esp_new_jpeg block decoding questions

[hyzgit]

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Issue or Suggestion Description

for (int block_cnt = 0; block_cnt < process_count; block_cnt++)
{
ret = jpeg_dec_process(jpeg_dec, jpeg_io);
if (ret != JPEG_ERR_OK)
{
goto jpeg_dec_failed;
}
}

In the code above, how do you know the corresponding position and width and height of each block

[TempoTian]

Block is devided by height. Width is the same for each block, block height can be estimated by block_height = height / block_count which is aligned to 16 (subsampling YUV420) or 8 others.