[FFmpeg-devel] [PATCH]Support right-to-left targa
Carl Eugen Hoyos
cehoyos at ag.or.at
Sat Dec 3 02:39:27 CET 2011
Hi!
Attached patch fixes ticket #698.
Please review, Carl Eugen
-------------- next part --------------
diff --git a/libavcodec/targa.c b/libavcodec/targa.c
index 884bae6..f60524d 100644
--- a/libavcodec/targa.c
+++ b/libavcodec/targa.c
@@ -231,6 +231,29 @@ static int decode_frame(AVCodecContext *avctx,
}
}
}
+ if(flags & 0x10){ // right-to-left, needs horizontal flip
+ int x;
+ for(y = 0; y < s->height; y++){
+ void *line = &p->data[0][y * p->linesize[0]];
+ for(x = 0; x < s->width >> 1; x++){
+ switch(s->bpp){
+ case 32:
+ FFSWAP(uint32_t, ((uint32_t *)line)[x], ((uint32_t *)line)[s->width - x]);
+ break;
+ case 24:
+ FFSWAP(uint8_t, ((uint8_t *)line)[3 * x ], ((uint8_t *)line)[3 * s->width - 3 * x ]);
+ FFSWAP(uint8_t, ((uint8_t *)line)[3 * x + 1], ((uint8_t *)line)[3 * s->width - 3 * x + 1]);
+ FFSWAP(uint8_t, ((uint8_t *)line)[3 * x + 2], ((uint8_t *)line)[3 * s->width - 3 * x + 2]);
+ break;
+ case 16:
+ FFSWAP(uint16_t, ((uint16_t *)line)[x], ((uint16_t *)line)[s->width - x]);
+ break;
+ case 8:
+ FFSWAP(uint8_t, ((uint8_t *)line)[x], ((uint8_t *)line)[s->width - x]);
+ }
+ }
+ }
+ }
*picture= *(AVFrame*)&s->picture;
*data_size = sizeof(AVPicture);
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