/* 138 bits max per 8x8 block +
* 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8;
/* 138 bits max per 8x8 block +
* 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8;