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Support decoding right-to-left targa files. 

Fixes ticket #698.
This commit is contained in:
Carl Eugen Hoyos 2011-12-03 12:22:12 +01:00
parent 90bfd511c4
commit 88bbabcc00
1 changed files with 23 additions and 0 deletions
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23
libavcodec/targa.c
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@ -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; *picture= *(AVFrame*)&s->picture;
*data_size = sizeof(AVPicture); *data_size = sizeof(AVPicture);