHT,
|
|
ASS_HINTING_NORMAL,
|
|
ASS_HINTING_NATIVE
|
|
} ass_hinting_t;
|
|
|
|
/**
|
|
* \brief initialize the library
|
|
* \return library handle or NULL if failed
|
|
*/
|
|
ass_library_t* ass_library_init(void);
|
|
|
|
/**
|
|
* \brief finalize the library
|
|
* \param priv library handle
|
|
*/
|
|
void ass_library_done(ass_library_t*);
|
|
|
|
/**
|
|
* \brief set private font directory
|
|
* It is used for saving embedded fonts and also in font lookup.
|
|
*/
|
|
void ass_set_fonts_dir(ass_library_t* priv, const char* fonts_dir);
|
|
|
|
void ass_set_extract_fonts(ass_library_t* priv, int extract);
|
|
|
|
void ass_set_style_overrides(ass_library_t* priv, char** list);
|
|
|
|
/**
|
|
* \brief initialize the renderer
|
|
* \param priv library handle
|
|
* \return renderer handle or NULL if failed
|
|
*/
|
|
ass_renderer_t* ass_renderer_init(ass_library_t*);
|
|
|
|
/**
|
|
* \brief finalize the renderer
|
|
* \param priv renderer handle
|
|
*/
|
|
void ass_renderer_done(ass_renderer_t* priv);
|
|
|
|
void ass_set_frame_size(ass_renderer_t* priv, int w, int h);
|
|
void ass_set_margins(ass_renderer_t* priv, int t, int b, int l, int r);
|
|
void ass_set_use_margins(ass_renderer_t* priv, int use);
|
|
void ass_set_aspect_ratio(ass_renderer_t* priv, double ar);
|
|
void ass_set_font_scale(ass_renderer_t* priv, double font_scale);
|
|
void ass_set_hinting(ass_renderer_t* priv, ass_hinting_t ht);
|
|
void ass_set_line_spacing(ass_renderer_t* priv, double line_spacing);
|
|
|
|
/**
|
|
* \brief set font lookup defaults
|
|
*/
|
|
int ass_set_fonts(ass_renderer_t* priv, const char* default_font, const char* default_family);
|
|
|
|
/**
|
|
* \brief render a frame, producing a list of ass_image_t
|
|
* \param priv library
|
|
* \param track subtitle track
|
|
* \param now video timestamp in milliseconds
|
|
*/
|
|
ass_image_t* ass_render_frame(ass_renderer_t *priv, ass_track_t* track, long long now, int* detect_change);
|
|
|
|
|
|
// The following functions operate on track objects and do not need an ass_renderer //
|
|
|
|
/**
|
|
* \brief allocate a new empty track object
|
|
* \return pointer to empty track
|
|
*/
|
|
ass_track_t* ass_new_track(ass_library_t*);
|
|
|
|
/**
|
|
* \brief deallocate track and all its child objects (styles and events)
|
|
* \param track track to deallocate
|
|
*/
|
|
void ass_free_track(ass_track_t* track);
|
|
|
|
/**
|
|
* \brief allocate new style
|
|
* \param track track
|
|
* \return newly allocated style id
|
|
*/
|
|
int ass_alloc_style(ass_track_t* track);
|
|
|
|
/**
|
|
* \brief allocate new event
|
|
* \param track track
|
|
* \return newly allocated event id
|
|
*/
|
|
int ass_alloc_event(ass_track_t* track);
|
|
|
|
/**
|
|
* \brief delete a style
|
|
* \param track track
|
|
* \param sid style id
|
|
* Deallocates style data. Does not modify track->n_styles.
|
|
*/
|
|
void ass_free_style(ass_track_t* track, int sid);
|
|
|
|
/**
|
|
* \brief delete an event
|
|
* \param track track
|
|
* \param eid event id
|
|
* Deallocates event data. Does not modify track->n_events.
|
|
*/
|
|
void ass_free_event(ass_track_t* track, int eid);
|
|
|
|
/**
|
|
* \brief Process Codec Private section of subtitle stream
|
|
* \param track target track
|
|
* \param data string to parse
|
|
* \param size length of data
|
|
*/
|
|
void ass_process_codec_private(ass_track_t* track, char *data, int size);
|
|
|
|
/**
|
|
* \brief Process a chunk of subtitle stream data. In matroska, this containes exactly 1 event (or a commentary)
|
|
* \param track track
|
|
* \param data string to parse
|
|
* \param size length of data
|
|
* \param timecode starting time of the event (milliseconds)
|
|
* \param duration duration of the event (milliseconds)
|
|
*/
|
|
void ass_process_chunk(ass_track_t* track, char *data, int size, long long timecode, long long duration);
|
|
|
|
char* read_file_recode(char* fname, char* codepage, int* size);
|
|
|
|
/**
|
|
* \brief Read subtitles from file.
|
|
* \param fname file name
|
|
* \return newly allocated track
|
|
*/
|
|
ass_track_t* ass_read_file(ass_library_t* library, char* fname, char* codepage);
|
|
|
|
/**
|
|
* \brief Read subtitles from memory.
|
|
* \param library libass library object
|
|
* \param buf pointer to subtitles text
|
|
* \param bufsize size of buffer
|
|
* \param codepage recode buffer contents from given codepage
|
|
* \return newly allocated track
|
|
*/
|
|
ass_track_t* ass_read_memory(ass_library_t* library, char* buf, size_t bufsize, char* codepage);
|
|
/**
|
|
* \brief read styles from file into already initialized track
|
|
* \return 0 on success
|
|
*/
|
|
int ass_read_styles(ass_track_t* track, char* fname, char* codepage);
|
|
|
|
/**
|
|
* \brief Add a memory font.
|
|
* \param name attachment name
|
|
* \param data binary font data
|
|
* \param data_size data size
|
|
*/
|
|
void ass_add_font(ass_library_t* library, char* name, char* data, int data_size);
|
|
|
|
/**
|
|
* \brief Calculates timeshift from now to the start of some other subtitle event, depending on movement parameter
|
|
* \param track subtitle track
|
|
* \param now current time, ms
|
|
* \param movement how many events to skip from the one currently displayed
|
|
* +2 means "the one after the next", -1 means "previous"
|
|
* \return timeshift, ms
|
|
*/
|
|
long long ass_step_sub(ass_track_t* track, long long now, int movement);
|
|
|
|
#endif
|
|
|