+// TODO: Better way to pass AC3HeaderInfo fields to mov muxer.
+int avpriv_ac3_parse_header(AC3HeaderInfo **phdr, const uint8_t *buf,
+ size_t size)
+{
+ GetBitContext gb;
+ AC3HeaderInfo *hdr;
+ int err;
+
+ if (!*phdr)
+ *phdr = av_mallocz(sizeof(AC3HeaderInfo));
+ if (!*phdr)
+ return AVERROR(ENOMEM);
+ hdr = *phdr;
+
+ init_get_bits8(&gb, buf, size);
+ err = ff_ac3_parse_header(&gb, hdr);
+ if (err < 0)
+ return AVERROR_INVALIDDATA;
+
+ return get_bits_count(&gb);
+}
+
+int av_ac3_parse_header(const uint8_t *buf, size_t size,
+ uint8_t *bitstream_id, uint16_t *frame_size)
+{
+ GetBitContext gb;
+ AC3HeaderInfo hdr;
+ int err;
+
+ init_get_bits8(&gb, buf, size);
+ err = ff_ac3_parse_header(&gb, &hdr);
+ if (err < 0)
+ return AVERROR_INVALIDDATA;
+
+ *bitstream_id = hdr.bitstream_id;
+ *frame_size = hdr.frame_size;
+
+ return 0;
+}
+