Function mad_frame_decode

modules/data/mp3/libmad/frame.c:434–479

* NAME: frame->decode() * DESCRIPTION: decode a single frame from a bitstream */

 * DESCRIPTION:	decode a single frame from a bitstream
 */
int mad_frame_decode(struct mad_frame *frame, struct mad_stream *stream)
{
  frame->options = stream->options;

  /* header() */
  /* error_check() */

  if (!(frame->header.flags & MAD_FLAG_INCOMPLETE) &&
      mad_header_decode(&frame->header, stream) == -1)
    goto fail;

  /* audio_data() */

  frame->header.flags &= ~MAD_FLAG_INCOMPLETE;

  // EFP3 - On non-MP3 frames, abort instead of crash..we removed MP-II/MP-I decoders
  if (!decoder_table[frame->header.layer - 1]) {
    goto fail;
  }

  if (decoder_table[frame->header.layer - 1](stream, frame) == -1) {
    if (!MAD_RECOVERABLE(stream->error))
      stream->next_frame = stream->this_frame;

    goto fail;
  }

  /* ancillary_data() */

  if (frame->header.layer != MAD_LAYER_III) {
    struct mad_bitptr next_frame;

    mad_bit_init(&next_frame, stream->next_frame);

    stream->anc_ptr    = stream->ptr;
    stream->anc_bitlen = mad_bit_length(&stream->ptr, &next_frame);

    mad_bit_finish(&next_frame);
  }

  return 0;

 fail:
  stream->anc_bitlen = 0;
  return -1;
}

/*
 * NAME:	frame->mute()