/*
* Decode a 1x2 mcu
* .---.
* | 1 |
* |---|
* | 2 |
* `---'
*/
static void decode_MCU_1x2_1plane(struct jdec_private *priv)
{
// Y
process_Huffman_data_unit(priv, cY);
IDCT(&priv->component_infos[cY], priv->Y, 8);
process_Huffman_data_unit(priv, cY);
IDCT(&priv->component_infos[cY], priv->Y+64, 8);
// Cb
process_Huffman_data_unit(priv, cCb);
// Cr
process_Huffman_data_unit(priv, cCr);
}
/*
* Decode all the 3 components for 1x1
*/
static void decode_MCU_1x1_3planes(struct jdec_private *priv)
{
// Y
process_Huffman_data_unit(priv, cY);
IDCT(&priv->component_infos[cY], priv->Y, 8);
// Cb
process_Huffman_data_unit(priv, cCb);
IDCT(&priv->component_infos[cCb], priv->Cb, 8);
// Cr
process_Huffman_data_unit(priv, cCr);
IDCT(&priv->component_infos[cCr], priv->Cr, 8);
}
int process_huffman_mcu(struct huffman_context *hc, struct jdec_task *hdata, struct idct_data *idata){
// Y
int i;
for (i=0; i<4; i++){
if(process_Huffman_data_unit(hc, hdata, cY, idata->DCT_Y[i])){
return -1;
}
}
//Cb
if(process_Huffman_data_unit(hc, hdata, cCb, idata->DCT_C[0])){
return -1;
}
//Cr
if(process_Huffman_data_unit(hc, hdata, cCr, idata->DCT_C[1])){
return -1;
}
return 0;
}
