forked from mia/Aegisub
223 lines
9 KiB
C
223 lines
9 KiB
C
// Copyright (c) 2007, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:jiifurusu@gmail.com
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//
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#pragma once
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#include <stdlib.h>
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#ifdef AUTO3LIB
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#include "lua/include/lua.h"
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#include "lua/include/lualib.h"
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#include "lua/include/lauxlib.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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// On Win32, filenames are wide, but whatever encoding the system uses everywhere else
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#ifdef WIN32
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typedef wchar_t* filename_t;
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#else
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typedef char* filename_t;
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#endif
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// All other strings involved are UTF-8, no need to do conversion back and forth here
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// So just hardcode char* as type for everything else
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#ifndef AUTO3LIB
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// Definitions used when building Aegisub (ie. importing the symbols)
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// I believe GCC also knows about __declspec(dllimport) etc. and does something sensible with it
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# ifdef _MSC_VER
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# define AUTO3_API __declspec(dllimport)
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# else
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# define AUTO3_API
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# endif
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#else
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// Otherwise we're exporting the symbols
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# ifdef _MSC_VER
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# define AUTO3_API __declspec(dllexport)
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# else
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# define AUTO3_API
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# endif
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#endif
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// Stuff for configuration dialogs
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enum Auto3ConfigOptionKind {
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COK_INVALID = 0,
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COK_LABEL, // static text
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COK_TEXT, // textbox
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COK_INT, // integer entry, should get spin-button is possible
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COK_FLOAT, // float entry, also try for spin-button on this
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COK_BOOL, // bool entry, use a checkbox
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COK_COLOUR, // colour entry, use a picker if possible, otherwise text box
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COK_STYLE // style name, listbox with names of styles defined in subs
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};
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struct Auto3ConfigOption {
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char *name;
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enum Auto3ConfigOptionKind kind;
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char *label;
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char *hint;
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struct {
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int valid; // non-zero if the value is present
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int intval;
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float floatval;
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} min, max;
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union {
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char *stringval; // text, colour (vb-hex style-line format), style
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int intval; // also bool, nonzero is true
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float floatval;
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} default_val, value;
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};
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// Callback interface
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// The application should provide ALL of these functions
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struct Auto3Callbacks {
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// Logging and status
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// pointer passed to logging/status callbacks
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void *logdata;
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// log error during script execution
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void (*log_error)(void *cbdata, const char *msg);
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// log message during script execution
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void (*log_message)(void *cbdata, const char *msg);
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// set progress during script execution
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void (*set_progress)(void *cbdata, float progress);
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// set status message during script execution
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void (*set_status)(void *cbdata, const char* msg);
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// Reading/writing subtitles and related information
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// pointer passed to read/write data callbacks
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void *rwdata;
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// application sets *res_x and *res_y to appropriate values
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void (*get_meta_info)(void *cbdata, int *res_x, int *res_y);
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// set style pointer to point at first style
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void (*reset_style_pointer)(void *cbdata);
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// Get the next style, the application must fill the data into its own buffers, which it then fill in pointers to
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// (Ie. the application owns all strings allocated for this callback.)
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// Return non-zero if a style was found and values filled, otherwise return zero
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int (*get_next_style)(
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void *cbdata, char **name, char **fontname, int *fontsize, char **color1, char **color2, char **color3, char **color4,
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int *bold, int *italic, int *underline, int *strikeout, float *scale_x, float *scale_y, float *spacing, float *angle,
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int *borderstyle, float *outline, float *shadow, int *align, int *margin_l, int *margin_r, int *margin_v, int *encoding);
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// set subtitle pointer to point at first subtitle line
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void (*reset_subs_pointer)(void *cbdata);
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// Get next subtitle line, the application must fill the data into its own buffers, and then fill in pointers to those
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// Return non-zero if a style was found and values filled, otherwise return zero
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int (*get_next_sub)(
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void *cbdata, int *layer, int *start_time, int *end_time, char **style, char **actor,
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int *margin_l, int *margin_r, int *margin_v, char **effect, char **text, int *comment);
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// start writing back new subtitles, application must clear all subtitle lines and be ready to write
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void (*start_subs_write)(void *cbdata);
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// Write a subtitle line back to subtitle file, char pointers are owned by the lib
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void (*write_sub)(void *cbdata, int layer, int start_time, int end_time, const char *style, const char *actor,
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int margin_l, int margin_r, int margin_v, const char *effect, const char *text, int comment);
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// Getting various environment information during runtime
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// pointer passed to runtime data callbacks
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void *rundata;
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// Resolve a filename passed to the include function
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// The result must be allocated with Auto3Malloc and will be free'd by the lib
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filename_t (*resolve_include)(void *cbdata, const char *incname);
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// Get sizing information for a text string given a style
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void (*text_extents)(void *cbdata, const char *text, const char *fontname, int fontsize, int bold, int italic,
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int spacing, float scale_x, float scale_y, int encoding,
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float *out_width, float *out_height, float *out_descent, float *out_extlead);
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// Convert a time in milliseconds to a video frame number
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int (*frame_from_ms)(void *cbdata, int ms);
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// Convert a video frame number to a time in milliseconds
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int (*ms_from_frame)(void *cbdata, int frame);
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};
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// Describes an interpreter
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struct Auto3Interpreter {
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// Public attributes, treat them as read-only
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char *name;
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char *description;
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// Configuration dialog options
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// End of list marked with name==NULL
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// You may change the "value" field of these (in fact, do so)
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struct Auto3ConfigOption *config;
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// Callbacks
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// This is filled in from the 'cb' argument to the Create function,
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// but may be modified later by the application
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struct Auto3Callbacks cb;
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#ifdef AUTO3LIB
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// Private data
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lua_State *L;
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#endif
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};
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// Create a new interpreter
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// filename is name of script file
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// prettyname is a UTF-8 string used as identifier for the script in error messages
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// cb should point to an Auto3Callbacks struct filled in; a copy of this struct will be made
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// error will be filled with any error message on fail, the application is responsible for freeing this string (use Auto3Free)
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// Returns pointer to interpreter object if successful, otherwise NULL
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AUTO3_API struct Auto3Interpreter *CreateAuto3Script(const filename_t filename, const char *prettyname, struct Auto3Callbacks *cb, char **error);
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// Release an interpreter
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AUTO3_API void DestroyAuto3Script(struct Auto3Interpreter *script);
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// Our "malloc" function, allocate memory for strings with this
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AUTO3_API void *Auto3Malloc(size_t amount);
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// Convenience function, use this for duplicating strings this lib should own
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AUTO3_API char *Auto3Strdup(const char *str);
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// Our "free" function, free strings with this
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AUTO3_API void Auto3Free(void *ptr);
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// Start the script execution
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// script->logcbdata and log->rwcbdata should be set to sensible values before this call.
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// The value fields in the config dialog should also be set to values entered by the user here.
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// This will first call get_meta_info,
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// then reset_style pointer followed by a number of calls to get_next_style,
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// then a call to reset_subs_pointer followed by a number of calls to get_next_sub,
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// then actual processing will take place.
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// After processing, start_subs_write will be called, followed by a number of calls to write_sub.
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// Any number of calls to the logging/status functions can take place during script execution
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// Returns non-zero on error
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AUTO3_API int RunAuto3Script(struct Auto3Interpreter *script);
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#ifdef __cplusplus
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}; // extern "C"
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#endif
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