Here are the data structures with brief descriptions:
  th_comment | The comment information |
| th_huff_code | A Huffman code for a Theora DCT token |
| th_img_plane | A buffer for a single color plane in an uncompressed image |
| th_info | Theora bitstream information |
| th_quant_info | A complete set of quantization parameters |
| th_quant_ranges | A set of qi ranges |
| th_stripe_callback | The striped decode callback data to pass to TH_DECCTL_SET_STRIPE_CB |
| theora_comment | Comment header metadata |
| theora_info | Theora bitstream info |
| theora_state | Codec internal state and context |
 yuv_buffer | A YUV buffer for passing uncompressed frames to and from the codec |
