347     int64_t sample_count = 0;  in wav_read_header()  local
398         sample_count = avio_rl64(pb);  in wav_read_header()
400         if (data_size < 0 || sample_count < 0) {  in wav_read_header()
403                    data_size, sample_count);  in wav_read_header()
465             if (!sample_count)  in wav_read_header()
466                 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));  in wav_read_header()
614         && sample_count > 0 && st->codecpar->channels > 1  in wav_read_header()
615         && sample_count % st->codecpar->channels == 0) {  in wav_read_header()
617             sample_count /st->codecpar->bit_rate - 1.0) < 0.3)  in wav_read_header()
618             sample_count /= st->codecpar->channels;  in wav_read_header()
621     if (   data_size > 0 && sample_count && st->codecpar->channels  in wav_read_header()
622 …&& (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample …  in wav_read_header()
623         av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);  in wav_read_header()
624         sample_count = 0;  in wav_read_header()
629 …if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count)…  in wav_read_header()
630         av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);  in wav_read_header()
631         sample_count = 0;  in wav_read_header()
634     if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)  in wav_read_header()
639             sample_count = (data_size << 3)  in wav_read_header()
643     if (sample_count)  in wav_read_header()
644         st->duration = sample_count;  in wav_read_header()