-static int get_chunk_size(long unsigned chunk_num)
-{
- int ret;
- if (chunk_num >= num_chunks)
- return -1;
- ret = chunk_table[chunk_num + 1] - chunk_table[chunk_num];
- if (!ret)
- return ret;
-#if 0
- PARA_DEBUG_LOG("chunk %d: %lli-%lli (%lli bytes)\n",
- chunk_num,
- chunk_table[chunk_num],
- chunk_table[chunk_num + 1] - 1,
- ret);
-#endif
+ ret = aac_find_esds(umap, numbytes, &skip, &decoder_len);
+ if (ret < 0)
+ goto out;
+ handle = aac_open();
+ ret = -E_AAC_AFH_INIT;
+ if (NeAACDecInit(handle, umap + skip, decoder_len, &rate, &channels))
+ goto out;
+ if (!channels)
+ goto out;
+ PARA_INFO_LOG("rate: %lu, channels: %d\n", rate, channels);
+ ret = -E_MP4ASC;
+ if (NeAACDecAudioSpecificConfig(umap + skip, numbytes - skip, &mp4ASC))
+ goto out;
+ if (!mp4ASC.samplingFrequency)
+ goto out;
+ ret = aac_compute_chunk_table(afi, umap, numbytes);
+ if (ret < 0)
+ goto out;
+ skip = ret;
+ ret = aac_set_chunk_tv(afi, &mp4ASC, &afi->seconds_total);
+ if (ret < 0)
+ goto out;
+ ret = aac_find_entry_point(umap + skip, numbytes - skip, &skip);
+ if (ret < 0)
+ goto out;
+ afi->chunk_table[0] = ret;
+ for (i = 1; i<= afi->chunks_total; i++)
+ afi->chunk_table[i] += ret;
+ afi->channels = channels;
+ afi->frequency = rate;
+ ret = (afi->chunk_table[afi->chunks_total] - afi->chunk_table[0]) * 8; /* bits */
+ ret += (channels * afi->seconds_total * 500); /* avoid rounding error */
+ afi->bitrate = ret / (channels * afi->seconds_total * 1000);
+ sprintf(afi->info_string, "audio_file_info1:%lu x %lums, "
+ "%uHz, %d channel%s, %ukb/s\n"
+ "audio_file_info2:\n"
+ "audio_file_info3:\n",
+ afi->chunks_total, tv2ms(&afi->chunk_tv),
+ afi->frequency, channels, channels == 1? "" : "s", afi->bitrate
+ );
+ tv_scale(20, &afi->chunk_tv, &afi->eof_tv);
+ ret = 1;
+out: