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Diffstat (limited to 'FAQ-cd.txt')
| -rw-r--r-- | FAQ-cd.txt | 53 |
1 files changed, 52 insertions, 1 deletions
@@ -866,7 +866,58 @@ A: First of all, my LUA distribution is the 5.0, slightly modified. The basic iso:close() - Pwieew, all done. Good luck ! ;-) + Pwieew, all done! ;-) + + Well, almost actually. Only a few global functions remains. + + exists(filename) + + Will take a string as argument, and return a boolean to tell if the + corresponding file can be safely opened for reading. + + bsdecode(handle, width, height) + + Will return a buffer to a rgb24 picture (size width * height * 3) + corresponding to the decompressed bs picture passed as argument. Beware, + this function is weak, does no check at all, and will certainly crashes the + software if you gives a wrong type buffer. + + bsencode(handle, width, height[, max_size[, q_scale]]) + + Well return a buffer to an encoded bs frame, corresponding to the + input handle, which has to be in rgb24 format. Eventually, the function + will also return the buffer size as second returned value. q_scale + is the initial q_scale value (default = 1), and max_size is the maximum + frame size in bytes, which defaults to 14112 (standard STR size). The + function will redo the encoding process, increasing q_scale each time, + until the final frame size is <= the max_size. Eventually, the function + will return the final q_scale as the third value returned. + + blit(dest, source, dw, dh, sw, sh, sx, sy, bl) + + This will blit the source image buffer into the destination image buffer. + The destination is always a 24 bits RGB picture, of size (dw, dh). The + source buffer can be a 24 bits RGB, or a 32 bits RGBA picture, of size + (sw, sh), and shall be placed into the destination picture at position + (sx, sy) using the method described by bl. The depth of the source buffer + is determined by bl. This argument can be: + + BLIT_OVER - Source is 24 bits. Destination will be fully + overriten by the source picture. + BLIT_OVER32 - Source is 32 bits. Destination will be fully + overriten by the source picture. Source alpha ignored. + BLIT_ALPHA - Source is 32 bits. A full alpha blending will occur. + Alpha = 0: transparant, Alpha = 128: opaque. + BLIT_LIGHTEN - Source is 24 bits. The source will lighten the + destination. + BLIT_LIGHTEN32 - Source is 32 bits. The source will lighten the + destination. Alpha is used. + BLIT_DARKEN - Source is 24 bits. The source will darken the + destionation. + BLIT_DARKEN32 - Source is 32 bits. The source will darken the + destination. Alpha is used. + + Good luck! ;-) Q: What patch did you applied to the LUA compiler? |