Aegisub/OverLua/csri.cpp

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/*
* CSRI interface for OverLua
*
Copyright 2007 Niels Martin Hansen
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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
Contact:
E-mail: <jiifurusu@gmail.com>
IRC: jfs in #aegisub on irc.rizon.net
*/
#include <string.h>
#include <memory.h>
#define CSRI_OWN_HANDLES
#define CSRIAPI extern "C" __declspec(dllexport)
// Nothing special required here
typedef int csri_rend;
// Forward instance data
struct csri_inst;
#include "../csri/include/csri/csri.h"
#include "../csri/include/csri/logging.h"
#include "overlua.h"
// Instance data
struct csri_inst {
csri_fmt frame_format;
OverLuaScript *script;
};
// Renderer information definition
static const csri_info overlua_csri_info = {
"overlua",
"overlua-001",
"OverLua Lua-based advanced effects renderer",
"Niels Martin Hansen",
"Copyright 2007 Niels Martin Hansen (GPLv2)"
};
// Just something we can pass a pointer to
static const csri_rend overlua_csri_rend = 0;
// Name of the "overlua" extension format
static const char *overlua_format_ext_name = "jfs.overlua";
CSRIAPI csri_inst *csri_open_file(csri_rend *renderer,
const char *filename, struct csri_openflag *flags)
{
if (renderer != &overlua_csri_rend) return 0;
csri_inst *inst = new csri_inst;
inst->script = new OverLuaScript(filename);
return inst;
}
CSRIAPI csri_inst *csri_open_mem(csri_rend *renderer,
const void *data, size_t length, struct csri_openflag *flags)
{
if (renderer != &overlua_csri_rend) return 0;
csri_inst *inst = new csri_inst;
inst->script = new OverLuaScript(data, length);
return inst;
}
CSRIAPI void csri_close(csri_inst *inst)
{
delete inst->script;
delete inst;
return;
}
CSRIAPI int csri_request_fmt(csri_inst *inst, const struct csri_fmt *fmt)
{
// only support RGB formats
if (!csri_is_rgb(fmt->pixfmt))
return 0;
// get a private copy of it
memcpy(&inst->frame_format, fmt, sizeof(csri_fmt));
return 1;
}
CSRIAPI void csri_render(csri_inst *inst, struct csri_frame *frame, double time)
{
// check for correct pixfmt
if (frame->pixfmt != inst->frame_format.pixfmt) return;
OverLuaFrameAggregate *olframe = 0;
switch (frame->pixfmt) {
#define HANDLE_RGB_FORMAT(fmtname, Rpos, Gpos, Bpos, PixelWidth) \
case fmtname: \
olframe = new OverLuaFrameAggregateImpl<Rpos,Gpos,Bpos,PixelWidth>(inst->frame_format.width, inst->frame_format.height, frame->strides[0], frame->planes[0]); \
break;
HANDLE_RGB_FORMAT(CSRI_F_RGBA, 0, 1, 2, 4)
HANDLE_RGB_FORMAT(CSRI_F_ARGB, 1, 2, 3, 4)
HANDLE_RGB_FORMAT(CSRI_F_BGRA, 2, 1, 0, 4)
HANDLE_RGB_FORMAT(CSRI_F_ABGR, 3, 2, 1, 4)
HANDLE_RGB_FORMAT(CSRI_F_RGB_, 0, 1, 2, 4)
HANDLE_RGB_FORMAT(CSRI_F__RGB, 1, 2, 3, 4)
HANDLE_RGB_FORMAT(CSRI_F_BGR_, 2, 1, 0, 4)
HANDLE_RGB_FORMAT(CSRI_F__BGR, 3, 2, 1, 4)
HANDLE_RGB_FORMAT(CSRI_F_RGB, 0, 1, 2, 3)
HANDLE_RGB_FORMAT(CSRI_F_BGR, 2, 1, 0, 3)
default: break; // what, we don't support this!
#undef HANDLE_RGB_FORMAT
}
if (olframe) {
inst->script->RenderFrameRGB(*olframe, time);
}
}
CSRIAPI void *csri_query_ext(csri_rend *rend, csri_ext_id extname)
{
if (rend != &overlua_csri_rend)
return 0;
// Check for the OverLua format extension
if (strcmp(extname, overlua_format_ext_name) == 0)
// Nonsense return
return &overlua_format_ext_name;
// TODO: support logging
if (strcmp(extname, CSRI_EXT_LOGGING) == 0)
return 0;
return 0;
}
CSRIAPI struct csri_info *csri_renderer_info(csri_rend *rend)
{
if (rend == &overlua_csri_rend)
return (csri_info*)&overlua_csri_info;
return 0;
}
CSRIAPI csri_rend *csri_renderer_byname(const char *name,
const char *specific)
{
if (strcmp(name, overlua_csri_info.name) == 0)
if (!specific || strcmp(specific, overlua_csri_info.specific) == 0)
return (csri_rend*)&overlua_csri_rend;
return 0;
}
CSRIAPI csri_rend *csri_renderer_byext(unsigned n_ext, csri_ext_id *ext)
{
// Check if every extension is supported
while (n_ext-- > 0) {
if (!csri_query_ext((csri_rend*)&overlua_csri_rend, *ext))
return 0;
ext++;
}
return (csri_rend*)&overlua_csri_rend;
}
CSRIAPI csri_rend *csri_renderer_default()
{
return (csri_rend*)&overlua_csri_rend;
}
CSRIAPI csri_rend *csri_renderer_next(csri_rend *prev)
{
if (prev == 0)
return (csri_rend*)&overlua_csri_rend;
else
return 0;
}