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pngdec: Implement 2bpp
Fixes Ticket433 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -579,6 +579,19 @@ static int decode_frame(AVCodecContext *avctx,
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}
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}
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exit_loop:
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exit_loop:
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if(s->bits_per_pixel == 2){
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int i, j;
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uint8_t *pd = s->current_picture->data[0];
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for(j=0; j < s->height; j++) {
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for(i=s->width/4-1; i>=0; i--) {
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pd[4*i+3]= pd[i] &3;
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pd[4*i+2]= (pd[i]>>2)&3;
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pd[4*i+1]= (pd[i]>>4)&3;
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pd[4*i+0]= pd[i]>>6;
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}
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pd += s->image_linesize;
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}
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}
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if(s->bits_per_pixel == 4){
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if(s->bits_per_pixel == 4){
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int i, j;
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int i, j;
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uint8_t *pd = s->current_picture->data[0];
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uint8_t *pd = s->current_picture->data[0];
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