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VQA v1 support 

Originally committed as revision 7183 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2006-11-29 05:40:37 +00:00
parent f39020269e
commit 7667896a36
1 changed files with 16 additions and 1 deletions
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17
libavcodec/vqavideo.c
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@ -471,7 +471,22 @@ static void vqa_decode_chunk(VqaContext *s)
case 1:
/* still need sample media for this case (only one game, "Legend of
* Kyrandia III : Malcolm's Revenge", is known to use this version) */
lines = 0;
lobyte = s->decode_buffer[lobytes * 2];
hibyte = s->decode_buffer[(lobytes * 2) + 1];
vector_index = ((hibyte << 8) | lobyte) >> 3;
vector_index <<= index_shift;
lines = s->vector_height;
/* uniform color fill - a quick hack */
if (hibyte == 0xFF) {
while (lines--) {
s->frame.data[0][pixel_ptr + 0] = 255 - lobyte;
s->frame.data[0][pixel_ptr + 1] = 255 - lobyte;
s->frame.data[0][pixel_ptr + 2] = 255 - lobyte;
s->frame.data[0][pixel_ptr + 3] = 255 - lobyte;
pixel_ptr += s->frame.linesize[0];
}
lines=0;
}
break;
case 2: