-/**
- * Builds all 4 optimal Huffman tables.
- *
- * Uses the data stored in the JPEG buffer to compute the tables.
- * Stores the Huffman tables in the bits_* and val_* arrays in the MJpegContext.
- *
- * @param m MJpegContext containing the JPEG buffer.
- */
-static void ff_mjpeg_build_optimal_huffman(MJpegContext *m)
-{
- int i, table_id, code;
-
- MJpegEncHuffmanContext dc_luminance_ctx;
- MJpegEncHuffmanContext dc_chrominance_ctx;
- MJpegEncHuffmanContext ac_luminance_ctx;
- MJpegEncHuffmanContext ac_chrominance_ctx;
- MJpegEncHuffmanContext *ctx[4] = {&dc_luminance_ctx,
- &dc_chrominance_ctx,
- &ac_luminance_ctx,
- &ac_chrominance_ctx};
- for (i = 0; i < 4; i++) {
- ff_mjpeg_encode_huffman_init(ctx[i]);
- }
- for (i = 0; i < m->huff_ncode; i++) {
- table_id = m->huff_buffer[i].table_id;
- code = m->huff_buffer[i].code;
-
- ff_mjpeg_encode_huffman_increment(ctx[table_id], code);
- }
-
- ff_mjpeg_encode_huffman_close(&dc_luminance_ctx,
- m->bits_dc_luminance,
- m->val_dc_luminance, 12);
- ff_mjpeg_encode_huffman_close(&dc_chrominance_ctx,
- m->bits_dc_chrominance,
- m->val_dc_chrominance, 12);
- ff_mjpeg_encode_huffman_close(&ac_luminance_ctx,
- m->bits_ac_luminance,
- m->val_ac_luminance, 256);
- ff_mjpeg_encode_huffman_close(&ac_chrominance_ctx,
- m->bits_ac_chrominance,
- m->val_ac_chrominance, 256);
-
- ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
- m->huff_code_dc_luminance,
- m->bits_dc_luminance,
- m->val_dc_luminance);
- ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
- m->huff_code_dc_chrominance,
- m->bits_dc_chrominance,
- m->val_dc_chrominance);
- ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
- m->huff_code_ac_luminance,
- m->bits_ac_luminance,
- m->val_ac_luminance);
- ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
- m->huff_code_ac_chrominance,
- m->bits_ac_chrominance,
- m->val_ac_chrominance);
-}
-
-/**
- * Writes the complete JPEG frame when optimal huffman tables are enabled,
- * otherwise writes the stuffing.
- *
- * Header + values + stuffing.
- *
- * @param s The MpegEncContext.
- * @return int Error code, 0 if successful.
- */
-int ff_mjpeg_encode_stuffing(MpegEncContext *s)